Mercurial > hg > graal-compiler
annotate src/share/vm/opto/library_call.cpp @ 6853:d804e148cff8
Merge
author | kvn |
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date | Fri, 12 Oct 2012 09:22:52 -0700 |
parents | d8ce2825b193 8e47bac5643a |
children | cfe522e6461c |
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; | |
47 vmIntrinsics::ID _intrinsic_id; | |
48 | |
49 public: | |
50 LibraryIntrinsic(ciMethod* m, bool is_virtual, vmIntrinsics::ID id) | |
51 : InlineCallGenerator(m), | |
52 _is_virtual(is_virtual), | |
53 _intrinsic_id(id) | |
54 { | |
55 } | |
56 virtual bool is_intrinsic() const { return true; } | |
57 virtual bool is_virtual() const { return _is_virtual; } | |
58 virtual JVMState* generate(JVMState* jvms); | |
59 vmIntrinsics::ID intrinsic_id() const { return _intrinsic_id; } | |
60 }; | |
61 | |
62 | |
63 // Local helper class for LibraryIntrinsic: | |
64 class LibraryCallKit : public GraphKit { | |
65 private: | |
66 LibraryIntrinsic* _intrinsic; // the library intrinsic being called | |
67 | |
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68 const TypeOopPtr* sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr = false); |
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69 |
0 | 70 public: |
71 LibraryCallKit(JVMState* caller, LibraryIntrinsic* intrinsic) | |
72 : GraphKit(caller), | |
73 _intrinsic(intrinsic) | |
74 { | |
75 } | |
76 | |
77 ciMethod* caller() const { return jvms()->method(); } | |
78 int bci() const { return jvms()->bci(); } | |
79 LibraryIntrinsic* intrinsic() const { return _intrinsic; } | |
80 vmIntrinsics::ID intrinsic_id() const { return _intrinsic->intrinsic_id(); } | |
81 ciMethod* callee() const { return _intrinsic->method(); } | |
82 ciSignature* signature() const { return callee()->signature(); } | |
83 int arg_size() const { return callee()->arg_size(); } | |
84 | |
85 bool try_to_inline(); | |
86 | |
87 // Helper functions to inline natives | |
88 void push_result(RegionNode* region, PhiNode* value); | |
89 Node* generate_guard(Node* test, RegionNode* region, float true_prob); | |
90 Node* generate_slow_guard(Node* test, RegionNode* region); | |
91 Node* generate_fair_guard(Node* test, RegionNode* region); | |
92 Node* generate_negative_guard(Node* index, RegionNode* region, | |
93 // resulting CastII of index: | |
94 Node* *pos_index = NULL); | |
95 Node* generate_nonpositive_guard(Node* index, bool never_negative, | |
96 // resulting CastII of index: | |
97 Node* *pos_index = NULL); | |
98 Node* generate_limit_guard(Node* offset, Node* subseq_length, | |
99 Node* array_length, | |
100 RegionNode* region); | |
101 Node* generate_current_thread(Node* &tls_output); | |
102 address basictype2arraycopy(BasicType t, Node *src_offset, Node *dest_offset, | |
2324 | 103 bool disjoint_bases, const char* &name, bool dest_uninitialized); |
0 | 104 Node* load_mirror_from_klass(Node* klass); |
105 Node* load_klass_from_mirror_common(Node* mirror, bool never_see_null, | |
106 int nargs, | |
107 RegionNode* region, int null_path, | |
108 int offset); | |
109 Node* load_klass_from_mirror(Node* mirror, bool never_see_null, int nargs, | |
110 RegionNode* region, int null_path) { | |
111 int offset = java_lang_Class::klass_offset_in_bytes(); | |
112 return load_klass_from_mirror_common(mirror, never_see_null, nargs, | |
113 region, null_path, | |
114 offset); | |
115 } | |
116 Node* load_array_klass_from_mirror(Node* mirror, bool never_see_null, | |
117 int nargs, | |
118 RegionNode* region, int null_path) { | |
119 int offset = java_lang_Class::array_klass_offset_in_bytes(); | |
120 return load_klass_from_mirror_common(mirror, never_see_null, nargs, | |
121 region, null_path, | |
122 offset); | |
123 } | |
124 Node* generate_access_flags_guard(Node* kls, | |
125 int modifier_mask, int modifier_bits, | |
126 RegionNode* region); | |
127 Node* generate_interface_guard(Node* kls, RegionNode* region); | |
128 Node* generate_array_guard(Node* kls, RegionNode* region) { | |
129 return generate_array_guard_common(kls, region, false, false); | |
130 } | |
131 Node* generate_non_array_guard(Node* kls, RegionNode* region) { | |
132 return generate_array_guard_common(kls, region, false, true); | |
133 } | |
134 Node* generate_objArray_guard(Node* kls, RegionNode* region) { | |
135 return generate_array_guard_common(kls, region, true, false); | |
136 } | |
137 Node* generate_non_objArray_guard(Node* kls, RegionNode* region) { | |
138 return generate_array_guard_common(kls, region, true, true); | |
139 } | |
140 Node* generate_array_guard_common(Node* kls, RegionNode* region, | |
141 bool obj_array, bool not_array); | |
142 Node* generate_virtual_guard(Node* obj_klass, RegionNode* slow_region); | |
143 CallJavaNode* generate_method_call(vmIntrinsics::ID method_id, | |
144 bool is_virtual = false, bool is_static = false); | |
145 CallJavaNode* generate_method_call_static(vmIntrinsics::ID method_id) { | |
146 return generate_method_call(method_id, false, true); | |
147 } | |
148 CallJavaNode* generate_method_call_virtual(vmIntrinsics::ID method_id) { | |
