Mercurial > hg > truffle
annotate src/share/vm/opto/library_call.cpp @ 7090:05ce1defa4f9
Common out some parts of UnsafeLoad/Store in UnsafeAccess
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 29 Nov 2012 13:24:08 +0100 |
parents | a3ecd773a7b9 |
children | beebba0acc11 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
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28 #include "compiler/compileBroker.hpp" |
1972 | 29 #include "compiler/compileLog.hpp" |
30 #include "oops/objArrayKlass.hpp" | |
31 #include "opto/addnode.hpp" | |
32 #include "opto/callGenerator.hpp" | |
33 #include "opto/cfgnode.hpp" | |
34 #include "opto/idealKit.hpp" | |
35 #include "opto/mulnode.hpp" | |
36 #include "opto/parse.hpp" | |
37 #include "opto/runtime.hpp" | |
38 #include "opto/subnode.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/sharedRuntime.hpp" | |
0 | 41 |
42 class LibraryIntrinsic : public InlineCallGenerator { | |
43 // Extend the set of intrinsics known to the runtime: | |
44 public: | |
45 private: | |
46 bool _is_virtual; | |
6894 | 47 bool _is_predicted; |
0 | 48 vmIntrinsics::ID _intrinsic_id; |
49 | |
50 public: | |
6894 | 51 LibraryIntrinsic(ciMethod* m, bool is_virtual, bool is_predicted, vmIntrinsics::ID id) |
0 | 52 : InlineCallGenerator(m), |
53 _is_virtual(is_virtual), | |
6894 | 54 _is_predicted(is_predicted), |
0 | 55 _intrinsic_id(id) |
56 { | |
57 } | |
58 virtual bool is_intrinsic() const { return true; } | |
59 virtual bool is_virtual() const { return _is_virtual; } | |
6894 | 60 virtual bool is_predicted() const { return _is_predicted; } |
0 | 61 virtual JVMState* generate(JVMState* jvms); |
6894 | 62 virtual Node* generate_predicate(JVMState* jvms); |
0 | 63 vmIntrinsics::ID intrinsic_id() const { return _intrinsic_id; } |
64 }; | |
65 | |
66 | |
67 // Local helper class for LibraryIntrinsic: | |
68 class LibraryCallKit : public GraphKit { | |
69 private: | |
70 LibraryIntrinsic* _intrinsic; // the library intrinsic being called | |
71 | |
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72 const TypeOopPtr* sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr = false); |
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73 |
0 | 74 public: |
75 LibraryCallKit(JVMState* caller, LibraryIntrinsic* intrinsic) | |
76 : GraphKit(caller), | |
77 _intrinsic(intrinsic) | |
78 { | |
79 } | |
80 | |
81 ciMethod* caller() const { return jvms()->method(); } | |
82 int bci() const { return jvms()->bci(); } | |
83 LibraryIntrinsic* intrinsic() const { return _intrinsic; } | |
84 vmIntrinsics::ID intrinsic_id() const { return _intrinsic->intrinsic_id(); } | |
85 ciMethod* callee() const { return _intrinsic->method(); } | |
86 ciSignature* signature() const { return callee()->signature(); } | |
87 int arg_size() const { return callee()->arg_size(); } | |
88 | |
89 bool try_to_inline(); | |
6894 | 90 Node* try_to_predicate(); |
0 | 91 |
92 // Helper functions to inline natives | |
93 void push_result(RegionNode* region, PhiNode* value); | |
94 Node* generate_guard(Node* test, RegionNode* region, float true_prob); | |
95 Node* generate_slow_guard(Node* test, RegionNode* region); | |
96 Node* generate_fair_guard(Node* test, RegionNode* region); | |
97 Node* generate_negative_guard(Node* index, RegionNode* region, | |
98 // resulting CastII of index: | |
99 Node* *pos_index = NULL); | |
100 Node* generate_nonpositive_guard(Node* index, bool never_negative, | |
101 // resulting CastII of index: | |
102 Node* *pos_index = NULL); | |
103 Node* generate_limit_guard(Node* offset, Node* subseq_length, | |
104 Node* array_length, | |
105 RegionNode* region); | |
106 Node* generate_current_thread(Node* &tls_output); | |
107 address basictype2arraycopy(BasicType t, Node *src_offset, Node *dest_offset, | |
2324 | 108 bool disjoint_bases, const char* &name, bool dest_uninitialized); |
0 | 109 Node* load_mirror_from_klass(Node* klass); |
110 Node* load_klass_from_mirror_common(Node* mirror, bool never_see_null, | |
111 int nargs, | |
112 RegionNode* region, int null_path, | |
113 int offset); | |
114 Node* load_klass_from_mirror(Node* mirror, bool never_see_null, int nargs, | |
115 RegionNode* region, int null_path) { | |
116 int offset = java_lang_Class::klass_offset_in_bytes(); | |
117 return load_klass_from_mirror_common(mirror, never_see_null, nargs, | |
118 region, null_path, | |
119 offset); | |
120 } | |
121 Node* load_array_klass_from_mirror(Node* mirror, bool never_see_null, | |
122 int nargs, | |
123 RegionNode* region, int null_path) { | |
124 int offset = java_lang_Class::array_klass_offset_in_bytes(); | |
125 return load_klass_from_mirror_common(mirror, never_see_null, nargs, | |
126 region, null_path, | |
127 offset); | |
128 } | |
129 Node* generate_access_flags_guard(Node* kls, | |
130 int modifier_mask, int modifier_bits, | |
131 RegionNode* region); | |
132 Node* generate_interface_guard(Node* kls, RegionNode* region); | |
133 Node* generate_array_guard(Node* kls, RegionNode* region) { | |
134 return generate_array_guard_common(kls, region, false, false); | |
135 } | |
136 Node* generate_non_array_guard(Node* kls, RegionNode* region) { | |
137 return generate_array_guard_common(kls, region, false, true); | |
138 } | |
139 Node* generate_objArray_guard(Node* kls, RegionNode* region) { | |
140 return generate_array_guard_common(kls, region, true, false); | |
141 } | |
142 Node* generate_non_objArray_guard(Node* kls, RegionNode* region) { | |
143 return generate_array_guard_common(kls, region, true, true); | |
144 } | |
145 Node* generate_array_guard_common(Node* kls, RegionNode* region, | |
146 bool obj_array, bool not_array); | |
147 Node* generate_virtual_guard(Node* obj_klass, RegionNode* slow_region); | |
148 CallJavaNode* generate_method_call(vmIntrinsics::ID method_id, | |
149 bool is_virtual = false, bool is_static = false); | |
150 CallJavaNode* generate_method_call_static(vmIntrinsics::ID method_id) { | |
151 return generate_method_call(method_id, false, true); | |
152 } | |
153 CallJavaNode* generate_method_call_virtual(vmIntrinsics::ID method_id) { | |
154 return generate_method_call(method_id, true, false); | |
155 } | |
6894 | 156 Node * load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static); |
0 | 157 |
6057 | 158 Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2); |
159 Node* make_string_method_node(int opcode, Node* str1, Node* str2); | |
0 | 160 bool inline_string_compareTo(); |
161 bool inline_string_indexOf(); | |
162 Node* string_indexOf(Node* string_object, ciTypeArray* target_array, jint offset, jint cache_i, jint md2_i); | |
681 | 163 bool inline_string_equals(); |
0 | 164 Node* pop_math_arg(); |
165 bool runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName); | |
166 bool inline_math_native(vmIntrinsics::ID id); | |
167 bool inline_trig(vmIntrinsics::ID id); | |
168 bool inline_trans(vmIntrinsics::ID id); | |
169 bool inline_abs(vmIntrinsics::ID id); | |
170 bool inline_sqrt(vmIntrinsics::ID id); | |
6205 | 171 void finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName); |
0 | 172 bool inline_pow(vmIntrinsics::ID id); |
173 bool inline_exp(vmIntrinsics::ID id); | |
174 bool inline_min_max(vmIntrinsics::ID id); | |
175 Node* generate_min_max(vmIntrinsics::ID id, Node* x, Node* y); | |
176 // This returns Type::AnyPtr, RawPtr, or OopPtr. | |
177 int classify_unsafe_addr(Node* &base, Node* &offset); | |
178 Node* make_unsafe_address(Node* base, Node* offset); | |
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179 // Helper for inline_unsafe_access. |
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180 // Generates the guards that check whether the result of |
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181 // Unsafe.getObject should be recorded in an SATB log buffer. |
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182 void insert_pre_barrier(Node* base_oop, Node* offset, Node* pre_val, int nargs, bool need_mem_bar); |
0 | 183 bool inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile); |
184 bool inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static); | |
185 bool inline_unsafe_allocate(); | |
186 bool inline_unsafe_copyMemory(); | |
187 bool inline_native_currentThread(); | |
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188 #ifdef TRACE_HAVE_INTRINSICS |
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189 bool inline_native_classID(); |
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190 bool inline_native_threadID(); |
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191 #endif |
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192 bool inline_native_time_funcs(address method, const char* funcName); |
0 | 193 bool inline_native_isInterrupted(); |
194 bool inline_native_Class_query(vmIntrinsics::ID id); | |
195 bool inline_native_subtype_check(); | |
196 | |
197 bool inline_native_newArray(); | |
198 bool inline_native_getLength(); | |
199 bool inline_array_copyOf(bool is_copyOfRange); | |
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200 bool inline_array_equals(); |
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201 void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark); |
0 | 202 bool inline_native_clone(bool is_virtual); |
203 bool inline_native_Reflection_getCallerClass(); | |
204 bool is_method_invoke_or_aux_frame(JVMState* jvms); | |
205 // Helper function for inlining native object hash method | |
206 bool inline_native_hashcode(bool is_virtual, bool is_static); | |
207 bool inline_native_getClass(); | |
208 | |
209 // Helper functions for inlining arraycopy | |
210 bool inline_arraycopy(); | |
211 void generate_arraycopy(const TypePtr* adr_type, | |
212 BasicType basic_elem_type, | |
213 Node* src, Node* src_offset, | |
214 Node* dest, Node* dest_offset, | |
215 Node* copy_length, | |
216 bool disjoint_bases = false, | |
217 bool length_never_negative = false, | |
218 RegionNode* slow_region = NULL); | |
219 AllocateArrayNode* tightly_coupled_allocation(Node* ptr, | |
220 RegionNode* slow_region); | |
221 void generate_clear_array(const TypePtr* adr_type, | |
222 Node* dest, | |
223 BasicType basic_elem_type, | |
224 Node* slice_off, | |
225 Node* slice_len, | |
226 Node* slice_end); | |
227 bool generate_block_arraycopy(const TypePtr* adr_type, | |
228 BasicType basic_elem_type, | |
229 AllocateNode* alloc, | |
230 Node* src, Node* src_offset, | |
231 Node* dest, Node* dest_offset, | |
2324 | 232 Node* dest_size, bool dest_uninitialized); |
0 | 233 void generate_slow_arraycopy(const TypePtr* adr_type, |
234 Node* src, Node* src_offset, | |
235 Node* dest, Node* dest_offset, | |
2324 | 236 Node* copy_length, bool dest_uninitialized); |
0 | 237 Node* generate_checkcast_arraycopy(const TypePtr* adr_type, |
238 Node* dest_elem_klass, | |
239 Node* src, Node* src_offset, | |
240 Node* dest, Node* dest_offset, | |
2324 | 241 Node* copy_length, bool dest_uninitialized); |
0 | 242 Node* generate_generic_arraycopy(const TypePtr* adr_type, |
243 Node* src, Node* src_offset, | |
244 Node* dest, Node* dest_offset, | |
2324 | 245 Node* copy_length, bool dest_uninitialized); |
0 | 246 void generate_unchecked_arraycopy(const TypePtr* adr_type, |
247 BasicType basic_elem_type, | |
248 bool disjoint_bases, | |
249 Node* src, Node* src_offset, | |
250 Node* dest, Node* dest_offset, | |
2324 | 251 Node* copy_length, bool dest_uninitialized); |
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252 typedef enum { LS_xadd, LS_xchg, LS_cmpxchg } LoadStoreKind; |
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253 bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind); |
0 | 254 bool inline_unsafe_ordered_store(BasicType type); |
255 bool inline_fp_conversions(vmIntrinsics::ID id); | |
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256 bool inline_numberOfLeadingZeros(vmIntrinsics::ID id); |
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257 bool inline_numberOfTrailingZeros(vmIntrinsics::ID id); |
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258 bool inline_bitCount(vmIntrinsics::ID id); |
0 | 259 bool inline_reverseBytes(vmIntrinsics::ID id); |
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260 |
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261 bool inline_reference_get(); |
6894 | 262 bool inline_aescrypt_Block(vmIntrinsics::ID id); |
263 bool inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id); | |
264 Node* inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting); | |
265 Node* get_key_start_from_aescrypt_object(Node* aescrypt_object); | |
0 | 266 }; |
267 | |
268 | |
269 //---------------------------make_vm_intrinsic---------------------------- | |
270 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) { | |
271 vmIntrinsics::ID id = m->intrinsic_id(); | |
272 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); | |
273 | |
274 if (DisableIntrinsic[0] != '\0' | |
275 && strstr(DisableIntrinsic, vmIntrinsics::name_at(id)) != NULL) { | |
276 // disabled by a user request on the command line: | |
277 // example: -XX:DisableIntrinsic=_hashCode,_getClass | |
278 return NULL; | |
279 } | |
280 | |
281 if (!m->is_loaded()) { | |
282 // do not attempt to inline unloaded methods | |
283 return NULL; | |
284 } | |
285 | |
286 // Only a few intrinsics implement a virtual dispatch. | |
287 // They are expensive calls which are also frequently overridden. | |
288 if (is_virtual) { | |
289 switch (id) { | |
290 case vmIntrinsics::_hashCode: | |
291 case vmIntrinsics::_clone: | |
292 // OK, Object.hashCode and Object.clone intrinsics come in both flavors | |
293 break; | |
294 default: | |
295 return NULL; | |
296 } | |
297 } | |
298 | |
299 // -XX:-InlineNatives disables nearly all intrinsics: | |
300 if (!InlineNatives) { | |
301 switch (id) { | |
302 case vmIntrinsics::_indexOf: | |
303 case vmIntrinsics::_compareTo: | |
681 | 304 case vmIntrinsics::_equals: |
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305 case vmIntrinsics::_equalsC: |
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306 case vmIntrinsics::_getAndAddInt: |
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307 case vmIntrinsics::_getAndAddLong: |
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308 case vmIntrinsics::_getAndSetInt: |
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309 case vmIntrinsics::_getAndSetLong: |
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310 case vmIntrinsics::_getAndSetObject: |
0 | 311 break; // InlineNatives does not control String.compareTo |
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312 case vmIntrinsics::_Reference_get: |
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313 break; // InlineNatives does not control Reference.get |
0 | 314 default: |
315 return NULL; | |
316 } | |
317 } | |
318 | |
6894 | 319 bool is_predicted = false; |
320 | |
0 | 321 switch (id) { |
322 case vmIntrinsics::_compareTo: | |
323 if (!SpecialStringCompareTo) return NULL; | |
324 break; | |
325 case vmIntrinsics::_indexOf: | |
326 if (!SpecialStringIndexOf) return NULL; | |
327 break; | |
681 | 328 case vmIntrinsics::_equals: |
329 if (!SpecialStringEquals) return NULL; | |
330 break; | |
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331 case vmIntrinsics::_equalsC: |
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332 if (!SpecialArraysEquals) return NULL; |
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333 break; |
0 | 334 case vmIntrinsics::_arraycopy: |
335 if (!InlineArrayCopy) return NULL; | |
336 break; | |
337 case vmIntrinsics::_copyMemory: | |
338 if (StubRoutines::unsafe_arraycopy() == NULL) return NULL; | |
339 if (!InlineArrayCopy) return NULL; | |
340 break; | |
341 case vmIntrinsics::_hashCode: | |
342 if (!InlineObjectHash) return NULL; | |
343 break; | |
344 case vmIntrinsics::_clone: | |
345 case vmIntrinsics::_copyOf: | |
346 case vmIntrinsics::_copyOfRange: | |
347 if (!InlineObjectCopy) return NULL; | |
348 // These also use the arraycopy intrinsic mechanism: | |
349 if (!InlineArrayCopy) return NULL; | |
350 break; | |
351 case vmIntrinsics::_checkIndex: | |
352 // We do not intrinsify this. The optimizer does fine with it. | |
353 return NULL; | |
354 | |
355 case vmIntrinsics::_getCallerClass: | |
356 if (!UseNewReflection) return NULL; | |
357 if (!InlineReflectionGetCallerClass) return NULL; | |
358 if (!JDK_Version::is_gte_jdk14x_version()) return NULL; | |
359 break; | |
360 | |
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361 case vmIntrinsics::_bitCount_i: |
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362 if (!Matcher::match_rule_supported(Op_PopCountI)) return NULL; |
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363 break; |
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364 |
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365 case vmIntrinsics::_bitCount_l: |
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366 if (!Matcher::match_rule_supported(Op_PopCountL)) return NULL; |
5927
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367 break; |
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368 |
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369 case vmIntrinsics::_numberOfLeadingZeros_i: |
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370 if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return NULL; |
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371 break; |
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372 |
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373 case vmIntrinsics::_numberOfLeadingZeros_l: |
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374 if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return NULL; |
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375 break; |
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376 |
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377 case vmIntrinsics::_numberOfTrailingZeros_i: |
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378 if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return NULL; |
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379 break; |
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380 |
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381 case vmIntrinsics::_numberOfTrailingZeros_l: |
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382 if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return NULL; |
643
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6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
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383 break; |
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384 |
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385 case vmIntrinsics::_Reference_get: |
6615
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386 // Use the intrinsic version of Reference.get() so that the value in |
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387 // the referent field can be registered by the G1 pre-barrier code. |
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388 // Also add memory barrier to prevent commoning reads from this field |
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389 // across safepoint since GC can change it value. |
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390 break; |
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391 |
6795
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392 case vmIntrinsics::_compareAndSwapObject: |
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393 #ifdef _LP64 |
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394 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return NULL; |
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395 #endif |
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396 break; |
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397 |
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398 case vmIntrinsics::_compareAndSwapLong: |
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399 if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return NULL; |
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400 break; |
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401 |
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402 case vmIntrinsics::_getAndAddInt: |
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403 if (!Matcher::match_rule_supported(Op_GetAndAddI)) return NULL; |
7eca5de9e0b6
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404 break; |
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405 |
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406 case vmIntrinsics::_getAndAddLong: |
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407 if (!Matcher::match_rule_supported(Op_GetAndAddL)) return NULL; |
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408 break; |
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409 |
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410 case vmIntrinsics::_getAndSetInt: |
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411 if (!Matcher::match_rule_supported(Op_GetAndSetI)) return NULL; |
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412 break; |
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413 |
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414 case vmIntrinsics::_getAndSetLong: |
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415 if (!Matcher::match_rule_supported(Op_GetAndSetL)) return NULL; |
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416 break; |
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417 |
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418 case vmIntrinsics::_getAndSetObject: |
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419 #ifdef _LP64 |
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420 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
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421 if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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422 break; |
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423 #else |
7eca5de9e0b6
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424 if (!Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
425 break; |
7eca5de9e0b6
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|
426 #endif |
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|
427 |
6894 | 428 case vmIntrinsics::_aescrypt_encryptBlock: |
429 case vmIntrinsics::_aescrypt_decryptBlock: | |
430 if (!UseAESIntrinsics) return NULL; | |
431 break; | |
432 | |
433 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
434 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
435 if (!UseAESIntrinsics) return NULL; | |
436 // these two require the predicated logic | |
437 is_predicted = true; | |
438 break; | |
439 | |
0 | 440 default: |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
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851
diff
changeset
|
441 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility"); |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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|
442 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?"); |
0 | 443 break; |
444 } | |
445 | |
446 // -XX:-InlineClassNatives disables natives from the Class class. | |
447 // The flag applies to all reflective calls, notably Array.newArray | |
448 // (visible to Java programmers as Array.newInstance). | |
449 if (m->holder()->name() == ciSymbol::java_lang_Class() || | |
450 m->holder()->name() == ciSymbol::java_lang_reflect_Array()) { | |
451 if (!InlineClassNatives) return NULL; | |
452 } | |
453 | |
454 // -XX:-InlineThreadNatives disables natives from the Thread class. | |
455 if (m->holder()->name() == ciSymbol::java_lang_Thread()) { | |
456 if (!InlineThreadNatives) return NULL; | |
457 } | |
458 | |
459 // -XX:-InlineMathNatives disables natives from the Math,Float and Double classes. | |
460 if (m->holder()->name() == ciSymbol::java_lang_Math() || | |
461 m->holder()->name() == ciSymbol::java_lang_Float() || | |
462 m->holder()->name() == ciSymbol::java_lang_Double()) { | |
463 if (!InlineMathNatives) return NULL; | |
464 } | |
465 | |
466 // -XX:-InlineUnsafeOps disables natives from the Unsafe class. | |
467 if (m->holder()->name() == ciSymbol::sun_misc_Unsafe()) { | |
468 if (!InlineUnsafeOps) return NULL; | |
469 } | |
470 | |
6894 | 471 return new LibraryIntrinsic(m, is_virtual, is_predicted, (vmIntrinsics::ID) id); |
0 | 472 } |
473 | |
474 //----------------------register_library_intrinsics----------------------- | |
475 // Initialize this file's data structures, for each Compile instance. | |
476 void Compile::register_library_intrinsics() { | |
477 // Nothing to do here. | |
478 } | |
479 | |
480 JVMState* LibraryIntrinsic::generate(JVMState* jvms) { | |
481 LibraryCallKit kit(jvms, this); | |
482 Compile* C = kit.C; | |
483 int nodes = C->unique(); | |
484 #ifndef PRODUCT | |
485 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
486 char buf[1000]; | |
487 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
488 tty->print_cr("Intrinsic %s", str); | |
489 } | |
490 #endif | |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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parents:
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diff
changeset
|
491 |
0 | 492 if (kit.try_to_inline()) { |
493 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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494 CompileTask::print_inlining(kit.callee(), jvms->depth() - 1, kit.bci(), is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
0 | 495 } |
496 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); | |
497 if (C->log()) { | |
498 C->log()->elem("intrinsic id='%s'%s nodes='%d'", | |
499 vmIntrinsics::name_at(intrinsic_id()), | |
500 (is_virtual() ? " virtual='1'" : ""), | |
501 C->unique() - nodes); | |
502 } | |
503 return kit.transfer_exceptions_into_jvms(); | |
504 } | |
505 | |
5927
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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|
506 // The intrinsic bailed out |
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|
507 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
508 if (jvms->has_method()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
changeset
|
509 // Not a root compile. |
5927
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|
510 const char* msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)"; |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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511 CompileTask::print_inlining(kit.callee(), jvms->depth() - 1, kit.bci(), msg); |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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512 } else { |
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|
513 // Root compile |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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514 tty->print("Did not generate intrinsic %s%s at bci:%d in", |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
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diff
changeset
|
515 vmIntrinsics::name_at(intrinsic_id()), |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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diff
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|
516 (is_virtual() ? " (virtual)" : ""), kit.bci()); |
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517 } |
0 | 518 } |
519 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
520 return NULL; | |
521 } | |
522 | |
6894 | 523 Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) { |
524 LibraryCallKit kit(jvms, this); | |
525 Compile* C = kit.C; | |
526 int nodes = C->unique(); | |
527 #ifndef PRODUCT | |
528 assert(is_predicted(), "sanity"); | |
529 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
530 char buf[1000]; | |
531 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
532 tty->print_cr("Predicate for intrinsic %s", str); | |
533 } | |
534 #endif | |
535 | |
536 Node* slow_ctl = kit.try_to_predicate(); | |
537 if (!kit.failing()) { | |
538 if (C->log()) { | |
539 C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'", | |
540 vmIntrinsics::name_at(intrinsic_id()), | |
541 (is_virtual() ? " virtual='1'" : ""), | |
542 C->unique() - nodes); | |
543 } | |
544 return slow_ctl; // Could be NULL if the check folds. | |
545 } | |
546 | |
547 // The intrinsic bailed out | |
548 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
549 if (jvms->has_method()) { | |
550 // Not a root compile. | |
551 const char* msg = "failed to generate predicate for intrinsic"; | |
552 CompileTask::print_inlining(kit.callee(), jvms->depth() - 1, kit.bci(), msg); | |
553 } else { | |
554 // Root compile | |
555 tty->print("Did not generate predicate for intrinsic %s%s at bci:%d in", | |
556 vmIntrinsics::name_at(intrinsic_id()), | |
557 (is_virtual() ? " (virtual)" : ""), kit.bci()); | |
558 } | |
559 } | |
560 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
561 return NULL; | |
562 } | |
563 | |
0 | 564 bool LibraryCallKit::try_to_inline() { |
565 // Handle symbolic names for otherwise undistinguished boolean switches: | |
566 const bool is_store = true; | |
567 const bool is_native_ptr = true; | |
568 const bool is_static = true; | |
569 | |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
570 if (!jvms()->has_method()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
571 // Root JVMState has a null method. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
changeset
|
572 assert(map()->memory()->Opcode() == Op_Parm, ""); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
573 // Insert the memory aliasing node |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
574 set_all_memory(reset_memory()); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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diff
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|
575 } |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
576 assert(merged_memory(), ""); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
577 |
0 | 578 switch (intrinsic_id()) { |
579 case vmIntrinsics::_hashCode: | |
580 return inline_native_hashcode(intrinsic()->is_virtual(), !is_static); | |
581 case vmIntrinsics::_identityHashCode: | |
582 return inline_native_hashcode(/*!virtual*/ false, is_static); | |
583 case vmIntrinsics::_getClass: | |
584 return inline_native_getClass(); | |
585 | |
586 case vmIntrinsics::_dsin: | |
587 case vmIntrinsics::_dcos: | |
588 case vmIntrinsics::_dtan: | |
589 case vmIntrinsics::_dabs: | |
590 case vmIntrinsics::_datan2: | |
591 case vmIntrinsics::_dsqrt: | |
592 case vmIntrinsics::_dexp: | |
593 case vmIntrinsics::_dlog: | |
594 case vmIntrinsics::_dlog10: | |
595 case vmIntrinsics::_dpow: | |
596 return inline_math_native(intrinsic_id()); | |
597 | |
598 case vmIntrinsics::_min: | |
599 case vmIntrinsics::_max: | |
600 return inline_min_max(intrinsic_id()); | |
601 | |
602 case vmIntrinsics::_arraycopy: | |
603 return inline_arraycopy(); | |
604 | |
605 case vmIntrinsics::_compareTo: | |
606 return inline_string_compareTo(); | |
607 case vmIntrinsics::_indexOf: | |
608 return inline_string_indexOf(); | |
681 | 609 case vmIntrinsics::_equals: |
610 return inline_string_equals(); | |
0 | 611 |
612 case vmIntrinsics::_getObject: | |
613 return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, false); | |
614 case vmIntrinsics::_getBoolean: | |
615 return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, false); | |
616 case vmIntrinsics::_getByte: | |
617 return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, false); | |
618 case vmIntrinsics::_getShort: | |
619 return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, false); | |
620 case vmIntrinsics::_getChar: | |
621 return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, false); | |
622 case vmIntrinsics::_getInt: | |
623 return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, false); | |
624 case vmIntrinsics::_getLong: | |
625 return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, false); | |
626 case vmIntrinsics::_getFloat: | |
627 return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, false); | |
628 case vmIntrinsics::_getDouble: | |
629 return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, false); | |
630 | |
631 case vmIntrinsics::_putObject: | |
632 return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, false); | |
633 case vmIntrinsics::_putBoolean: | |
634 return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, false); | |
635 case vmIntrinsics::_putByte: | |
636 return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, false); | |
637 case vmIntrinsics::_putShort: | |
638 return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, false); | |
639 case vmIntrinsics::_putChar: | |
640 return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, false); | |
641 case vmIntrinsics::_putInt: | |
642 return inline_unsafe_access(!is_native_ptr, is_store, T_INT, false); | |
643 case vmIntrinsics::_putLong: | |
644 return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, false); | |
645 case vmIntrinsics::_putFloat: | |
646 return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, false); | |
647 case vmIntrinsics::_putDouble: | |
648 return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, false); | |
649 | |
650 case vmIntrinsics::_getByte_raw: | |
651 return inline_unsafe_access(is_native_ptr, !is_store, T_BYTE, false); | |
652 case vmIntrinsics::_getShort_raw: | |
653 return inline_unsafe_access(is_native_ptr, !is_store, T_SHORT, false); | |
654 case vmIntrinsics::_getChar_raw: | |
655 return inline_unsafe_access(is_native_ptr, !is_store, T_CHAR, false); | |
656 case vmIntrinsics::_getInt_raw: | |
657 return inline_unsafe_access(is_native_ptr, !is_store, T_INT, false); | |
658 case vmIntrinsics::_getLong_raw: | |
659 return inline_unsafe_access(is_native_ptr, !is_store, T_LONG, false); | |
660 case vmIntrinsics::_getFloat_raw: | |
661 return inline_unsafe_access(is_native_ptr, !is_store, T_FLOAT, false); | |
662 case vmIntrinsics::_getDouble_raw: | |
663 return inline_unsafe_access(is_native_ptr, !is_store, T_DOUBLE, false); | |
664 case vmIntrinsics::_getAddress_raw: | |
665 return inline_unsafe_access(is_native_ptr, !is_store, T_ADDRESS, false); | |
666 | |
667 case vmIntrinsics::_putByte_raw: | |
668 return inline_unsafe_access(is_native_ptr, is_store, T_BYTE, false); | |
669 case vmIntrinsics::_putShort_raw: | |
670 return inline_unsafe_access(is_native_ptr, is_store, T_SHORT, false); | |
671 case vmIntrinsics::_putChar_raw: | |
672 return inline_unsafe_access(is_native_ptr, is_store, T_CHAR, false); | |
673 case vmIntrinsics::_putInt_raw: | |
674 return inline_unsafe_access(is_native_ptr, is_store, T_INT, false); | |
675 case vmIntrinsics::_putLong_raw: | |
676 return inline_unsafe_access(is_native_ptr, is_store, T_LONG, false); | |
677 case vmIntrinsics::_putFloat_raw: | |
678 return inline_unsafe_access(is_native_ptr, is_store, T_FLOAT, false); | |
679 case vmIntrinsics::_putDouble_raw: | |
680 return inline_unsafe_access(is_native_ptr, is_store, T_DOUBLE, false); | |
681 case vmIntrinsics::_putAddress_raw: | |
682 return inline_unsafe_access(is_native_ptr, is_store, T_ADDRESS, false); | |
683 | |
684 case vmIntrinsics::_getObjectVolatile: | |
685 return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, true); | |
686 case vmIntrinsics::_getBooleanVolatile: | |
687 return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, true); | |
688 case vmIntrinsics::_getByteVolatile: | |
689 return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, true); | |
690 case vmIntrinsics::_getShortVolatile: | |
691 return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, true); | |
692 case vmIntrinsics::_getCharVolatile: | |
693 return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, true); | |
694 case vmIntrinsics::_getIntVolatile: | |
695 return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, true); | |
696 case vmIntrinsics::_getLongVolatile: | |
697 return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, true); | |
698 case vmIntrinsics::_getFloatVolatile: | |
699 return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, true); | |
700 case vmIntrinsics::_getDoubleVolatile: | |
701 return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, true); | |
702 | |
703 case vmIntrinsics::_putObjectVolatile: | |
704 return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, true); | |
705 case vmIntrinsics::_putBooleanVolatile: | |
706 return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, true); | |
707 case vmIntrinsics::_putByteVolatile: | |
708 return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, true); | |
709 case vmIntrinsics::_putShortVolatile: | |
710 return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, true); | |
711 case vmIntrinsics::_putCharVolatile: | |
712 return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, true); | |
713 case vmIntrinsics::_putIntVolatile: | |
714 return inline_unsafe_access(!is_native_ptr, is_store, T_INT, true); | |
715 case vmIntrinsics::_putLongVolatile: | |
716 return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, true); | |
717 case vmIntrinsics::_putFloatVolatile: | |
718 return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, true); | |
719 case vmIntrinsics::_putDoubleVolatile: | |
720 return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, true); | |
721 | |
722 case vmIntrinsics::_prefetchRead: | |
723 return inline_unsafe_prefetch(!is_native_ptr, !is_store, !is_static); | |
724 case vmIntrinsics::_prefetchWrite: | |
725 return inline_unsafe_prefetch(!is_native_ptr, is_store, !is_static); | |
726 case vmIntrinsics::_prefetchReadStatic: | |
727 return inline_unsafe_prefetch(!is_native_ptr, !is_store, is_static); | |
728 case vmIntrinsics::_prefetchWriteStatic: | |
729 return inline_unsafe_prefetch(!is_native_ptr, is_store, is_static); | |
730 | |
731 case vmIntrinsics::_compareAndSwapObject: | |
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732 return inline_unsafe_load_store(T_OBJECT, LS_cmpxchg); |
0 | 733 case vmIntrinsics::_compareAndSwapInt: |
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734 return inline_unsafe_load_store(T_INT, LS_cmpxchg); |
0 | 735 case vmIntrinsics::_compareAndSwapLong: |
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736 return inline_unsafe_load_store(T_LONG, LS_cmpxchg); |
0 | 737 |
738 case vmIntrinsics::_putOrderedObject: | |
739 return inline_unsafe_ordered_store(T_OBJECT); | |
740 case vmIntrinsics::_putOrderedInt: | |
741 return inline_unsafe_ordered_store(T_INT); | |
742 case vmIntrinsics::_putOrderedLong: | |
743 return inline_unsafe_ordered_store(T_LONG); | |
744 | |
6795
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745 case vmIntrinsics::_getAndAddInt: |
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746 return inline_unsafe_load_store(T_INT, LS_xadd); |
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747 case vmIntrinsics::_getAndAddLong: |
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748 return inline_unsafe_load_store(T_LONG, LS_xadd); |
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749 case vmIntrinsics::_getAndSetInt: |
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750 return inline_unsafe_load_store(T_INT, LS_xchg); |
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751 case vmIntrinsics::_getAndSetLong: |
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752 return inline_unsafe_load_store(T_LONG, LS_xchg); |
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753 case vmIntrinsics::_getAndSetObject: |
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754 return inline_unsafe_load_store(T_OBJECT, LS_xchg); |
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755 |
0 | 756 case vmIntrinsics::_currentThread: |
757 return inline_native_currentThread(); | |
758 case vmIntrinsics::_isInterrupted: | |
759 return inline_native_isInterrupted(); | |
760 | |
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761 #ifdef TRACE_HAVE_INTRINSICS |
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762 case vmIntrinsics::_classID: |
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763 return inline_native_classID(); |
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764 case vmIntrinsics::_threadID: |
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765 return inline_native_threadID(); |
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766 case vmIntrinsics::_counterTime: |
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767 return inline_native_time_funcs(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), "counterTime"); |
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768 #endif |
0 | 769 case vmIntrinsics::_currentTimeMillis: |
6006
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770 return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis"); |
0 | 771 case vmIntrinsics::_nanoTime: |
6006
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772 return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime"); |
0 | 773 case vmIntrinsics::_allocateInstance: |
774 return inline_unsafe_allocate(); | |
775 case vmIntrinsics::_copyMemory: | |
776 return inline_unsafe_copyMemory(); | |
777 case vmIntrinsics::_newArray: | |
778 return inline_native_newArray(); | |
779 case vmIntrinsics::_getLength: | |
780 return inline_native_getLength(); | |
781 case vmIntrinsics::_copyOf: | |
782 return inline_array_copyOf(false); | |
783 case vmIntrinsics::_copyOfRange: | |
784 return inline_array_copyOf(true); | |
169
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785 case vmIntrinsics::_equalsC: |
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786 return inline_array_equals(); |
0 | 787 case vmIntrinsics::_clone: |
788 return inline_native_clone(intrinsic()->is_virtual()); | |
789 | |
790 case vmIntrinsics::_isAssignableFrom: | |
791 return inline_native_subtype_check(); | |
792 | |
793 case vmIntrinsics::_isInstance: | |
794 case vmIntrinsics::_getModifiers: | |
795 case vmIntrinsics::_isInterface: | |
796 case vmIntrinsics::_isArray: | |
797 case vmIntrinsics::_isPrimitive: | |
798 case vmIntrinsics::_getSuperclass: | |
799 case vmIntrinsics::_getComponentType: | |
800 case vmIntrinsics::_getClassAccessFlags: | |
801 return inline_native_Class_query(intrinsic_id()); | |
802 | |
803 case vmIntrinsics::_floatToRawIntBits: | |
804 case vmIntrinsics::_floatToIntBits: | |
805 case vmIntrinsics::_intBitsToFloat: | |
806 case vmIntrinsics::_doubleToRawLongBits: | |
807 case vmIntrinsics::_doubleToLongBits: | |
808 case vmIntrinsics::_longBitsToDouble: | |
809 return inline_fp_conversions(intrinsic_id()); | |
810 | |
775
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811 case vmIntrinsics::_numberOfLeadingZeros_i: |
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812 case vmIntrinsics::_numberOfLeadingZeros_l: |
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813 return inline_numberOfLeadingZeros(intrinsic_id()); |
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814 |
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815 case vmIntrinsics::_numberOfTrailingZeros_i: |
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816 case vmIntrinsics::_numberOfTrailingZeros_l: |
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817 return inline_numberOfTrailingZeros(intrinsic_id()); |
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818 |
643
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819 case vmIntrinsics::_bitCount_i: |
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820 case vmIntrinsics::_bitCount_l: |
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821 return inline_bitCount(intrinsic_id()); |
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822 |
0 | 823 case vmIntrinsics::_reverseBytes_i: |
824 case vmIntrinsics::_reverseBytes_l: | |
1396
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825 case vmIntrinsics::_reverseBytes_s: |
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826 case vmIntrinsics::_reverseBytes_c: |
0 | 827 return inline_reverseBytes((vmIntrinsics::ID) intrinsic_id()); |
828 | |
829 case vmIntrinsics::_getCallerClass: | |
830 return inline_native_Reflection_getCallerClass(); | |
831 | |
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832 case vmIntrinsics::_Reference_get: |
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833 return inline_reference_get(); |
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834 |
6894 | 835 case vmIntrinsics::_aescrypt_encryptBlock: |
836 case vmIntrinsics::_aescrypt_decryptBlock: | |
837 return inline_aescrypt_Block(intrinsic_id()); | |
838 | |
839 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
840 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
841 return inline_cipherBlockChaining_AESCrypt(intrinsic_id()); | |
842 | |
0 | 843 default: |
844 // If you get here, it may be that someone has added a new intrinsic | |
845 // to the list in vmSymbols.hpp without implementing it here. | |
846 #ifndef PRODUCT | |
847 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
848 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)", | |
849 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
850 } | |
851 #endif | |
852 return false; | |
853 } | |
854 } | |
855 | |
6894 | 856 Node* LibraryCallKit::try_to_predicate() { |
857 if (!jvms()->has_method()) { | |
858 // Root JVMState has a null method. | |
859 assert(map()->memory()->Opcode() == Op_Parm, ""); | |
860 // Insert the memory aliasing node | |
861 set_all_memory(reset_memory()); | |
862 } | |
863 assert(merged_memory(), ""); | |
864 | |
865 switch (intrinsic_id()) { | |
866 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
867 return inline_cipherBlockChaining_AESCrypt_predicate(false); | |
868 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
869 return inline_cipherBlockChaining_AESCrypt_predicate(true); | |
870 | |
871 default: | |
872 // If you get here, it may be that someone has added a new intrinsic | |
873 // to the list in vmSymbols.hpp without implementing it here. | |
874 #ifndef PRODUCT | |
875 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
876 tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)", | |
877 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
878 } | |
879 #endif | |
880 Node* slow_ctl = control(); | |
881 set_control(top()); // No fast path instrinsic | |
882 return slow_ctl; | |
883 } | |
884 } | |
885 | |
0 | 886 //------------------------------push_result------------------------------ |
887 // Helper function for finishing intrinsics. | |
888 void LibraryCallKit::push_result(RegionNode* region, PhiNode* value) { | |
889 record_for_igvn(region); | |
890 set_control(_gvn.transform(region)); | |
891 BasicType value_type = value->type()->basic_type(); | |
892 push_node(value_type, _gvn.transform(value)); | |
893 } | |
894 | |
895 //------------------------------generate_guard--------------------------- | |
896 // Helper function for generating guarded fast-slow graph structures. | |
897 // The given 'test', if true, guards a slow path. If the test fails | |
898 // then a fast path can be taken. (We generally hope it fails.) | |
899 // In all cases, GraphKit::control() is updated to the fast path. | |
900 // The returned value represents the control for the slow path. | |
901 // The return value is never 'top'; it is either a valid control | |
902 // or NULL if it is obvious that the slow path can never be taken. | |
903 // Also, if region and the slow control are not NULL, the slow edge | |
904 // is appended to the region. | |
905 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) { | |
906 if (stopped()) { | |
907 // Already short circuited. | |
908 return NULL; | |
909 } | |
910 | |
911 // Build an if node and its projections. | |
912 // If test is true we take the slow path, which we assume is uncommon. | |
913 if (_gvn.type(test) == TypeInt::ZERO) { | |
914 // The slow branch is never taken. No need to build this guard. | |
915 return NULL; | |
916 } | |
917 | |
918 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN); | |
919 | |
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920 Node* if_slow = _gvn.transform( new (C) IfTrueNode(iff) ); |
0 | 921 if (if_slow == top()) { |
922 // The slow branch is never taken. No need to build this guard. | |
923 return NULL; | |
924 } | |
925 | |
926 if (region != NULL) | |
927 region->add_req(if_slow); | |
928 | |
6804
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929 Node* if_fast = _gvn.transform( new (C) IfFalseNode(iff) ); |
0 | 930 set_control(if_fast); |
931 | |
932 return if_slow; | |
933 } | |
934 | |
935 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) { | |
936 return generate_guard(test, region, PROB_UNLIKELY_MAG(3)); | |
937 } | |
938 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) { | |
939 return generate_guard(test, region, PROB_FAIR); | |
940 } | |
941 | |
942 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region, | |
943 Node* *pos_index) { | |
944 if (stopped()) | |
945 return NULL; // already stopped | |
946 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint] | |
947 return NULL; // index is already adequately typed | |
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948 Node* cmp_lt = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
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949 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 950 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN); |
951 if (is_neg != NULL && pos_index != NULL) { | |
952 // Emulate effect of Parse::adjust_map_after_if. | |
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953 Node* ccast = new (C) CastIINode(index, TypeInt::POS); |
0 | 954 ccast->set_req(0, control()); |
955 (*pos_index) = _gvn.transform(ccast); | |
956 } | |
957 return is_neg; | |
958 } | |
959 | |
960 inline Node* LibraryCallKit::generate_nonpositive_guard(Node* index, bool never_negative, | |
961 Node* *pos_index) { | |
962 if (stopped()) | |
963 return NULL; // already stopped | |
964 if (_gvn.type(index)->higher_equal(TypeInt::POS1)) // [1,maxint] | |
965 return NULL; // index is already adequately typed | |
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966 Node* cmp_le = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
0 | 967 BoolTest::mask le_or_eq = (never_negative ? BoolTest::eq : BoolTest::le); |
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968 Node* bol_le = _gvn.transform( new (C) BoolNode(cmp_le, le_or_eq) ); |
0 | 969 Node* is_notp = generate_guard(bol_le, NULL, PROB_MIN); |
970 if (is_notp != NULL && pos_index != NULL) { | |
971 // Emulate effect of Parse::adjust_map_after_if. | |
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972 Node* ccast = new (C) CastIINode(index, TypeInt::POS1); |
0 | 973 ccast->set_req(0, control()); |
974 (*pos_index) = _gvn.transform(ccast); | |
975 } | |
976 return is_notp; | |
977 } | |
978 | |
979 // Make sure that 'position' is a valid limit index, in [0..length]. | |
980 // There are two equivalent plans for checking this: | |
981 // A. (offset + copyLength) unsigned<= arrayLength | |
982 // B. offset <= (arrayLength - copyLength) | |
983 // We require that all of the values above, except for the sum and | |
984 // difference, are already known to be non-negative. | |
985 // Plan A is robust in the face of overflow, if offset and copyLength | |
986 // are both hugely positive. | |
987 // | |
988 // Plan B is less direct and intuitive, but it does not overflow at | |
989 // all, since the difference of two non-negatives is always | |
990 // representable. Whenever Java methods must perform the equivalent | |
991 // check they generally use Plan B instead of Plan A. | |
992 // For the moment we use Plan A. | |
993 inline Node* LibraryCallKit::generate_limit_guard(Node* offset, | |
994 Node* subseq_length, | |
995 Node* array_length, | |
996 RegionNode* region) { | |
997 if (stopped()) | |
998 return NULL; // already stopped | |
999 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO; | |
4778 | 1000 if (zero_offset && subseq_length->eqv_uncast(array_length)) |
0 | 1001 return NULL; // common case of whole-array copy |
1002 Node* last = subseq_length; | |
1003 if (!zero_offset) // last += offset | |
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1004 last = _gvn.transform( new (C) AddINode(last, offset)); |
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1005 Node* cmp_lt = _gvn.transform( new (C) CmpUNode(array_length, last) ); |
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1006 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 1007 Node* is_over = generate_guard(bol_lt, region, PROB_MIN); |
1008 return is_over; | |
1009 } | |
1010 | |
1011 | |
1012 //--------------------------generate_current_thread-------------------- | |
1013 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) { | |
1014 ciKlass* thread_klass = env()->Thread_klass(); | |
1015 const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull); | |
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1016 Node* thread = _gvn.transform(new (C) ThreadLocalNode()); |
0 | 1017 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset())); |
1018 Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT); | |
1019 tls_output = thread; | |
1020 return threadObj; | |
1021 } | |
1022 | |
1023 | |
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1024 //------------------------------make_string_method_node------------------------ |
6057 | 1025 // Helper method for String intrinsic functions. This version is called |
1026 // with str1 and str2 pointing to String object nodes. | |
1027 // | |
1028 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* str2) { | |
986
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1029 Node* no_ctrl = NULL; |
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1030 |
6057 | 1031 // Get start addr of string |
1032 Node* str1_value = load_String_value(no_ctrl, str1); | |
1033 Node* str1_offset = load_String_offset(no_ctrl, str1); | |
986
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1034 Node* str1_start = array_element_address(str1_value, str1_offset, T_CHAR); |
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1035 |
6057 | 1036 // Get length of string 1 |
1037 Node* str1_len = load_String_length(no_ctrl, str1); | |
1038 | |
1039 Node* str2_value = load_String_value(no_ctrl, str2); | |
1040 Node* str2_offset = load_String_offset(no_ctrl, str2); | |
986
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1041 Node* str2_start = array_element_address(str2_value, str2_offset, T_CHAR); |
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1042 |
6057 | 1043 Node* str2_len = NULL; |
1044 Node* result = NULL; | |
1045 | |
1046 switch (opcode) { | |
1047 case Op_StrIndexOf: | |
1048 // Get length of string 2 | |
1049 str2_len = load_String_length(no_ctrl, str2); | |
1050 | |
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1051 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1052 str1_start, str1_len, str2_start, str2_len); |
1053 break; | |
1054 case Op_StrComp: | |
1055 // Get length of string 2 | |
1056 str2_len = load_String_length(no_ctrl, str2); | |
1057 | |
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1058 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1059 str1_start, str1_len, str2_start, str2_len); |
1060 break; | |
1061 case Op_StrEquals: | |
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1062 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1063 str1_start, str2_start, str1_len); |
1064 break; | |
1065 default: | |
1066 ShouldNotReachHere(); | |
1067 return NULL; | |
1068 } | |
1069 | |
1070 // All these intrinsics have checks. | |
1071 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1072 | |
1073 return _gvn.transform(result); | |
1074 } | |
1075 | |
1076 // Helper method for String intrinsic functions. This version is called | |
1077 // with str1 and str2 pointing to char[] nodes, with cnt1 and cnt2 pointing | |
1078 // to Int nodes containing the lenghts of str1 and str2. | |
1079 // | |
1080 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2) { | |
1081 | |
986
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1082 Node* result = NULL; |
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1083 switch (opcode) { |
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1084 case Op_StrIndexOf: |
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1085 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1086 str1_start, cnt1, str2_start, cnt2); |
986
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1087 break; |
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1088 case Op_StrComp: |
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1089 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1090 str1_start, cnt1, str2_start, cnt2); |
986
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1091 break; |
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1092 case Op_StrEquals: |
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1093 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1094 str1_start, str2_start, cnt1); |
986
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1095 break; |
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1096 default: |
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1097 ShouldNotReachHere(); |
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1098 return NULL; |
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1099 } |
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1100 |
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1101 // All these intrinsics have checks. |
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1102 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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1103 |
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1104 return _gvn.transform(result); |
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1105 } |
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1106 |
0 | 1107 //------------------------------inline_string_compareTo------------------------ |
1108 bool LibraryCallKit::inline_string_compareTo() { | |
1109 | |
681 | 1110 if (!Matcher::has_match_rule(Op_StrComp)) return false; |
1111 | |
0 | 1112 _sp += 2; |
1113 Node *argument = pop(); // pop non-receiver first: it was pushed second | |
1114 Node *receiver = pop(); | |
1115 | |
1116 // Null check on self without removing any arguments. The argument | |
1117 // null check technically happens in the wrong place, which can lead to | |
1118 // invalid stack traces when string compare is inlined into a method | |
1119 // which handles NullPointerExceptions. | |
1120 _sp += 2; | |
1121 receiver = do_null_check(receiver, T_OBJECT); | |
1122 argument = do_null_check(argument, T_OBJECT); | |
1123 _sp -= 2; | |
1124 if (stopped()) { | |
1125 return true; | |
1126 } | |
1127 | |
6057 | 1128 Node* compare = make_string_method_node(Op_StrComp, receiver, argument); |
0 | 1129 push(compare); |
1130 return true; | |
1131 } | |
1132 | |
681 | 1133 //------------------------------inline_string_equals------------------------ |
1134 bool LibraryCallKit::inline_string_equals() { | |
1135 | |
1136 if (!Matcher::has_match_rule(Op_StrEquals)) return false; | |
1137 | |
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1138 int nargs = 2; |
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1139 _sp += nargs; |
681 | 1140 Node* argument = pop(); // pop non-receiver first: it was pushed second |
1141 Node* receiver = pop(); | |
1142 | |
1143 // Null check on self without removing any arguments. The argument | |
1144 // null check technically happens in the wrong place, which can lead to | |
1145 // invalid stack traces when string compare is inlined into a method | |
1146 // which handles NullPointerExceptions. | |
1746
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1147 _sp += nargs; |
681 | 1148 receiver = do_null_check(receiver, T_OBJECT); |
1149 //should not do null check for argument for String.equals(), because spec | |
1150 //allows to specify NULL as argument. | |
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1151 _sp -= nargs; |
681 | 1152 |
1153 if (stopped()) { | |
1154 return true; | |
1155 } | |
1156 | |
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1157 // paths (plus control) merge |
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1158 RegionNode* region = new (C) RegionNode(5); |
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1159 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
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1160 |
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1161 // does source == target string? |
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1162 Node* cmp = _gvn.transform(new (C) CmpPNode(receiver, argument)); |
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1163 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::eq)); |
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1164 |
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1165 Node* if_eq = generate_slow_guard(bol, NULL); |
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1166 if (if_eq != NULL) { |
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1167 // receiver == argument |
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1168 phi->init_req(2, intcon(1)); |
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1169 region->init_req(2, if_eq); |
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1170 } |
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1171 |
681 | 1172 // get String klass for instanceOf |
1173 ciInstanceKlass* klass = env()->String_klass(); | |
1174 | |
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1175 if (!stopped()) { |
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1176 _sp += nargs; // gen_instanceof might do an uncommon trap |
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1177 Node* inst = gen_instanceof(argument, makecon(TypeKlassPtr::make(klass))); |
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1178 _sp -= nargs; |
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1179 Node* cmp = _gvn.transform(new (C) CmpINode(inst, intcon(1))); |
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1180 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::ne)); |
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1181 |
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1182 Node* inst_false = generate_guard(bol, NULL, PROB_MIN); |
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1183 //instanceOf == true, fallthrough |
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1184 |
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1185 if (inst_false != NULL) { |
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1186 phi->init_req(3, intcon(0)); |
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1187 region->init_req(3, inst_false); |
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1188 } |
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1189 } |
681 | 1190 |
986
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1191 if (!stopped()) { |
6057 | 1192 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass); |
1193 | |
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1194 // Properly cast the argument to String |
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1195 argument = _gvn.transform(new (C) CheckCastPPNode(control(), argument, string_type)); |
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1196 // This path is taken only when argument's type is String:NotNull. |
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1197 argument = cast_not_null(argument, false); |
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1198 |
6057 | 1199 Node* no_ctrl = NULL; |
1200 | |
1201 // Get start addr of receiver | |
1202 Node* receiver_val = load_String_value(no_ctrl, receiver); | |
1203 Node* receiver_offset = load_String_offset(no_ctrl, receiver); | |
1204 Node* receiver_start = array_element_address(receiver_val, receiver_offset, T_CHAR); | |
1205 | |
1206 // Get length of receiver | |
1207 Node* receiver_cnt = load_String_length(no_ctrl, receiver); | |
1208 | |
1209 // Get start addr of argument | |
1210 Node* argument_val = load_String_value(no_ctrl, argument); | |
1211 Node* argument_offset = load_String_offset(no_ctrl, argument); | |
1212 Node* argument_start = array_element_address(argument_val, argument_offset, T_CHAR); | |
1213 | |
1214 // Get length of argument | |
1215 Node* argument_cnt = load_String_length(no_ctrl, argument); | |
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1216 |
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1217 // Check for receiver count != argument count |
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1218 Node* cmp = _gvn.transform( new(C) CmpINode(receiver_cnt, argument_cnt) ); |
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1219 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::ne) ); |
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1220 Node* if_ne = generate_slow_guard(bol, NULL); |
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1221 if (if_ne != NULL) { |
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1222 phi->init_req(4, intcon(0)); |
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1223 region->init_req(4, if_ne); |
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1224 } |
6057 | 1225 |
1226 // Check for count == 0 is done by assembler code for StrEquals. | |
1227 | |
1228 if (!stopped()) { | |
1229 Node* equals = make_string_method_node(Op_StrEquals, receiver_start, receiver_cnt, argument_start, argument_cnt); | |
1230 phi->init_req(1, equals); | |
1231 region->init_req(1, control()); | |
1232 } | |
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1233 } |
681 | 1234 |
1235 // post merge | |
1236 set_control(_gvn.transform(region)); | |
1237 record_for_igvn(region); | |
1238 | |
1239 push(_gvn.transform(phi)); | |
1240 | |
1241 return true; | |
1242 } | |
1243 | |
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1244 //------------------------------inline_array_equals---------------------------- |
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1245 bool LibraryCallKit::inline_array_equals() { |
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1246 |
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1247 if (!Matcher::has_match_rule(Op_AryEq)) return false; |
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1248 |
169
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1249 _sp += 2; |
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1250 Node *argument2 = pop(); |
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1251 Node *argument1 = pop(); |
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1252 |
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1253 Node* equals = |
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1254 _gvn.transform(new (C) AryEqNode(control(), memory(TypeAryPtr::CHARS), |
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1255 argument1, argument2) ); |
169
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1256 push(equals); |
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1257 return true; |
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1258 } |
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1259 |
0 | 1260 // Java version of String.indexOf(constant string) |
1261 // class StringDecl { | |
1262 // StringDecl(char[] ca) { | |
1263 // offset = 0; | |
1264 // count = ca.length; | |
1265 // value = ca; | |
1266 // } | |
1267 // int offset; | |
1268 // int count; | |
1269 // char[] value; | |
1270 // } | |
1271 // | |
1272 // static int string_indexOf_J(StringDecl string_object, char[] target_object, | |
1273 // int targetOffset, int cache_i, int md2) { | |
1274 // int cache = cache_i; | |
1275 // int sourceOffset = string_object.offset; | |
1276 // int sourceCount = string_object.count; | |
1277 // int targetCount = target_object.length; | |
1278 // | |
1279 // int targetCountLess1 = targetCount - 1; | |
1280 // int sourceEnd = sourceOffset + sourceCount - targetCountLess1; | |
1281 // | |
1282 // char[] source = string_object.value; | |
1283 // char[] target = target_object; | |
1284 // int lastChar = target[targetCountLess1]; | |
1285 // | |
1286 // outer_loop: | |
1287 // for (int i = sourceOffset; i < sourceEnd; ) { | |
1288 // int src = source[i + targetCountLess1]; | |
1289 // if (src == lastChar) { | |
1290 // // With random strings and a 4-character alphabet, | |
1291 // // reverse matching at this point sets up 0.8% fewer | |
1292 // // frames, but (paradoxically) makes 0.3% more probes. | |
1293 // // Since those probes are nearer the lastChar probe, | |
1294 // // there is may be a net D$ win with reverse matching. | |
1295 // // But, reversing loop inhibits unroll of inner loop | |
1296 // // for unknown reason. So, does running outer loop from | |
1297 // // (sourceOffset - targetCountLess1) to (sourceOffset + sourceCount) | |
1298 // for (int j = 0; j < targetCountLess1; j++) { | |
1299 // if (target[targetOffset + j] != source[i+j]) { | |
1300 // if ((cache & (1 << source[i+j])) == 0) { | |
1301 // if (md2 < j+1) { | |
1302 // i += j+1; | |
1303 // continue outer_loop; | |
1304 // } | |
1305 // } | |
1306 // i += md2; | |
1307 // continue outer_loop; | |
1308 // } | |
1309 // } | |
1310 // return i - sourceOffset; | |
1311 // } | |
1312 // if ((cache & (1 << src)) == 0) { | |
1313 // i += targetCountLess1; | |
1314 // } // using "i += targetCount;" and an "else i++;" causes a jump to jump. | |
1315 // i++; | |
1316 // } | |
1317 // return -1; | |
1318 // } | |
1319 | |
1320 //------------------------------string_indexOf------------------------ | |
1321 Node* LibraryCallKit::string_indexOf(Node* string_object, ciTypeArray* target_array, jint targetOffset_i, | |
1322 jint cache_i, jint md2_i) { | |
1323 | |
1324 Node* no_ctrl = NULL; | |
1325 float likely = PROB_LIKELY(0.9); | |
1326 float unlikely = PROB_UNLIKELY(0.9); | |
1327 | |
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1328 const int nargs = 2; // number of arguments to push back for uncommon trap in predicate |
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1329 |
6057 | 1330 Node* source = load_String_value(no_ctrl, string_object); |
1331 Node* sourceOffset = load_String_offset(no_ctrl, string_object); | |
1332 Node* sourceCount = load_String_length(no_ctrl, string_object); | |
0 | 1333 |
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1334 Node* target = _gvn.transform( makecon(TypeOopPtr::make_from_constant(target_array, true)) ); |
0 | 1335 jint target_length = target_array->length(); |
1336 const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin)); | |
1337 const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot); | |
1338 | |
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1339 IdealKit kit(this, false, true); |
0 | 1340 #define __ kit. |
1341 Node* zero = __ ConI(0); | |
1342 Node* one = __ ConI(1); | |
1343 Node* cache = __ ConI(cache_i); | |
1344 Node* md2 = __ ConI(md2_i); | |
1345 Node* lastChar = __ ConI(target_array->char_at(target_length - 1)); | |
1346 Node* targetCount = __ ConI(target_length); | |
1347 Node* targetCountLess1 = __ ConI(target_length - 1); | |
1348 Node* targetOffset = __ ConI(targetOffset_i); | |
1349 Node* sourceEnd = __ SubI(__ AddI(sourceOffset, sourceCount), targetCountLess1); | |
1350 | |
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1351 IdealVariable rtn(kit), i(kit), j(kit); __ declarations_done(); |
0 | 1352 Node* outer_loop = __ make_label(2 /* goto */); |
1353 Node* return_ = __ make_label(1); | |
1354 | |
1355 __ set(rtn,__ ConI(-1)); | |
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1356 __ loop(this, nargs, i, sourceOffset, BoolTest::lt, sourceEnd); { |
0 | 1357 Node* i2 = __ AddI(__ value(i), targetCountLess1); |
1358 // pin to prohibit loading of "next iteration" value which may SEGV (rare) | |
1359 Node* src = load_array_element(__ ctrl(), source, i2, TypeAryPtr::CHARS); | |
1360 __ if_then(src, BoolTest::eq, lastChar, unlikely); { | |
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1361 __ loop(this, nargs, j, zero, BoolTest::lt, targetCountLess1); { |
0 | 1362 Node* tpj = __ AddI(targetOffset, __ value(j)); |
1363 Node* targ = load_array_element(no_ctrl, target, tpj, target_type); | |
1364 Node* ipj = __ AddI(__ value(i), __ value(j)); | |
1365 Node* src2 = load_array_element(no_ctrl, source, ipj, TypeAryPtr::CHARS); | |
1366 __ if_then(targ, BoolTest::ne, src2); { | |
1367 __ if_then(__ AndI(cache, __ LShiftI(one, src2)), BoolTest::eq, zero); { | |
1368 __ if_then(md2, BoolTest::lt, __ AddI(__ value(j), one)); { | |
1369 __ increment(i, __ AddI(__ value(j), one)); | |
1370 __ goto_(outer_loop); | |
1371 } __ end_if(); __ dead(j); | |
1372 }__ end_if(); __ dead(j); | |
1373 __ increment(i, md2); | |
1374 __ goto_(outer_loop); | |
1375 }__ end_if(); | |
1376 __ increment(j, one); | |
1377 }__ end_loop(); __ dead(j); | |
1378 __ set(rtn, __ SubI(__ value(i), sourceOffset)); __ dead(i); | |
1379 __ goto_(return_); | |
1380 }__ end_if(); | |
1381 __ if_then(__ AndI(cache, __ LShiftI(one, src)), BoolTest::eq, zero, likely); { | |
1382 __ increment(i, targetCountLess1); | |
1383 }__ end_if(); | |
1384 __ increment(i, one); | |
1385 __ bind(outer_loop); | |
1386 }__ end_loop(); __ dead(i); | |
1387 __ bind(return_); | |
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1388 |
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1389 // Final sync IdealKit and GraphKit. |
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1390 final_sync(kit); |
0 | 1391 Node* result = __ value(rtn); |
1392 #undef __ | |
1393 C->set_has_loops(true); | |
1394 return result; | |
1395 } | |
1396 | |
1397 //------------------------------inline_string_indexOf------------------------ | |
1398 bool LibraryCallKit::inline_string_indexOf() { | |
1399 | |
1400 _sp += 2; | |
681 | 1401 Node *argument = pop(); // pop non-receiver first: it was pushed second |
1402 Node *receiver = pop(); | |
1403 | |
1404 Node* result; | |
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1405 // Disable the use of pcmpestri until it can be guaranteed that |
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1406 // the load doesn't cross into the uncommited space. |
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1407 if (Matcher::has_match_rule(Op_StrIndexOf) && |
681 | 1408 UseSSE42Intrinsics) { |
1409 // Generate SSE4.2 version of indexOf | |
1410 // We currently only have match rules that use SSE4.2 | |
1411 | |
1412 // Null check on self without removing any arguments. The argument | |
1413 // null check technically happens in the wrong place, which can lead to | |
1414 // invalid stack traces when string compare is inlined into a method | |
1415 // which handles NullPointerExceptions. | |
1416 _sp += 2; | |
1417 receiver = do_null_check(receiver, T_OBJECT); | |
1418 argument = do_null_check(argument, T_OBJECT); | |
1419 _sp -= 2; | |
1420 | |
1421 if (stopped()) { | |
1422 return true; | |
1423 } | |
1424 | |
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1425 ciInstanceKlass* str_klass = env()->String_klass(); |
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1426 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(str_klass); |
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1427 |
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1428 // Make the merge point |
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1429 RegionNode* result_rgn = new (C) RegionNode(4); |
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1430 Node* result_phi = new (C) PhiNode(result_rgn, TypeInt::INT); |
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1431 Node* no_ctrl = NULL; |
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1432 |
6057 | 1433 // Get start addr of source string |
1434 Node* source = load_String_value(no_ctrl, receiver); | |
1435 Node* source_offset = load_String_offset(no_ctrl, receiver); | |
1436 Node* source_start = array_element_address(source, source_offset, T_CHAR); | |
1437 | |
1438 // Get length of source string | |
1439 Node* source_cnt = load_String_length(no_ctrl, receiver); | |
1440 | |
1441 // Get start addr of substring | |
1442 Node* substr = load_String_value(no_ctrl, argument); | |
1443 Node* substr_offset = load_String_offset(no_ctrl, argument); | |
1444 Node* substr_start = array_element_address(substr, substr_offset, T_CHAR); | |
1445 | |
1446 // Get length of source string | |
1447 Node* substr_cnt = load_String_length(no_ctrl, argument); | |
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1448 |
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1449 // Check for substr count > string count |
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1450 Node* cmp = _gvn.transform( new(C) CmpINode(substr_cnt, source_cnt) ); |
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1451 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::gt) ); |
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1452 Node* if_gt = generate_slow_guard(bol, NULL); |
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1453 if (if_gt != NULL) { |
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1454 result_phi->init_req(2, intcon(-1)); |
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1455 result_rgn->init_req(2, if_gt); |
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1456 } |
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1457 |
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1458 if (!stopped()) { |
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1459 // Check for substr count == 0 |
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1460 cmp = _gvn.transform( new(C) CmpINode(substr_cnt, intcon(0)) ); |
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1461 bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
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1462 Node* if_zero = generate_slow_guard(bol, NULL); |
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1463 if (if_zero != NULL) { |
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1464 result_phi->init_req(3, intcon(0)); |
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1465 result_rgn->init_req(3, if_zero); |
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1466 } |
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1467 } |
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1468 |
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1469 if (!stopped()) { |
6057 | 1470 result = make_string_method_node(Op_StrIndexOf, source_start, source_cnt, substr_start, substr_cnt); |
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1471 result_phi->init_req(1, result); |
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1472 result_rgn->init_req(1, control()); |
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1473 } |
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1474 set_control(_gvn.transform(result_rgn)); |
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1475 record_for_igvn(result_rgn); |
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1476 result = _gvn.transform(result_phi); |
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1477 |
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1478 } else { // Use LibraryCallKit::string_indexOf |
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1479 // don't intrinsify if argument isn't a constant string. |
681 | 1480 if (!argument->is_Con()) { |
1481 return false; | |
1482 } | |
1483 const TypeOopPtr* str_type = _gvn.type(argument)->isa_oopptr(); | |
1484 if (str_type == NULL) { | |
1485 return false; | |
1486 } | |
1487 ciInstanceKlass* klass = env()->String_klass(); | |
1488 ciObject* str_const = str_type->const_oop(); | |
1489 if (str_const == NULL || str_const->klass() != klass) { | |
1490 return false; | |
1491 } | |
1492 ciInstance* str = str_const->as_instance(); | |
1493 assert(str != NULL, "must be instance"); | |
1494 | |
6057 | 1495 ciObject* v = str->field_value_by_offset(java_lang_String::value_offset_in_bytes()).as_object(); |
681 | 1496 ciTypeArray* pat = v->as_type_array(); // pattern (argument) character array |
1497 | |
6057 | 1498 int o; |
1499 int c; | |
1500 if (java_lang_String::has_offset_field()) { | |
1501 o = str->field_value_by_offset(java_lang_String::offset_offset_in_bytes()).as_int(); | |
1502 c = str->field_value_by_offset(java_lang_String::count_offset_in_bytes()).as_int(); | |
1503 } else { | |
1504 o = 0; | |
1505 c = pat->length(); | |
1506 } | |
1507 | |
681 | 1508 // constant strings have no offset and count == length which |
1509 // simplifies the resulting code somewhat so lets optimize for that. | |
1510 if (o != 0 || c != pat->length()) { | |
1511 return false; | |
1512 } | |
1513 | |
1514 // Null check on self without removing any arguments. The argument | |
1515 // null check technically happens in the wrong place, which can lead to | |
1516 // invalid stack traces when string compare is inlined into a method | |
1517 // which handles NullPointerExceptions. | |
1518 _sp += 2; | |
1519 receiver = do_null_check(receiver, T_OBJECT); | |
1520 // No null check on the argument is needed since it's a constant String oop. | |
1521 _sp -= 2; | |
1522 if (stopped()) { | |
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1523 return true; |
681 | 1524 } |
1525 | |
1526 // The null string as a pattern always returns 0 (match at beginning of string) | |
1527 if (c == 0) { | |
1528 push(intcon(0)); | |
1529 return true; | |
1530 } | |
1531 | |
1532 // Generate default indexOf | |
1533 jchar lastChar = pat->char_at(o + (c - 1)); | |
1534 int cache = 0; | |
1535 int i; | |
1536 for (i = 0; i < c - 1; i++) { | |
1537 assert(i < pat->length(), "out of range"); | |
1538 cache |= (1 << (pat->char_at(o + i) & (sizeof(cache) * BitsPerByte - 1))); | |
1539 } | |
1540 | |
1541 int md2 = c; | |
1542 for (i = 0; i < c - 1; i++) { | |
1543 assert(i < pat->length(), "out of range"); | |
1544 if (pat->char_at(o + i) == lastChar) { | |
1545 md2 = (c - 1) - i; | |
1546 } | |
1547 } | |
1548 | |
1549 result = string_indexOf(receiver, pat, o, cache, md2); | |
0 | 1550 } |
1551 | |
1552 push(result); | |
1553 return true; | |
1554 } | |
1555 | |
1556 //--------------------------pop_math_arg-------------------------------- | |
1557 // Pop a double argument to a math function from the stack | |
1558 // rounding it if necessary. | |
1559 Node * LibraryCallKit::pop_math_arg() { | |
1560 Node *arg = pop_pair(); | |
1561 if( Matcher::strict_fp_requires_explicit_rounding && UseSSE<=1 ) | |
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1562 arg = _gvn.transform( new (C) RoundDoubleNode(0, arg) ); |
0 | 1563 return arg; |
1564 } | |
1565 | |
1566 //------------------------------inline_trig---------------------------------- | |
1567 // Inline sin/cos/tan instructions, if possible. If rounding is required, do | |
1568 // argument reduction which will turn into a fast/slow diamond. | |
1569 bool LibraryCallKit::inline_trig(vmIntrinsics::ID id) { | |
1570 _sp += arg_size(); // restore stack pointer | |
1571 Node* arg = pop_math_arg(); | |
1572 Node* trig = NULL; | |
1573 | |
1574 switch (id) { | |
1575 case vmIntrinsics::_dsin: | |
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1576 trig = _gvn.transform((Node*)new (C) SinDNode(arg)); |
0 | 1577 break; |
1578 case vmIntrinsics::_dcos: | |
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1579 trig = _gvn.transform((Node*)new (C) CosDNode(arg)); |
0 | 1580 break; |
1581 case vmIntrinsics::_dtan: | |
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1582 trig = _gvn.transform((Node*)new (C) TanDNode(arg)); |
0 | 1583 break; |
1584 default: | |
1585 assert(false, "bad intrinsic was passed in"); | |
1586 return false; | |
1587 } | |
1588 | |
1589 // Rounding required? Check for argument reduction! | |
1590 if( Matcher::strict_fp_requires_explicit_rounding ) { | |
1591 | |
1592 static const double pi_4 = 0.7853981633974483; | |
1593 static const double neg_pi_4 = -0.7853981633974483; | |