149 return generate_method_call(method_id, true, false); | |
150 } | |
151 | |
6057 | 152 Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2); |
153 Node* make_string_method_node(int opcode, Node* str1, Node* str2); | |
0 | 154 bool inline_string_compareTo(); |
155 bool inline_string_indexOf(); | |
156 Node* string_indexOf(Node* string_object, ciTypeArray* target_array, jint offset, jint cache_i, jint md2_i); | |
681 | 157 bool inline_string_equals(); |
0 | 158 Node* pop_math_arg(); |
159 bool runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName); | |
160 bool inline_math_native(vmIntrinsics::ID id); | |
161 bool inline_trig(vmIntrinsics::ID id); | |
162 bool inline_trans(vmIntrinsics::ID id); | |
163 bool inline_abs(vmIntrinsics::ID id); | |
164 bool inline_sqrt(vmIntrinsics::ID id); | |
6205 | 165 void finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName); |
0 | 166 bool inline_pow(vmIntrinsics::ID id); |
167 bool inline_exp(vmIntrinsics::ID id); | |
168 bool inline_min_max(vmIntrinsics::ID id); | |
169 Node* generate_min_max(vmIntrinsics::ID id, Node* x, Node* y); | |
170 // This returns Type::AnyPtr, RawPtr, or OopPtr. | |
171 int classify_unsafe_addr(Node* &base, Node* &offset); | |
172 Node* make_unsafe_address(Node* base, Node* offset); | |
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173 // Helper for inline_unsafe_access. |
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174 // Generates the guards that check whether the result of |
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175 // Unsafe.getObject should be recorded in an SATB log buffer. |
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176 void insert_pre_barrier(Node* base_oop, Node* offset, Node* pre_val, int nargs, bool need_mem_bar); |
0 | 177 bool inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile); |
178 bool inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static); | |
179 bool inline_unsafe_allocate(); | |
180 bool inline_unsafe_copyMemory(); | |
181 bool inline_native_currentThread(); | |
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182 #ifdef TRACE_HAVE_INTRINSICS |
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183 bool inline_native_classID(); |
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184 bool inline_native_threadID(); |
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185 #endif |
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186 bool inline_native_time_funcs(address method, const char* funcName); |
0 | 187 bool inline_native_isInterrupted(); |
188 bool inline_native_Class_query(vmIntrinsics::ID id); | |
189 bool inline_native_subtype_check(); | |
190 | |
191 bool inline_native_newArray(); | |
192 bool inline_native_getLength(); | |
193 bool inline_array_copyOf(bool is_copyOfRange); | |
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194 bool inline_array_equals(); |
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195 void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark); |
0 | 196 bool inline_native_clone(bool is_virtual); |
197 bool inline_native_Reflection_getCallerClass(); | |
198 bool is_method_invoke_or_aux_frame(JVMState* jvms); | |
199 // Helper function for inlining native object hash method | |
200 bool inline_native_hashcode(bool is_virtual, bool is_static); | |
201 bool inline_native_getClass(); | |
202 | |
203 // Helper functions for inlining arraycopy | |
204 bool inline_arraycopy(); | |
205 void generate_arraycopy(const TypePtr* adr_type, | |
206 BasicType basic_elem_type, | |
207 Node* src, Node* src_offset, | |
208 Node* dest, Node* dest_offset, | |
209 Node* copy_length, | |
210 bool disjoint_bases = false, | |
211 bool length_never_negative = false, | |
212 RegionNode* slow_region = NULL); | |
213 AllocateArrayNode* tightly_coupled_allocation(Node* ptr, | |
214 RegionNode* slow_region); | |
215 void generate_clear_array(const TypePtr* adr_type, | |
216 Node* dest, | |
217 BasicType basic_elem_type, | |
218 Node* slice_off, | |
219 Node* slice_len, | |
220 Node* slice_end); | |
221 bool generate_block_arraycopy(const TypePtr* adr_type, | |
222 BasicType basic_elem_type, | |
223 AllocateNode* alloc, | |
224 Node* src, Node* src_offset, | |
225 Node* dest, Node* dest_offset, | |
2324 | 226 Node* dest_size, bool dest_uninitialized); |
0 | 227 void generate_slow_arraycopy(const TypePtr* adr_type, |
228 Node* src, Node* src_offset, | |
229 Node* dest, Node* dest_offset, | |
2324 | 230 Node* copy_length, bool dest_uninitialized); |
0 | 231 Node* generate_checkcast_arraycopy(const TypePtr* adr_type, |
232 Node* dest_elem_klass, | |
233 Node* src, Node* src_offset, | |
234 Node* dest, Node* dest_offset, | |
2324 | 235 Node* copy_length, bool dest_uninitialized); |
0 | 236 Node* generate_generic_arraycopy(const TypePtr* adr_type, |
237 Node* src, Node* src_offset, | |
238 Node* dest, Node* dest_offset, | |
2324 | 239 Node* copy_length, bool dest_uninitialized); |
0 | 240 void generate_unchecked_arraycopy(const TypePtr* adr_type, |
241 BasicType basic_elem_type, | |
242 bool disjoint_bases, | |
243 Node* src, Node* src_offset, | |
244 Node* dest, Node* dest_offset, | |
2324 | 245 Node* copy_length, bool dest_uninitialized); |
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246 typedef enum { LS_xadd, LS_xchg, LS_cmpxchg } LoadStoreKind; |
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247 bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind); |
0 | 248 bool inline_unsafe_ordered_store(BasicType type); |
249 bool inline_fp_conversions(vmIntrinsics::ID id); | |
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250 bool inline_numberOfLeadingZeros(vmIntrinsics::ID id); |
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251 bool inline_numberOfTrailingZeros(vmIntrinsics::ID id); |
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252 bool inline_bitCount(vmIntrinsics::ID id); |
0 | 253 bool inline_reverseBytes(vmIntrinsics::ID id); |
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254 |
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255 bool inline_reference_get(); |
0 | 256 }; |
257 | |
258 | |
259 //---------------------------make_vm_intrinsic---------------------------- | |
260 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) { | |
261 vmIntrinsics::ID id = m->intrinsic_id(); | |
262 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); | |
263 | |
264 if (DisableIntrinsic[0] != '\0' | |
265 && strstr(DisableIntrinsic, vmIntrinsics::name_at(id)) != NULL) { | |
266 // disabled by a user request on the command line: | |
267 // example: -XX:DisableIntrinsic=_hashCode,_getClass | |
268 return NULL; | |
269 } | |
270 | |
271 if (!m->is_loaded()) { | |
272 // do not attempt to inline unloaded methods | |
273 return NULL; | |
274 } | |
275 | |
276 // Only a few intrinsics implement a virtual dispatch. | |
277 // They are expensive calls which are also frequently overridden. | |
278 if (is_virtual) { | |
279 switch (id) { | |
280 case vmIntrinsics::_hashCode: | |
281 case vmIntrinsics::_clone: | |
282 // OK, Object.hashCode and Object.clone intrinsics come in both flavors | |
283 break; | |
284 default: | |
285 return NULL; | |
286 } | |
287 } | |
288 | |
289 // -XX:-InlineNatives disables nearly all intrinsics: | |
290 if (!InlineNatives) { | |
291 switch (id) { | |
292 case vmIntrinsics::_indexOf: | |
293 case vmIntrinsics::_compareTo: | |
681 | 294 case vmIntrinsics::_equals: |
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295 case vmIntrinsics::_equalsC: |
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296 case vmIntrinsics::_getAndAddInt: |
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297 case vmIntrinsics::_getAndAddLong: |
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298 case vmIntrinsics::_getAndSetInt: |
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299 case vmIntrinsics::_getAndSetLong: |
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300 case vmIntrinsics::_getAndSetObject: |
0 | 301 break; // InlineNatives does not control String.compareTo |
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302 case vmIntrinsics::_Reference_get: |
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303 break; // InlineNatives does not control Reference.get |
0 | 304 default: |
305 return NULL; | |
306 } | |
307 } | |
308 | |
309 switch (id) { | |
310 case vmIntrinsics::_compareTo: | |
311 if (!SpecialStringCompareTo) return NULL; | |
312 break; | |
313 case vmIntrinsics::_indexOf: | |
314 if (!SpecialStringIndexOf) return NULL; | |
315 break; | |
681 | 316 case vmIntrinsics::_equals: |
317 if (!SpecialStringEquals) return NULL; | |
318 break; | |
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319 case vmIntrinsics::_equalsC: |
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320 if (!SpecialArraysEquals) return NULL; |
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321 break; |
0 | 322 case vmIntrinsics::_arraycopy: |
323 if (!InlineArrayCopy) return NULL; | |
324 break; | |
325 case vmIntrinsics::_copyMemory: | |
326 if (StubRoutines::unsafe_arraycopy() == NULL) return NULL; | |
327 if (!InlineArrayCopy) return NULL; | |
328 break; | |
329 case vmIntrinsics::_hashCode: | |
330 if (!InlineObjectHash) return NULL; | |
331 break; | |
332 case vmIntrinsics::_clone: | |
333 case vmIntrinsics::_copyOf: | |
334 case vmIntrinsics::_copyOfRange: | |
335 if (!InlineObjectCopy) return NULL; | |
336 // These also use the arraycopy intrinsic mechanism: | |
337 if (!InlineArrayCopy) return NULL; | |
338 break; | |
339 case vmIntrinsics::_checkIndex: | |
340 // We do not intrinsify this. The optimizer does fine with it. | |
341 return NULL; | |
342 | |
343 case vmIntrinsics::_getCallerClass: | |
344 if (!UseNewReflection) return NULL; | |
345 if (!InlineReflectionGetCallerClass) return NULL; | |
346 if (!JDK_Version::is_gte_jdk14x_version()) return NULL; | |
347 break; | |
348 | |
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349 case vmIntrinsics::_bitCount_i: |
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350 if (!Matcher::match_rule_supported(Op_PopCountI)) return NULL; |