1594 // pi/2 in 80-bit extended precision | |
1595 // static const unsigned char pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0x3f,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1596 // -pi/2 in 80-bit extended precision | |
1597 // static const unsigned char neg_pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0xbf,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1598 // Cutoff value for using this argument reduction technique | |
1599 //static const double pi_2_minus_epsilon = 1.564660403643354; | |
1600 //static const double neg_pi_2_plus_epsilon = -1.564660403643354; | |
1601 | |
1602 // Pseudocode for sin: | |
1603 // if (x <= Math.PI / 4.0) { | |
1604 // if (x >= -Math.PI / 4.0) return fsin(x); | |
1605 // if (x >= -Math.PI / 2.0) return -fcos(x + Math.PI / 2.0); | |
1606 // } else { | |
1607 // if (x <= Math.PI / 2.0) return fcos(x - Math.PI / 2.0); | |
1608 // } | |
1609 // return StrictMath.sin(x); | |
1610 | |
1611 // Pseudocode for cos: | |
1612 // if (x <= Math.PI / 4.0) { | |
1613 // if (x >= -Math.PI / 4.0) return fcos(x); | |
1614 // if (x >= -Math.PI / 2.0) return fsin(x + Math.PI / 2.0); | |
1615 // } else { | |
1616 // if (x <= Math.PI / 2.0) return -fsin(x - Math.PI / 2.0); | |
1617 // } | |
1618 // return StrictMath.cos(x); | |
1619 | |
1620 // Actually, sticking in an 80-bit Intel value into C2 will be tough; it | |
1621 // requires a special machine instruction to load it. Instead we'll try | |
1622 // the 'easy' case. If we really need the extra range +/- PI/2 we'll | |
1623 // probably do the math inside the SIN encoding. | |
1624 | |
1625 // Make the merge point | |
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1626 RegionNode *r = new (C) RegionNode(3); |
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1627 Node *phi = new (C) PhiNode(r,Type::DOUBLE); |
0 | 1628 |
1629 // Flatten arg so we need only 1 test | |
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1630 Node *abs = _gvn.transform(new (C) AbsDNode(arg)); |
0 | 1631 // Node for PI/4 constant |
1632 Node *pi4 = makecon(TypeD::make(pi_4)); | |
1633 // Check PI/4 : abs(arg) | |
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1634 Node *cmp = _gvn.transform(new (C) CmpDNode(pi4,abs)); |
0 | 1635 // Check: If PI/4 < abs(arg) then go slow |
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1636 Node *bol = _gvn.transform( new (C) BoolNode( cmp, BoolTest::lt ) ); |
0 | 1637 // Branch either way |
1638 IfNode *iff = create_and_xform_if(control(),bol, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
1639 set_control(opt_iff(r,iff)); | |
1640 | |
1641 // Set fast path result | |
1642 phi->init_req(2,trig); | |
1643 | |
1644 // Slow path - non-blocking leaf call | |
1645 Node* call = NULL; | |
1646 switch (id) { | |
1647 case vmIntrinsics::_dsin: | |
1648 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1649 CAST_FROM_FN_PTR(address, SharedRuntime::dsin), | |
1650 "Sin", NULL, arg, top()); | |
1651 break; | |
1652 case vmIntrinsics::_dcos: | |
1653 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1654 CAST_FROM_FN_PTR(address, SharedRuntime::dcos), | |
1655 "Cos", NULL, arg, top()); | |
1656 break; | |
1657 case vmIntrinsics::_dtan: | |
1658 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1659 CAST_FROM_FN_PTR(address, SharedRuntime::dtan), | |
1660 "Tan", NULL, arg, top()); | |
1661 break; | |
1662 } | |
1663 assert(control()->in(0) == call, ""); | |
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1664 Node* slow_result = _gvn.transform(new (C) ProjNode(call,TypeFunc::Parms)); |
0 | 1665 r->init_req(1,control()); |
1666 phi->init_req(1,slow_result); | |
1667 | |
1668 // Post-merge | |
1669 set_control(_gvn.transform(r)); | |
1670 record_for_igvn(r); | |
1671 trig = _gvn.transform(phi); | |
1672 | |
1673 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1674 } | |
1675 // Push result back on JVM stack | |
1676 push_pair(trig); | |
1677 return true; | |
1678 } | |
1679 | |
1680 //------------------------------inline_sqrt------------------------------------- | |
1681 // Inline square root instruction, if possible. | |
1682 bool LibraryCallKit::inline_sqrt(vmIntrinsics::ID id) { | |
1683 assert(id == vmIntrinsics::_dsqrt, "Not square root"); | |
1684 _sp += arg_size(); // restore stack pointer | |
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1685 push_pair(_gvn.transform(new (C) SqrtDNode(0, pop_math_arg()))); |
0 | 1686 return true; |
1687 } | |
1688 | |
1689 //------------------------------inline_abs------------------------------------- | |
1690 // Inline absolute value instruction, if possible. | |
1691 bool LibraryCallKit::inline_abs(vmIntrinsics::ID id) { | |
1692 assert(id == vmIntrinsics::_dabs, "Not absolute value"); | |
1693 _sp += arg_size(); // restore stack pointer | |
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1694 push_pair(_gvn.transform(new (C) AbsDNode(pop_math_arg()))); |
0 | 1695 return true; |
1696 } | |
1697 | |
6205 | 1698 void LibraryCallKit::finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName) { |
1699 //------------------- | |
1700 //result=(result.isNaN())? funcAddr():result; | |
1701 // Check: If isNaN() by checking result!=result? then either trap | |
1702 // or go to runtime | |
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1703 Node* cmpisnan = _gvn.transform(new (C) CmpDNode(result,result)); |
6205 | 1704 // Build the boolean node |
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1705 Node* bolisnum = _gvn.transform( new (C) BoolNode(cmpisnan, BoolTest::eq) ); |
6205 | 1706 |
1707 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1708 { | |
1709 BuildCutout unless(this, bolisnum, PROB_STATIC_FREQUENT); | |
1710 // End the current control-flow path | |
1711 push_pair(x); | |
1712 if (y != NULL) { | |
1713 push_pair(y); | |
1714 } | |
1715 // The pow or exp intrinsic returned a NaN, which requires a call | |
1716 // to the runtime. Recompile with the runtime call. | |
1717 uncommon_trap(Deoptimization::Reason_intrinsic, | |
1718 Deoptimization::Action_make_not_entrant); | |
1719 } | |
1720 push_pair(result); | |
1721 } else { | |
1722 // If this inlining ever returned NaN in the past, we compile a call | |
1723 // to the runtime to properly handle corner cases | |
1724 | |
1725 IfNode* iff = create_and_xform_if(control(), bolisnum, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
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1726 Node* if_slow = _gvn.transform( new (C) IfFalseNode(iff) ); |
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1727 Node* if_fast = _gvn.transform( new (C) IfTrueNode(iff) ); |
6205 | 1728 |
1729 if (!if_slow->is_top()) { | |
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1730 RegionNode* result_region = new(C) RegionNode(3); |
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1731 PhiNode* result_val = new (C) PhiNode(result_region, Type::DOUBLE); |
6205 | 1732 |
1733 result_region->init_req(1, if_fast); | |
1734 result_val->init_req(1, result); | |
1735 | |
1736 set_control(if_slow); | |
1737 | |
1738 const TypePtr* no_memory_effects = NULL; | |
1739 Node* rt = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1740 no_memory_effects, | |
1741 x, top(), y, y ? top() : NULL); | |
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1742 Node* value = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+0)); |
6205 | 1743 #ifdef ASSERT |
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1744 Node* value_top = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+1)); |
6205 | 1745 assert(value_top == top(), "second value must be top"); |
1746 #endif | |
1747 | |
1748 result_region->init_req(2, control()); | |
1749 result_val->init_req(2, value); | |
1750 push_result(result_region, result_val); | |
1751 } else { | |
1752 push_pair(result); | |
1753 } | |
1754 } | |
1755 } | |
1756 | |
0 | 1757 //------------------------------inline_exp------------------------------------- |
1758 // Inline exp instructions, if possible. The Intel hardware only misses | |
1759 // really odd corner cases (+/- Infinity). Just uncommon-trap them. | |
1760 bool LibraryCallKit::inline_exp(vmIntrinsics::ID id) { | |
1761 assert(id == vmIntrinsics::_dexp, "Not exp"); | |
1762 | |
1763 _sp += arg_size(); // restore stack pointer | |
1764 Node *x = pop_math_arg(); | |
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1765 Node *result = _gvn.transform(new (C) ExpDNode(0,x)); |
0 | 1766 |
6205 | 1767 finish_pow_exp(result, x, NULL, OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
0 | 1768 |
1769 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1770 | |
1771 return true; | |
1772 } | |
1773 | |
1774 //------------------------------inline_pow------------------------------------- | |
1775 // Inline power instructions, if possible. | |
1776 bool LibraryCallKit::inline_pow(vmIntrinsics::ID id) { | |
1777 assert(id == vmIntrinsics::_dpow, "Not pow"); | |
1778 | |
1779 // Pseudocode for pow | |
1780 // if (x <= 0.0) { | |
6205 | 1781 // long longy = (long)y; |
1782 // if ((double)longy == y) { // if y is long | |
1783 // if (y + 1 == y) longy = 0; // huge number: even | |
1784 // result = ((1&longy) == 0)?-DPow(abs(x), y):DPow(abs(x), y); | |
0 | 1785 // } else { |
1786 // result = NaN; | |
1787 // } | |
1788 // } else { | |
1789 // result = DPow(x,y); | |
1790 // } | |
1791 // if (result != result)? { | |
6205 | 1792 // result = uncommon_trap() or runtime_call(); |
0 | 1793 // } |
1794 // return result; | |
1795 | |
1796 _sp += arg_size(); // restore stack pointer | |
1797 Node* y = pop_math_arg(); | |
1798 Node* x = pop_math_arg(); | |
1799 | |
6205 | 1800 Node* result = NULL; |
1801 | |
1802 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1803 // Short form: skip the fancy tests and just check for NaN result. | |
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1804 result = _gvn.transform( new (C) PowDNode(0, x, y) ); |
0 | 1805 } else { |
6205 | 1806 // If this inlining ever returned NaN in the past, include all |
1807 // checks + call to the runtime. | |
0 | 1808 |
1809 // Set the merge point for If node with condition of (x <= 0.0) | |
1810 // There are four possible paths to region node and phi node | |
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1811 RegionNode *r = new (C) RegionNode(4); |
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1812 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1813 |
1814 // Build the first if node: if (x <= 0.0) | |
1815 // Node for 0 constant | |
1816 Node *zeronode = makecon(TypeD::ZERO); | |
1817 // Check x:0 | |
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1818 Node *cmp = _gvn.transform(new (C) CmpDNode(x, zeronode)); |
0 | 1819 // Check: If (x<=0) then go complex path |
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1820 Node *bol1 = _gvn.transform( new (C) BoolNode( cmp, BoolTest::le ) ); |
0 | 1821 // Branch either way |
1822 IfNode *if1 = create_and_xform_if(control(),bol1, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); | |
1823 // Fast path taken; set region slot 3 | |
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1824 Node *fast_taken = _gvn.transform( new (C) IfFalseNode(if1) ); |
0 | 1825 r->init_req(3,fast_taken); // Capture fast-control |
1826 | |
1827 // Fast path not-taken, i.e. slow path | |
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1828 Node *complex_path = _gvn.transform( new (C) IfTrueNode(if1) ); |
0 | 1829 |
1830 // Set fast path result | |
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1831 Node *fast_result = _gvn.transform( new (C) PowDNode(0, x, y) ); |
0 | 1832 phi->init_req(3, fast_result); |
1833 | |
1834 // Complex path | |
6205 | 1835 // Build the second if node (if y is long) |
1836 // Node for (long)y | |
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1837 Node *longy = _gvn.transform( new (C) ConvD2LNode(y)); |
6205 | 1838 // Node for (double)((long) y) |
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1839 Node *doublelongy= _gvn.transform( new (C) ConvL2DNode(longy)); |
6205 | 1840 // Check (double)((long) y) : y |
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1841 Node *cmplongy= _gvn.transform(new (C) CmpDNode(doublelongy, y)); |
6205 | 1842 // Check if (y isn't long) then go to slow path |
1843 | |
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1844 Node *bol2 = _gvn.transform( new (C) BoolNode( cmplongy, BoolTest::ne ) ); |
605 | 1845 // Branch either way |
0 | 1846 IfNode *if2 = create_and_xform_if(complex_path,bol2, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); |
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1847 Node* ylong_path = _gvn.transform( new (C) IfFalseNode(if2)); |
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1848 |
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1849 Node *slow_path = _gvn.transform( new (C) IfTrueNode(if2) ); |
6205 | 1850 |
1851 // Calculate DPow(abs(x), y)*(1 & (long)y) | |
0 | 1852 // Node for constant 1 |
6205 | 1853 Node *conone = longcon(1); |
1854 // 1& (long)y | |
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1855 Node *signnode= _gvn.transform( new (C) AndLNode(conone, longy) ); |
6205 | 1856 |
1857 // A huge number is always even. Detect a huge number by checking | |
1858 // if y + 1 == y and set integer to be tested for parity to 0. | |
1859 // Required for corner case: | |
1860 // (long)9.223372036854776E18 = max_jlong | |
1861 // (double)(long)9.223372036854776E18 = 9.223372036854776E18 | |
1862 // max_jlong is odd but 9.223372036854776E18 is even | |
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1863 Node* yplus1 = _gvn.transform( new (C) AddDNode(y, makecon(TypeD::make(1)))); |
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1864 Node *cmpyplus1= _gvn.transform(new (C) CmpDNode(yplus1, y)); |
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1865 Node *bolyplus1 = _gvn.transform( new (C) BoolNode( cmpyplus1, BoolTest::eq ) ); |
6205 | 1866 Node* correctedsign = NULL; |
1867 if (ConditionalMoveLimit != 0) { | |
1868 correctedsign = _gvn.transform( CMoveNode::make(C, NULL, bolyplus1, signnode, longcon(0), TypeLong::LONG)); | |
1869 } else { | |
1870 IfNode *ifyplus1 = create_and_xform_if(ylong_path,bolyplus1, PROB_FAIR, COUNT_UNKNOWN); | |
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1871 RegionNode *r = new (C) RegionNode(3); |
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1872 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
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1873 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyplus1))); |
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1874 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyplus1))); |
6205 | 1875 phi->init_req(1, signnode); |
1876 phi->init_req(2, longcon(0)); | |
1877 correctedsign = _gvn.transform(phi); | |
1878 ylong_path = _gvn.transform(r); | |
1879 record_for_igvn(r); | |
1880 } | |
1881 | |
0 | 1882 // zero node |
6205 | 1883 Node *conzero = longcon(0); |
1884 // Check (1&(long)y)==0? | |
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1885 Node *cmpeq1 = _gvn.transform(new (C) CmpLNode(correctedsign, conzero)); |
6205 | 1886 // Check if (1&(long)y)!=0?, if so the result is negative |
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1887 Node *bol3 = _gvn.transform( new (C) BoolNode( cmpeq1, BoolTest::ne ) ); |
0 | 1888 // abs(x) |
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1889 Node *absx=_gvn.transform( new (C) AbsDNode(x)); |
0 | 1890 // abs(x)^y |
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1891 Node *absxpowy = _gvn.transform( new (C) PowDNode(0, absx, y) ); |
0 | 1892 // -abs(x)^y |
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1893 Node *negabsxpowy = _gvn.transform(new (C) NegDNode (absxpowy)); |
6205 | 1894 // (1&(long)y)==1?-DPow(abs(x), y):DPow(abs(x), y) |
1895 Node *signresult = NULL; | |
1896 if (ConditionalMoveLimit != 0) { | |
1897 signresult = _gvn.transform( CMoveNode::make(C, NULL, bol3, absxpowy, negabsxpowy, Type::DOUBLE)); | |
1898 } else { | |
1899 IfNode *ifyeven = create_and_xform_if(ylong_path,bol3, PROB_FAIR, COUNT_UNKNOWN); | |
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1900 RegionNode *r = new (C) RegionNode(3); |
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1901 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
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1902 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyeven))); |
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1903 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyeven))); |
6205 | 1904 phi->init_req(1, absxpowy); |
1905 phi->init_req(2, negabsxpowy); | |
1906 signresult = _gvn.transform(phi); | |
1907 ylong_path = _gvn.transform(r); | |
1908 record_for_igvn(r); | |
1909 } | |
0 | 1910 // Set complex path fast result |
6205 | 1911 r->init_req(2, ylong_path); |
0 | 1912 phi->init_req(2, signresult); |
1913 | |
1914 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
1915 Node *slow_result = makecon(TypeD::make(*(double*)&nan_bits)); // return NaN | |
1916 r->init_req(1,slow_path); | |
1917 phi->init_req(1,slow_result); | |
1918 | |
1919 // Post merge | |
1920 set_control(_gvn.transform(r)); | |
1921 record_for_igvn(r); | |
1922 result=_gvn.transform(phi); | |
1923 } | |
1924 | |
6205 | 1925 finish_pow_exp(result, x, y, OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
0 | 1926 |
1927 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1928 | |
1929 return true; | |
1930 } | |
1931 | |
1932 //------------------------------inline_trans------------------------------------- | |
1933 // Inline transcendental instructions, if possible. The Intel hardware gets | |
1934 // these right, no funny corner cases missed. | |
1935 bool LibraryCallKit::inline_trans(vmIntrinsics::ID id) { | |
1936 _sp += arg_size(); // restore stack pointer | |
1937 Node* arg = pop_math_arg(); | |
1938 Node* trans = NULL; | |
1939 | |
1940 switch (id) { | |
1941 case vmIntrinsics::_dlog: | |
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1942 trans = _gvn.transform((Node*)new (C) LogDNode(arg)); |
0 | 1943 break; |
1944 case vmIntrinsics::_dlog10: | |
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1945 trans = _gvn.transform((Node*)new (C) Log10DNode(arg)); |
0 | 1946 break; |
1947 default: | |
1948 assert(false, "bad intrinsic was passed in"); | |
1949 return false; | |
1950 } | |
1951 | |
1952 // Push result back on JVM stack | |
1953 push_pair(trans); | |
1954 return true; | |
1955 } | |
1956 | |
1957 //------------------------------runtime_math----------------------------- | |
1958 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) { | |
1959 Node* a = NULL; | |
1960 Node* b = NULL; | |
1961 | |
1962 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(), | |
1963 "must be (DD)D or (D)D type"); | |
1964 | |
1965 // Inputs | |
1966 _sp += arg_size(); // restore stack pointer | |
1967 if (call_type == OptoRuntime::Math_DD_D_Type()) { | |
1968 b = pop_math_arg(); | |
1969 } | |
1970 a = pop_math_arg(); | |
1971 | |
1972 const TypePtr* no_memory_effects = NULL; | |
1973 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1974 no_memory_effects, | |
1975 a, top(), b, b ? top() : NULL); | |
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1976 Node* value = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+0)); |
0 | 1977 #ifdef ASSERT |
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1978 Node* value_top = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+1)); |
0 | 1979 assert(value_top == top(), "second value must be top"); |
1980 #endif | |
1981 | |
1982 push_pair(value); | |
1983 return true; | |
1984 } | |
1985 | |
1986 //------------------------------inline_math_native----------------------------- | |
1987 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) { | |
1988 switch (id) { | |
1989 // These intrinsics are not properly supported on all hardware | |
1990 case vmIntrinsics::_dcos: return Matcher::has_match_rule(Op_CosD) ? inline_trig(id) : | |
1991 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dcos), "COS"); | |
1992 case vmIntrinsics::_dsin: return Matcher::has_match_rule(Op_SinD) ? inline_trig(id) : | |
1993 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dsin), "SIN"); | |
1994 case vmIntrinsics::_dtan: return Matcher::has_match_rule(Op_TanD) ? inline_trig(id) : | |
1995 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dtan), "TAN"); | |
1996 | |
1997 case vmIntrinsics::_dlog: return Matcher::has_match_rule(Op_LogD) ? inline_trans(id) : | |
1998 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dlog), "LOG"); | |
1999 case vmIntrinsics::_dlog10: return Matcher::has_match_rule(Op_Log10D) ? inline_trans(id) : | |
2000 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dlog10), "LOG10"); | |
2001 | |
2002 // These intrinsics are supported on all hardware | |
2003 case vmIntrinsics::_dsqrt: return Matcher::has_match_rule(Op_SqrtD) ? inline_sqrt(id) : false; | |
2004 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_abs(id) : false; | |
2005 | |
2006 case vmIntrinsics::_dexp: return | |
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2007 Matcher::has_match_rule(Op_ExpD) ? inline_exp(id) : |
0 | 2008 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
2009 case vmIntrinsics::_dpow: return | |
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2010 Matcher::has_match_rule(Op_PowD) ? inline_pow(id) : |
0 | 2011 runtime_math(OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
2012 | |
2013 // These intrinsics are not yet correctly implemented | |
2014 case vmIntrinsics::_datan2: | |
2015 return false; | |
2016 | |
2017 default: | |
2018 ShouldNotReachHere(); | |
2019 return false; | |
2020 } | |
2021 } | |
2022 | |
2023 static bool is_simple_name(Node* n) { | |
2024 return (n->req() == 1 // constant | |
2025 || (n->is_Type() && n->as_Type()->type()->singleton()) | |
2026 || n->is_Proj() // parameter or return value | |
2027 || n->is_Phi() // local of some sort | |
2028 ); | |
2029 } | |
2030 | |
2031 //----------------------------inline_min_max----------------------------------- | |
2032 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) { | |
2033 push(generate_min_max(id, argument(0), argument(1))); | |
2034 | |
2035 return true; | |
2036 } | |
2037 | |
2038 Node* | |
2039 LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) { | |
2040 // These are the candidate return value: | |
2041 Node* xvalue = x0; | |
2042 Node* yvalue = y0; | |
2043 | |
2044 if (xvalue == yvalue) { | |
2045 return xvalue; | |
2046 } | |
2047 | |
2048 bool want_max = (id == vmIntrinsics::_max); | |
2049 | |
2050 const TypeInt* txvalue = _gvn.type(xvalue)->isa_int(); | |
2051 const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int(); | |
2052 if (txvalue == NULL || tyvalue == NULL) return top(); | |
2053 // This is not really necessary, but it is consistent with a | |
2054 // hypothetical MaxINode::Value method: | |
2055 int widen = MAX2(txvalue->_widen, tyvalue->_widen); | |
2056 | |
2057 // %%% This folding logic should (ideally) be in a different place. | |
2058 // Some should be inside IfNode, and there to be a more reliable | |
2059 // transformation of ?: style patterns into cmoves. We also want | |
2060 // more powerful optimizations around cmove and min/max. | |
2061 | |
2062 // Try to find a dominating comparison of these guys. | |
2063 // It can simplify the index computation for Arrays.copyOf | |
2064 // and similar uses of System.arraycopy. | |
2065 // First, compute the normalized version of CmpI(x, y). | |
2066 int cmp_op = Op_CmpI; | |
2067 Node* xkey = xvalue; | |
2068 Node* ykey = yvalue; | |
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2069 Node* ideal_cmpxy = _gvn.transform( new(C) CmpINode(xkey, ykey) ); |
0 | 2070 if (ideal_cmpxy->is_Cmp()) { |
2071 // E.g., if we have CmpI(length - offset, count), | |
2072 // it might idealize to CmpI(length, count + offset) | |
2073 cmp_op = ideal_cmpxy->Opcode(); | |
2074 xkey = ideal_cmpxy->in(1); | |
2075 ykey = ideal_cmpxy->in(2); | |
2076 } | |
2077 | |
2078 // Start by locating any relevant comparisons. | |
2079 Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey; | |
2080 Node* cmpxy = NULL; | |
2081 Node* cmpyx = NULL; | |
2082 for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) { | |
2083 Node* cmp = start_from->fast_out(k); | |
2084 if (cmp->outcnt() > 0 && // must have prior uses | |
2085 cmp->in(0) == NULL && // must be context-independent | |
2086 cmp->Opcode() == cmp_op) { // right kind of compare | |
2087 if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp; | |
2088 if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp; | |
2089 } | |
2090 } | |
2091 | |
2092 const int NCMPS = 2; | |
2093 Node* cmps[NCMPS] = { cmpxy, cmpyx }; | |
2094 int cmpn; | |
2095 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
2096 if (cmps[cmpn] != NULL) break; // find a result | |
2097 } | |
2098 if (cmpn < NCMPS) { | |
2099 // Look for a dominating test that tells us the min and max. | |
2100 int depth = 0; // Limit search depth for speed | |
2101 Node* dom = control(); | |
2102 for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) { | |
2103 if (++depth >= 100) break; | |
2104 Node* ifproj = dom; | |
2105 if (!ifproj->is_Proj()) continue; | |
2106 Node* iff = ifproj->in(0); | |
2107 if (!iff->is_If()) continue; | |
2108 Node* bol = iff->in(1); | |
2109 if (!bol->is_Bool()) continue; | |
2110 Node* cmp = bol->in(1); | |
2111 if (cmp == NULL) continue; | |
2112 for (cmpn = 0; cmpn < NCMPS; cmpn++) | |
2113 if (cmps[cmpn] == cmp) break; | |
2114 if (cmpn == NCMPS) continue; | |
2115 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2116 if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate(); | |
2117 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2118 // At this point, we know that 'x btest y' is true. | |
2119 switch (btest) { | |
2120 case BoolTest::eq: | |
2121 // They are proven equal, so we can collapse the min/max. | |
2122 // Either value is the answer. Choose the simpler. | |
2123 if (is_simple_name(yvalue) && !is_simple_name(xvalue)) | |
2124 return yvalue; | |
2125 return xvalue; | |
2126 case BoolTest::lt: // x < y | |
2127 case BoolTest::le: // x <= y | |
2128 return (want_max ? yvalue : xvalue); | |
2129 case BoolTest::gt: // x > y | |
2130 case BoolTest::ge: // x >= y | |
2131 return (want_max ? xvalue : yvalue); | |
2132 } | |
2133 } | |
2134 } | |
2135 | |
2136 // We failed to find a dominating test. | |
2137 // Let's pick a test that might GVN with prior tests. | |
2138 Node* best_bol = NULL; | |
2139 BoolTest::mask best_btest = BoolTest::illegal; | |
2140 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
2141 Node* cmp = cmps[cmpn]; | |
2142 if (cmp == NULL) continue; | |
2143 for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) { | |
2144 Node* bol = cmp->fast_out(j); | |
2145 if (!bol->is_Bool()) continue; | |
2146 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2147 if (btest == BoolTest::eq || btest == BoolTest::ne) continue; | |
2148 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2149 if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) { | |
2150 best_bol = bol->as_Bool(); | |
2151 best_btest = btest; | |
2152 } | |
2153 } | |
2154 } | |
2155 | |
2156 Node* answer_if_true = NULL; | |
2157 Node* answer_if_false = NULL; | |
2158 switch (best_btest) { | |
2159 default: | |
2160 if (cmpxy == NULL) | |
2161 cmpxy = ideal_cmpxy; | |
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2162 best_bol = _gvn.transform( new(C) BoolNode(cmpxy, BoolTest::lt) ); |
0 | 2163 // and fall through: |
2164 case BoolTest::lt: // x < y | |
2165 case BoolTest::le: // x <= y | |
2166 answer_if_true = (want_max ? yvalue : xvalue); | |
2167 answer_if_false = (want_max ? xvalue : yvalue); | |
2168 break; | |
2169 case BoolTest::gt: // x > y | |
2170 case BoolTest::ge: // x >= y | |
2171 answer_if_true = (want_max ? xvalue : yvalue); | |
2172 answer_if_false = (want_max ? yvalue : xvalue); | |
2173 break; | |
2174 } | |
2175 | |
2176 jint hi, lo; | |
2177 if (want_max) { | |
2178 // We can sharpen the minimum. | |
2179 hi = MAX2(txvalue->_hi, tyvalue->_hi); | |
2180 lo = MAX2(txvalue->_lo, tyvalue->_lo); | |
2181 } else { | |
2182 // We can sharpen the maximum. | |
2183 hi = MIN2(txvalue->_hi, tyvalue->_hi); | |
2184 lo = MIN2(txvalue->_lo, tyvalue->_lo); | |
2185 } | |
2186 | |
2187 // Use a flow-free graph structure, to avoid creating excess control edges | |
2188 // which could hinder other optimizations. | |
2189 // Since Math.min/max is often used with arraycopy, we want | |
2190 // tightly_coupled_allocation to be able to see beyond min/max expressions. | |
2191 Node* cmov = CMoveNode::make(C, NULL, best_bol, | |
2192 answer_if_false, answer_if_true, | |
2193 TypeInt::make(lo, hi, widen)); | |
2194 | |
2195 return _gvn.transform(cmov); | |
2196 | |
2197 /* | |
2198 // This is not as desirable as it may seem, since Min and Max | |
2199 // nodes do not have a full set of optimizations. | |
2200 // And they would interfere, anyway, with 'if' optimizations | |
2201 // and with CMoveI canonical forms. | |
2202 switch (id) { | |
2203 case vmIntrinsics::_min: | |
2204 result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break; | |
2205 case vmIntrinsics::_max: | |
2206 result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break; | |
2207 default: | |
2208 ShouldNotReachHere(); | |
2209 } | |
2210 */ | |
2211 } | |
2212 | |
2213 inline int | |
2214 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset) { | |
2215 const TypePtr* base_type = TypePtr::NULL_PTR; | |
2216 if (base != NULL) base_type = _gvn.type(base)->isa_ptr(); | |
2217 if (base_type == NULL) { | |
2218 // Unknown type. | |
2219 return Type::AnyPtr; | |
2220 } else if (base_type == TypePtr::NULL_PTR) { | |
2221 // Since this is a NULL+long form, we have to switch to a rawptr. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2222 base = _gvn.transform( new (C) CastX2PNode(offset) ); |
0 | 2223 offset = MakeConX(0); |
2224 return Type::RawPtr; | |
2225 } else if (base_type->base() == Type::RawPtr) { | |
2226 return Type::RawPtr; | |
2227 } else if (base_type->isa_oopptr()) { | |
2228 // Base is never null => always a heap address. | |
2229 if (base_type->ptr() == TypePtr::NotNull) { | |
2230 return Type::OopPtr; | |
2231 } | |
2232 // Offset is small => always a heap address. | |
2233 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t(); | |
2234 if (offset_type != NULL && | |
2235 base_type->offset() == 0 && // (should always be?) | |
2236 offset_type->_lo >= 0 && | |
2237 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) { | |
2238 return Type::OopPtr; | |
2239 } | |
2240 // Otherwise, it might either be oop+off or NULL+addr. | |
2241 return Type::AnyPtr; | |
2242 } else { | |
2243 // No information: | |
2244 return Type::AnyPtr; | |
2245 } | |
2246 } | |
2247 | |
2248 inline Node* LibraryCallKit::make_unsafe_address(Node* base, Node* offset) { | |
2249 int kind = classify_unsafe_addr(base, offset); | |
2250 if (kind == Type::RawPtr) { | |
2251 return basic_plus_adr(top(), base, offset); | |
2252 } else { | |
2253 return basic_plus_adr(base, offset); | |
2254 } | |
2255 } | |
2256 | |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2257 //-------------------inline_numberOfLeadingZeros_int/long----------------------- |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2258 // inline int Integer.numberOfLeadingZeros(int) |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2259 // inline int Long.numberOfLeadingZeros(long) |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2260 bool LibraryCallKit::inline_numberOfLeadingZeros(vmIntrinsics::ID id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2261 assert(id == vmIntrinsics::_numberOfLeadingZeros_i || id == vmIntrinsics::_numberOfLeadingZeros_l, "not numberOfLeadingZeros"); |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2262 if (id == vmIntrinsics::_numberOfLeadingZeros_i && !Matcher::match_rule_supported(Op_CountLeadingZerosI)) return false; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2263 if (id == vmIntrinsics::_numberOfLeadingZeros_l && !Matcher::match_rule_supported(Op_CountLeadingZerosL)) return false; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2264 _sp += arg_size(); // restore stack pointer |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2265 switch (id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2266 case vmIntrinsics::_numberOfLeadingZeros_i: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2267 push(_gvn.transform(new (C) CountLeadingZerosINode(pop()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2268 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2269 case vmIntrinsics::_numberOfLeadingZeros_l: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2270 push(_gvn.transform(new (C) CountLeadingZerosLNode(pop_pair()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2271 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2272 default: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2273 ShouldNotReachHere(); |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2274 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2275 return true; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2276 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2277 |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2278 //-------------------inline_numberOfTrailingZeros_int/long---------------------- |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2279 // inline int Integer.numberOfTrailingZeros(int) |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2280 // inline int Long.numberOfTrailingZeros(long) |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2281 bool LibraryCallKit::inline_numberOfTrailingZeros(vmIntrinsics::ID id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2282 assert(id == vmIntrinsics::_numberOfTrailingZeros_i || id == vmIntrinsics::_numberOfTrailingZeros_l, "not numberOfTrailingZeros"); |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2283 if (id == vmIntrinsics::_numberOfTrailingZeros_i && !Matcher::match_rule_supported(Op_CountTrailingZerosI)) return false; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2284 if (id == vmIntrinsics::_numberOfTrailingZeros_l && !Matcher::match_rule_supported(Op_CountTrailingZerosL)) return false; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2285 _sp += arg_size(); // restore stack pointer |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2286 switch (id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2287 case vmIntrinsics::_numberOfTrailingZeros_i: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2288 push(_gvn.transform(new (C) CountTrailingZerosINode(pop()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2289 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2290 case vmIntrinsics::_numberOfTrailingZeros_l: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2291 push(_gvn.transform(new (C) CountTrailingZerosLNode(pop_pair()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2292 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2293 default: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2294 ShouldNotReachHere(); |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2295 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2296 return true; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2297 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2298 |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2299 //----------------------------inline_bitCount_int/long----------------------- |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2300 // inline int Integer.bitCount(int) |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2301 // inline int Long.bitCount(long) |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2302 bool LibraryCallKit::inline_bitCount(vmIntrinsics::ID id) { |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2303 assert(id == vmIntrinsics::_bitCount_i || id == vmIntrinsics::_bitCount_l, "not bitCount"); |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2304 if (id == vmIntrinsics::_bitCount_i && !Matcher::has_match_rule(Op_PopCountI)) return false; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2305 if (id == vmIntrinsics::_bitCount_l && !Matcher::has_match_rule(Op_PopCountL)) return false; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2306 _sp += arg_size(); // restore stack pointer |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2307 switch (id) { |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2308 case vmIntrinsics::_bitCount_i: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2309 push(_gvn.transform(new (C) PopCountINode(pop()))); |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2310 break; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2311 case vmIntrinsics::_bitCount_l: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2312 push(_gvn.transform(new (C) PopCountLNode(pop_pair()))); |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2313 break; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2314 default: |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2315 ShouldNotReachHere(); |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2316 } |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2317 return true; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2318 } |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2319 |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2320 //----------------------------inline_reverseBytes_int/long/char/short------------------- |
605 | 2321 // inline Integer.reverseBytes(int) |
2322 // inline Long.reverseBytes(long) | |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2323 // inline Character.reverseBytes(char) |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2324 // inline Short.reverseBytes(short) |
0 | 2325 bool LibraryCallKit::inline_reverseBytes(vmIntrinsics::ID id) { |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2326 assert(id == vmIntrinsics::_reverseBytes_i || id == vmIntrinsics::_reverseBytes_l || |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2327 id == vmIntrinsics::_reverseBytes_c || id == vmIntrinsics::_reverseBytes_s, |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2328 "not reverse Bytes"); |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2329 if (id == vmIntrinsics::_reverseBytes_i && !Matcher::has_match_rule(Op_ReverseBytesI)) return false; |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2330 if (id == vmIntrinsics::_reverseBytes_l && !Matcher::has_match_rule(Op_ReverseBytesL)) return false; |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2331 if (id == vmIntrinsics::_reverseBytes_c && !Matcher::has_match_rule(Op_ReverseBytesUS)) return false; |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2332 if (id == vmIntrinsics::_reverseBytes_s && !Matcher::has_match_rule(Op_ReverseBytesS)) return false; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6205
diff
changeset
|
2333 _sp += arg_size(); // restore stack pointer |
0 | 2334 switch (id) { |
2335 case vmIntrinsics::_reverseBytes_i: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2336 push(_gvn.transform(new (C) ReverseBytesINode(0, pop()))); |
0 | 2337 break; |
2338 case vmIntrinsics::_reverseBytes_l: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2339 push_pair(_gvn.transform(new (C) ReverseBytesLNode(0, pop_pair()))); |
0 | 2340 break; |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2341 case vmIntrinsics::_reverseBytes_c: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2342 push(_gvn.transform(new (C) ReverseBytesUSNode(0, pop()))); |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2343 break; |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2344 case vmIntrinsics::_reverseBytes_s: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2345 push(_gvn.transform(new (C) ReverseBytesSNode(0, pop()))); |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2346 break; |
0 | 2347 default: |
2348 ; | |
2349 } | |
2350 return true; | |
2351 } | |
2352 | |
2353 //----------------------------inline_unsafe_access---------------------------- | |
2354 | |
2355 const static BasicType T_ADDRESS_HOLDER = T_LONG; | |
2356 | |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2357 // Helper that guards and inserts a pre-barrier. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2358 void LibraryCallKit::insert_pre_barrier(Node* base_oop, Node* offset, |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2359 Node* pre_val, int nargs, bool need_mem_bar) { |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2360 // We could be accessing the referent field of a reference object. If so, when G1 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2361 // is enabled, we need to log the value in the referent field in an SATB buffer. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2362 // This routine performs some compile time filters and generates suitable |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2363 // runtime filters that guard the pre-barrier code. |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2364 // Also add memory barrier for non volatile load from the referent field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2365 // to prevent commoning of loads across safepoint. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
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|
2366 if (!UseG1GC && !need_mem_bar) |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
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|