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351 break; |
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352 |
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353 case vmIntrinsics::_bitCount_l: |
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354 if (!Matcher::match_rule_supported(Op_PopCountL)) return NULL; |
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355 break; |
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356 |
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357 case vmIntrinsics::_numberOfLeadingZeros_i: |
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358 if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return NULL; |
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359 break; |
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360 |
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361 case vmIntrinsics::_numberOfLeadingZeros_l: |
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362 if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return NULL; |
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363 break; |
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364 |
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365 case vmIntrinsics::_numberOfTrailingZeros_i: |
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366 if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return NULL; |
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367 break; |
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368 |
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369 case vmIntrinsics::_numberOfTrailingZeros_l: |
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370 if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return NULL; |
643
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371 break; |
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372 |
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373 case vmIntrinsics::_Reference_get: |
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374 // Use the intrinsic version of Reference.get() so that the value in |
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375 // the referent field can be registered by the G1 pre-barrier code. |
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376 // Also add memory barrier to prevent commoning reads from this field |
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377 // across safepoint since GC can change it value. |
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378 break; |
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379 |
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380 case vmIntrinsics::_compareAndSwapObject: |
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381 #ifdef _LP64 |
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382 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return NULL; |
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383 #endif |
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384 break; |
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385 |
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386 case vmIntrinsics::_compareAndSwapLong: |
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387 if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return NULL; |
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388 break; |
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389 |
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390 case vmIntrinsics::_getAndAddInt: |
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391 if (!Matcher::match_rule_supported(Op_GetAndAddI)) return NULL; |
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392 break; |
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393 |
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394 case vmIntrinsics::_getAndAddLong: |
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395 if (!Matcher::match_rule_supported(Op_GetAndAddL)) return NULL; |
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396 break; |
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397 |
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398 case vmIntrinsics::_getAndSetInt: |
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399 if (!Matcher::match_rule_supported(Op_GetAndSetI)) return NULL; |
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400 break; |
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401 |
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402 case vmIntrinsics::_getAndSetLong: |
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403 if (!Matcher::match_rule_supported(Op_GetAndSetL)) return NULL; |
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404 break; |
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405 |
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406 case vmIntrinsics::_getAndSetObject: |
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407 #ifdef _LP64 |
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408 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
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409 if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return NULL; |
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410 break; |
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411 #else |
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412 if (!Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
7eca5de9e0b6
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413 break; |
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414 #endif |
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415 |
0 | 416 default: |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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diff
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|
417 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility"); |
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418 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?"); |
0 | 419 break; |
420 } | |
421 | |
422 // -XX:-InlineClassNatives disables natives from the Class class. | |
423 // The flag applies to all reflective calls, notably Array.newArray | |
424 // (visible to Java programmers as Array.newInstance). | |
425 if (m->holder()->name() == ciSymbol::java_lang_Class() || | |
426 m->holder()->name() == ciSymbol::java_lang_reflect_Array()) { | |
427 if (!InlineClassNatives) return NULL; | |
428 } | |
429 | |
430 // -XX:-InlineThreadNatives disables natives from the Thread class. | |
431 if (m->holder()->name() == ciSymbol::java_lang_Thread()) { | |
432 if (!InlineThreadNatives) return NULL; | |
433 } | |
434 | |
435 // -XX:-InlineMathNatives disables natives from the Math,Float and Double classes. | |
436 if (m->holder()->name() == ciSymbol::java_lang_Math() || | |
437 m->holder()->name() == ciSymbol::java_lang_Float() || | |
438 m->holder()->name() == ciSymbol::java_lang_Double()) { | |
439 if (!InlineMathNatives) return NULL; | |
440 } | |
441 | |
442 // -XX:-InlineUnsafeOps disables natives from the Unsafe class. | |
443 if (m->holder()->name() == ciSymbol::sun_misc_Unsafe()) { | |
444 if (!InlineUnsafeOps) return NULL; | |
445 } | |
446 | |
447 return new LibraryIntrinsic(m, is_virtual, (vmIntrinsics::ID) id); | |
448 } | |
449 | |
450 //----------------------register_library_intrinsics----------------------- | |
451 // Initialize this file's data structures, for each Compile instance. | |
452 void Compile::register_library_intrinsics() { | |
453 // Nothing to do here. | |
454 } | |
455 | |
456 JVMState* LibraryIntrinsic::generate(JVMState* jvms) { | |
457 LibraryCallKit kit(jvms, this); | |
458 Compile* C = kit.C; | |
459 int nodes = C->unique(); | |
460 #ifndef PRODUCT | |
461 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
462 char buf[1000]; | |
463 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
464 tty->print_cr("Intrinsic %s", str); | |
465 } | |
466 #endif | |
3249
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467 |
0 | 468 if (kit.try_to_inline()) { |
469 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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470 CompileTask::print_inlining(kit.callee(), jvms->depth() - 1, kit.bci(), is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
0 | 471 } |
472 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); | |
473 if (C->log()) { | |
474 C->log()->elem("intrinsic id='%s'%s nodes='%d'", | |
475 vmIntrinsics::name_at(intrinsic_id()), | |
476 (is_virtual() ? " virtual='1'" : ""), | |
477 C->unique() - nodes); | |
478 } | |
479 return kit.transfer_exceptions_into_jvms(); | |
480 } | |
481 | |
5927
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482 // The intrinsic bailed out |
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|
483 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
484 if (jvms->has_method()) { |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
485 // Not a root compile. |
5927
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486 const char* msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)"; |
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487 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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|
488 } else { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
489 // Root compile |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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490 tty->print("Did not generate intrinsic %s%s at bci:%d in", |
856
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6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
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diff
changeset
|
491 vmIntrinsics::name_at(intrinsic_id()), |
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6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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diff
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|
492 (is_virtual() ? " (virtual)" : ""), kit.bci()); |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
493 } |
0 | 494 } |
495 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