2367 return; |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2368 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2369 // Some compile time checks. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2370 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2371 // If offset is a constant, is it java_lang_ref_Reference::_reference_offset? |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2372 const TypeX* otype = offset->find_intptr_t_type(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2373 if (otype != NULL && otype->is_con() && |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2374 otype->get_con() != java_lang_ref_Reference::referent_offset) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2375 // Constant offset but not the reference_offset so just return |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2376 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2377 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2378 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2379 // We only need to generate the runtime guards for instances. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2380 const TypeOopPtr* btype = base_oop->bottom_type()->isa_oopptr(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2381 if (btype != NULL) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2382 if (btype->isa_aryptr()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2383 // Array type so nothing to do |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2384 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2385 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2386 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2387 const TypeInstPtr* itype = btype->isa_instptr(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2388 if (itype != NULL) { |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2389 // Can the klass of base_oop be statically determined to be |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2390 // _not_ a sub-class of Reference and _not_ Object? |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2391 ciKlass* klass = itype->klass(); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2392 if ( klass->is_loaded() && |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2393 !klass->is_subtype_of(env()->Reference_klass()) && |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2394 !env()->Object_klass()->is_subtype_of(klass)) { |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2395 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2396 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2397 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2398 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2399 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2400 // The compile time filters did not reject base_oop/offset so |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2401 // we need to generate the following runtime filters |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2402 // |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2403 // if (offset == java_lang_ref_Reference::_reference_offset) { |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2404 // if (instance_of(base, java.lang.ref.Reference)) { |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2405 // pre_barrier(_, pre_val, ...); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2406 // } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2407 // } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2408 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2409 float likely = PROB_LIKELY(0.999); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2410 float unlikely = PROB_UNLIKELY(0.999); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2411 |
3255 | 2412 IdealKit ideal(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2413 #define __ ideal. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2414 |
3254
59766fd005ff
7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
johnc
parents:
3252
diff
changeset
|
2415 Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2416 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2417 __ if_then(offset, BoolTest::eq, referent_off, unlikely); { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2418 // Update graphKit memory and control from IdealKit. |
3255 | 2419 sync_kit(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2420 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2421 Node* ref_klass_con = makecon(TypeKlassPtr::make(env()->Reference_klass())); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2422 _sp += nargs; // gen_instanceof might do an uncommon trap |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2423 Node* is_instof = gen_instanceof(base_oop, ref_klass_con); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2424 _sp -= nargs; |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2425 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2426 // Update IdealKit memory and control from graphKit. |
3255 | 2427 __ sync_kit(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2428 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2429 Node* one = __ ConI(1); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2430 // is_instof == 0 if base_oop == NULL |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2431 __ if_then(is_instof, BoolTest::eq, one, unlikely); { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2432 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2433 // Update graphKit from IdeakKit. |
3255 | 2434 sync_kit(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2435 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2436 // Use the pre-barrier to record the value in the referent field |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2437 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2438 __ ctrl(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
parents:
3255
diff
changeset
|
2439 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2440 pre_val /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2441 T_OBJECT); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2442 if (need_mem_bar) { |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2443 // Add memory barrier to prevent commoning reads from this field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2444 // across safepoint since GC can change its value. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2445 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2446 } |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2447 // Update IdealKit from graphKit. |
3255 | 2448 __ sync_kit(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2449 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2450 } __ end_if(); // _ref_type != ref_none |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2451 } __ end_if(); // offset == referent_offset |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2452 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2453 // Final sync IdealKit and GraphKit. |
3255 | 2454 final_sync(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2455 #undef __ |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2456 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2457 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2458 |
0 | 2459 // Interpret Unsafe.fieldOffset cookies correctly: |
2460 extern jlong Unsafe_field_offset_to_byte_offset(jlong field_offset); | |
2461 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2462 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2463 // Attempt to infer a sharper value type from the offset and base type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2464 ciKlass* sharpened_klass = NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2465 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2466 // See if it is an instance field, with an object type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2467 if (alias_type->field() != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2468 assert(!is_native_ptr, "native pointer op cannot use a java address"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2469 if (alias_type->field()->type()->is_klass()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2470 sharpened_klass = alias_type->field()->type()->as_klass(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2471 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2472 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2473 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2474 // See if it is a narrow oop array. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2475 if (adr_type->isa_aryptr()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2476 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2477 const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2478 if (elem_type != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2479 sharpened_klass = elem_type->klass(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2480 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2481 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2482 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2483 |
6847
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
twisti
parents:
6804
diff
changeset
|
2484 // The sharpened class might be unloaded if there is no class loader |
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
twisti
parents:
6804
diff
changeset
|
2485 // contraint in place. |
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2486 if (sharpened_klass != NULL && sharpened_klass->is_loaded()) { |
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2487 const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass); |
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2488 |
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2489 #ifndef PRODUCT |
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2490 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { |
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2491 tty->print(" from base type: "); adr_type->dump(); |
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2492 tty->print(" sharpened value: "); tjp->dump(); |
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2493 } |
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2494 #endif |
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2495 // Sharpen the value type. |
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2496 return tjp; |
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|
2497 } |
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2498 return NULL; |
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|
2499 } |
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2500 |
0 | 2501 bool LibraryCallKit::inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile) { |
2502 if (callee()->is_static()) return false; // caller must have the capability! | |
2503 | |
2504 #ifndef PRODUCT | |
2505 { | |
2506 ResourceMark rm; | |
2507 // Check the signatures. | |
2508 ciSignature* sig = signature(); | |
2509 #ifdef ASSERT | |
2510 if (!is_store) { | |
2511 // Object getObject(Object base, int/long offset), etc. | |
2512 BasicType rtype = sig->return_type()->basic_type(); | |
2513 if (rtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::getAddress_name()) | |
2514 rtype = T_ADDRESS; // it is really a C void* | |
2515 assert(rtype == type, "getter must return the expected value"); | |
2516 if (!is_native_ptr) { | |
2517 assert(sig->count() == 2, "oop getter has 2 arguments"); | |
2518 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object"); | |
2519 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct"); | |
2520 } else { | |
2521 assert(sig->count() == 1, "native getter has 1 argument"); | |
2522 assert(sig->type_at(0)->basic_type() == T_LONG, "getter base is long"); | |
2523 } | |
2524 } else { | |
2525 // void putObject(Object base, int/long offset, Object x), etc. | |
2526 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value"); | |
2527 if (!is_native_ptr) { | |
2528 assert(sig->count() == 3, "oop putter has 3 arguments"); | |
2529 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object"); | |
2530 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct"); | |
2531 } else { | |
2532 assert(sig->count() == 2, "native putter has 2 arguments"); | |
2533 assert(sig->type_at(0)->basic_type() == T_LONG, "putter base is long"); | |
2534 } | |
2535 BasicType vtype = sig->type_at(sig->count()-1)->basic_type(); | |
2536 if (vtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::putAddress_name()) | |
2537 vtype = T_ADDRESS; // it is really a C void* | |
2538 assert(vtype == type, "putter must accept the expected value"); | |
2539 } | |
2540 #endif // ASSERT | |
2541 } | |
2542 #endif //PRODUCT | |
2543 | |
2544 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2545 | |
2546 int type_words = type2size[ (type == T_ADDRESS) ? T_LONG : type ]; | |
2547 | |
2548 // Argument words: "this" plus (oop/offset) or (lo/hi) args plus maybe 1 or 2 value words | |
2549 int nargs = 1 + (is_native_ptr ? 2 : 3) + (is_store ? type_words : 0); | |
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2550 assert(callee()->arg_size() == nargs, "must be"); |
0 | 2551 |
2552 debug_only(int saved_sp = _sp); | |
2553 _sp += nargs; | |
2554 | |
2555 Node* val; | |
2556 debug_only(val = (Node*)(uintptr_t)-1); | |
2557 | |
2558 | |
2559 if (is_store) { | |
2560 // Get the value being stored. (Pop it first; it was pushed last.) | |
2561 switch (type) { | |
2562 case T_DOUBLE: | |
2563 case T_LONG: | |
2564 case T_ADDRESS: | |
2565 val = pop_pair(); | |
2566 break; | |
2567 default: | |
2568 val = pop(); | |
2569 } | |
2570 } | |
2571 | |
2572 // Build address expression. See the code in inline_unsafe_prefetch. | |
2573 Node *adr; | |
2574 Node *heap_base_oop = top(); | |
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2575 Node* offset = top(); |
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2576 |
0 | 2577 if (!is_native_ptr) { |
2578 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset | |
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2579 offset = pop_pair(); |
0 | 2580 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
2581 Node* base = pop(); | |
2582 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2583 // to be plain byte offsets, which are also the same as those accepted | |
2584 // by oopDesc::field_base. | |
2585 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2586 "fieldOffset must be byte-scaled"); | |
2587 // 32-bit machines ignore the high half! | |
2588 offset = ConvL2X(offset); | |
2589 adr = make_unsafe_address(base, offset); | |
2590 heap_base_oop = base; | |
2591 } else { | |
2592 Node* ptr = pop_pair(); | |
2593 // Adjust Java long to machine word: | |
2594 ptr = ConvL2X(ptr); | |
2595 adr = make_unsafe_address(NULL, ptr); | |
2596 } | |
2597 | |
2598 // Pop receiver last: it was pushed first. | |
2599 Node *receiver = pop(); | |
2600 | |
2601 assert(saved_sp == _sp, "must have correct argument count"); | |
2602 | |
2603 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2604 | |
2605 // First guess at the value type. | |
2606 const Type *value_type = Type::get_const_basic_type(type); | |
2607 | |
2608 // Try to categorize the address. If it comes up as TypeJavaPtr::BOTTOM, | |
2609 // there was not enough information to nail it down. | |
2610 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2611 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
2612 | |
2613 // We will need memory barriers unless we can determine a unique | |
2614 // alias category for this reference. (Note: If for some reason | |
2615 // the barriers get omitted and the unsafe reference begins to "pollute" | |
2616 // the alias analysis of the rest of the graph, either Compile::can_alias | |
2617 // or Compile::must_alias will throw a diagnostic assert.) | |
2618 bool need_mem_bar = (alias_type->adr_type() == TypeOopPtr::BOTTOM); | |
2619 | |
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2620 // If we are reading the value of the referent field of a Reference |
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2621 // object (either by using Unsafe directly or through reflection) |
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2622 // then, if G1 is enabled, we need to record the referent in an |
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2623 // SATB log buffer using the pre-barrier mechanism. |
6615
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2624 // Also we need to add memory barrier to prevent commoning reads |
09aad8452938
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2625 // from this field across safepoint since GC can change its value. |
09aad8452938
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2626 bool need_read_barrier = !is_native_ptr && !is_store && |
3249
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2627 offset != top() && heap_base_oop != top(); |
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2628 |
0 | 2629 if (!is_store && type == T_OBJECT) { |
6795
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2630 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type, is_native_ptr); |
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2631 if (tjp != NULL) { |
0 | 2632 value_type = tjp; |
2633 } | |
2634 } | |
2635 | |
2636 // Null check on self without removing any arguments. The argument | |
2637 // null check technically happens in the wrong place, which can lead to | |
2638 // invalid stack traces when the primitive is inlined into a method | |
2639 // which handles NullPointerExceptions. | |
2640 _sp += nargs; | |
2641 do_null_check(receiver, T_OBJECT); | |
2642 _sp -= nargs; | |
2643 if (stopped()) { | |
2644 return true; | |
2645 } | |
2646 // Heap pointers get a null-check from the interpreter, | |
2647 // as a courtesy. However, this is not guaranteed by Unsafe, | |
2648 // and it is not possible to fully distinguish unintended nulls | |
2649 // from intended ones in this API. | |
2650 | |
2651 if (is_volatile) { | |
2652 // We need to emit leading and trailing CPU membars (see below) in | |
2653 // addition to memory membars when is_volatile. This is a little | |
2654 // too strong, but avoids the need to insert per-alias-type | |
2655 // volatile membars (for stores; compare Parse::do_put_xxx), which | |
605 | 2656 // we cannot do effectively here because we probably only have a |
0 | 2657 // rough approximation of type. |
2658 need_mem_bar = true; | |
2659 // For Stores, place a memory ordering barrier now. | |
2660 if (is_store) | |
2661 insert_mem_bar(Op_MemBarRelease); | |
2662 } | |
2663 | |
2664 // Memory barrier to prevent normal and 'unsafe' accesses from | |
2665 // bypassing each other. Happens after null checks, so the | |
2666 // exception paths do not take memory state from the memory barrier, | |
2667 // so there's no problems making a strong assert about mixing users | |
2668 // of safe & unsafe memory. Otherwise fails in a CTW of rt.jar | |
2669 // around 5701, class sun/reflect/UnsafeBooleanFieldAccessorImpl. | |
2670 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2671 | |
2672 if (!is_store) { | |
2673 Node* p = make_load(control(), adr, value_type, type, adr_type, is_volatile); | |
2674 // load value and push onto stack | |
2675 switch (type) { | |
2676 case T_BOOLEAN: | |
2677 case T_CHAR: | |
2678 case T_BYTE: | |
2679 case T_SHORT: | |
2680 case T_INT: | |
2681 case T_FLOAT: | |
3249
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2682 push(p); |
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2683 break; |
0 | 2684 case T_OBJECT: |
3249
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|
2685 if (need_read_barrier) { |
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|
2686 insert_pre_barrier(heap_base_oop, offset, p, nargs, !(is_volatile || need_mem_bar)); |
3249
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|
2687 } |
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|
2688 push(p); |
0 | 2689 break; |
2690 case T_ADDRESS: | |
2691 // Cast to an int type. | |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
2692 p = _gvn.transform( new (C) CastP2XNode(NULL,p) ); |
0 | 2693 p = ConvX2L(p); |
2694 push_pair(p); | |
2695 break; | |
2696 case T_DOUBLE: | |
2697 case T_LONG: | |
2698 push_pair( p ); | |
2699 break; | |
2700 default: ShouldNotReachHere(); | |
2701 } | |
2702 } else { | |
2703 // place effect of store into memory | |
2704 switch (type) { | |
2705 case T_DOUBLE: | |
2706 val = dstore_rounding(val); | |
2707 break; | |
2708 case T_ADDRESS: | |
2709 // Repackage the long as a pointer. | |
2710 val = ConvL2X(val); | |
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|
2711 val = _gvn.transform( new (C) CastX2PNode(val) ); |
0 | 2712 break; |
2713 } | |
2714 | |
2715 if (type != T_OBJECT ) { | |
2716 (void) store_to_memory(control(), adr, val, type, adr_type, is_volatile); | |
2717 } else { | |
2718 // Possibly an oop being stored to Java heap or native memory | |
2719 if (!TypePtr::NULL_PTR->higher_equal(_gvn.type(heap_base_oop))) { | |
2720 // oop to Java heap. | |
825 | 2721 (void) store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
0 | 2722 } else { |
2723 // We can't tell at compile time if we are storing in the Java heap or outside | |
2724 // of it. So we need to emit code to conditionally do the proper type of | |
2725 // store. | |
2726 | |
2444
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|
2727 IdealKit ideal(this); |
851
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2728 #define __ ideal. |
0 | 2729 // QQQ who knows what probability is here?? |
851
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2730 __ if_then(heap_base_oop, BoolTest::ne, null(), PROB_UNLIKELY(0.999)); { |
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2731 // Sync IdealKit and graphKit. |
2444
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|
2732 sync_kit(ideal); |
851
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|
2733 Node* st = store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
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2734 // Update IdealKit memory. |
2444
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2735 __ sync_kit(this); |
851
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2736 } __ else_(); { |
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2737 __ store(__ ctrl(), adr, val, type, alias_type->index(), is_volatile); |
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|
2738 } __ end_if(); |
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|
2739 // Final sync IdealKit and GraphKit. |
2444
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|
2740 final_sync(ideal); |
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|
2741 #undef __ |
0 | 2742 } |
2743 } | |
2744 } | |
2745 | |
2746 if (is_volatile) { | |
2747 if (!is_store) | |
2748 insert_mem_bar(Op_MemBarAcquire); | |
2749 else | |
2750 insert_mem_bar(Op_MemBarVolatile); | |
2751 } | |
2752 | |
2753 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2754 | |
2755 return true; | |
2756 } | |
2757 | |
2758 //----------------------------inline_unsafe_prefetch---------------------------- | |
2759 | |
2760 bool LibraryCallKit::inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static) { | |
2761 #ifndef PRODUCT | |
2762 { | |
2763 ResourceMark rm; | |
2764 // Check the signatures. | |
2765 ciSignature* sig = signature(); | |
2766 #ifdef ASSERT | |
2767 // Object getObject(Object base, int/long offset), etc. | |
2768 BasicType rtype = sig->return_type()->basic_type(); | |
2769 if (!is_native_ptr) { | |
2770 assert(sig->count() == 2, "oop prefetch has 2 arguments"); | |
2771 assert(sig->type_at(0)->basic_type() == T_OBJECT, "prefetch base is object"); | |
2772 assert(sig->type_at(1)->basic_type() == T_LONG, "prefetcha offset is correct"); | |
2773 } else { | |
2774 assert(sig->count() == 1, "native prefetch has 1 argument"); | |
2775 assert(sig->type_at(0)->basic_type() == T_LONG, "prefetch base is long"); | |
2776 } | |
2777 #endif // ASSERT | |
2778 } | |
2779 #endif // !PRODUCT | |
2780 | |
2781 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2782 | |
2783 // Argument words: "this" if not static, plus (oop/offset) or (lo/hi) args | |
2784 int nargs = (is_static ? 0 : 1) + (is_native_ptr ? 2 : 3); | |
2785 | |
2786 debug_only(int saved_sp = _sp); | |
2787 _sp += nargs; | |
2788 | |
2789 // Build address expression. See the code in inline_unsafe_access. | |
2790 Node *adr; | |
2791 if (!is_native_ptr) { | |
2792 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset | |
2793 Node* offset = pop_pair(); | |
2794 // The base is either a Java object or a value produced by Unsafe.staticFieldBase | |
2795 Node* base = pop(); | |
2796 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2797 // to be plain byte offsets, which are also the same as those accepted | |
2798 // by oopDesc::field_base. | |
2799 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2800 "fieldOffset must be byte-scaled"); | |
2801 // 32-bit machines ignore the high half! | |
2802 offset = ConvL2X(offset); | |
2803 adr = make_unsafe_address(base, offset); | |
2804 } else { | |
2805 Node* ptr = pop_pair(); | |
2806 // Adjust Java long to machine word: | |
2807 ptr = ConvL2X(ptr); | |
2808 adr = make_unsafe_address(NULL, ptr); | |
2809 } | |
2810 | |
2811 if (is_static) { | |
2812 assert(saved_sp == _sp, "must have correct argument count"); | |
2813 } else { | |
2814 // Pop receiver last: it was pushed first. | |
2815 Node *receiver = pop(); | |
2816 assert(saved_sp == _sp, "must have correct argument count"); | |
2817 | |
2818 // Null check on self without removing any arguments. The argument | |
2819 // null check technically happens in the wrong place, which can lead to | |
2820 // invalid stack traces when the primitive is inlined into a method | |
2821 // which handles NullPointerExceptions. | |
2822 _sp += nargs; | |
2823 do_null_check(receiver, T_OBJECT); | |
2824 _sp -= nargs; | |
2825 if (stopped()) { | |
2826 return true; | |
2827 } | |
2828 } | |
2829 | |
2830 // Generate the read or write prefetch | |
2831 Node *prefetch; | |
2832 if (is_store) { | |
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2833 prefetch = new (C) PrefetchWriteNode(i_o(), adr); |
0 | 2834 } else { |
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2835 prefetch = new (C) PrefetchReadNode(i_o(), adr); |
0 | 2836 } |
2837 prefetch->init_req(0, control()); | |
2838 set_i_o(_gvn.transform(prefetch)); | |
2839 | |
2840 return true; | |
2841 } | |
2842 | |
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2843 //----------------------------inline_unsafe_load_store---------------------------- |
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2844 |
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2845 bool LibraryCallKit::inline_unsafe_load_store(BasicType type, LoadStoreKind kind) { |
0 | 2846 // This basic scheme here is the same as inline_unsafe_access, but |
2847 // differs in enough details that combining them would make the code | |
2848 // overly confusing. (This is a true fact! I originally combined | |
2849 // them, but even I was confused by it!) As much code/comments as | |
2850 // possible are retained from inline_unsafe_access though to make | |
605 | 2851 // the correspondences clearer. - dl |
0 | 2852 |
2853 if (callee()->is_static()) return false; // caller must have the capability! | |
2854 | |
2855 #ifndef PRODUCT | |
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2856 BasicType rtype; |
0 | 2857 { |
2858 ResourceMark rm; | |
2859 ciSignature* sig = signature(); | |
6795
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2860 rtype = sig->return_type()->basic_type(); |
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2861 if (kind == LS_xadd || kind == LS_xchg) { |
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2862 // Check the signatures. |
0 | 2863 #ifdef ASSERT |
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2864 assert(rtype == type, "get and set must return the expected type"); |
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2865 assert(sig->count() == 3, "get and set has 3 arguments"); |
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2866 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object"); |
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2867 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long"); |
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2868 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta"); |
0 | 2869 #endif // ASSERT |
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2870 } else if (kind == LS_cmpxchg) { |
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|
2871 // Check the signatures. |
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|
2872 #ifdef ASSERT |
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2873 assert(rtype == T_BOOLEAN, "CAS must return boolean"); |
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2874 assert(sig->count() == 4, "CAS has 4 arguments"); |
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2875 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); |
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2876 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); |
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2877 #endif // ASSERT |
7eca5de9e0b6
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|
2878 } else { |
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|
2879 ShouldNotReachHere(); |
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2880 } |
0 | 2881 } |
2882 #endif //PRODUCT | |
2883 | |
2884 // number of stack slots per value argument (1 or 2) | |
2885 int type_words = type2size[type]; | |
2886 | |
2887 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2888 | |
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2889 // Argument words: "this" plus oop plus offset (plus oldvalue) plus newvalue/delta; |
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2890 int nargs = 1 + 1 + 2 + ((kind == LS_cmpxchg) ? type_words : 0) + type_words; |
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2891 |
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|
2892 // pop arguments: newval, offset, base, and receiver |
0 | 2893 debug_only(int saved_sp = _sp); |
2894 _sp += nargs; | |
2895 Node* newval = (type_words == 1) ? pop() : pop_pair(); | |
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2896 Node* oldval = (kind == LS_cmpxchg) ? ((type_words == 1) ? pop() : pop_pair()) : NULL; |
0 | 2897 Node *offset = pop_pair(); |
2898 Node *base = pop(); | |
2899 Node *receiver = pop(); | |
2900 assert(saved_sp == _sp, "must have correct argument count"); | |
2901 | |
2902 // Null check receiver. | |
2903 _sp += nargs; | |
2904 do_null_check(receiver, T_OBJECT); | |
2905 _sp -= nargs; | |
2906 if (stopped()) { | |
2907 return true; | |
2908 } | |
2909 | |
2910 // Build field offset expression. | |
2911 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2912 // to be plain byte offsets, which are also the same as those accepted | |
2913 // by oopDesc::field_base. | |
2914 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2915 // 32-bit machines ignore the high half of long offsets | |
2916 offset = ConvL2X(offset); | |
2917 Node* adr = make_unsafe_address(base, offset); | |
2918 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2919 | |
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2920 // For CAS, unlike inline_unsafe_access, there seems no point in |
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2921 // trying to refine types. Just use the coarse types here. |
0 | 2922 const Type *value_type = Type::get_const_basic_type(type); |
2923 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2924 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
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2925 |
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2926 if (kind == LS_xchg && type == T_OBJECT) { |
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2927 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); |
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2928 if (tjp != NULL) { |
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2929 value_type = tjp; |
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2930 } |
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|
2931 } |
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2932 |
0 | 2933 int alias_idx = C->get_alias_index(adr_type); |
2934 | |
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2935 // Memory-model-wise, a LoadStore acts like a little synchronized |
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2936 // block, so needs barriers on each side. These don't translate |
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2937 // into actual barriers on most machines, but we still need rest of |
0 | 2938 // compiler to respect ordering. |
2939 | |
2940 insert_mem_bar(Op_MemBarRelease); | |
2941 insert_mem_bar(Op_MemBarCPUOrder); | |
2942 | |
2943 // 4984716: MemBars must be inserted before this | |
2944 // memory node in order to avoid a false | |
2945 // dependency which will confuse the scheduler. | |
2946 Node *mem = memory(alias_idx); | |
2947 | |
2948 // For now, we handle only those cases that actually exist: ints, | |
2949 // longs, and Object. Adding others should be straightforward. | |
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2950 Node* load_store; |
0 | 2951 switch(type) { |
2952 case T_INT: | |
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2953 if (kind == LS_xadd) { |
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2954 load_store = _gvn.transform(new (C) GetAndAddINode(control(), mem, adr, newval, adr_type)); |
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2955 } else if (kind == LS_xchg) { |
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2956 load_store = _gvn.transform(new (C) GetAndSetINode(control(), mem, adr, newval, adr_type)); |
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2957 } else if (kind == LS_cmpxchg) { |
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2958 load_store = _gvn.transform(new (C) CompareAndSwapINode(control(), mem, adr, newval, oldval)); |
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2959 } else { |
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|
2960 ShouldNotReachHere(); |
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|
2961 } |
0 | 2962 break; |
2963 case T_LONG: | |
6795
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2964 if (kind == LS_xadd) { |
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2965 load_store = _gvn.transform(new (C) GetAndAddLNode(control(), mem, adr, newval, adr_type)); |
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2966 } else if (kind == LS_xchg) { |
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2967 load_store = _gvn.transform(new (C) GetAndSetLNode(control(), mem, adr, newval, adr_type)); |
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2968 } else if (kind == LS_cmpxchg) { |
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2969 load_store = _gvn.transform(new (C) CompareAndSwapLNode(control(), mem, adr, newval, oldval)); |
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2970 } else { |
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|
2971 ShouldNotReachHere(); |
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2972 } |
0 | 2973 break; |
2974 case T_OBJECT: | |
4894
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
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|
2975 // Transformation of a value which could be NULL pointer (CastPP #NULL) |
b9bc6cae88f2
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|
2976 // could be delayed during Parse (for example, in adjust_map_after_if()). |
b9bc6cae88f2
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|
2977 // Execute transformation here to avoid barrier generation in such case. |
b9bc6cae88f2
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|
2978 if (_gvn.type(newval) == TypePtr::NULL_PTR) |
b9bc6cae88f2
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|
2979 newval = _gvn.makecon(TypePtr::NULL_PTR); |
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|
2980 |
b9bc6cae88f2
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|
2981 // Reference stores need a store barrier. |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2385
diff
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|
2982 pre_barrier(true /* do_load*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2385
diff
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|
2983 control(), base, adr, alias_idx, newval, value_type->make_oopptr(), |
e1162778c1c8
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2385
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|
2984 NULL /* pre_val*/, |
e1162778c1c8
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|
2985 T_OBJECT); |
113
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|
2986 #ifdef _LP64 |
163 | 2987 if (adr->bottom_type()->is_ptr_to_narrowoop()) { |
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2988 Node *newval_enc = _gvn.transform(new (C) EncodePNode(newval, newval->bottom_type()->make_narrowoop())); |
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2989 if (kind == LS_xchg) { |
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2990 load_store = _gvn.transform(new (C) GetAndSetNNode(control(), mem, adr, |
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2991 newval_enc, adr_type, value_type->make_narrowoop())); |
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2992 } else { |
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2993 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
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2994 Node *oldval_enc = _gvn.transform(new (C) EncodePNode(oldval, oldval->bottom_type()->make_narrowoop())); |
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2995 load_store = _gvn.transform(new (C) CompareAndSwapNNode(control(), mem, adr, |
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2996 newval_enc, oldval_enc)); |
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2997 } |
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2998 } else |
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|
2999 #endif |
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3000 { |
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3001 if (kind == LS_xchg) { |
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3002 load_store = _gvn.transform(new (C) GetAndSetPNode(control(), mem, adr, newval, adr_type, value_type->is_oopptr())); |
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6725
diff
changeset
|
3003 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
3004 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3005 load_store = _gvn.transform(new (C) CompareAndSwapPNode(control(), mem, adr, newval, oldval)); |
6795
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|
3006 } |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
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174
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|
3007 } |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
3008 post_barrier(control(), load_store, base, adr, alias_idx, newval, T_OBJECT, true); |
0 | 3009 break; |
3010 default: | |
3011 ShouldNotReachHere(); | |
3012 break; | |
3013 } | |
3014 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
3015 // SCMemProjNodes represent the memory state of a LoadStore. Their |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
3016 // main role is to prevent LoadStore nodes from being optimized away |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
3017 // when their results aren't used. |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3018 Node* proj = _gvn.transform( new (C) SCMemProjNode(load_store)); |
0 | 3019 set_memory(proj, alias_idx); |
3020 | |
3021 // Add the trailing membar surrounding the access | |
3022 insert_mem_bar(Op_MemBarCPUOrder); | |
3023 insert_mem_bar(Op_MemBarAcquire); | |
3024 | |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
3025 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
3026 if (type == T_OBJECT && adr->bottom_type()->is_ptr_to_narrowoop() && kind == LS_xchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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diff
changeset
|
3027 load_store = _gvn.transform(new (C) DecodeNNode(load_store, load_store->bottom_type()->make_ptr())); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
3028 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
3029 #endif |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
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|
3030 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
3031 assert(type2size[load_store->bottom_type()->basic_type()] == type2size[rtype], "result type should match"); |
7eca5de9e0b6
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|
3032 push_node(load_store->bottom_type()->basic_type(), load_store); |
0 | 3033 return true; |
3034 } | |
3035 | |
3036 bool LibraryCallKit::inline_unsafe_ordered_store(BasicType type) { | |
3037 // This is another variant of inline_unsafe_access, differing in | |
3038 // that it always issues store-store ("release") barrier and ensures | |
3039 // store-atomicity (which only matters for "long"). | |
3040 | |
3041 if (callee()->is_static()) return false; // caller must have the capability! | |
3042 | |
3043 #ifndef PRODUCT | |
3044 { | |
3045 ResourceMark rm; | |
3046 // Check the signatures. | |
3047 ciSignature* sig = signature(); | |
3048 #ifdef ASSERT | |
3049 BasicType rtype = sig->return_type()->basic_type(); | |
3050 assert(rtype == T_VOID, "must return void"); | |
3051 assert(sig->count() == 3, "has 3 arguments"); | |
3052 assert(sig->type_at(0)->basic_type() == T_OBJECT, "base is object"); | |
3053 assert(sig->type_at(1)->basic_type() == T_LONG, "offset is long"); | |
3054 #endif // ASSERT | |
3055 } | |
3056 #endif //PRODUCT | |
3057 | |
3058 // number of stack slots per value argument (1 or 2) | |
3059 int type_words = type2size[type]; | |
3060 | |
3061 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
3062 | |
3063 // Argument words: "this" plus oop plus offset plus value; | |
3064 int nargs = 1 + 1 + 2 + type_words; | |
3065 | |
3066 // pop arguments: val, offset, base, and receiver | |
3067 debug_only(int saved_sp = _sp); | |
3068 _sp += nargs; | |
3069 Node* val = (type_words == 1) ? pop() : pop_pair(); | |
3070 Node *offset = pop_pair(); | |
3071 Node *base = pop(); | |
3072 Node *receiver = pop(); | |
3073 assert(saved_sp == _sp, "must have correct argument count"); | |
3074 | |
3075 // Null check receiver. | |
3076 _sp += nargs; | |
3077 do_null_check(receiver, T_OBJECT); | |
3078 _sp -= nargs; | |
3079 if (stopped()) { | |
3080 return true; | |
3081 } | |
3082 | |
3083 // Build field offset expression. | |
3084 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
3085 // 32-bit machines ignore the high half of long offsets | |
3086 offset = ConvL2X(offset); | |
3087 Node* adr = make_unsafe_address(base, offset); | |
3088 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
3089 const Type *value_type = Type::get_const_basic_type(type); | |
3090 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
3091 | |
3092 insert_mem_bar(Op_MemBarRelease); | |
3093 insert_mem_bar(Op_MemBarCPUOrder); | |
3094 // Ensure that the store is atomic for longs: | |
3095 bool require_atomic_access = true; | |
3096 Node* store; | |
3097 if (type == T_OBJECT) // reference stores need a store barrier. | |
825 | 3098 store = store_oop_to_unknown(control(), base, adr, adr_type, val, type); |
0 | 3099 else { |
3100 store = store_to_memory(control(), adr, val, type, adr_type, require_atomic_access); | |
3101 } | |
3102 insert_mem_bar(Op_MemBarCPUOrder); | |
3103 return true; | |
3104 } | |
3105 | |
3106 bool LibraryCallKit::inline_unsafe_allocate() { | |
3107 if (callee()->is_static()) return false; // caller must have the capability! | |
3108 int nargs = 1 + 1; | |
3109 assert(signature()->size() == nargs-1, "alloc has 1 argument"); | |
3110 null_check_receiver(callee()); // check then ignore argument(0) | |
3111 _sp += nargs; // set original stack for use by uncommon_trap | |
3112 Node* cls = do_null_check(argument(1), T_OBJECT); | |
3113 _sp -= nargs; | |
3114 if (stopped()) return true; | |
3115 | |
3116 Node* kls = load_klass_from_mirror(cls, false, nargs, NULL, 0); | |
3117 _sp += nargs; // set original stack for use by uncommon_trap | |
3118 kls = do_null_check(kls, T_OBJECT); | |
3119 _sp -= nargs; | |
3120 if (stopped()) return true; // argument was like int.class | |
3121 | |
3122 // Note: The argument might still be an illegal value like | |
3123 // Serializable.class or Object[].class. The runtime will handle it. | |
3124 // But we must make an explicit check for initialization. | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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3125 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3126 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
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3961
diff
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|
3127 // can generate code to load it as unsigned byte. |
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
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|
3128 Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3129 Node* bits = intcon(InstanceKlass::fully_initialized); |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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3130 Node* test = _gvn.transform( new (C) SubINode(inst, bits) ); |
0 | 3131 // The 'test' is non-zero if we need to take a slow path. |
3132 | |
3133 Node* obj = new_instance(kls, test); | |
3134 push(obj); | |
3135 | |
3136 return true; | |
3137 } | |
3138 | |
6006
0105f367a14c
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|
3139 #ifdef TRACE_HAVE_INTRINSICS |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
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diff
changeset
|
3140 /* |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
changeset
|
3141 * oop -> myklass |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3142 * myklass->trace_id |= USED |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
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diff
changeset
|
3143 * return myklass->trace_id & ~0x3 |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
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diff
changeset
|
3144 */ |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
changeset
|
3145 bool LibraryCallKit::inline_native_classID() { |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3146 int nargs = 1 + 1; |
0105f367a14c
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rbackman
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changeset
|
3147 null_check_receiver(callee()); // check then ignore argument(0) |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3148 _sp += nargs; |
0105f367a14c
7160570: Intrinsification support for tracing framework
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|
3149 Node* cls = do_null_check(argument(1), T_OBJECT); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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|
3150 _sp -= nargs; |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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changeset
|
3151 Node* kls = load_klass_from_mirror(cls, false, nargs, NULL, 0); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3152 _sp += nargs; |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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changeset
|
3153 kls = do_null_check(kls, T_OBJECT); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
changeset
|
3154 _sp -= nargs; |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
changeset
|
3155 ByteSize offset = TRACE_ID_OFFSET; |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
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diff
changeset
|
3156 Node* insp = basic_plus_adr(kls, in_bytes(offset)); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
changeset
|
3157 Node* tvalue = make_load(NULL, insp, TypeLong::LONG, T_LONG); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3158 Node* bits = longcon(~0x03l); // ignore bit 0 & 1 |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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diff
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|
3159 Node* andl = _gvn.transform(new (C) AndLNode(tvalue, bits)); |
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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5934
diff
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|
3160 Node* clsused = longcon(0x01l); // set the class bit |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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diff
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|
3161 Node* orl = _gvn.transform(new (C) OrLNode(tvalue, clsused)); |
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
changeset
|
3162 |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3163 const TypePtr *adr_type = _gvn.type(insp)->isa_ptr(); |
0105f367a14c
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|
3164 store_to_memory(control(), insp, orl, T_LONG, adr_type); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3165 push_pair(andl); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
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diff
changeset
|
3166 return true; |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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5934
diff
changeset
|
3167 } |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
changeset
|
3168 |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
changeset
|
3169 bool LibraryCallKit::inline_native_threadID() { |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3170 Node* tls_ptr = NULL; |
0105f367a14c
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diff
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|
3171 Node* cur_thr = generate_current_thread(tls_ptr); |
0105f367a14c
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rbackman
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diff
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|
3172 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3173 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3174 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::thread_id_offset())); |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3175 |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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5934
diff
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|
3176 Node* threadid = NULL; |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
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diff
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|
3177 size_t thread_id_size = OSThread::thread_id_size(); |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3178 if (thread_id_size == (size_t) BytesPerLong) { |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3179 threadid = ConvL2I(make_load(control(), p, TypeLong::LONG, T_LONG)); |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3180 push(threadid); |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3181 } else if (thread_id_size == (size_t) BytesPerInt) { |
0105f367a14c
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|
3182 threadid = make_load(control(), p, TypeInt::INT, T_INT); |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3183 push(threadid); |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3184 } else { |
0105f367a14c
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|
3185 ShouldNotReachHere(); |
0105f367a14c
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|
3186 } |
0105f367a14c
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|
3187 return true; |
0105f367a14c
7160570: Intrinsification support for tracing framework
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diff
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|
3188 } |
0105f367a14c
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|
3189 #endif |
0105f367a14c
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|
3190 |
0 | 3191 //------------------------inline_native_time_funcs-------------- |
3192 // inline code for System.currentTimeMillis() and System.nanoTime() | |
3193 // these have the same type and signature | |
6006
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|
3194 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) { |
0105f367a14c
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|
3195 const TypeFunc *tf = OptoRuntime::void_long_Type(); |
0 | 3196 const TypePtr* no_memory_effects = NULL; |
3197 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects); | |
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|
3198 Node* value = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+0)); |
0 | 3199 #ifdef ASSERT |
6804
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|
3200 Node* value_top = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms + 1)); |
0 | 3201 assert(value_top == top(), "second value must be top"); |
3202 #endif | |
3203 push_pair(value); | |
3204 return true; | |
3205 } | |
3206 | |
3207 //------------------------inline_native_currentThread------------------ | |
3208 bool LibraryCallKit::inline_native_currentThread() { | |
3209 Node* junk = NULL; | |
3210 push(generate_current_thread(junk)); | |
3211 return true; | |
3212 } | |
3213 | |
3214 //------------------------inline_native_isInterrupted------------------ | |
3215 bool LibraryCallKit::inline_native_isInterrupted() { | |
3216 const int nargs = 1+1; // receiver + boolean | |
3217 assert(nargs == arg_size(), "sanity"); | |
3218 // Add a fast path to t.isInterrupted(clear_int): | |
3219 // (t == Thread.current() && (!TLS._osthread._interrupted || !clear_int)) | |
3220 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) | |
3221 // So, in the common case that the interrupt bit is false, | |
3222 // we avoid making a call into the VM. Even if the interrupt bit | |
3223 // is true, if the clear_int argument is false, we avoid the VM call. | |
3224 // However, if the receiver is not currentThread, we must call the VM, | |
3225 // because there must be some locking done around the operation. | |
3226 | |
3227 // We only go to the fast case code if we pass two guards. | |
3228 // Paths which do not pass are accumulated in the slow_region. | |
6804
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|
3229 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3230 record_for_igvn(slow_region); |
6804
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3231 RegionNode* result_rgn = new (C) RegionNode(1+3); // fast1, fast2, slow |
e626685e9f6c
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|
3232 PhiNode* result_val = new (C) PhiNode(result_rgn, TypeInt::BOOL); |
0 | 3233 enum { no_int_result_path = 1, |
3234 no_clear_result_path = 2, | |
3235 slow_result_path = 3 | |
3236 }; | |
3237 | |
3238 // (a) Receiving thread must be the current thread. | |
3239 Node* rec_thr = argument(0); | |
3240 Node* tls_ptr = NULL; | |
3241 Node* cur_thr = generate_current_thread(tls_ptr); | |
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|
3242 Node* cmp_thr = _gvn.transform( new (C) CmpPNode(cur_thr, rec_thr) ); |
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3243 Node* bol_thr = _gvn.transform( new (C) BoolNode(cmp_thr, BoolTest::ne) ); |
0 | 3244 |
3245 bool known_current_thread = (_gvn.type(bol_thr) == TypeInt::ZERO); | |
3246 if (!known_current_thread) | |
3247 generate_slow_guard(bol_thr, slow_region); | |
3248 | |
3249 // (b) Interrupt bit on TLS must be false. | |
3250 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); | |
3251 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); | |
3252 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::interrupted_offset())); | |
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3253 // Set the control input on the field _interrupted read to prevent it floating up. |
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3254 Node* int_bit = make_load(control(), p, TypeInt::BOOL, T_INT); |
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3255 Node* cmp_bit = _gvn.transform( new (C) CmpINode(int_bit, intcon(0)) ); |
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3256 Node* bol_bit = _gvn.transform( new (C) BoolNode(cmp_bit, BoolTest::ne) ); |
0 | 3257 |
3258 IfNode* iff_bit = create_and_map_if(control(), bol_bit, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); | |
3259 | |
3260 // First fast path: if (!TLS._interrupted) return false; | |
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3261 Node* false_bit = _gvn.transform( new (C) IfFalseNode(iff_bit) ); |
0 | 3262 result_rgn->init_req(no_int_result_path, false_bit); |
3263 result_val->init_req(no_int_result_path, intcon(0)); | |
3264 | |
3265 // drop through to next case | |
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3266 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit)) ); |
0 | 3267 |
3268 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. | |
3269 Node* clr_arg = argument(1); | |
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3270 Node* cmp_arg = _gvn.transform( new (C) CmpINode(clr_arg, intcon(0)) ); |
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3271 Node* bol_arg = _gvn.transform( new (C) BoolNode(cmp_arg, BoolTest::ne) ); |
0 | 3272 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); |
3273 | |
3274 // Second fast path: ... else if (!clear_int) return true; | |
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3275 Node* false_arg = _gvn.transform( new (C) IfFalseNode(iff_arg) ); |
0 | 3276 result_rgn->init_req(no_clear_result_path, false_arg); |
3277 result_val->init_req(no_clear_result_path, intcon(1)); | |
3278 | |
3279 // drop through to next case | |
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3280 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg)) ); |
0 | 3281 |
3282 // (d) Otherwise, go to the slow path. | |
3283 slow_region->add_req(control()); | |
3284 set_control( _gvn.transform(slow_region) ); | |
3285 | |
3286 if (stopped()) { | |
3287 // There is no slow path. | |
3288 result_rgn->init_req(slow_result_path, top()); | |
3289 result_val->init_req(slow_result_path, top()); | |
3290 } else { | |
3291 // non-virtual because it is a private non-static | |
3292 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_isInterrupted); | |
3293 | |
3294 Node* slow_val = set_results_for_java_call(slow_call); | |
3295 // this->control() comes from set_results_for_java_call | |
3296 | |
3297 // If we know that the result of the slow call will be true, tell the optimizer! | |
3298 if (known_current_thread) slow_val = intcon(1); | |
3299 | |
3300 Node* fast_io = slow_call->in(TypeFunc::I_O); | |
3301 Node* fast_mem = slow_call->in(TypeFunc::Memory); | |
3302 // These two phis are pre-filled with copies of of the fast IO and Memory | |
3303 Node* io_phi = PhiNode::make(result_rgn, fast_io, Type::ABIO); | |
3304 Node* mem_phi = PhiNode::make(result_rgn, fast_mem, Type::MEMORY, TypePtr::BOTTOM); | |
3305 | |
3306 result_rgn->init_req(slow_result_path, control()); | |
3307 io_phi ->init_req(slow_result_path, i_o()); | |
3308 mem_phi ->init_req(slow_result_path, reset_memory()); | |
3309 result_val->init_req(slow_result_path, slow_val); | |
3310 | |
3311 set_all_memory( _gvn.transform(mem_phi) ); | |
3312 set_i_o( _gvn.transform(io_phi) ); | |
3313 } | |
3314 | |
3315 push_result(result_rgn, result_val); | |
3316 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3317 | |
3318 return true; | |
3319 } | |
3320 | |
3321 //---------------------------load_mirror_from_klass---------------------------- | |
3322 // Given a klass oop, load its java mirror (a java.lang.Class oop). | |
3323 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) { | |
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3324 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset())); |
0 | 3325 return make_load(NULL, p, TypeInstPtr::MIRROR, T_OBJECT); |
3326 } | |
3327 | |
3328 //-----------------------load_klass_from_mirror_common------------------------- | |
3329 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop. | |
3330 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE), | |
3331 // and branch to the given path on the region. | |
3332 // If never_see_null, take an uncommon trap on null, so we can optimistically | |
3333 // compile for the non-null case. | |
3334 // If the region is NULL, force never_see_null = true. | |
3335 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror, | |
3336 bool never_see_null, | |
3337 int nargs, | |
3338 RegionNode* region, | |
3339 int null_path, | |
3340 int offset) { | |
3341 if (region == NULL) never_see_null = true; | |
3342 Node* p = basic_plus_adr(mirror, offset); | |
3343 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
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3344 Node* kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type) ); |
0 | 3345 _sp += nargs; // any deopt will start just before call to enclosing method |
3346 Node* null_ctl = top(); | |
3347 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3348 if (region != NULL) { | |
3349 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class). | |
3350 region->init_req(null_path, null_ctl); | |
3351 } else { | |
3352 assert(null_ctl == top(), "no loose ends"); | |
3353 } | |
3354 _sp -= nargs; | |
3355 return kls; | |
3356 } | |
3357 | |
3358 //--------------------(inline_native_Class_query helpers)--------------------- | |
3359 // Use this for JVM_ACC_INTERFACE, JVM_ACC_IS_CLONEABLE, JVM_ACC_HAS_FINALIZER. | |
3360 // Fall through if (mods & mask) == bits, take the guard otherwise. | |
3361 Node* LibraryCallKit::generate_access_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) { | |
3362 // Branch around if the given klass has the given modifier bit set. | |
3363 // Like generate_guard, adds a new path onto the region. | |
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3364 Node* modp = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3365 Node* mods = make_load(NULL, modp, TypeInt::INT, T_INT); |
3366 Node* mask = intcon(modifier_mask); | |
3367 Node* bits = intcon(modifier_bits); | |
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3368 Node* mbit = _gvn.transform( new (C) AndINode(mods, mask) ); |
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3369 Node* cmp = _gvn.transform( new (C) CmpINode(mbit, bits) ); |
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3370 Node* bol = _gvn.transform( new (C) BoolNode(cmp, BoolTest::ne) ); |
0 | 3371 return generate_fair_guard(bol, region); |
3372 } | |
3373 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) { | |
3374 return generate_access_flags_guard(kls, JVM_ACC_INTERFACE, 0, region); | |
3375 } | |
3376 | |
3377 //-------------------------inline_native_Class_query------------------- | |
3378 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) { | |
3379 int nargs = 1+0; // just the Class mirror, in most cases | |
3380 const Type* return_type = TypeInt::BOOL; | |
3381 Node* prim_return_value = top(); // what happens if it's a primitive class? | |
3382 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3383 bool expect_prim = false; // most of these guys expect to work on refs | |
3384 | |
3385 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT }; | |
3386 | |
3387 switch (id) { | |
3388 case vmIntrinsics::_isInstance: | |
3389 nargs = 1+1; // the Class mirror, plus the object getting queried about | |
3390 // nothing is an instance of a primitive type | |
3391 prim_return_value = intcon(0); | |
3392 break; | |
3393 case vmIntrinsics::_getModifiers: | |
3394 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3395 assert(is_power_of_2((int)JVM_ACC_WRITTEN_FLAGS+1), "change next line"); | |
3396 return_type = TypeInt::make(0, JVM_ACC_WRITTEN_FLAGS, Type::WidenMin); | |
3397 break; | |
3398 case vmIntrinsics::_isInterface: | |
3399 prim_return_value = intcon(0); | |
3400 break; | |
3401 case vmIntrinsics::_isArray: | |
3402 prim_return_value = intcon(0); | |
3403 expect_prim = true; // cf. ObjectStreamClass.getClassSignature | |
3404 break; | |
3405 case vmIntrinsics::_isPrimitive: | |
3406 prim_return_value = intcon(1); | |
3407 expect_prim = true; // obviously | |
3408 break; | |
3409 case vmIntrinsics::_getSuperclass: | |
3410 prim_return_value = null(); | |
3411 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3412 break; | |
3413 case vmIntrinsics::_getComponentType: | |
3414 prim_return_value = null(); | |
3415 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3416 break; | |
3417 case vmIntrinsics::_getClassAccessFlags: | |
3418 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3419 return_type = TypeInt::INT; // not bool! 6297094 | |
3420 break; | |
3421 default: | |
3422 ShouldNotReachHere(); | |
3423 } | |
3424 | |
3425 Node* mirror = argument(0); | |
3426 Node* obj = (nargs <= 1)? top(): argument(1); | |
3427 | |
3428 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); | |
3429 if (mirror_con == NULL) return false; // cannot happen? | |
3430 | |
3431 #ifndef PRODUCT | |
3432 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { | |
3433 ciType* k = mirror_con->java_mirror_type(); | |
3434 if (k) { | |
3435 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id())); | |
3436 k->print_name(); | |
3437 tty->cr(); | |
3438 } | |
3439 } | |
3440 #endif | |
3441 | |
3442 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive). | |
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3443 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
0 | 3444 record_for_igvn(region); |
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3445 PhiNode* phi = new (C) PhiNode(region, return_type); |
0 | 3446 |
3447 // The mirror will never be null of Reflection.getClassAccessFlags, however | |
3448 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE | |
3449 // if it is. See bug 4774291. | |
3450 | |
3451 // For Reflection.getClassAccessFlags(), the null check occurs in | |
3452 // the wrong place; see inline_unsafe_access(), above, for a similar | |
3453 // situation. | |
3454 _sp += nargs; // set original stack for use by uncommon_trap | |
3455 mirror = do_null_check(mirror, T_OBJECT); | |
3456 _sp -= nargs; | |
3457 // If mirror or obj is dead, only null-path is taken. | |
3458 if (stopped()) return true; | |
3459 | |
3460 if (expect_prim) never_see_null = false; // expect nulls (meaning prims) | |
3461 | |
3462 // Now load the mirror's klass metaobject, and null-check it. | |
3463 // Side-effects region with the control path if the klass is null. | |
3464 Node* kls = load_klass_from_mirror(mirror, never_see_null, nargs, | |
3465 region, _prim_path); | |
3466 // If kls is null, we have a primitive mirror. | |
3467 phi->init_req(_prim_path, prim_return_value); | |
3468 if (stopped()) { push_result(region, phi); return true; } | |
3469 | |
3470 Node* p; // handy temp | |
3471 Node* null_ctl; | |
3472 | |
3473 // Now that we have the non-null klass, we can perform the real query. | |
3474 // For constant classes, the query will constant-fold in LoadNode::Value. | |
3475 Node* query_value = top(); | |
3476 switch (id) { | |
3477 case vmIntrinsics::_isInstance: | |
3478 // nothing is an instance of a primitive type | |
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3479 _sp += nargs; // gen_instanceof might do an uncommon trap |
0 | 3480 query_value = gen_instanceof(obj, kls); |
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3481 _sp -= nargs; |
0 | 3482 break; |
3483 | |
3484 case vmIntrinsics::_getModifiers: | |
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3485 p = basic_plus_adr(kls, in_bytes(Klass::modifier_flags_offset())); |
0 | 3486 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3487 break; | |
3488 | |
3489 case vmIntrinsics::_isInterface: | |
3490 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3491 if (generate_interface_guard(kls, region) != NULL) | |
3492 // A guard was added. If the guard is taken, it was an interface. | |
3493 phi->add_req(intcon(1)); | |
3494 // If we fall through, it's a plain class. | |
3495 query_value = intcon(0); | |
3496 break; | |
3497 | |
3498 case vmIntrinsics::_isArray: | |
3499 // (To verify this code sequence, check the asserts in JVM_IsArrayClass.) | |
3500 if (generate_array_guard(kls, region) != NULL) | |
3501 // A guard was added. If the guard is taken, it was an array. | |
3502 phi->add_req(intcon(1)); | |
3503 // If we fall through, it's a plain class. | |
3504 query_value = intcon(0); | |
3505 break; | |
3506 | |
3507 case vmIntrinsics::_isPrimitive: | |
3508 query_value = intcon(0); // "normal" path produces false | |
3509 break; | |
3510 | |
3511 case vmIntrinsics::_getSuperclass: | |
3512 // The rules here are somewhat unfortunate, but we can still do better | |
3513 // with random logic than with a JNI call. | |
3514 // Interfaces store null or Object as _super, but must report null. | |
3515 // Arrays store an intermediate super as _super, but must report Object. | |
3516 // Other types can report the actual _super. | |
3517 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3518 if (generate_interface_guard(kls, region) != NULL) | |
3519 // A guard was added. If the guard is taken, it was an interface. | |
3520 phi->add_req(null()); | |
3521 if (generate_array_guard(kls, region) != NULL) | |
3522 // A guard was added. If the guard is taken, it was an array. | |
3523 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror()))); | |
3524 // If we fall through, it's a plain class. Get its _super. | |
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3525 p = basic_plus_adr(kls, in_bytes(Klass::super_offset())); |
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3526 kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeKlassPtr::OBJECT_OR_NULL) ); |
0 | 3527 null_ctl = top(); |
3528 kls = null_check_oop(kls, &null_ctl); | |
3529 if (null_ctl != top()) { | |
3530 // If the guard is taken, Object.superClass is null (both klass and mirror). | |
3531 region->add_req(null_ctl); | |
3532 phi ->add_req(null()); | |
3533 } | |
3534 if (!stopped()) { | |
3535 query_value = load_mirror_from_klass(kls); | |
3536 } | |
3537 break; | |
3538 | |
3539 case vmIntrinsics::_getComponentType: | |
3540 if (generate_array_guard(kls, region) != NULL) { | |
3541 // Be sure to pin the oop load to the guard edge just created: | |
3542 Node* is_array_ctrl = region->in(region->req()-1); | |
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3543 Node* cma = basic_plus_adr(kls, in_bytes(ArrayKlass::component_mirror_offset())); |
0 | 3544 Node* cmo = make_load(is_array_ctrl, cma, TypeInstPtr::MIRROR, T_OBJECT); |
3545 phi->add_req(cmo); | |
3546 } | |
3547 query_value = null(); // non-array case is null | |
3548 break; | |
3549 | |
3550 case vmIntrinsics::_getClassAccessFlags: | |
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3551 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3552 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3553 break; | |
3554 | |
3555 default: | |
3556 ShouldNotReachHere(); | |
3557 } | |
3558 | |
3559 // Fall-through is the normal case of a query to a real class. | |
3560 phi->init_req(1, query_value); | |
3561 region->init_req(1, control()); | |
3562 | |
3563 push_result(region, phi); | |
3564 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3565 | |
3566 return true; | |
3567 } | |
3568 | |
3569 //--------------------------inline_native_subtype_check------------------------ | |
3570 // This intrinsic takes the JNI calls out of the heart of | |
3571 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc. | |
3572 bool LibraryCallKit::inline_native_subtype_check() { | |
3573 int nargs = 1+1; // the Class mirror, plus the other class getting examined | |
3574 | |
3575 // Pull both arguments off the stack. | |
3576 Node* args[2]; // two java.lang.Class mirrors: superc, subc | |
3577 args[0] = argument(0); | |
3578 args[1] = argument(1); | |
3579 Node* klasses[2]; // corresponding Klasses: superk, subk | |
3580 klasses[0] = klasses[1] = top(); | |
3581 | |
3582 enum { | |
3583 // A full decision tree on {superc is prim, subc is prim}: | |
3584 _prim_0_path = 1, // {P,N} => false | |
3585 // {P,P} & superc!=subc => false | |
3586 _prim_same_path, // {P,P} & superc==subc => true | |
3587 _prim_1_path, // {N,P} => false | |
3588 _ref_subtype_path, // {N,N} & subtype check wins => true | |
3589 _both_ref_path, // {N,N} & subtype check loses => false | |
3590 PATH_LIMIT | |
3591 }; | |
3592 | |
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3593 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
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|
3594 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
0 | 3595 record_for_igvn(region); |
3596 | |
3597 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads | |
3598 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
3599 int class_klass_offset = java_lang_Class::klass_offset_in_bytes(); | |
3600 | |
3601 // First null-check both mirrors and load each mirror's klass metaobject. | |
3602 int which_arg; | |
3603 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3604 Node* arg = args[which_arg]; | |
3605 _sp += nargs; // set original stack for use by uncommon_trap | |
3606 arg = do_null_check(arg, T_OBJECT); | |
3607 _sp -= nargs; | |
3608 if (stopped()) break; | |
3609 args[which_arg] = _gvn.transform(arg); | |
3610 | |
3611 Node* p = basic_plus_adr(arg, class_klass_offset); | |
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3612 Node* kls = LoadKlassNode::make(_gvn, immutable_memory(), p, adr_type, kls_type); |
0 | 3613 klasses[which_arg] = _gvn.transform(kls); |
3614 } | |
3615 | |
3616 // Having loaded both klasses, test each for null. | |
3617 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3618 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3619 Node* kls = klasses[which_arg]; | |
3620 Node* null_ctl = top(); | |
3621 _sp += nargs; // set original stack for use by uncommon_trap | |
3622 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3623 _sp -= nargs; | |
3624 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path); | |
3625 region->init_req(prim_path, null_ctl); | |
3626 if (stopped()) break; | |
3627 klasses[which_arg] = kls; | |
3628 } | |
3629 | |
3630 if (!stopped()) { | |
3631 // now we have two reference types, in klasses[0..1] | |
3632 Node* subk = klasses[1]; // the argument to isAssignableFrom | |
3633 Node* superk = klasses[0]; // the receiver | |
3634 region->set_req(_both_ref_path, gen_subtype_check(subk, superk)); | |
3635 // now we have a successful reference subtype check | |
3636 region->set_req(_ref_subtype_path, control()); | |
3637 } | |
3638 | |
3639 // If both operands are primitive (both klasses null), then | |
3640 // we must return true when they are identical primitives. | |
3641 // It is convenient to test this after the first null klass check. | |
3642 set_control(region->in(_prim_0_path)); // go back to first null check | |
3643 if (!stopped()) { | |
3644 // Since superc is primitive, make a guard for the superc==subc case. | |
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3645 Node* cmp_eq = _gvn.transform( new (C) CmpPNode(args[0], args[1]) ); |
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3646 Node* bol_eq = _gvn.transform( new (C) BoolNode(cmp_eq, BoolTest::eq) ); |
0 | 3647 generate_guard(bol_eq, region, PROB_FAIR); |
3648 if (region->req() == PATH_LIMIT+1) { | |
3649 // A guard was added. If the added guard is taken, superc==subc. | |
3650 region->swap_edges(PATH_LIMIT, _prim_same_path); | |
3651 region->del_req(PATH_LIMIT); | |
3652 } | |
3653 region->set_req(_prim_0_path, control()); // Not equal after all. | |
3654 } | |
3655 | |
3656 // these are the only paths that produce 'true': | |
3657 phi->set_req(_prim_same_path, intcon(1)); | |
3658 phi->set_req(_ref_subtype_path, intcon(1)); | |
3659 | |
3660 // pull together the cases: | |
3661 assert(region->req() == PATH_LIMIT, "sane region"); | |
3662 for (uint i = 1; i < region->req(); i++) { | |
3663 Node* ctl = region->in(i); | |
3664 if (ctl == NULL || ctl == top()) { | |
3665 region->set_req(i, top()); | |
3666 phi ->set_req(i, top()); | |
3667 } else if (phi->in(i) == NULL) { | |
3668 phi->set_req(i, intcon(0)); // all other paths produce 'false' | |
3669 } | |
3670 } | |
3671 | |
3672 set_control(_gvn.transform(region)); | |
3673 push(_gvn.transform(phi)); | |
3674 | |
3675 return true; | |
3676 } | |
3677 | |
3678 //---------------------generate_array_guard_common------------------------ | |
3679 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region, | |
3680 bool obj_array, bool not_array) { | |
3681 // If obj_array/non_array==false/false: | |
3682 // Branch around if the given klass is in fact an array (either obj or prim). | |
3683 // If obj_array/non_array==false/true: | |
3684 // Branch around if the given klass is not an array klass of any kind. | |
3685 // If obj_array/non_array==true/true: | |
3686 // Branch around if the kls is not an oop array (kls is int[], String, etc.) | |
3687 // If obj_array/non_array==true/false: | |
3688 // Branch around if the kls is an oop array (Object[] or subtype) | |
3689 // | |
3690 // Like generate_guard, adds a new path onto the region. | |
3691 jint layout_con = 0; | |
3692 Node* layout_val = get_layout_helper(kls, layout_con); | |
3693 if (layout_val == NULL) { | |
3694 bool query = (obj_array | |
3695 ? Klass::layout_helper_is_objArray(layout_con) | |
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3696 : Klass::layout_helper_is_array(layout_con)); |
0 | 3697 if (query == not_array) { |
3698 return NULL; // never a branch | |
3699 } else { // always a branch | |
3700 Node* always_branch = control(); | |
3701 if (region != NULL) | |
3702 region->add_req(always_branch); | |
3703 set_control(top()); | |
3704 return always_branch; | |
3705 } | |
3706 } | |
3707 // Now test the correct condition. | |
3708 jint nval = (obj_array | |
3709 ? ((jint)Klass::_lh_array_tag_type_value | |
3710 << Klass::_lh_array_tag_shift) | |
3711 : Klass::_lh_neutral_value); | |
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3712 Node* cmp = _gvn.transform( new(C) CmpINode(layout_val, intcon(nval)) ); |
0 | 3713 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array |
3714 // invert the test if we are looking for a non-array | |
3715 if (not_array) btest = BoolTest(btest).negate(); | |
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3716 Node* bol = _gvn.transform( new(C) BoolNode(cmp, btest) ); |
0 | 3717 return generate_fair_guard(bol, region); |
3718 } | |
3719 | |
3720 | |
3721 //-----------------------inline_native_newArray-------------------------- | |
3722 bool LibraryCallKit::inline_native_newArray() { | |
3723 int nargs = 2; | |
3724 Node* mirror = argument(0); | |
3725 Node* count_val = argument(1); | |
3726 | |
3727 _sp += nargs; // set original stack for use by uncommon_trap | |
3728 mirror = do_null_check(mirror, T_OBJECT); | |
3729 _sp -= nargs; | |
163 | 3730 // If mirror or obj is dead, only null-path is taken. |
3731 if (stopped()) return true; | |
0 | 3732 |
3733 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT }; | |
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3734 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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3735 PhiNode* result_val = new(C) PhiNode(result_reg, |
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3736 TypeInstPtr::NOTNULL); |
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3737 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3738 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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3739 TypePtr::BOTTOM); |
0 | 3740 |
3741 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3742 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null, | |
3743 nargs, | |
3744 result_reg, _slow_path); | |
3745 Node* normal_ctl = control(); | |
3746 Node* no_array_ctl = result_reg->in(_slow_path); | |
3747 | |
3748 // Generate code for the slow case. We make a call to newArray(). | |
3749 set_control(no_array_ctl); | |
3750 if (!stopped()) { | |
3751 // Either the input type is void.class, or else the | |
3752 // array klass has not yet been cached. Either the | |
3753 // ensuing call will throw an exception, or else it | |
3754 // will cache the array klass for next time. | |
3755 PreserveJVMState pjvms(this); | |
3756 CallJavaNode* slow_call = generate_method_call_static(vmIntrinsics::_newArray); | |
3757 Node* slow_result = set_results_for_java_call(slow_call); | |
3758 // this->control() comes from set_results_for_java_call | |
3759 result_reg->set_req(_slow_path, control()); | |
3760 result_val->set_req(_slow_path, slow_result); | |
3761 result_io ->set_req(_slow_path, i_o()); | |
3762 result_mem->set_req(_slow_path, reset_memory()); | |
3763 } | |
3764 | |
3765 set_control(normal_ctl); | |
3766 if (!stopped()) { | |
3767 // Normal case: The array type has been cached in the java.lang.Class. | |
3768 // The following call works fine even if the array type is polymorphic. | |
3769 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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3770 Node* obj = new_array(klass_node, count_val, nargs); |
0 | 3771 result_reg->init_req(_normal_path, control()); |
3772 result_val->init_req(_normal_path, obj); | |
3773 result_io ->init_req(_normal_path, i_o()); | |
3774 result_mem->init_req(_normal_path, reset_memory()); | |
3775 } | |
3776 | |
3777 // Return the combined state. | |
3778 set_i_o( _gvn.transform(result_io) ); | |
3779 set_all_memory( _gvn.transform(result_mem) ); | |
3780 push_result(result_reg, result_val); | |
3781 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3782 | |
3783 return true; | |
3784 } | |
3785 | |
3786 //----------------------inline_native_getLength-------------------------- | |
3787 bool LibraryCallKit::inline_native_getLength() { | |
3788 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3789 | |
3790 int nargs = 1; | |
3791 Node* array = argument(0); | |
3792 | |
3793 _sp += nargs; // set original stack for use by uncommon_trap | |
3794 array = do_null_check(array, T_OBJECT); | |
3795 _sp -= nargs; | |
3796 | |
3797 // If array is dead, only null-path is taken. | |
3798 if (stopped()) return true; | |
3799 | |
3800 // Deoptimize if it is a non-array. | |
3801 Node* non_array = generate_non_array_guard(load_object_klass(array), NULL); | |
3802 | |
3803 if (non_array != NULL) { | |
3804 PreserveJVMState pjvms(this); | |
3805 set_control(non_array); | |
3806 _sp += nargs; // push the arguments back on the stack | |
3807 uncommon_trap(Deoptimization::Reason_intrinsic, | |
3808 Deoptimization::Action_maybe_recompile); | |
3809 } | |
3810 | |
3811 // If control is dead, only non-array-path is taken. | |
3812 if (stopped()) return true; | |
3813 | |
3814 // The works fine even if the array type is polymorphic. | |
3815 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
3816 push( load_array_length(array) ); | |
3817 | |
3818 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3819 | |
3820 return true; | |
3821 } | |
3822 | |
3823 //------------------------inline_array_copyOf---------------------------- | |
3824 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) { | |
3825 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3826 | |
3827 // Restore the stack and pop off the arguments. | |
3828 int nargs = 3 + (is_copyOfRange? 1: 0); | |
3829 Node* original = argument(0); | |
3830 Node* start = is_copyOfRange? argument(1): intcon(0); | |
3831 Node* end = is_copyOfRange? argument(2): argument(1); | |
3832 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2); | |
3833 | |
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3834 Node* newcopy; |
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3835 |
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3836 //set the original stack and the reexecute bit for the interpreter to reexecute |
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3837 //the bytecode that invokes Arrays.copyOf if deoptimization happens |
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3838 { PreserveReexecuteState preexecs(this); |