496 return NULL; | |
497 } | |
498 | |
499 bool LibraryCallKit::try_to_inline() { | |
500 // Handle symbolic names for otherwise undistinguished boolean switches: | |
501 const bool is_store = true; | |
502 const bool is_native_ptr = true; | |
503 const bool is_static = true; | |
504 | |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
505 if (!jvms()->has_method()) { |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
506 // Root JVMState has a null method. |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
507 assert(map()->memory()->Opcode() == Op_Parm, ""); |
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|
508 // Insert the memory aliasing node |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
509 set_all_memory(reset_memory()); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
510 } |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
511 assert(merged_memory(), ""); |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
512 |
0 | 513 switch (intrinsic_id()) { |
514 case vmIntrinsics::_hashCode: | |
515 return inline_native_hashcode(intrinsic()->is_virtual(), !is_static); | |
516 case vmIntrinsics::_identityHashCode: | |
517 return inline_native_hashcode(/*!virtual*/ false, is_static); | |
518 case vmIntrinsics::_getClass: | |
519 return inline_native_getClass(); | |
520 | |
521 case vmIntrinsics::_dsin: | |
522 case vmIntrinsics::_dcos: | |
523 case vmIntrinsics::_dtan: | |
524 case vmIntrinsics::_dabs: | |
525 case vmIntrinsics::_datan2: | |
526 case vmIntrinsics::_dsqrt: | |
527 case vmIntrinsics::_dexp: | |
528 case vmIntrinsics::_dlog: | |
529 case vmIntrinsics::_dlog10: | |
530 case vmIntrinsics::_dpow: | |
531 return inline_math_native(intrinsic_id()); | |
532 | |
533 case vmIntrinsics::_min: | |
534 case vmIntrinsics::_max: | |
535 return inline_min_max(intrinsic_id()); | |
536 | |
537 case vmIntrinsics::_arraycopy: | |
538 return inline_arraycopy(); | |
539 | |
540 case vmIntrinsics::_compareTo: | |
541 return inline_string_compareTo(); | |
542 case vmIntrinsics::_indexOf: | |
543 return inline_string_indexOf(); | |
681 | 544 case vmIntrinsics::_equals: |
545 return inline_string_equals(); | |
0 | 546 |
547 case vmIntrinsics::_getObject: | |
548 return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, false); | |
549 case vmIntrinsics::_getBoolean: | |
550 return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, false); | |
551 case vmIntrinsics::_getByte: | |
552 return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, false); | |
553 case vmIntrinsics::_getShort: | |
554 return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, false); | |
555 case vmIntrinsics::_getChar: | |
556 return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, false); | |
557 case vmIntrinsics::_getInt: | |
558 return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, false); | |
559 case vmIntrinsics::_getLong: | |
560 return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, false); | |
561 case vmIntrinsics::_getFloat: | |
562 return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, false); | |
563 case vmIntrinsics::_getDouble: | |
564 return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, false); | |
565 | |
566 case vmIntrinsics::_putObject: | |
567 return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, false); | |
568 case vmIntrinsics::_putBoolean: | |
569 return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, false); | |
570 case vmIntrinsics::_putByte: | |
571 return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, false); | |
572 case vmIntrinsics::_putShort: | |
573 return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, false); | |
574 case vmIntrinsics::_putChar: | |
575 return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, false); | |
576 case vmIntrinsics::_putInt: | |
577 return inline_unsafe_access(!is_native_ptr, is_store, T_INT, false); | |
578 case vmIntrinsics::_putLong: | |
579 return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, false); | |
580 case vmIntrinsics::_putFloat: | |
581 return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, false); | |
582 case vmIntrinsics::_putDouble: | |
583 return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, false); | |
584 | |
585 case vmIntrinsics::_getByte_raw: | |
586 return inline_unsafe_access(is_native_ptr, !is_store, T_BYTE, false); | |
587 case vmIntrinsics::_getShort_raw: | |
588 return inline_unsafe_access(is_native_ptr, !is_store, T_SHORT, false); | |
589 case vmIntrinsics::_getChar_raw: | |
590 return inline_unsafe_access(is_native_ptr, !is_store, T_CHAR, false); | |
591 case vmIntrinsics::_getInt_raw: | |
592 return inline_unsafe_access(is_native_ptr, !is_store, T_INT, false); | |
593 case vmIntrinsics::_getLong_raw: | |
594 return inline_unsafe_access(is_native_ptr, !is_store, T_LONG, false); | |
595 case vmIntrinsics::_getFloat_raw: | |
596 return inline_unsafe_access(is_native_ptr, !is_store, T_FLOAT, false); | |
597 case vmIntrinsics::_getDouble_raw: | |