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3839 _sp += nargs; |
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3840 jvms()->set_should_reexecute(true); |
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3841 |
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3842 array_type_mirror = do_null_check(array_type_mirror, T_OBJECT); |
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3843 original = do_null_check(original, T_OBJECT); |
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3844 |
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3845 // Check if a null path was taken unconditionally. |
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3846 if (stopped()) return true; |
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|
3847 |
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3848 Node* orig_length = load_array_length(original); |
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3849 |
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3850 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, 0, |
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3851 NULL, 0); |
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3852 klass_node = do_null_check(klass_node, T_OBJECT); |
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3853 |
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3854 RegionNode* bailout = new (C) RegionNode(1); |
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3855 record_for_igvn(bailout); |
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|
3856 |
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3857 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc. |
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3858 // Bail out if that is so. |
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3859 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout); |
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3860 if (not_objArray != NULL) { |
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3861 // Improve the klass node's type from the new optimistic assumption: |
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3862 ciKlass* ak = ciArrayKlass::make(env()->Object_klass()); |
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3863 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/); |
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3864 Node* cast = new (C) CastPPNode(klass_node, akls); |
902
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3865 cast->init_req(0, control()); |
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3866 klass_node = _gvn.transform(cast); |
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|
3867 } |
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|
3868 |
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3869 // Bail out if either start or end is negative. |
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3870 generate_negative_guard(start, bailout, &start); |
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3871 generate_negative_guard(end, bailout, &end); |
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3872 |
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3873 Node* length = end; |
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3874 if (_gvn.type(start) != TypeInt::ZERO) { |
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3875 length = _gvn.transform( new (C) SubINode(end, start) ); |
902
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3876 } |
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|
3877 |
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|
3878 // Bail out if length is negative. |
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|
3879 // Without this the new_array would throw |
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|
3880 // NegativeArraySizeException but IllegalArgumentException is what |
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|
3881 // should be thrown |
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|
3882 generate_negative_guard(length, bailout, &length); |
902
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|
3883 |
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|
3884 if (bailout->req() > 1) { |
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3885 PreserveJVMState pjvms(this); |
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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|
3886 set_control( _gvn.transform(bailout) ); |
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|
3887 uncommon_trap(Deoptimization::Reason_intrinsic, |
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3888 Deoptimization::Action_maybe_recompile); |
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|
3889 } |
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|
3890 |
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|
3891 if (!stopped()) { |
900
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|
3892 |
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|
3893 // How many elements will we copy from the original? |
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3894 // The answer is MinI(orig_length - start, length). |
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|
3895 Node* orig_tail = _gvn.transform( new(C) SubINode(orig_length, start) ); |
900
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3896 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); |
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3897 |
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3898 newcopy = new_array(klass_node, length, 0); |
900
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3899 |
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|
3900 // Generate a direct call to the right arraycopy function(s). |
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3901 // We know the copy is disjoint but we might not know if the |
9987d9d5eb0e
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|
3902 // oop stores need checking. |
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3903 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). |
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3904 // This will fail a store-check if x contains any non-nulls. |
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3905 bool disjoint_bases = true; |
6180
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3906 // if start > orig_length then the length of the copy may be |
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3907 // negative. |
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3908 bool length_never_negative = !is_copyOfRange; |
900
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3909 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
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3910 original, start, newcopy, intcon(0), moved, |
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3911 disjoint_bases, length_never_negative); |
902
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3912 } |
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3913 } //original reexecute and sp are set back here |
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3914 |
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3915 if(!stopped()) { |
0 | 3916 push(newcopy); |
3917 } | |
3918 | |
3919 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3920 | |
3921 return true; | |
3922 } | |
3923 | |
3924 | |
3925 //----------------------generate_virtual_guard--------------------------- | |
3926 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call. | |
3927 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass, | |
3928 RegionNode* slow_region) { | |
3929 ciMethod* method = callee(); | |
3930 int vtable_index = method->vtable_index(); | |
6725
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3931 // Get the Method* out of the appropriate vtable entry. |
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3932 int entry_offset = (InstanceKlass::vtable_start_offset() + |
0 | 3933 vtable_index*vtableEntry::size()) * wordSize + |
3934 vtableEntry::method_offset_in_bytes(); | |
3935 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset); | |
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3936 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS); |
0 | 3937 |
3938 // Compare the target method with the expected method (e.g., Object.hashCode). | |
6725
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3939 const TypePtr* native_call_addr = TypeMetadataPtr::make(method); |
0 | 3940 |
3941 Node* native_call = makecon(native_call_addr); | |
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3942 Node* chk_native = _gvn.transform( new(C) CmpPNode(target_call, native_call) ); |
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3943 Node* test_native = _gvn.transform( new(C) BoolNode(chk_native, BoolTest::ne) ); |
0 | 3944 |
3945 return generate_slow_guard(test_native, slow_region); | |
3946 } | |
3947 | |
3948 //-----------------------generate_method_call---------------------------- | |
3949 // Use generate_method_call to make a slow-call to the real | |
3950 // method if the fast path fails. An alternative would be to | |
3951 // use a stub like OptoRuntime::slow_arraycopy_Java. | |
3952 // This only works for expanding the current library call, | |
3953 // not another intrinsic. (E.g., don't use this for making an | |
3954 // arraycopy call inside of the copyOf intrinsic.) | |
3955 CallJavaNode* | |
3956 LibraryCallKit::generate_method_call(vmIntrinsics::ID method_id, bool is_virtual, bool is_static) { | |
3957 // When compiling the intrinsic method itself, do not use this technique. | |
3958 guarantee(callee() != C->method(), "cannot make slow-call to self"); | |
3959 | |
3960 ciMethod* method = callee(); | |
3961 // ensure the JVMS we have will be correct for this call | |
3962 guarantee(method_id == method->intrinsic_id(), "must match"); | |
3963 | |
3964 const TypeFunc* tf = TypeFunc::make(method); | |
3965 CallJavaNode* slow_call; | |
3966 if (is_static) { | |
3967 assert(!is_virtual, ""); | |
6804
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3968 slow_call = new(C) CallStaticJavaNode(tf, |
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3969 SharedRuntime::get_resolve_static_call_stub(), |
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|
3970 method, bci()); |
0 | 3971 } else if (is_virtual) { |
3972 null_check_receiver(method); | |
6725
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3973 int vtable_index = Method::invalid_vtable_index; |
0 | 3974 if (UseInlineCaches) { |
3975 // Suppress the vtable call | |
3976 } else { | |
3977 // hashCode and clone are not a miranda methods, | |
3978 // so the vtable index is fixed. | |
3979 // No need to use the linkResolver to get it. | |
3980 vtable_index = method->vtable_index(); | |
3981 } | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3982 slow_call = new(C) CallDynamicJavaNode(tf, |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3983 SharedRuntime::get_resolve_virtual_call_stub(), |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3984 method, vtable_index, bci()); |
0 | 3985 } else { // neither virtual nor static: opt_virtual |
3986 null_check_receiver(method); | |
6804
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|
3987 slow_call = new(C) CallStaticJavaNode(tf, |
0 | 3988 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
3989 method, bci()); | |
3990 slow_call->set_optimized_virtual(true); | |
3991 } | |
3992 set_arguments_for_java_call(slow_call); | |
3993 set_edges_for_java_call(slow_call); | |
3994 return slow_call; | |
3995 } | |
3996 | |
3997 | |
3998 //------------------------------inline_native_hashcode-------------------- | |
3999 // Build special case code for calls to hashCode on an object. | |
4000 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) { | |
4001 assert(is_static == callee()->is_static(), "correct intrinsic selection"); | |
4002 assert(!(is_virtual && is_static), "either virtual, special, or static"); | |
4003 | |
4004 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT }; | |
4005 | |
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4006 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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4007 PhiNode* result_val = new(C) PhiNode(result_reg, |
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7193318: C2: remove number of inputs requirement from Node's new operator
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4008 TypeInt::INT); |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
4009 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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4010 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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|
4011 TypePtr::BOTTOM); |
0 | 4012 Node* obj = NULL; |
4013 if (!is_static) { | |
4014 // Check for hashing null object | |
4015 obj = null_check_receiver(callee()); | |
4016 if (stopped()) return true; // unconditionally null | |
4017 result_reg->init_req(_null_path, top()); | |
4018 result_val->init_req(_null_path, top()); | |
4019 } else { | |
4020 // Do a null check, and return zero if null. | |
4021 // System.identityHashCode(null) == 0 | |
4022 obj = argument(0); | |
4023 Node* null_ctl = top(); | |
4024 obj = null_check_oop(obj, &null_ctl); | |
4025 result_reg->init_req(_null_path, null_ctl); | |
4026 result_val->init_req(_null_path, _gvn.intcon(0)); | |
4027 } | |
4028 | |
4029 // Unconditionally null? Then return right away. | |
4030 if (stopped()) { | |
4031 set_control( result_reg->in(_null_path) ); | |
4032 if (!stopped()) | |
4033 push( result_val ->in(_null_path) ); | |
4034 return true; | |
4035 } | |
4036 | |
4037 // After null check, get the object's klass. | |
4038 Node* obj_klass = load_object_klass(obj); | |
4039 | |
4040 // This call may be virtual (invokevirtual) or bound (invokespecial). | |
4041 // For each case we generate slightly different code. | |
4042 | |
4043 // We only go to the fast case code if we pass a number of guards. The | |
4044 // paths which do not pass are accumulated in the slow_region. | |
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4045 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 4046 record_for_igvn(slow_region); |
4047 | |
4048 // If this is a virtual call, we generate a funny guard. We pull out | |
4049 // the vtable entry corresponding to hashCode() from the target object. | |
4050 // If the target method which we are calling happens to be the native | |
4051 // Object hashCode() method, we pass the guard. We do not need this | |
4052 // guard for non-virtual calls -- the caller is known to be the native | |
4053 // Object hashCode(). | |
4054 if (is_virtual) { | |
4055 generate_virtual_guard(obj_klass, slow_region); | |
4056 } | |
4057 | |
4058 // Get the header out of the object, use LoadMarkNode when available | |
4059 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes()); | |
1609 | 4060 Node* header = make_load(control(), header_addr, TypeX_X, TypeX_X->basic_type()); |
0 | 4061 |
4062 // Test the header to see if it is unlocked. | |
4063 Node *lock_mask = _gvn.MakeConX(markOopDesc::biased_lock_mask_in_place); | |
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4064 Node *lmasked_header = _gvn.transform( new (C) AndXNode(header, lock_mask) ); |
0 | 4065 Node *unlocked_val = _gvn.MakeConX(markOopDesc::unlocked_value); |
6804
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4066 Node *chk_unlocked = _gvn.transform( new (C) CmpXNode( lmasked_header, unlocked_val)); |
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4067 Node *test_unlocked = _gvn.transform( new (C) BoolNode( chk_unlocked, BoolTest::ne) ); |
0 | 4068 |
4069 generate_slow_guard(test_unlocked, slow_region); | |
4070 | |
4071 // Get the hash value and check to see that it has been properly assigned. | |
4072 // We depend on hash_mask being at most 32 bits and avoid the use of | |
4073 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit | |
4074 // vm: see markOop.hpp. | |
4075 Node *hash_mask = _gvn.intcon(markOopDesc::hash_mask); | |
4076 Node *hash_shift = _gvn.intcon(markOopDesc::hash_shift); | |
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4077 Node *hshifted_header= _gvn.transform( new (C) URShiftXNode(header, hash_shift) ); |
0 | 4078 // This hack lets the hash bits live anywhere in the mark object now, as long |
605 | 4079 // as the shift drops the relevant bits into the low 32 bits. Note that |
0 | 4080 // Java spec says that HashCode is an int so there's no point in capturing |
4081 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build). | |
4082 hshifted_header = ConvX2I(hshifted_header); | |
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4083 Node *hash_val = _gvn.transform( new (C) AndINode(hshifted_header, hash_mask) ); |
0 | 4084 |
4085 Node *no_hash_val = _gvn.intcon(markOopDesc::no_hash); | |
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4086 Node *chk_assigned = _gvn.transform( new (C) CmpINode( hash_val, no_hash_val)); |
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4087 Node *test_assigned = _gvn.transform( new (C) BoolNode( chk_assigned, BoolTest::eq) ); |
0 | 4088 |
4089 generate_slow_guard(test_assigned, slow_region); | |
4090 | |
4091 Node* init_mem = reset_memory(); | |
4092 // fill in the rest of the null path: | |
4093 result_io ->init_req(_null_path, i_o()); | |
4094 result_mem->init_req(_null_path, init_mem); | |
4095 | |
4096 result_val->init_req(_fast_path, hash_val); | |
4097 result_reg->init_req(_fast_path, control()); | |
4098 result_io ->init_req(_fast_path, i_o()); | |
4099 result_mem->init_req(_fast_path, init_mem); | |
4100 | |
4101 // Generate code for the slow case. We make a call to hashCode(). | |
4102 set_control(_gvn.transform(slow_region)); | |
4103 if (!stopped()) { | |
4104 // No need for PreserveJVMState, because we're using up the present state. | |
4105 set_all_memory(init_mem); | |
4106 vmIntrinsics::ID hashCode_id = vmIntrinsics::_hashCode; | |
4107 if (is_static) hashCode_id = vmIntrinsics::_identityHashCode; | |
4108 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static); | |
4109 Node* slow_result = set_results_for_java_call(slow_call); | |
4110 // this->control() comes from set_results_for_java_call | |
4111 result_reg->init_req(_slow_path, control()); | |
4112 result_val->init_req(_slow_path, slow_result); | |
4113 result_io ->set_req(_slow_path, i_o()); | |
4114 result_mem ->set_req(_slow_path, reset_memory()); | |
4115 } | |
4116 | |
4117 // Return the combined state. | |
4118 set_i_o( _gvn.transform(result_io) ); | |
4119 set_all_memory( _gvn.transform(result_mem) ); | |
4120 push_result(result_reg, result_val); | |
4121 | |
4122 return true; | |
4123 } | |
4124 | |
4125 //---------------------------inline_native_getClass---------------------------- | |
605 | 4126 // Build special case code for calls to getClass on an object. |
0 | 4127 bool LibraryCallKit::inline_native_getClass() { |
4128 Node* obj = null_check_receiver(callee()); | |
4129 if (stopped()) return true; | |
4130 push( load_mirror_from_klass(load_object_klass(obj)) ); | |
4131 return true; | |
4132 } | |
4133 | |
4134 //-----------------inline_native_Reflection_getCallerClass--------------------- | |
4135 // In the presence of deep enough inlining, getCallerClass() becomes a no-op. | |
4136 // | |
4137 // NOTE that this code must perform the same logic as | |
4138 // vframeStream::security_get_caller_frame in that it must skip | |
4139 // Method.invoke() and auxiliary frames. | |
4140 | |
4141 | |
4142 | |
4143 | |
4144 bool LibraryCallKit::inline_native_Reflection_getCallerClass() { | |
4145 ciMethod* method = callee(); | |
4146 | |
4147 #ifndef PRODUCT | |
4148 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4149 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass"); | |
4150 } | |
4151 #endif | |
4152 | |
4153 debug_only(int saved_sp = _sp); | |
4154 | |
4155 // Argument words: (int depth) | |
4156 int nargs = 1; | |
4157 | |
4158 _sp += nargs; | |
4159 Node* caller_depth_node = pop(); | |
4160 | |
4161 assert(saved_sp == _sp, "must have correct argument count"); | |
4162 | |
4163 // The depth value must be a constant in order for the runtime call | |
4164 // to be eliminated. | |
4165 const TypeInt* caller_depth_type = _gvn.type(caller_depth_node)->isa_int(); | |
4166 if (caller_depth_type == NULL || !caller_depth_type->is_con()) { | |
4167 #ifndef PRODUCT | |
4168 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4169 tty->print_cr(" Bailing out because caller depth was not a constant"); | |
4170 } | |
4171 #endif | |
4172 return false; | |
4173 } | |
4174 // Note that the JVM state at this point does not include the | |
4175 // getCallerClass() frame which we are trying to inline. The | |
4176 // semantics of getCallerClass(), however, are that the "first" | |
4177 // frame is the getCallerClass() frame, so we subtract one from the | |
4178 // requested depth before continuing. We don't inline requests of | |
4179 // getCallerClass(0). | |
4180 int caller_depth = caller_depth_type->get_con() - 1; | |
4181 if (caller_depth < 0) { | |
4182 #ifndef PRODUCT | |
4183 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4184 tty->print_cr(" Bailing out because caller depth was %d", caller_depth); | |
4185 } | |
4186 #endif | |
4187 return false; | |
4188 } | |
4189 | |
4190 if (!jvms()->has_method()) { | |
4191 #ifndef PRODUCT | |
4192 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4193 tty->print_cr(" Bailing out because intrinsic was inlined at top level"); | |
4194 } | |
4195 #endif | |
4196 return false; | |
4197 } | |
4198 int _depth = jvms()->depth(); // cache call chain depth | |
4199 | |
4200 // Walk back up the JVM state to find the caller at the required | |
4201 // depth. NOTE that this code must perform the same logic as | |
4202 // vframeStream::security_get_caller_frame in that it must skip | |
4203 // Method.invoke() and auxiliary frames. Note also that depth is | |
4204 // 1-based (1 is the bottom of the inlining). | |
4205 int inlining_depth = _depth; | |
4206 JVMState* caller_jvms = NULL; | |
4207 | |
4208 if (inlining_depth > 0) { | |
4209 caller_jvms = jvms(); | |
4210 assert(caller_jvms = jvms()->of_depth(inlining_depth), "inlining_depth == our depth"); | |
4211 do { | |
4212 // The following if-tests should be performed in this order | |
4213 if (is_method_invoke_or_aux_frame(caller_jvms)) { | |
4214 // Skip a Method.invoke() or auxiliary frame | |
4215 } else if (caller_depth > 0) { | |
4216 // Skip real frame | |
4217 --caller_depth; | |
4218 } else { | |
4219 // We're done: reached desired caller after skipping. | |
4220 break; | |
4221 } | |
4222 caller_jvms = caller_jvms->caller(); | |
4223 --inlining_depth; | |
4224 } while (inlining_depth > 0); | |
4225 } | |
4226 | |
4227 if (inlining_depth == 0) { | |
4228 #ifndef PRODUCT | |
4229 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4230 tty->print_cr(" Bailing out because caller depth (%d) exceeded inlining depth (%d)", caller_depth_type->get_con(), _depth); | |
4231 tty->print_cr(" JVM state at this point:"); | |
4232 for (int i = _depth; i >= 1; i--) { | |
4233 tty->print_cr(" %d) %s", i, jvms()->of_depth(i)->method()->name()->as_utf8()); | |
4234 } | |
4235 } | |
4236 #endif | |
4237 return false; // Reached end of inlining | |
4238 } | |
4239 | |
4240 // Acquire method holder as java.lang.Class | |
4241 ciInstanceKlass* caller_klass = caller_jvms->method()->holder(); | |
4242 ciInstance* caller_mirror = caller_klass->java_mirror(); | |
4243 // Push this as a constant | |
4244 push(makecon(TypeInstPtr::make(caller_mirror))); | |
4245 #ifndef PRODUCT | |
4246 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4247 tty->print_cr(" Succeeded: caller = %s.%s, caller depth = %d, depth = %d", caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), caller_depth_type->get_con(), _depth); | |
4248 tty->print_cr(" JVM state at this point:"); | |
4249 for (int i = _depth; i >= 1; i--) { | |
4250 tty->print_cr(" %d) %s", i, jvms()->of_depth(i)->method()->name()->as_utf8()); | |
4251 } | |
4252 } | |
4253 #endif | |
4254 return true; | |
4255 } | |
4256 | |
4257 // Helper routine for above | |
4258 bool LibraryCallKit::is_method_invoke_or_aux_frame(JVMState* jvms) { | |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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1027
diff
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|
4259 ciMethod* method = jvms->method(); |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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diff
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|
4260 |
0 | 4261 // Is this the Method.invoke method itself? |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
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1027
diff
changeset
|
4262 if (method->intrinsic_id() == vmIntrinsics::_invoke) |
0 | 4263 return true; |
4264 | |
4265 // Is this a helper, defined somewhere underneath MethodAccessorImpl. | |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
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1027
diff
changeset
|
4266 ciKlass* k = method->holder(); |
0 | 4267 if (k->is_instance_klass()) { |
4268 ciInstanceKlass* ik = k->as_instance_klass(); | |
4269 for (; ik != NULL; ik = ik->super()) { | |
4270 if (ik->name() == ciSymbol::sun_reflect_MethodAccessorImpl() && | |
4271 ik == env()->find_system_klass(ik->name())) { | |
4272 return true; | |
4273 } | |
4274 } | |
4275 } | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6205
diff
changeset
|
4276 else if (method->is_method_handle_intrinsic() || |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6205
diff
changeset
|
4277 method->is_compiled_lambda_form()) { |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1027
diff
changeset
|
4278 // This is an internal adapter frame from the MethodHandleCompiler -- skip it |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1027
diff
changeset
|
4279 return true; |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1027
diff
changeset
|
4280 } |
0 | 4281 |
4282 return false; | |
4283 } | |
4284 | |
4285 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) { | |
4286 // restore the arguments | |
4287 _sp += arg_size(); | |
4288 | |
4289 switch (id) { | |
4290 case vmIntrinsics::_floatToRawIntBits: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4291 push(_gvn.transform( new (C) MoveF2INode(pop()))); |
0 | 4292 break; |
4293 | |
4294 case vmIntrinsics::_intBitsToFloat: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4295 push(_gvn.transform( new (C) MoveI2FNode(pop()))); |
0 | 4296 break; |
4297 | |
4298 case vmIntrinsics::_doubleToRawLongBits: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4299 push_pair(_gvn.transform( new (C) MoveD2LNode(pop_pair()))); |
0 | 4300 break; |
4301 | |
4302 case vmIntrinsics::_longBitsToDouble: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4303 push_pair(_gvn.transform( new (C) MoveL2DNode(pop_pair()))); |
0 | 4304 break; |
4305 | |
4306 case vmIntrinsics::_doubleToLongBits: { | |
4307 Node* value = pop_pair(); | |
4308 | |
4309 // two paths (plus control) merge in a wood | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4310 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4311 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4312 |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4313 Node *cmpisnan = _gvn.transform( new (C) CmpDNode(value, value)); |
0 | 4314 // Build the boolean node |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4315 Node *bolisnan = _gvn.transform( new (C) BoolNode( cmpisnan, BoolTest::ne ) ); |
0 | 4316 |
4317 // Branch either way. | |
4318 // NaN case is less traveled, which makes all the difference. | |
4319 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4320 Node *opt_isnan = _gvn.transform(ifisnan); | |
4321 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4322 IfNode *opt_ifisnan = (IfNode*)opt_isnan; | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4323 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4324 |
4325 set_control(iftrue); | |
4326 | |
4327 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
4328 Node *slow_result = longcon(nan_bits); // return NaN | |
4329 phi->init_req(1, _gvn.transform( slow_result )); | |
4330 r->init_req(1, iftrue); | |
4331 | |
4332 // Else fall through | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4333 Node *iffalse = _gvn.transform( new (C) IfFalseNode(opt_ifisnan) ); |
0 | 4334 set_control(iffalse); |
4335 | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4336 phi->init_req(2, _gvn.transform( new (C) MoveD2LNode(value))); |
0 | 4337 r->init_req(2, iffalse); |
4338 | |
4339 // Post merge | |
4340 set_control(_gvn.transform(r)); | |
4341 record_for_igvn(r); | |
4342 | |
4343 Node* result = _gvn.transform(phi); | |
4344 assert(result->bottom_type()->isa_long(), "must be"); | |
4345 push_pair(result); | |
4346 | |
4347 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
4348 | |
4349 break; | |
4350 } | |
4351 | |
4352 case vmIntrinsics::_floatToIntBits: { | |
4353 Node* value = pop(); | |
4354 | |
4355 // two paths (plus control) merge in a wood | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4356 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4357 Node *phi = new (C) PhiNode(r, TypeInt::INT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4358 |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4359 Node *cmpisnan = _gvn.transform( new (C) CmpFNode(value, value)); |
0 | 4360 // Build the boolean node |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4361 Node *bolisnan = _gvn.transform( new (C) BoolNode( cmpisnan, BoolTest::ne ) ); |
0 | 4362 |
4363 // Branch either way. | |
4364 // NaN case is less traveled, which makes all the difference. | |
4365 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4366 Node *opt_isnan = _gvn.transform(ifisnan); | |
4367 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4368 IfNode *opt_ifisnan = (IfNode*)opt_isnan; | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4369 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4370 |
4371 set_control(iftrue); | |
4372 | |
4373 static const jint nan_bits = 0x7fc00000; | |
4374 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN | |
4375 phi->init_req(1, _gvn.transform( slow_result )); | |
4376 r->init_req(1, iftrue); | |
4377 | |
4378 // Else fall through | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4379 Node *iffalse = _gvn.transform( new (C) IfFalseNode(opt_ifisnan) ); |
0 | 4380 set_control(iffalse); |
4381 | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4382 phi->init_req(2, _gvn.transform( new (C) MoveF2INode(value))); |
0 | 4383 r->init_req(2, iffalse); |
4384 | |
4385 // Post merge | |
4386 set_control(_gvn.transform(r)); | |
4387 record_for_igvn(r); | |
4388 | |
4389 Node* result = _gvn.transform(phi); | |
4390 assert(result->bottom_type()->isa_int(), "must be"); | |
4391 push(result); | |
4392 | |
4393 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
4394 | |
4395 break; | |
4396 } | |
4397 | |
4398 default: | |
4399 ShouldNotReachHere(); | |
4400 } | |
4401 | |
4402 return true; | |
4403 } | |
4404 | |
4405 #ifdef _LP64 | |
4406 #define XTOP ,top() /*additional argument*/ | |
4407 #else //_LP64 | |
4408 #define XTOP /*no additional argument*/ | |
4409 #endif //_LP64 | |
4410 | |
4411 //----------------------inline_unsafe_copyMemory------------------------- | |
4412 bool LibraryCallKit::inline_unsafe_copyMemory() { | |
4413 if (callee()->is_static()) return false; // caller must have the capability! | |
4414 int nargs = 1 + 5 + 3; // 5 args: (src: ptr,off, dst: ptr,off, size) | |
4415 assert(signature()->size() == nargs-1, "copy has 5 arguments"); | |
4416 null_check_receiver(callee()); // check then ignore argument(0) | |
4417 if (stopped()) return true; | |
4418 | |
4419 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
4420 | |
4421 Node* src_ptr = argument(1); | |
4422 Node* src_off = ConvL2X(argument(2)); | |
4423 assert(argument(3)->is_top(), "2nd half of long"); | |
4424 Node* dst_ptr = argument(4); | |
4425 Node* dst_off = ConvL2X(argument(5)); | |
4426 assert(argument(6)->is_top(), "2nd half of long"); | |
4427 Node* size = ConvL2X(argument(7)); | |
4428 assert(argument(8)->is_top(), "2nd half of long"); | |
4429 | |
4430 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
4431 "fieldOffset must be byte-scaled"); | |
4432 | |
4433 Node* src = make_unsafe_address(src_ptr, src_off); | |
4434 Node* dst = make_unsafe_address(dst_ptr, dst_off); | |
4435 | |
4436 // Conservatively insert a memory barrier on all memory slices. | |
4437 // Do not let writes of the copy source or destination float below the copy. | |
4438 insert_mem_bar(Op_MemBarCPUOrder); | |
4439 | |
4440 // Call it. Note that the length argument is not scaled. | |
4441 make_runtime_call(RC_LEAF|RC_NO_FP, | |
4442 OptoRuntime::fast_arraycopy_Type(), | |
4443 StubRoutines::unsafe_arraycopy(), | |
4444 "unsafe_arraycopy", | |
4445 TypeRawPtr::BOTTOM, | |
4446 src, dst, size XTOP); | |
4447 | |
4448 // Do not let reads of the copy destination float above the copy. | |
4449 insert_mem_bar(Op_MemBarCPUOrder); | |
4450 | |
4451 return true; | |
4452 } | |
4453 | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4454 //------------------------clone_coping----------------------------------- |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4455 // Helper function for inline_native_clone. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4456 void LibraryCallKit::copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4457 assert(obj_size != NULL, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4458 Node* raw_obj = alloc_obj->in(1); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4459 assert(alloc_obj->is_CheckCastPP() && raw_obj->is_Proj() && raw_obj->in(0)->is_Allocate(), ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4460 |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4461 AllocateNode* alloc = NULL; |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4462 if (ReduceBulkZeroing) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4463 // We will be completely responsible for initializing this object - |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4464 // mark Initialize node as complete. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4465 alloc = AllocateNode::Ideal_allocation(alloc_obj, &_gvn); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4466 // The object was just allocated - there should be no any stores! |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4467 guarantee(alloc != NULL && alloc->maybe_set_complete(&_gvn), ""); |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4468 // Mark as complete_with_arraycopy so that on AllocateNode |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4469 // expansion, we know this AllocateNode is initialized by an array |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4470 // copy and a StoreStore barrier exists after the array copy. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4471 alloc->initialization()->set_complete_with_arraycopy(); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4472 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4473 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
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changeset
|
4474 // Copy the fastest available way. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4475 // TODO: generate fields copies for small objects instead. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4476 Node* src = obj; |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4477 Node* dest = alloc_obj; |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4478 Node* size = _gvn.transform(obj_size); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4479 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4480 // Exclude the header but include array length to copy by 8 bytes words. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4481 // Can't use base_offset_in_bytes(bt) since basic type is unknown. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4482 int base_off = is_array ? arrayOopDesc::length_offset_in_bytes() : |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4483 instanceOopDesc::base_offset_in_bytes(); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4484 // base_off: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4485 // 8 - 32-bit VM |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4486 // 12 - 64-bit VM, compressed klass |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4487 // 16 - 64-bit VM, normal klass |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4488 if (base_off % BytesPerLong != 0) { |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6847
diff
changeset
|
4489 assert(UseCompressedKlassPointers, ""); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4490 if (is_array) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4491 // Exclude length to copy by 8 bytes words. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4492 base_off += sizeof(int); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4493 } else { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4494 // Include klass to copy by 8 bytes words. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4495 base_off = instanceOopDesc::klass_offset_in_bytes(); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4496 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4497 assert(base_off % BytesPerLong == 0, "expect 8 bytes alignment"); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4498 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4499 src = basic_plus_adr(src, base_off); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4500 dest = basic_plus_adr(dest, base_off); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4501 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4502 // Compute the length also, if needed: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4503 Node* countx = size; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4504 countx = _gvn.transform( new (C) SubXNode(countx, MakeConX(base_off)) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4505 countx = _gvn.transform( new (C) URShiftXNode(countx, intcon(LogBytesPerLong) )); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4506 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4507 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4508 bool disjoint_bases = true; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4509 generate_unchecked_arraycopy(raw_adr_type, T_LONG, disjoint_bases, |
2324 | 4510 src, NULL, dest, NULL, countx, |
4511 /*dest_uninitialized*/true); | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4512 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4513 // If necessary, emit some card marks afterwards. (Non-arrays only.) |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4514 if (card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4515 assert(!is_array, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4516 // Put in store barrier for any and all oops we are sticking |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4517 // into this object. (We could avoid this if we could prove |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4518 // that the object type contains no oop fields at all.) |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4519 Node* no_particular_value = NULL; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4520 Node* no_particular_field = NULL; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4521 int raw_adr_idx = Compile::AliasIdxRaw; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4522 post_barrier(control(), |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4523 memory(raw_adr_type), |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4524 alloc_obj, |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4525 no_particular_field, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4526 raw_adr_idx, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4527 no_particular_value, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4528 T_OBJECT, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4529 false); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4530 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4531 |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4532 // Do not let reads from the cloned object float above the arraycopy. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4533 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4534 // Do not let stores that initialize this object be reordered with |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4535 // a subsequent store that would make this object accessible by |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4536 // other threads. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4537 // Record what AllocateNode this StoreStore protects so that |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4538 // escape analysis can go from the MemBarStoreStoreNode to the |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4539 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4540 // based on the escape status of the AllocateNode. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4541 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress)); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4542 } else { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4543 insert_mem_bar(Op_MemBarCPUOrder); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4544 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4545 } |
0 | 4546 |
4547 //------------------------inline_native_clone---------------------------- | |
4548 // Here are the simple edge cases: | |
4549 // null receiver => normal trap | |
4550 // virtual and clone was overridden => slow path to out-of-line clone | |
4551 // not cloneable or finalizer => slow path to out-of-line Object.clone | |
4552 // | |
4553 // The general case has two steps, allocation and copying. | |
4554 // Allocation has two cases, and uses GraphKit::new_instance or new_array. | |
4555 // | |
4556 // Copying also has two cases, oop arrays and everything else. | |
4557 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy). | |
4558 // Everything else uses the tight inline loop supplied by CopyArrayNode. | |
4559 // | |
4560 // These steps fold up nicely if and when the cloned object's klass | |
4561 // can be sharply typed as an object array, a type array, or an instance. | |
4562 // | |
4563 bool LibraryCallKit::inline_native_clone(bool is_virtual) { | |
4564 int nargs = 1; | |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4565 PhiNode* result_val; |
0 | 4566 |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4567 //set the original stack and the reexecute bit for the interpreter to reexecute |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4568 //the bytecode that invokes Object.clone if deoptimization happens |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4569 { PreserveReexecuteState preexecs(this); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4570 jvms()->set_should_reexecute(true); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4571 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4572 //null_check_receiver will adjust _sp (push and pop) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4573 Node* obj = null_check_receiver(callee()); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4574 if (stopped()) return true; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4575 |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4576 _sp += nargs; |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4577 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4578 Node* obj_klass = load_object_klass(obj); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4579 const TypeKlassPtr* tklass = _gvn.type(obj_klass)->isa_klassptr(); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4580 const TypeOopPtr* toop = ((tklass != NULL) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4581 ? tklass->as_instance_type() |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4582 : TypeInstPtr::NOTNULL); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4583 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4584 // Conservatively insert a memory barrier on all memory slices. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4585 // Do not let writes into the original float below the clone. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4586 insert_mem_bar(Op_MemBarCPUOrder); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4587 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4588 // paths into result_reg: |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4589 enum { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4590 _slow_path = 1, // out-of-line call to clone method (virtual or not) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4591 _objArray_path, // plain array allocation, plus arrayof_oop_arraycopy |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4592 _array_path, // plain array allocation, plus arrayof_long_arraycopy |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4593 _instance_path, // plain instance allocation, plus arrayof_long_arraycopy |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4594 PATH_LIMIT |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4595 }; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4596 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4597 result_val = new(C) PhiNode(result_reg, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4598 TypeInstPtr::NOTNULL); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4599 PhiNode* result_i_o = new(C) PhiNode(result_reg, Type::ABIO); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4600 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4601 TypePtr::BOTTOM); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4602 record_for_igvn(result_reg); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4603 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4604 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4605 int raw_adr_idx = Compile::AliasIdxRaw; |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4606 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4607 Node* array_ctl = generate_array_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4608 if (array_ctl != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4609 // It's an array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4610 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4611 set_control(array_ctl); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4612 Node* obj_length = load_array_length(obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4613 Node* obj_size = NULL; |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents:
2446
diff
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|
4614 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &obj_size); |
900
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|
4615 |
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diff
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|
4616 if (!use_ReduceInitialCardMarks()) { |
9987d9d5eb0e
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|
4617 // If it is an oop array, it requires very special treatment, |
9987d9d5eb0e
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diff
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|
4618 // because card marking is required on each card of the array. |
9987d9d5eb0e
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cfang
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diff
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|
4619 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4620 if (is_obja != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4621 PreserveJVMState pjvms2(this); |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4622 set_control(is_obja); |
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diff
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|
4623 // Generate a direct call to the right arraycopy function(s). |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4624 bool disjoint_bases = true; |
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|
4625 bool length_never_negative = true; |
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diff
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|
4626 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
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|
4627 obj, intcon(0), alloc_obj, intcon(0), |
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cfang
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|
4628 obj_length, |
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diff
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|
4629 disjoint_bases, length_never_negative); |
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|
4630 result_reg->init_req(_objArray_path, control()); |
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|
4631 result_val->init_req(_objArray_path, alloc_obj); |
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|
4632 result_i_o ->set_req(_objArray_path, i_o()); |
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|
4633 result_mem ->set_req(_objArray_path, reset_memory()); |
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|
4634 } |
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|
4635 } |
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|
4636 // Otherwise, there are no card marks to worry about. |
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
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986
diff
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|
4637 // (We can dispense with card marks if we know the allocation |
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diff
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|
4638 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
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diff
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|
4639 // causes the non-eden paths to take compensating steps to |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
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986
diff
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|
4640 // simulate a fresh allocation, so that no further |
39b01ab7035a
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986
diff
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|
4641 // card marks are required in compiled code to initialize |
39b01ab7035a
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986
diff
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|
4642 // the object.) |
900
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|
4643 |
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|
4644 if (!stopped()) { |
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diff
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|
4645 copy_to_clone(obj, alloc_obj, obj_size, true, false); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4646 |
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diff
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|
4647 // Present the results of the copy. |
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diff
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|
4648 result_reg->init_req(_array_path, control()); |
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|
4649 result_val->init_req(_array_path, alloc_obj); |
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diff
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|
4650 result_i_o ->set_req(_array_path, i_o()); |
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|
4651 result_mem ->set_req(_array_path, reset_memory()); |
0 | 4652 } |
4653 } | |
900
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diff
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|
4654 |
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diff
changeset
|
4655 // We only go to the instance fast case code if we pass a number of guards. |
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diff
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|
4656 // The paths which do not pass are accumulated in the slow_region. |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
4657 RegionNode* slow_region = new (C) RegionNode(1); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4658 record_for_igvn(slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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changeset
|
4659 if (!stopped()) { |
9987d9d5eb0e
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diff
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|
4660 // It's an instance (we did array above). Make the slow-path tests. |
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diff
changeset
|
4661 // If this is a virtual call, we generate a funny guard. We grab |
9987d9d5eb0e
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cfang
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diff
changeset
|
4662 // the vtable entry corresponding to clone() from the target object. |
9987d9d5eb0e
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cfang
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diff
changeset
|
4663 // If the target method which we are calling happens to be the |
9987d9d5eb0e
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cfang
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diff
changeset
|
4664 // Object clone() method, we pass the guard. We do not need this |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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|
4665 // guard for non-virtual calls; the caller is known to be the native |
9987d9d5eb0e
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cfang
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diff
changeset
|
4666 // Object clone(). |
9987d9d5eb0e
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cfang
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diff
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|
4667 if (is_virtual) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4668 generate_virtual_guard(obj_klass, slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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|
4669 } |
9987d9d5eb0e
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cfang
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diff
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|
4670 |
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cfang
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diff
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|
4671 // The object must be cloneable and must not have a finalizer. |
9987d9d5eb0e
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cfang
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diff
changeset
|
4672 // Both of these conditions may be checked in a single test. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4673 // We could optimize the cloneable test further, but we don't care. |
9987d9d5eb0e
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cfang
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896
diff
changeset
|
4674 generate_access_flags_guard(obj_klass, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4675 // Test both conditions: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4676 JVM_ACC_IS_CLONEABLE | JVM_ACC_HAS_FINALIZER, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4677 // Must be cloneable but not finalizer: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4678 JVM_ACC_IS_CLONEABLE, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4679 slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4680 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4681 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4682 if (!stopped()) { |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4683 // It's an instance, and it passed the slow-path tests. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4684 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4685 Node* obj_size = NULL; |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents:
2446
diff
changeset
|
4686 Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4687 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4688 copy_to_clone(obj, alloc_obj, obj_size, false, !use_ReduceInitialCardMarks()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4689 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4690 // Present the results of the slow call. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4691 result_reg->init_req(_instance_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4692 result_val->init_req(_instance_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4693 result_i_o ->set_req(_instance_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
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|
4694 result_mem ->set_req(_instance_path, reset_memory()); |
0 | 4695 } |
4696 | |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4697 // Generate code for the slow case. We make a call to clone(). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4698 set_control(_gvn.transform(slow_region)); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4699 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4700 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4701 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_clone, is_virtual); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4702 Node* slow_result = set_results_for_java_call(slow_call); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4703 // this->control() comes from set_results_for_java_call |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4704 result_reg->init_req(_slow_path, control()); |
9987d9d5eb0e
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diff
changeset
|
4705 result_val->init_req(_slow_path, slow_result); |
9987d9d5eb0e
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cfang
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896
diff
changeset
|
4706 result_i_o ->set_req(_slow_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4707 result_mem ->set_req(_slow_path, reset_memory()); |
9987d9d5eb0e
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cfang
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diff
changeset
|
4708 } |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4709 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4710 // Return the combined state. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
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900
diff
changeset
|
4711 set_control( _gvn.transform(result_reg) ); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
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900
diff
changeset
|
4712 set_i_o( _gvn.transform(result_i_o) ); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4713 set_all_memory( _gvn.transform(result_mem) ); |
900
9987d9d5eb0e
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cfang
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diff
changeset
|
4714 } //original reexecute and sp are set back here |
0 | 4715 |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4716 push(_gvn.transform(result_val)); |
0 | 4717 |
4718 return true; | |
4719 } | |
4720 | |
4721 //------------------------------basictype2arraycopy---------------------------- | |
4722 address LibraryCallKit::basictype2arraycopy(BasicType t, | |
4723 Node* src_offset, | |
4724 Node* dest_offset, | |
4725 bool disjoint_bases, | |
2324 | 4726 const char* &name, |
4727 bool dest_uninitialized) { | |
0 | 4728 const TypeInt* src_offset_inttype = gvn().find_int_type(src_offset);; |
4729 const TypeInt* dest_offset_inttype = gvn().find_int_type(dest_offset);; | |
4730 | |
4731 bool aligned = false; | |
4732 bool disjoint = disjoint_bases; | |
4733 | |
4734 // if the offsets are the same, we can treat the memory regions as | |
4735 // disjoint, because either the memory regions are in different arrays, | |
4736 // or they are identical (which we can treat as disjoint.) We can also | |
4737 // treat a copy with a destination index less that the source index | |
4738 // as disjoint since a low->high copy will work correctly in this case. | |
4739 if (src_offset_inttype != NULL && src_offset_inttype->is_con() && | |
4740 dest_offset_inttype != NULL && dest_offset_inttype->is_con()) { | |
4741 // both indices are constants | |
4742 int s_offs = src_offset_inttype->get_con(); | |
4743 int d_offs = dest_offset_inttype->get_con(); | |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
4744 int element_size = type2aelembytes(t); |
0 | 4745 aligned = ((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && |
4746 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0); | |
4747 if (s_offs >= d_offs) disjoint = true; | |
4748 } else if (src_offset == dest_offset && src_offset != NULL) { | |
4749 // This can occur if the offsets are identical non-constants. | |
4750 disjoint = true; | |
4751 } | |
4752 | |
2446 | 4753 return StubRoutines::select_arraycopy_function(t, aligned, disjoint, name, dest_uninitialized); |
0 | 4754 } |
4755 | |
4756 | |
4757 //------------------------------inline_arraycopy----------------------- | |
4758 bool LibraryCallKit::inline_arraycopy() { | |
4759 // Restore the stack and pop off the arguments. | |
4760 int nargs = 5; // 2 oops, 3 ints, no size_t or long | |
4761 assert(callee()->signature()->size() == nargs, "copy has 5 arguments"); | |
4762 | |
4763 Node *src = argument(0); | |
4764 Node *src_offset = argument(1); | |
4765 Node *dest = argument(2); | |
4766 Node *dest_offset = argument(3); | |
4767 Node *length = argument(4); | |
4768 | |
4769 // Compile time checks. If any of these checks cannot be verified at compile time, | |
4770 // we do not make a fast path for this call. Instead, we let the call remain as it | |
4771 // is. The checks we choose to mandate at compile time are: | |
4772 // | |
4773 // (1) src and dest are arrays. | |
4774 const Type* src_type = src->Value(&_gvn); | |
4775 const Type* dest_type = dest->Value(&_gvn); | |
4776 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
4777 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
4778 if (top_src == NULL || top_src->klass() == NULL || | |
4779 top_dest == NULL || top_dest->klass() == NULL) { | |
4780 // Conservatively insert a memory barrier on all memory slices. | |
4781 // Do not let writes into the source float below the arraycopy. | |
4782 insert_mem_bar(Op_MemBarCPUOrder); | |
4783 | |
4784 // Call StubRoutines::generic_arraycopy stub. | |
4785 generate_arraycopy(TypeRawPtr::BOTTOM, T_CONFLICT, | |
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4786 src, src_offset, dest, dest_offset, length); |
0 | 4787 |
4788 // Do not let reads from the destination float above the arraycopy. | |
4789 // Since we cannot type the arrays, we don't know which slices | |
4790 // might be affected. We could restrict this barrier only to those | |
4791 // memory slices which pertain to array elements--but don't bother. | |
4792 if (!InsertMemBarAfterArraycopy) | |
4793 // (If InsertMemBarAfterArraycopy, there is already one in place.) | |
4794 insert_mem_bar(Op_MemBarCPUOrder); | |
4795 return true; | |
4796 } | |
4797 | |
4798 // (2) src and dest arrays must have elements of the same BasicType | |
4799 // Figure out the size and type of the elements we will be copying. | |
4800 BasicType src_elem = top_src->klass()->as_array_klass()->element_type()->basic_type(); | |
4801 BasicType dest_elem = top_dest->klass()->as_array_klass()->element_type()->basic_type(); | |
4802 if (src_elem == T_ARRAY) src_elem = T_OBJECT; | |
4803 if (dest_elem == T_ARRAY) dest_elem = T_OBJECT; | |
4804 | |
4805 if (src_elem != dest_elem || dest_elem == T_VOID) { | |
4806 // The component types are not the same or are not recognized. Punt. | |
4807 // (But, avoid the native method wrapper to JVM_ArrayCopy.) | |
4808 generate_slow_arraycopy(TypePtr::BOTTOM, | |
2324 | 4809 src, src_offset, dest, dest_offset, length, |
4810 /*dest_uninitialized*/false); | |
0 | 4811 return true; |
4812 } | |
4813 | |
4814 //--------------------------------------------------------------------------- | |
4815 // We will make a fast path for this call to arraycopy. | |
4816 | |
4817 // We have the following tests left to perform: | |
4818 // | |
4819 // (3) src and dest must not be null. | |
4820 // (4) src_offset must not be negative. | |
4821 // (5) dest_offset must not be negative. | |
4822 // (6) length must not be negative. | |
4823 // (7) src_offset + length must not exceed length of src. | |
4824 // (8) dest_offset + length must not exceed length of dest. | |
4825 // (9) each element of an oop array must be assignable | |
4826 | |
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4827 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 4828 record_for_igvn(slow_region); |
4829 | |
4830 // (3) operands must not be null | |
4831 // We currently perform our null checks with the do_null_check routine. | |
4832 // This means that the null exceptions will be reported in the caller | |
4833 // rather than (correctly) reported inside of the native arraycopy call. | |
4834 // This should be corrected, given time. We do our null check with the | |
4835 // stack pointer restored. | |
4836 _sp += nargs; | |
4837 src = do_null_check(src, T_ARRAY); | |
4838 dest = do_null_check(dest, T_ARRAY); | |
4839 _sp -= nargs; | |
4840 | |
4841 // (4) src_offset must not be negative. | |
4842 generate_negative_guard(src_offset, slow_region); | |
4843 | |
4844 // (5) dest_offset must not be negative. | |
4845 generate_negative_guard(dest_offset, slow_region); | |
4846 | |
4847 // (6) length must not be negative (moved to generate_arraycopy()). | |
4848 // generate_negative_guard(length, slow_region); | |
4849 | |
4850 // (7) src_offset + length must not exceed length of src. | |
4851 generate_limit_guard(src_offset, length, | |
4852 load_array_length(src), | |
4853 slow_region); | |
4854 | |
4855 // (8) dest_offset + length must not exceed length of dest. | |
4856 generate_limit_guard(dest_offset, length, | |
4857 load_array_length(dest), | |
4858 slow_region); | |
4859 | |
4860 // (9) each element of an oop array must be assignable | |
4861 // The generate_arraycopy subroutine checks this. | |
4862 | |
4863 // This is where the memory effects are placed: | |
4864 const TypePtr* adr_type = TypeAryPtr::get_array_body_type(dest_elem); | |
4865 generate_arraycopy(adr_type, dest_elem, | |
4866 src, src_offset, dest, dest_offset, length, | |
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4867 false, false, slow_region); |
0 | 4868 |
4869 return true; | |
4870 } | |
4871 | |
4872 //-----------------------------generate_arraycopy---------------------- | |
4873 // Generate an optimized call to arraycopy. | |
4874 // Caller must guard against non-arrays. | |
4875 // Caller must determine a common array basic-type for both arrays. | |
4876 // Caller must validate offsets against array bounds. | |
4877 // The slow_region has already collected guard failure paths | |
4878 // (such as out of bounds length or non-conformable array types). | |
4879 // The generated code has this shape, in general: | |
4880 // | |
4881 // if (length == 0) return // via zero_path | |
4882 // slowval = -1 | |
4883 // if (types unknown) { | |
4884 // slowval = call generic copy loop | |
4885 // if (slowval == 0) return // via checked_path | |
4886 // } else if (indexes in bounds) { | |
4887 // if ((is object array) && !(array type check)) { | |
4888 // slowval = call checked copy loop | |
4889 // if (slowval == 0) return // via checked_path | |
4890 // } else { | |
4891 // call bulk copy loop | |
4892 // return // via fast_path | |
4893 // } | |
4894 // } | |
4895 // // adjust params for remaining work: | |
4896 // if (slowval != -1) { | |
4897 // n = -1^slowval; src_offset += n; dest_offset += n; length -= n | |
4898 // } | |
4899 // slow_region: | |
4900 // call slow arraycopy(src, src_offset, dest, dest_offset, length) | |
4901 // return // via slow_call_path | |
4902 // | |
4903 // This routine is used from several intrinsics: System.arraycopy, | |
4904 // Object.clone (the array subcase), and Arrays.copyOf[Range]. | |
4905 // | |
4906 void | |
4907 LibraryCallKit::generate_arraycopy(const TypePtr* adr_type, | |
4908 BasicType basic_elem_type, | |
4909 Node* src, Node* src_offset, | |
4910 Node* dest, Node* dest_offset, | |
4911 Node* copy_length, | |
4912 bool disjoint_bases, | |
4913 bool length_never_negative, | |
4914 RegionNode* slow_region) { | |
4915 | |
4916 if (slow_region == NULL) { | |
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4917 slow_region = new(C) RegionNode(1); |
0 | 4918 record_for_igvn(slow_region); |
4919 } | |
4920 | |
4921 Node* original_dest = dest; | |
4922 AllocateArrayNode* alloc = NULL; // used for zeroing, if needed | |
2324 | 4923 bool dest_uninitialized = false; |
0 | 4924 |
4925 // See if this is the initialization of a newly-allocated array. | |
4926 // If so, we will take responsibility here for initializing it to zero. | |
4927 // (Note: Because tightly_coupled_allocation performs checks on the | |
4928 // out-edges of the dest, we need to avoid making derived pointers | |
4929 // from it until we have checked its uses.) | |
4930 if (ReduceBulkZeroing | |
4931 && !ZeroTLAB // pointless if already zeroed | |
4932 && basic_elem_type != T_CONFLICT // avoid corner case | |
4778 | 4933 && !src->eqv_uncast(dest) |
0 | 4934 && ((alloc = tightly_coupled_allocation(dest, slow_region)) |
4935 != NULL) | |
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4936 && _gvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0 |
0 | 4937 && alloc->maybe_set_complete(&_gvn)) { |
4938 // "You break it, you buy it." | |
4939 InitializeNode* init = alloc->initialization(); | |
4940 assert(init->is_complete(), "we just did this"); | |
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4941 init->set_complete_with_arraycopy(); |
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4942 assert(dest->is_CheckCastPP(), "sanity"); |
0 | 4943 assert(dest->in(0)->in(0) == init, "dest pinned"); |
4944 adr_type = TypeRawPtr::BOTTOM; // all initializations are into raw memory | |
4945 // From this point on, every exit path is responsible for | |
4946 // initializing any non-copied parts of the object to zero. | |
2324 | 4947 // Also, if this flag is set we make sure that arraycopy interacts properly |
4948 // with G1, eliding pre-barriers. See CR 6627983. | |
4949 dest_uninitialized = true; | |
0 | 4950 } else { |
4951 // No zeroing elimination here. | |
4952 alloc = NULL; | |
4953 //original_dest = dest; | |
2324 | 4954 //dest_uninitialized = false; |
0 | 4955 } |
4956 | |
4957 // Results are placed here: | |
4958 enum { fast_path = 1, // normal void-returning assembly stub | |
4959 checked_path = 2, // special assembly stub with cleanup | |
4960 slow_call_path = 3, // something went wrong; call the VM | |
4961 zero_path = 4, // bypass when length of copy is zero | |
4962 bcopy_path = 5, // copy primitive array by 64-bit blocks | |
4963 PATH_LIMIT = 6 | |
4964 }; | |
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4965 RegionNode* result_region = new(C) RegionNode(PATH_LIMIT); |
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4966 PhiNode* result_i_o = new(C) PhiNode(result_region, Type::ABIO); |
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4967 PhiNode* result_memory = new(C) PhiNode(result_region, Type::MEMORY, adr_type); |
0 | 4968 record_for_igvn(result_region); |
4969 _gvn.set_type_bottom(result_i_o); | |
4970 _gvn.set_type_bottom(result_memory); | |
4971 assert(adr_type != TypePtr::BOTTOM, "must be RawMem or a T[] slice"); | |
4972 | |
4973 // The slow_control path: | |
4974 Node* slow_control; | |
4975 Node* slow_i_o = i_o(); | |
4976 Node* slow_mem = memory(adr_type); | |
4977 debug_only(slow_control = (Node*) badAddress); | |
4978 | |
4979 // Checked control path: | |
4980 Node* checked_control = top(); | |
4981 Node* checked_mem = NULL; | |
4982 Node* checked_i_o = NULL; | |
4983 Node* checked_value = NULL; | |
4984 | |
4985 if (basic_elem_type == T_CONFLICT) { | |
2324 | 4986 assert(!dest_uninitialized, ""); |
0 | 4987 Node* cv = generate_generic_arraycopy(adr_type, |
4988 src, src_offset, dest, dest_offset, | |
2324 | 4989 copy_length, dest_uninitialized); |
0 | 4990 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4991 checked_control = control(); | |
4992 checked_i_o = i_o(); | |
4993 checked_mem = memory(adr_type); | |
4994 checked_value = cv; | |
4995 set_control(top()); // no fast path | |
4996 } | |
4997 | |
4998 Node* not_pos = generate_nonpositive_guard(copy_length, length_never_negative); | |
4999 if (not_pos != NULL) { | |
5000 PreserveJVMState pjvms(this); | |
5001 set_control(not_pos); | |
5002 | |
5003 // (6) length must not be negative. | |
5004 if (!length_never_negative) { | |
5005 generate_negative_guard(copy_length, slow_region); | |
5006 } | |
5007 | |
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5008 // copy_length is 0. |
2324 | 5009 if (!stopped() && dest_uninitialized) { |
0 | 5010 Node* dest_length = alloc->in(AllocateNode::ALength); |
4778 | 5011 if (copy_length->eqv_uncast(dest_length) |
0 | 5012 || _gvn.find_int_con(dest_length, 1) <= 0) { |
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5013 // There is no zeroing to do. No need for a secondary raw memory barrier. |
0 | 5014 } else { |
5015 // Clear the whole thing since there are no source elements to copy. | |
5016 generate_clear_array(adr_type, dest, basic_elem_type, | |
5017 intcon(0), NULL, | |
5018 alloc->in(AllocateNode::AllocSize)); | |
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5019 // Use a secondary InitializeNode as raw memory barrier. |
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5020 // Currently it is needed only on this path since other |
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5021 // paths have stub or runtime calls as raw memory barriers. |
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5022 InitializeNode* init = insert_mem_bar_volatile(Op_Initialize, |
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5023 Compile::AliasIdxRaw, |
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5024 top())->as_Initialize(); |
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5025 init->set_complete(&_gvn); // (there is no corresponding AllocateNode) |
0 | 5026 } |
5027 } | |
5028 | |
5029 // Present the results of the fast call. | |
5030 result_region->init_req(zero_path, control()); | |
5031 result_i_o ->init_req(zero_path, i_o()); | |
5032 result_memory->init_req(zero_path, memory(adr_type)); | |
5033 } | |
5034 | |
2324 | 5035 if (!stopped() && dest_uninitialized) { |
0 | 5036 // We have to initialize the *uncopied* part of the array to zero. |
5037 // The copy destination is the slice dest[off..off+len]. The other slices | |
5038 // are dest_head = dest[0..off] and dest_tail = dest[off+len..dest.length]. | |
5039 Node* dest_size = alloc->in(AllocateNode::AllocSize); | |
5040 Node* dest_length = alloc->in(AllocateNode::ALength); | |
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5041 Node* dest_tail = _gvn.transform( new(C) AddINode(dest_offset, |
0 | 5042 copy_length) ); |
5043 | |
5044 // If there is a head section that needs zeroing, do it now. | |
5045 if (find_int_con(dest_offset, -1) != 0) { | |
5046 generate_clear_array(adr_type, dest, basic_elem_type, | |
5047 intcon(0), dest_offset, | |
5048 NULL); | |
5049 } | |
5050 | |
5051 // Next, perform a dynamic check on the tail length. | |
5052 // It is often zero, and we can win big if we prove this. | |
5053 // There are two wins: Avoid generating the ClearArray | |
5054 // with its attendant messy index arithmetic, and upgrade | |
5055 // the copy to a more hardware-friendly word size of 64 bits. | |
5056 Node* tail_ctl = NULL; | |
4778 | 5057 if (!stopped() && !dest_tail->eqv_uncast(dest_length)) { |
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5058 Node* cmp_lt = _gvn.transform( new(C) CmpINode(dest_tail, dest_length) ); |
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5059 Node* bol_lt = _gvn.transform( new(C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 5060 tail_ctl = generate_slow_guard(bol_lt, NULL); |
5061 assert(tail_ctl != NULL || !stopped(), "must be an outcome"); | |
5062 } | |
5063 | |
5064 // At this point, let's assume there is no tail. | |
5065 if (!stopped() && alloc != NULL && basic_elem_type != T_OBJECT) { | |
5066 // There is no tail. Try an upgrade to a 64-bit copy. | |
5067 bool didit = false; | |
5068 { PreserveJVMState pjvms(this); | |
5069 didit = generate_block_arraycopy(adr_type, basic_elem_type, alloc, | |
5070 src, src_offset, dest, dest_offset, | |
2324 | 5071 dest_size, dest_uninitialized); |
0 | 5072 if (didit) { |
5073 // Present the results of the block-copying fast call. | |
5074 result_region->init_req(bcopy_path, control()); | |
5075 result_i_o ->init_req(bcopy_path, i_o()); | |
5076 result_memory->init_req(bcopy_path, memory(adr_type)); | |
5077 } | |
5078 } | |
5079 if (didit) | |
5080 set_control(top()); // no regular fast path | |
5081 } | |
5082 | |
5083 // Clear the tail, if any. | |
5084 if (tail_ctl != NULL) { | |
5085 Node* notail_ctl = stopped() ? NULL : control(); | |
5086 set_control(tail_ctl); | |
5087 if (notail_ctl == NULL) { | |
5088 generate_clear_array(adr_type, dest, basic_elem_type, | |
5089 dest_tail, NULL, | |
5090 dest_size); | |
5091 } else { | |
5092 // Make a local merge. | |
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5093 Node* done_ctl = new(C) RegionNode(3); |
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5094 Node* done_mem = new(C) PhiNode(done_ctl, Type::MEMORY, adr_type); |
0 | 5095 done_ctl->init_req(1, notail_ctl); |
5096 done_mem->init_req(1, memory(adr_type)); | |
5097 generate_clear_array(adr_type, dest, basic_elem_type, | |
5098 dest_tail, NULL, | |
5099 dest_size); | |
5100 done_ctl->init_req(2, control()); | |
5101 done_mem->init_req(2, memory(adr_type)); | |
5102 set_control( _gvn.transform(done_ctl) ); | |
5103 set_memory( _gvn.transform(done_mem), adr_type ); | |
5104 } | |
5105 } | |
5106 } | |
5107 | |
5108 BasicType copy_type = basic_elem_type; | |
5109 assert(basic_elem_type != T_ARRAY, "caller must fix this"); | |
5110 if (!stopped() && copy_type == T_OBJECT) { | |
5111 // If src and dest have compatible element types, we can copy bits. | |
5112 // Types S[] and D[] are compatible if D is a supertype of S. | |
5113 // | |
5114 // If they are not, we will use checked_oop_disjoint_arraycopy, | |
5115 // which performs a fast optimistic per-oop check, and backs off | |
5116 // further to JVM_ArrayCopy on the first per-oop check that fails. | |
5117 // (Actually, we don't move raw bits only; the GC requires card marks.) | |
5118 | |
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5119 // Get the Klass* for both src and dest |
0 | 5120 Node* src_klass = load_object_klass(src); |
5121 Node* dest_klass = load_object_klass(dest); | |
5122 | |
5123 // Generate the subtype check. | |
5124 // This might fold up statically, or then again it might not. | |
5125 // | |
5126 // Non-static example: Copying List<String>.elements to a new String[]. | |
5127 // The backing store for a List<String> is always an Object[], | |
5128 // but its elements are always type String, if the generic types | |
5129 // are correct at the source level. | |
5130 // | |
5131 // Test S[] against D[], not S against D, because (probably) | |
5132 // the secondary supertype cache is less busy for S[] than S. | |
5133 // This usually only matters when D is an interface. | |
5134 Node* not_subtype_ctrl = gen_subtype_check(src_klass, dest_klass); | |
5135 // Plug failing path into checked_oop_disjoint_arraycopy | |
5136 if (not_subtype_ctrl != top()) { | |
5137 PreserveJVMState pjvms(this); | |
5138 set_control(not_subtype_ctrl); | |
5139 // (At this point we can assume disjoint_bases, since types differ.) | |
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5140 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
0 | 5141 Node* p1 = basic_plus_adr(dest_klass, ek_offset); |
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5142 Node* n1 = LoadKlassNode::make(_gvn, immutable_memory(), p1, TypeRawPtr::BOTTOM); |
0 | 5143 Node* dest_elem_klass = _gvn.transform(n1); |
5144 Node* cv = generate_checkcast_arraycopy(adr_type, | |
5145 dest_elem_klass, | |
5146 src, src_offset, dest, dest_offset, | |
2324 | 5147 ConvI2X(copy_length), dest_uninitialized); |
0 | 5148 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
5149 checked_control = control(); | |
5150 checked_i_o = i_o(); | |
5151 checked_mem = memory(adr_type); | |
5152 checked_value = cv; | |
5153 } | |
5154 // At this point we know we do not need type checks on oop stores. | |
5155 | |
5156 // Let's see if we need card marks: | |
5157 if (alloc != NULL && use_ReduceInitialCardMarks()) { | |
5158 // If we do not need card marks, copy using the jint or jlong stub. | |
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5159 copy_type = LP64_ONLY(UseCompressedOops ? T_INT : T_LONG) NOT_LP64(T_INT); |
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|
5160 assert(type2aelembytes(basic_elem_type) == type2aelembytes(copy_type), |
0 | 5161 "sizes agree"); |
5162 } | |
5163 } | |
5164 | |
5165 if (!stopped()) { | |
5166 // Generate the fast path, if possible. | |
5167 PreserveJVMState pjvms(this); | |
5168 generate_unchecked_arraycopy(adr_type, copy_type, disjoint_bases, | |
5169 src, src_offset, dest, dest_offset, | |
2324 | 5170 ConvI2X(copy_length), dest_uninitialized); |
0 | 5171 |
5172 // Present the results of the fast call. | |
5173 result_region->init_req(fast_path, control()); | |
5174 result_i_o ->init_req(fast_path, i_o()); | |
5175 result_memory->init_req(fast_path, memory(adr_type)); | |
5176 } | |
5177 | |
5178 // Here are all the slow paths up to this point, in one bundle: | |
5179 slow_control = top(); | |
5180 if (slow_region != NULL) | |
5181 slow_control = _gvn.transform(slow_region); | |
5182 debug_only(slow_region = (RegionNode*)badAddress); | |
5183 | |
5184 set_control(checked_control); | |
5185 if (!stopped()) { | |
5186 // Clean up after the checked call. | |
5187 // The returned value is either 0 or -1^K, | |
5188 // where K = number of partially transferred array elements. | |
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|
5189 Node* cmp = _gvn.transform( new(C) CmpINode(checked_value, intcon(0)) ); |
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|
5190 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
0 | 5191 IfNode* iff = create_and_map_if(control(), bol, PROB_MAX, COUNT_UNKNOWN); |
5192 | |
5193 // If it is 0, we are done, so transfer to the end. | |
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5194 Node* checks_done = _gvn.transform( new(C) IfTrueNode(iff) ); |
0 | 5195 result_region->init_req(checked_path, checks_done); |
5196 result_i_o ->init_req(checked_path, checked_i_o); | |
5197 result_memory->init_req(checked_path, checked_mem); | |
5198 | |
5199 // If it is not zero, merge into the slow call. | |
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5200 set_control( _gvn.transform( new(C) IfFalseNode(iff) )); |
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5201 RegionNode* slow_reg2 = new(C) RegionNode(3); |
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5202 PhiNode* slow_i_o2 = new(C) PhiNode(slow_reg2, Type::ABIO); |
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5203 PhiNode* slow_mem2 = new(C) PhiNode(slow_reg2, Type::MEMORY, adr_type); |
0 | 5204 record_for_igvn(slow_reg2); |
5205 slow_reg2 ->init_req(1, slow_control); | |
5206 slow_i_o2 ->init_req(1, slow_i_o); | |
5207 slow_mem2 ->init_req(1, slow_mem); | |
5208 slow_reg2 ->init_req(2, control()); | |
833
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changeset