598 return inline_unsafe_access(is_native_ptr, !is_store, T_DOUBLE, false); | |
599 case vmIntrinsics::_getAddress_raw: | |
600 return inline_unsafe_access(is_native_ptr, !is_store, T_ADDRESS, false); | |
601 | |
602 case vmIntrinsics::_putByte_raw: | |
603 return inline_unsafe_access(is_native_ptr, is_store, T_BYTE, false); | |
604 case vmIntrinsics::_putShort_raw: | |
605 return inline_unsafe_access(is_native_ptr, is_store, T_SHORT, false); | |
606 case vmIntrinsics::_putChar_raw: | |
607 return inline_unsafe_access(is_native_ptr, is_store, T_CHAR, false); | |
608 case vmIntrinsics::_putInt_raw: | |
609 return inline_unsafe_access(is_native_ptr, is_store, T_INT, false); | |
610 case vmIntrinsics::_putLong_raw: | |
611 return inline_unsafe_access(is_native_ptr, is_store, T_LONG, false); | |
612 case vmIntrinsics::_putFloat_raw: | |
613 return inline_unsafe_access(is_native_ptr, is_store, T_FLOAT, false); | |
614 case vmIntrinsics::_putDouble_raw: | |
615 return inline_unsafe_access(is_native_ptr, is_store, T_DOUBLE, false); | |
616 case vmIntrinsics::_putAddress_raw: | |
617 return inline_unsafe_access(is_native_ptr, is_store, T_ADDRESS, false); | |
618 | |
619 case vmIntrinsics::_getObjectVolatile: | |
620 return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, true); | |
621 case vmIntrinsics::_getBooleanVolatile: | |
622 return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, true); | |
623 case vmIntrinsics::_getByteVolatile: | |
624 return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, true); | |
625 case vmIntrinsics::_getShortVolatile: | |
626 return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, true); | |
627 case vmIntrinsics::_getCharVolatile: | |
628 return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, true); | |
629 case vmIntrinsics::_getIntVolatile: | |
630 return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, true); | |
631 case vmIntrinsics::_getLongVolatile: | |
632 return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, true); | |
633 case vmIntrinsics::_getFloatVolatile: | |
634 return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, true); | |
635 case vmIntrinsics::_getDoubleVolatile: | |
636 return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, true); | |
637 | |
638 case vmIntrinsics::_putObjectVolatile: | |
639 return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, true); | |
640 case vmIntrinsics::_putBooleanVolatile: | |
641 return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, true); | |
642 case vmIntrinsics::_putByteVolatile: | |
643 return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, true); | |
644 case vmIntrinsics::_putShortVolatile: | |
645 return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, true); | |
646 case vmIntrinsics::_putCharVolatile: | |
647 return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, true); | |
648 case vmIntrinsics::_putIntVolatile: | |
649 return inline_unsafe_access(!is_native_ptr, is_store, T_INT, true); | |
650 case vmIntrinsics::_putLongVolatile: | |
651 return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, true); | |
652 case vmIntrinsics::_putFloatVolatile: | |
653 return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, true); | |
654 case vmIntrinsics::_putDoubleVolatile: | |
655 return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, true); | |
656 | |
657 case vmIntrinsics::_prefetchRead: | |
658 return inline_unsafe_prefetch(!is_native_ptr, !is_store, !is_static); | |
659 case vmIntrinsics::_prefetchWrite: | |
660 return inline_unsafe_prefetch(!is_native_ptr, is_store, !is_static); | |
661 case vmIntrinsics::_prefetchReadStatic: | |
662 return inline_unsafe_prefetch(!is_native_ptr, !is_store, is_static); | |
663 case vmIntrinsics::_prefetchWriteStatic: | |
664 return inline_unsafe_prefetch(!is_native_ptr, is_store, is_static); | |
665 | |
666 case vmIntrinsics::_compareAndSwapObject: | |
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667 return inline_unsafe_load_store(T_OBJECT, LS_cmpxchg); |
0 | 668 case vmIntrinsics::_compareAndSwapInt: |
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669 return inline_unsafe_load_store(T_INT, LS_cmpxchg); |
0 | 670 case vmIntrinsics::_compareAndSwapLong: |
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671 return inline_unsafe_load_store(T_LONG, LS_cmpxchg); |
0 | 672 |
673 case vmIntrinsics::_putOrderedObject: | |
674 return inline_unsafe_ordered_store(T_OBJECT); | |
675 case vmIntrinsics::_putOrderedInt: | |
676 return inline_unsafe_ordered_store(T_INT); | |
677 case vmIntrinsics::_putOrderedLong: | |
678 return inline_unsafe_ordered_store(T_LONG); | |
679 | |
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680 case vmIntrinsics::_getAndAddInt: |
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681 return inline_unsafe_load_store(T_INT, LS_xadd); |
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682 case vmIntrinsics::_getAndAddLong: |
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683 return inline_unsafe_load_store(T_LONG, LS_xadd); |