|
5209 slow_i_o2 ->init_req(2, checked_i_o); |
acba6af809c8
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changeset
|
5210 slow_mem2 ->init_req(2, checked_mem); |
0 | 5211 |
5212 slow_control = _gvn.transform(slow_reg2); | |
5213 slow_i_o = _gvn.transform(slow_i_o2); | |
5214 slow_mem = _gvn.transform(slow_mem2); | |
5215 | |
5216 if (alloc != NULL) { | |
5217 // We'll restart from the very beginning, after zeroing the whole thing. | |
5218 // This can cause double writes, but that's OK since dest is brand new. | |
5219 // So we ignore the low 31 bits of the value returned from the stub. | |
5220 } else { | |
5221 // We must continue the copy exactly where it failed, or else | |
5222 // another thread might see the wrong number of writes to dest. | |
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|
5223 Node* checked_offset = _gvn.transform( new(C) XorINode(checked_value, intcon(-1)) ); |
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|
5224 Node* slow_offset = new(C) PhiNode(slow_reg2, TypeInt::INT); |
0 | 5225 slow_offset->init_req(1, intcon(0)); |
5226 slow_offset->init_req(2, checked_offset); | |
5227 slow_offset = _gvn.transform(slow_offset); | |
5228 | |
5229 // Adjust the arguments by the conditionally incoming offset. | |
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|
5230 Node* src_off_plus = _gvn.transform( new(C) AddINode(src_offset, slow_offset) ); |
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|
5231 Node* dest_off_plus = _gvn.transform( new(C) AddINode(dest_offset, slow_offset) ); |
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|
5232 Node* length_minus = _gvn.transform( new(C) SubINode(copy_length, slow_offset) ); |
0 | 5233 |
5234 // Tweak the node variables to adjust the code produced below: | |
5235 src_offset = src_off_plus; | |
5236 dest_offset = dest_off_plus; | |
5237 copy_length = length_minus; | |
5238 } | |
5239 } | |
5240 | |
5241 set_control(slow_control); | |
5242 if (!stopped()) { | |
5243 // Generate the slow path, if needed. | |
5244 PreserveJVMState pjvms(this); // replace_in_map may trash the map | |
5245 | |
5246 set_memory(slow_mem, adr_type); | |
5247 set_i_o(slow_i_o); | |
5248 | |
2324 | 5249 if (dest_uninitialized) { |
0 | 5250 generate_clear_array(adr_type, dest, basic_elem_type, |
5251 intcon(0), NULL, | |
5252 alloc->in(AllocateNode::AllocSize)); | |
5253 } | |
5254 | |
5255 generate_slow_arraycopy(adr_type, | |
5256 src, src_offset, dest, dest_offset, | |
2324 | 5257 copy_length, /*dest_uninitialized*/false); |
0 | 5258 |
5259 result_region->init_req(slow_call_path, control()); | |
5260 result_i_o ->init_req(slow_call_path, i_o()); | |
5261 result_memory->init_req(slow_call_path, memory(adr_type)); | |
5262 } | |
5263 | |
5264 // Remove unused edges. | |
5265 for (uint i = 1; i < result_region->req(); i++) { | |
5266 if (result_region->in(i) == NULL) | |
5267 result_region->init_req(i, top()); | |
5268 } | |
5269 | |
5270 // Finished; return the combined state. | |
5271 set_control( _gvn.transform(result_region) ); | |
5272 set_i_o( _gvn.transform(result_i_o) ); | |
5273 set_memory( _gvn.transform(result_memory), adr_type ); | |
5274 | |
5275 // The memory edges above are precise in order to model effects around | |
605 | 5276 // array copies accurately to allow value numbering of field loads around |
0 | 5277 // arraycopy. Such field loads, both before and after, are common in Java |
5278 // collections and similar classes involving header/array data structures. | |
5279 // | |
5280 // But with low number of register or when some registers are used or killed | |
5281 // by arraycopy calls it causes registers spilling on stack. See 6544710. | |
5282 // The next memory barrier is added to avoid it. If the arraycopy can be | |
5283 // optimized away (which it can, sometimes) then we can manually remove | |
5284 // the membar also. | |
958
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diff
changeset
|
5285 // |
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
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950
diff
changeset
|
5286 // Do not let reads from the cloned object float above the arraycopy. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
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4762
diff
changeset
|
5287 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
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diff
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|
5288 // Do not let stores that initialize this object be reordered with |
1dc233a8c7fe
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diff
changeset
|
5289 // a subsequent store that would make this object accessible by |
1dc233a8c7fe
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diff
changeset
|
5290 // other threads. |
1dc233a8c7fe
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|
5291 // Record what AllocateNode this StoreStore protects so that |
1dc233a8c7fe
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diff
changeset
|
5292 // escape analysis can go from the MemBarStoreStoreNode to the |
1dc233a8c7fe
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changeset
|
5293 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
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|
5294 // based on the escape status of the AllocateNode. |
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|
5295 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress)); |
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|
5296 } else if (InsertMemBarAfterArraycopy) |
0 | 5297 insert_mem_bar(Op_MemBarCPUOrder); |
5298 } | |
5299 | |
5300 | |
5301 // Helper function which determines if an arraycopy immediately follows | |
5302 // an allocation, with no intervening tests or other escapes for the object. | |
5303 AllocateArrayNode* | |
5304 LibraryCallKit::tightly_coupled_allocation(Node* ptr, | |
5305 RegionNode* slow_region) { | |
5306 if (stopped()) return NULL; // no fast path | |
5307 if (C->AliasLevel() == 0) return NULL; // no MergeMems around | |
5308 | |
5309 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr, &_gvn); | |
5310 if (alloc == NULL) return NULL; | |
5311 | |
5312 Node* rawmem = memory(Compile::AliasIdxRaw); | |
5313 // Is the allocation's memory state untouched? | |
5314 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) { | |
5315 // Bail out if there have been raw-memory effects since the allocation. | |
5316 // (Example: There might have been a call or safepoint.) | |
5317 return NULL; | |
5318 } | |
5319 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw); | |
5320 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) { | |
5321 return NULL; | |
5322 } | |
5323 | |
5324 // There must be no unexpected observers of this allocation. | |
5325 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) { | |
5326 Node* obs = ptr->fast_out(i); | |
5327 if (obs != this->map()) { | |
5328 return NULL; | |
5329 } | |
5330 } | |
5331 | |
5332 // This arraycopy must unconditionally follow the allocation of the ptr. | |
5333 Node* alloc_ctl = ptr->in(0); | |
5334 assert(just_allocated_object(alloc_ctl) == ptr, "most recent allo"); | |
5335 | |
5336 Node* ctl = control(); | |
5337 while (ctl != alloc_ctl) { | |
5338 // There may be guards which feed into the slow_region. | |
5339 // Any other control flow means that we might not get a chance | |
5340 // to finish initializing the allocated object. | |
5341 if ((ctl->is_IfFalse() || ctl->is_IfTrue()) && ctl->in(0)->is_If()) { | |
5342 IfNode* iff = ctl->in(0)->as_If(); | |
5343 Node* not_ctl = iff->proj_out(1 - ctl->as_Proj()->_con); | |
5344 assert(not_ctl != NULL && not_ctl != ctl, "found alternate"); | |
5345 if (slow_region != NULL && slow_region->find_edge(not_ctl) >= 1) { | |
5346 ctl = iff->in(0); // This test feeds the known slow_region. | |
5347 continue; | |
5348 } | |
5349 // One more try: Various low-level checks bottom out in | |
5350 // uncommon traps. If the debug-info of the trap omits | |
5351 // any reference to the allocation, as we've already | |
5352 // observed, then there can be no objection to the trap. | |
5353 bool found_trap = false; | |
5354 for (DUIterator_Fast jmax, j = not_ctl->fast_outs(jmax); j < jmax; j++) { | |
5355 Node* obs = not_ctl->fast_out(j); | |
5356 if (obs->in(0) == not_ctl && obs->is_Call() && | |
1748 | 5357 (obs->as_Call()->entry_point() == SharedRuntime::uncommon_trap_blob()->entry_point())) { |
0 | 5358 found_trap = true; break; |
5359 } | |
5360 } | |
5361 if (found_trap) { | |
5362 ctl = iff->in(0); // This test feeds a harmless uncommon trap. | |
5363 continue; | |
5364 } | |
5365 } | |
5366 return NULL; | |
5367 } | |
5368 | |
5369 // If we get this far, we have an allocation which immediately | |
5370 // precedes the arraycopy, and we can take over zeroing the new object. | |
5371 // The arraycopy will finish the initialization, and provide | |
5372 // a new control state to which we will anchor the destination pointer. | |
5373 | |
5374 return alloc; | |
5375 } | |
5376 | |
5377 // Helper for initialization of arrays, creating a ClearArray. | |
5378 // It writes zero bits in [start..end), within the body of an array object. | |
5379 // The memory effects are all chained onto the 'adr_type' alias category. | |
5380 // | |
5381 // Since the object is otherwise uninitialized, we are free | |
5382 // to put a little "slop" around the edges of the cleared area, | |
5383 // as long as it does not go back into the array's header, | |
5384 // or beyond the array end within the heap. | |
5385 // | |
5386 // The lower edge can be rounded down to the nearest jint and the | |
5387 // upper edge can be rounded up to the nearest MinObjAlignmentInBytes. | |
5388 // | |
5389 // Arguments: | |
5390 // adr_type memory slice where writes are generated | |
5391 // dest oop of the destination array | |
5392 // basic_elem_type element type of the destination | |
5393 // slice_idx array index of first element to store | |
5394 // slice_len number of elements to store (or NULL) | |
5395 // dest_size total size in bytes of the array object | |
5396 // | |
5397 // Exactly one of slice_len or dest_size must be non-NULL. | |
5398 // If dest_size is non-NULL, zeroing extends to the end of the object. | |
5399 // If slice_len is non-NULL, the slice_idx value must be a constant. | |
5400 void | |
5401 LibraryCallKit::generate_clear_array(const TypePtr* adr_type, | |
5402 Node* dest, | |
5403 BasicType basic_elem_type, | |
5404 Node* slice_idx, | |
5405 Node* slice_len, | |
5406 Node* dest_size) { | |
5407 // one or the other but not both of slice_len and dest_size: | |
5408 assert((slice_len != NULL? 1: 0) + (dest_size != NULL? 1: 0) == 1, ""); | |
5409 if (slice_len == NULL) slice_len = top(); | |
5410 if (dest_size == NULL) dest_size = top(); | |
5411 | |
5412 // operate on this memory slice: | |
5413 Node* mem = memory(adr_type); // memory slice to operate on | |
5414 | |
5415 // scaling and rounding of indexes: | |
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5416 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5417 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); |
5418 int clear_low = (-1 << scale) & (BytesPerInt - 1); | |
5419 int bump_bit = (-1 << scale) & BytesPerInt; | |
5420 | |
5421 // determine constant starts and ends | |
5422 const intptr_t BIG_NEG = -128; | |
5423 assert(BIG_NEG + 2*abase < 0, "neg enough"); | |
5424 intptr_t slice_idx_con = (intptr_t) find_int_con(slice_idx, BIG_NEG); | |
5425 intptr_t slice_len_con = (intptr_t) find_int_con(slice_len, BIG_NEG); | |
5426 if (slice_len_con == 0) { | |
5427 return; // nothing to do here | |
5428 } | |
5429 intptr_t start_con = (abase + (slice_idx_con << scale)) & ~clear_low; | |
5430 intptr_t end_con = find_intptr_t_con(dest_size, -1); | |
5431 if (slice_idx_con >= 0 && slice_len_con >= 0) { | |
5432 assert(end_con < 0, "not two cons"); | |
5433 end_con = round_to(abase + ((slice_idx_con + slice_len_con) << scale), | |
5434 BytesPerLong); | |
5435 } | |
5436 | |
5437 if (start_con >= 0 && end_con >= 0) { | |
5438 // Constant start and end. Simple. | |
5439 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5440 start_con, end_con, &_gvn); | |
5441 } else if (start_con >= 0 && dest_size != top()) { | |
5442 // Constant start, pre-rounded end after the tail of the array. | |
5443 Node* end = dest_size; | |
5444 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5445 start_con, end, &_gvn); | |
5446 } else if (start_con >= 0 && slice_len != top()) { | |
5447 // Constant start, non-constant end. End needs rounding up. | |
5448 // End offset = round_up(abase + ((slice_idx_con + slice_len) << scale), 8) | |
5449 intptr_t end_base = abase + (slice_idx_con << scale); | |
5450 int end_round = (-1 << scale) & (BytesPerLong - 1); | |
5451 Node* end = ConvI2X(slice_len); | |
5452 if (scale != 0) | |
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diff
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5453 end = _gvn.transform( new(C) LShiftXNode(end, intcon(scale) )); |
0 | 5454 end_base += end_round; |
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|
5455 end = _gvn.transform( new(C) AddXNode(end, MakeConX(end_base)) ); |
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|
5456 end = _gvn.transform( new(C) AndXNode(end, MakeConX(~end_round)) ); |
0 | 5457 mem = ClearArrayNode::clear_memory(control(), mem, dest, |
5458 start_con, end, &_gvn); | |
5459 } else if (start_con < 0 && dest_size != top()) { | |
5460 // Non-constant start, pre-rounded end after the tail of the array. | |
5461 // This is almost certainly a "round-to-end" operation. | |
5462 Node* start = slice_idx; | |
5463 start = ConvI2X(start); | |
5464 if (scale != 0) | |
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|
5465 start = _gvn.transform( new(C) LShiftXNode( start, intcon(scale) )); |
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|
5466 start = _gvn.transform( new(C) AddXNode(start, MakeConX(abase)) ); |
0 | 5467 if ((bump_bit | clear_low) != 0) { |
5468 int to_clear = (bump_bit | clear_low); | |
5469 // Align up mod 8, then store a jint zero unconditionally | |
5470 // just before the mod-8 boundary. | |
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|
5471 if (((abase + bump_bit) & ~to_clear) - bump_bit |
ba764ed4b6f2
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coleenp
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34
diff
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5472 < arrayOopDesc::length_offset_in_bytes() + BytesPerInt) { |
ba764ed4b6f2
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34
diff
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5473 bump_bit = 0; |
ba764ed4b6f2
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coleenp
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34
diff
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|
5474 assert((abase & to_clear) == 0, "array base must be long-aligned"); |
ba764ed4b6f2
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coleenp
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34
diff
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|
5475 } else { |
ba764ed4b6f2
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34
diff
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|
5476 // Bump 'start' up to (or past) the next jint boundary: |
6804
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|
5477 start = _gvn.transform( new(C) AddXNode(start, MakeConX(bump_bit)) ); |
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diff
changeset
|
5478 assert((abase & clear_low) == 0, "array base must be int-aligned"); |
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|
5479 } |
0 | 5480 // Round bumped 'start' down to jlong boundary in body of array. |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
5481 start = _gvn.transform( new(C) AndXNode(start, MakeConX(~to_clear)) ); |
113
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diff
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|
5482 if (bump_bit != 0) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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34
diff
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|
5483 // Store a zero to the immediately preceding jint: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
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6795
diff
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|
5484 Node* x1 = _gvn.transform( new(C) AddXNode(start, MakeConX(-bump_bit)) ); |
113
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|
5485 Node* p1 = basic_plus_adr(dest, x1); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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34
diff
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|
5486 mem = StoreNode::make(_gvn, control(), mem, p1, adr_type, intcon(0), T_INT); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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|
5487 mem = _gvn.transform(mem); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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|
5488 } |
0 | 5489 } |
5490 Node* end = dest_size; // pre-rounded | |
5491 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5492 start, end, &_gvn); | |
5493 } else { | |
5494 // Non-constant start, unrounded non-constant end. | |
5495 // (Nobody zeroes a random midsection of an array using this routine.) | |
5496 ShouldNotReachHere(); // fix caller | |
5497 } | |
5498 | |
5499 // Done. | |
5500 set_memory(mem, adr_type); | |
5501 } | |
5502 | |
5503 | |
5504 bool | |
5505 LibraryCallKit::generate_block_arraycopy(const TypePtr* adr_type, | |
5506 BasicType basic_elem_type, | |
5507 AllocateNode* alloc, | |
5508 Node* src, Node* src_offset, | |
5509 Node* dest, Node* dest_offset, | |
2324 | 5510 Node* dest_size, bool dest_uninitialized) { |
0 | 5511 // See if there is an advantage from block transfer. |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
5512 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5513 if (scale >= LogBytesPerLong) |
5514 return false; // it is already a block transfer | |
5515 | |
5516 // Look at the alignment of the starting offsets. | |
5517 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); | |
3742
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
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3337
diff
changeset
|
5518 |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
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parents:
3337
diff
changeset
|
5519 intptr_t src_off_con = (intptr_t) find_int_con(src_offset, -1); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5520 intptr_t dest_off_con = (intptr_t) find_int_con(dest_offset, -1); |
b2cb497dec28
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kvn
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diff
changeset
|
5521 if (src_off_con < 0 || dest_off_con < 0) |
0 | 5522 // At present, we can only understand constants. |
5523 return false; | |
5524 | |
3742
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kvn
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3337
diff
changeset
|
5525 intptr_t src_off = abase + (src_off_con << scale); |
b2cb497dec28
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kvn
parents:
3337
diff
changeset
|
5526 intptr_t dest_off = abase + (dest_off_con << scale); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
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3337
diff
changeset
|
5527 |
0 | 5528 if (((src_off | dest_off) & (BytesPerLong-1)) != 0) { |
5529 // Non-aligned; too bad. | |
5530 // One more chance: Pick off an initial 32-bit word. | |
5531 // This is a common case, since abase can be odd mod 8. | |
5532 if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt && | |
5533 ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) { | |
5534 Node* sptr = basic_plus_adr(src, src_off); | |
5535 Node* dptr = basic_plus_adr(dest, dest_off); | |
5536 Node* sval = make_load(control(), sptr, TypeInt::INT, T_INT, adr_type); | |
5537 store_to_memory(control(), dptr, sval, T_INT, adr_type); | |
5538 src_off += BytesPerInt; | |
5539 dest_off += BytesPerInt; | |
5540 } else { | |
5541 return false; | |
5542 } | |
5543 } | |
5544 assert(src_off % BytesPerLong == 0, ""); | |
5545 assert(dest_off % BytesPerLong == 0, ""); | |
5546 | |
5547 // Do this copy by giant steps. | |
5548 Node* sptr = basic_plus_adr(src, src_off); | |
5549 Node* dptr = basic_plus_adr(dest, dest_off); | |
5550 Node* countx = dest_size; | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
5551 countx = _gvn.transform( new (C) SubXNode(countx, MakeConX(dest_off)) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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diff
changeset
|
5552 countx = _gvn.transform( new (C) URShiftXNode(countx, intcon(LogBytesPerLong)) ); |
0 | 5553 |
5554 bool disjoint_bases = true; // since alloc != NULL | |
5555 generate_unchecked_arraycopy(adr_type, T_LONG, disjoint_bases, | |
2324 | 5556 sptr, NULL, dptr, NULL, countx, dest_uninitialized); |
0 | 5557 |
5558 return true; | |
5559 } | |
5560 | |
5561 | |
5562 // Helper function; generates code for the slow case. | |
5563 // We make a call to a runtime method which emulates the native method, | |
5564 // but without the native wrapper overhead. | |
5565 void | |
5566 LibraryCallKit::generate_slow_arraycopy(const TypePtr* adr_type, | |
5567 Node* src, Node* src_offset, | |
5568 Node* dest, Node* dest_offset, | |
2324 | 5569 Node* copy_length, bool dest_uninitialized) { |
5570 assert(!dest_uninitialized, "Invariant"); | |
0 | 5571 Node* call = make_runtime_call(RC_NO_LEAF | RC_UNCOMMON, |
5572 OptoRuntime::slow_arraycopy_Type(), | |
5573 OptoRuntime::slow_arraycopy_Java(), | |
5574 "slow_arraycopy", adr_type, | |
5575 src, src_offset, dest, dest_offset, | |
5576 copy_length); | |
5577 | |
5578 // Handle exceptions thrown by this fellow: | |
5579 make_slow_call_ex(call, env()->Throwable_klass(), false); | |
5580 } | |
5581 | |
5582 // Helper function; generates code for cases requiring runtime checks. | |
5583 Node* | |
5584 LibraryCallKit::generate_checkcast_arraycopy(const TypePtr* adr_type, | |
5585 Node* dest_elem_klass, | |
5586 Node* src, Node* src_offset, | |
5587 Node* dest, Node* dest_offset, | |
2324 | 5588 Node* copy_length, bool dest_uninitialized) { |
0 | 5589 if (stopped()) return NULL; |
5590 | |
2324 | 5591 address copyfunc_addr = StubRoutines::checkcast_arraycopy(dest_uninitialized); |
0 | 5592 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. |
5593 return NULL; | |
5594 } | |
5595 | |
5596 // Pick out the parameters required to perform a store-check | |
5597 // for the target array. This is an optimistic check. It will | |
5598 // look in each non-null element's class, at the desired klass's | |
5599 // super_check_offset, for the desired klass. | |
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
parents:
3961
diff
changeset
|
5600 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 5601 Node* p3 = basic_plus_adr(dest_elem_klass, sco_offset); |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
5602 Node* n3 = new(C) LoadINode(NULL, memory(p3), p3, _gvn.type(p3)->is_ptr()); |
1844
75588558f1bf
6980792: Crash "exception happened outside interpreter, nmethods and vtable stubs (1)"
never
parents:
1748
diff
changeset
|
5603 Node* check_offset = ConvI2X(_gvn.transform(n3)); |
0 | 5604 Node* check_value = dest_elem_klass; |
5605 | |
5606 Node* src_start = array_element_address(src, src_offset, T_OBJECT); | |
5607 Node* dest_start = array_element_address(dest, dest_offset, T_OBJECT); | |
5608 | |
5609 // (We know the arrays are never conjoint, because their types differ.) | |
5610 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5611 OptoRuntime::checkcast_arraycopy_Type(), | |
5612 copyfunc_addr, "checkcast_arraycopy", adr_type, | |
5613 // five arguments, of which two are | |
5614 // intptr_t (jlong in LP64) | |
5615 src_start, dest_start, | |
5616 copy_length XTOP, | |
5617 check_offset XTOP, | |
5618 check_value); | |
5619 | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
5620 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5621 } |
5622 | |
5623 | |
5624 // Helper function; generates code for cases requiring runtime checks. | |
5625 Node* | |
5626 LibraryCallKit::generate_generic_arraycopy(const TypePtr* adr_type, | |
5627 Node* src, Node* src_offset, | |
5628 Node* dest, Node* dest_offset, | |
2324 | 5629 Node* copy_length, bool dest_uninitialized) { |
5630 assert(!dest_uninitialized, "Invariant"); | |
0 | 5631 if (stopped()) return NULL; |
5632 address copyfunc_addr = StubRoutines::generic_arraycopy(); | |
5633 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. | |
5634 return NULL; | |
5635 } | |
5636 | |
5637 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5638 OptoRuntime::generic_arraycopy_Type(), | |
5639 copyfunc_addr, "generic_arraycopy", adr_type, | |
5640 src, src_offset, dest, dest_offset, copy_length); | |
5641 | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
5642 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5643 } |
5644 | |
5645 // Helper function; generates the fast out-of-line call to an arraycopy stub. | |
5646 void | |
5647 LibraryCallKit::generate_unchecked_arraycopy(const TypePtr* adr_type, | |
5648 BasicType basic_elem_type, | |
5649 bool disjoint_bases, | |
5650 Node* src, Node* src_offset, | |
5651 Node* dest, Node* dest_offset, | |
2324 | 5652 Node* copy_length, bool dest_uninitialized) { |
0 | 5653 if (stopped()) return; // nothing to do |
5654 | |
5655 Node* src_start = src; | |
5656 Node* dest_start = dest; | |
5657 if (src_offset != NULL || dest_offset != NULL) { | |
5658 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5659 src_start = array_element_address(src, src_offset, basic_elem_type); | |
5660 dest_start = array_element_address(dest, dest_offset, basic_elem_type); | |
5661 } | |
5662 | |
5663 // Figure out which arraycopy runtime method to call. | |
5664 const char* copyfunc_name = "arraycopy"; | |
5665 address copyfunc_addr = | |
5666 basictype2arraycopy(basic_elem_type, src_offset, dest_offset, | |
2324 | 5667 disjoint_bases, copyfunc_name, dest_uninitialized); |
0 | 5668 |
5669 // Call it. Note that the count_ix value is not scaled to a byte-size. | |
5670 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5671 OptoRuntime::fast_arraycopy_Type(), | |
5672 copyfunc_addr, copyfunc_name, adr_type, | |
5673 src_start, dest_start, copy_length XTOP); | |
5674 } | |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5675 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5676 //----------------------------inline_reference_get---------------------------- |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5677 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5678 bool LibraryCallKit::inline_reference_get() { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5679 const int nargs = 1; // self |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5680 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5681 guarantee(java_lang_ref_Reference::referent_offset > 0, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5682 "should have already been set"); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5683 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5684 int referent_offset = java_lang_ref_Reference::referent_offset; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5685 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5686 // Restore the stack and pop off the argument |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5687 _sp += nargs; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5688 Node *reference_obj = pop(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5689 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5690 // Null check on self without removing any arguments. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5691 _sp += nargs; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5692 reference_obj = do_null_check(reference_obj, T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5693 _sp -= nargs;; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5694 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5695 if (stopped()) return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5696 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5697 Node *adr = basic_plus_adr(reference_obj, reference_obj, referent_offset); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5698 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5699 ciInstanceKlass* klass = env()->Object_klass(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5700 const TypeOopPtr* object_type = TypeOopPtr::make_from_klass(klass); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5701 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5702 Node* no_ctrl = NULL; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5703 Node *result = make_load(no_ctrl, adr, object_type, T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5704 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5705 // Use the pre-barrier to record the value in the referent field |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5706 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5707 control(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
parents:
3255
diff
changeset
|
5708 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5709 result /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5710 T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5711 |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5712 // Add memory barrier to prevent commoning reads from this field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5713 // across safepoint since GC can change its value. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5714 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5715 |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
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|
5716 push(result); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5717 return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5718 } |
6894 | 5719 |
5720 | |
5721 Node * LibraryCallKit::load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, | |
5722 bool is_exact=true, bool is_static=false) { | |
5723 | |
5724 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr(); | |
5725 assert(tinst != NULL, "obj is null"); | |
5726 assert(tinst->klass()->is_loaded(), "obj is not loaded"); | |
5727 assert(!is_exact || tinst->klass_is_exact(), "klass not exact"); | |
5728 | |
5729 ciField* field = tinst->klass()->as_instance_klass()->get_field_by_name(ciSymbol::make(fieldName), | |
5730 ciSymbol::make(fieldTypeString), | |
5731 is_static); | |
5732 if (field == NULL) return (Node *) NULL; | |
5733 assert (field != NULL, "undefined field"); | |
5734 | |
5735 // Next code copied from Parse::do_get_xxx(): | |
5736 | |
5737 // Compute address and memory type. | |
5738 int offset = field->offset_in_bytes(); | |
5739 bool is_vol = field->is_volatile(); | |
5740 ciType* field_klass = field->type(); | |
5741 assert(field_klass->is_loaded(), "should be loaded"); | |
5742 const TypePtr* adr_type = C->alias_type(field)->adr_type(); | |
5743 Node *adr = basic_plus_adr(fromObj, fromObj, offset); | |
5744 BasicType bt = field->layout_type(); | |
5745 | |
5746 // Build the resultant type of the load | |
5747 const Type *type = TypeOopPtr::make_from_klass(field_klass->as_klass()); | |
5748 | |
5749 // Build the load. | |
5750 Node* loadedField = make_load(NULL, adr, type, bt, adr_type, is_vol); | |
5751 return loadedField; | |
5752 } | |
5753 | |
5754 | |
5755 //------------------------------inline_aescrypt_Block----------------------- | |
5756 bool LibraryCallKit::inline_aescrypt_Block(vmIntrinsics::ID id) { | |
5757 address stubAddr; | |
5758 const char *stubName; | |
5759 assert(UseAES, "need AES instruction support"); | |
5760 | |
5761 switch(id) { | |
5762 case vmIntrinsics::_aescrypt_encryptBlock: | |
5763 stubAddr = StubRoutines::aescrypt_encryptBlock(); | |
5764 stubName = "aescrypt_encryptBlock"; | |
5765 break; | |
5766 case vmIntrinsics::_aescrypt_decryptBlock: | |
5767 stubAddr = StubRoutines::aescrypt_decryptBlock(); | |
5768 stubName = "aescrypt_decryptBlock"; | |
5769 break; | |
5770 } | |
5771 if (stubAddr == NULL) return false; | |
5772 | |
5773 // Restore the stack and pop off the arguments. | |
5774 int nargs = 5; // this + 2 oop/offset combos | |
5775 assert(callee()->signature()->size() == nargs-1, "encryptBlock has 4 arguments"); | |
5776 | |
5777 Node *aescrypt_object = argument(0); | |
5778 Node *src = argument(1); | |
5779 Node *src_offset = argument(2); | |
5780 Node *dest = argument(3); | |
5781 Node *dest_offset = argument(4); | |
5782 | |
5783 // (1) src and dest are arrays. | |
5784 const Type* src_type = src->Value(&_gvn); | |
5785 const Type* dest_type = dest->Value(&_gvn); | |
5786 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5787 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5788 assert (top_src != NULL && top_src->klass() != NULL && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5789 | |
5790 // for the quick and dirty code we will skip all the checks. | |
5791 // we are just trying to get the call to be generated. | |
5792 Node* src_start = src; | |
5793 Node* dest_start = dest; | |
5794 if (src_offset != NULL || dest_offset != NULL) { | |
5795 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5796 src_start = array_element_address(src, src_offset, T_BYTE); | |
5797 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5798 } | |
5799 | |
5800 // now need to get the start of its expanded key array | |
5801 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5802 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5803 if (k_start == NULL) return false; | |
5804 | |
5805 // Call the stub. | |
5806 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), | |
5807 stubAddr, stubName, TypePtr::BOTTOM, | |
5808 src_start, dest_start, k_start); | |
5809 | |
5810 return true; | |
5811 } | |
5812 | |
5813 //------------------------------inline_cipherBlockChaining_AESCrypt----------------------- | |
5814 bool LibraryCallKit::inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id) { | |
5815 address stubAddr; | |
5816 const char *stubName; | |
5817 | |
5818 assert(UseAES, "need AES instruction support"); | |
5819 | |
5820 switch(id) { | |
5821 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
5822 stubAddr = StubRoutines::cipherBlockChaining_encryptAESCrypt(); | |
5823 stubName = "cipherBlockChaining_encryptAESCrypt"; | |
5824 break; | |
5825 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
5826 stubAddr = StubRoutines::cipherBlockChaining_decryptAESCrypt(); | |
5827 stubName = "cipherBlockChaining_decryptAESCrypt"; | |
5828 break; | |
5829 } | |
5830 if (stubAddr == NULL) return false; | |
5831 | |
5832 | |
5833 // Restore the stack and pop off the arguments. | |
5834 int nargs = 6; // this + oop/offset + len + oop/offset | |
5835 assert(callee()->signature()->size() == nargs-1, "wrong number of arguments"); | |
5836 Node *cipherBlockChaining_object = argument(0); | |
5837 Node *src = argument(1); | |
5838 Node *src_offset = argument(2); | |
5839 Node *len = argument(3); | |
5840 Node *dest = argument(4); | |
5841 Node *dest_offset = argument(5); | |
5842 | |
5843 // (1) src and dest are arrays. | |
5844 const Type* src_type = src->Value(&_gvn); | |
5845 const Type* dest_type = dest->Value(&_gvn); | |
5846 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5847 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5848 assert (top_src != NULL && top_src->klass() != NULL | |
5849 && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5850 | |
5851 // checks are the responsibility of the caller | |
5852 Node* src_start = src; | |
5853 Node* dest_start = dest; | |
5854 if (src_offset != NULL || dest_offset != NULL) { | |
5855 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5856 src_start = array_element_address(src, src_offset, T_BYTE); | |
5857 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5858 } | |
5859 | |
5860 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object | |
5861 // (because of the predicated logic executed earlier). | |
5862 // so we cast it here safely. | |
5863 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5864 | |
5865 Node* embeddedCipherObj = load_field_from_object(cipherBlockChaining_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5866 if (embeddedCipherObj == NULL) return false; | |
5867 | |
5868 // cast it to what we know it will be at runtime | |
5869 const TypeInstPtr* tinst = _gvn.type(cipherBlockChaining_object)->isa_instptr(); | |
5870 assert(tinst != NULL, "CBC obj is null"); | |
5871 assert(tinst->klass()->is_loaded(), "CBC obj is not loaded"); | |
5872 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5873 if (!klass_AESCrypt->is_loaded()) return false; | |
5874 | |
5875 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5876 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); | |
5877 const TypeOopPtr* xtype = aklass->as_instance_type(); | |
5878 Node* aescrypt_object = new(C) CheckCastPPNode(control(), embeddedCipherObj, xtype); | |
5879 aescrypt_object = _gvn.transform(aescrypt_object); | |
5880 | |
5881 // we need to get the start of the aescrypt_object's expanded key array | |
5882 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5883 if (k_start == NULL) return false; | |
5884 | |
5885 // similarly, get the start address of the r vector | |
5886 Node* objRvec = load_field_from_object(cipherBlockChaining_object, "r", "[B", /*is_exact*/ false); | |
5887 if (objRvec == NULL) return false; | |
5888 Node* r_start = array_element_address(objRvec, intcon(0), T_BYTE); | |
5889 | |
5890 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len | |
5891 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5892 OptoRuntime::cipherBlockChaining_aescrypt_Type(), | |
5893 stubAddr, stubName, TypePtr::BOTTOM, | |
5894 src_start, dest_start, k_start, r_start, len); | |
5895 | |
5896 // return is void so no result needs to be pushed | |
5897 | |
5898 return true; | |
5899 } | |
5900 | |
5901 //------------------------------get_key_start_from_aescrypt_object----------------------- | |
5902 Node * LibraryCallKit::get_key_start_from_aescrypt_object(Node *aescrypt_object) { | |
5903 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "K", "[I", /*is_exact*/ false); | |
5904 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); | |
5905 if (objAESCryptKey == NULL) return (Node *) NULL; | |
5906 | |
5907 // now have the array, need to get the start address of the K array | |
5908 Node* k_start = array_element_address(objAESCryptKey, intcon(0), T_INT); | |
5909 return k_start; | |
5910 } | |
5911 | |
5912 //----------------------------inline_cipherBlockChaining_AESCrypt_predicate---------------------------- | |
5913 // Return node representing slow path of predicate check. | |
5914 // the pseudo code we want to emulate with this predicate is: | |
5915 // for encryption: | |
5916 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath | |
5917 // for decryption: | |
5918 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath | |
5919 // note cipher==plain is more conservative than the original java code but that's OK | |
5920 // | |
5921 Node* LibraryCallKit::inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting) { | |
5922 // First, check receiver for NULL since it is virtual method. | |
5923 int nargs = arg_size(); | |
5924 Node* objCBC = argument(0); | |
5925 _sp += nargs; | |
5926 objCBC = do_null_check(objCBC, T_OBJECT); | |
5927 _sp -= nargs; | |
5928 | |
5929 if (stopped()) return NULL; // Always NULL | |
5930 | |
5931 // Load embeddedCipher field of CipherBlockChaining object. | |
5932 Node* embeddedCipherObj = load_field_from_object(objCBC, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5933 | |
5934 // get AESCrypt klass for instanceOf check | |
5935 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point | |
5936 // will have same classloader as CipherBlockChaining object | |
5937 const TypeInstPtr* tinst = _gvn.type(objCBC)->isa_instptr(); | |
5938 assert(tinst != NULL, "CBCobj is null"); | |
5939 assert(tinst->klass()->is_loaded(), "CBCobj is not loaded"); | |
5940 | |
5941 // we want to do an instanceof comparison against the AESCrypt class | |
5942 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5943 if (!klass_AESCrypt->is_loaded()) { | |
5944 // if AESCrypt is not even loaded, we never take the intrinsic fast path | |
5945 Node* ctrl = control(); | |
5946 set_control(top()); // no regular fast path | |
5947 return ctrl; | |
5948 } | |
5949 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5950 | |
5951 _sp += nargs; // gen_instanceof might do an uncommon trap | |
5952 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); | |
5953 _sp -= nargs; | |
5954 Node* cmp_instof = _gvn.transform(new (C) CmpINode(instof, intcon(1))); | |
5955 Node* bool_instof = _gvn.transform(new (C) BoolNode(cmp_instof, BoolTest::ne)); | |
5956 | |
5957 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); | |
5958 | |
5959 // for encryption, we are done | |
5960 if (!decrypting) | |
5961 return instof_false; // even if it is NULL | |
5962 | |
5963 // for decryption, we need to add a further check to avoid | |
5964 // taking the intrinsic path when cipher and plain are the same | |
5965 // see the original java code for why. | |
5966 RegionNode* region = new(C) RegionNode(3); | |
5967 region->init_req(1, instof_false); | |
5968 Node* src = argument(1); | |
5969 Node *dest = argument(4); | |
5970 Node* cmp_src_dest = _gvn.transform(new (C) CmpPNode(src, dest)); | |
5971 Node* bool_src_dest = _gvn.transform(new (C) BoolNode(cmp_src_dest, BoolTest::eq)); | |
5972 Node* src_dest_conjoint = generate_guard(bool_src_dest, NULL, PROB_MIN); | |
5973 region->init_req(2, src_dest_conjoint); | |
5974 | |
5975 record_for_igvn(region); | |
5976 return _gvn.transform(region); | |
5977 | |
5978 } | |
5979 | |
5980 |