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684 case vmIntrinsics::_getAndSetInt: |
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685 return inline_unsafe_load_store(T_INT, LS_xchg); |
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686 case vmIntrinsics::_getAndSetLong: |
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687 return inline_unsafe_load_store(T_LONG, LS_xchg); |
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688 case vmIntrinsics::_getAndSetObject: |
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689 return inline_unsafe_load_store(T_OBJECT, LS_xchg); |
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690 |
0 | 691 case vmIntrinsics::_currentThread: |
692 return inline_native_currentThread(); | |
693 case vmIntrinsics::_isInterrupted: | |
694 return inline_native_isInterrupted(); | |
695 | |
6006
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696 #ifdef TRACE_HAVE_INTRINSICS |
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697 case vmIntrinsics::_classID: |
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698 return inline_native_classID(); |
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699 case vmIntrinsics::_threadID: |
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700 return inline_native_threadID(); |
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701 case vmIntrinsics::_counterTime: |
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702 return inline_native_time_funcs(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), "counterTime"); |
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703 #endif |
0 | 704 case vmIntrinsics::_currentTimeMillis: |
6006
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705 return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis"); |
0 | 706 case vmIntrinsics::_nanoTime: |
6006
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707 return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime"); |
0 | 708 case vmIntrinsics::_allocateInstance: |
709 return inline_unsafe_allocate(); | |
710 case vmIntrinsics::_copyMemory: | |
711 return inline_unsafe_copyMemory(); | |
712 case vmIntrinsics::_newArray: | |
713 return inline_native_newArray(); | |
714 case vmIntrinsics::_getLength: | |
715 return inline_native_getLength(); | |
716 case vmIntrinsics::_copyOf: | |
717 return inline_array_copyOf(false); | |
718 case vmIntrinsics::_copyOfRange: | |
719 return inline_array_copyOf(true); | |
169
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720 case vmIntrinsics::_equalsC: |
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721 return inline_array_equals(); |
0 | 722 case vmIntrinsics::_clone: |
723 return inline_native_clone(intrinsic()->is_virtual()); | |
724 | |
725 case vmIntrinsics::_isAssignableFrom: | |
726 return inline_native_subtype_check(); | |
727 | |
728 case vmIntrinsics::_isInstance: | |
729 case vmIntrinsics::_getModifiers: | |
730 case vmIntrinsics::_isInterface: | |
731 case vmIntrinsics::_isArray: | |
732 case vmIntrinsics::_isPrimitive: | |
733 case vmIntrinsics::_getSuperclass: | |
734 case vmIntrinsics::_getComponentType: | |
735 case vmIntrinsics::_getClassAccessFlags: | |
736 return inline_native_Class_query(intrinsic_id()); | |
737 | |
738 case vmIntrinsics::_floatToRawIntBits: | |
739 case vmIntrinsics::_floatToIntBits: | |
740 case vmIntrinsics::_intBitsToFloat: | |
741 case vmIntrinsics::_doubleToRawLongBits: | |
742 case vmIntrinsics::_doubleToLongBits: | |
743 case vmIntrinsics::_longBitsToDouble: | |
744 return inline_fp_conversions(intrinsic_id()); | |
745 | |
775
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746 case vmIntrinsics::_numberOfLeadingZeros_i: |
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747 case vmIntrinsics::_numberOfLeadingZeros_l: |
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748 return inline_numberOfLeadingZeros(intrinsic_id()); |
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749 |
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750 case vmIntrinsics::_numberOfTrailingZeros_i: |
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751 case vmIntrinsics::_numberOfTrailingZeros_l: |
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752 return inline_numberOfTrailingZeros(intrinsic_id()); |
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753 |
643
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754 case vmIntrinsics::_bitCount_i: |
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755 case vmIntrinsics::_bitCount_l: |
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756 return inline_bitCount(intrinsic_id()); |
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757 |
0 | 758 case vmIntrinsics::_reverseBytes_i: |
759 case vmIntrinsics::_reverseBytes_l: | |
1396
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760 case vmIntrinsics::_reverseBytes_s: |
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761 case vmIntrinsics::_reverseBytes_c: |
0 | 762 return inline_reverseBytes((vmIntrinsics::ID) intrinsic_id()); |
763 | |
764 case vmIntrinsics::_getCallerClass: | |
765 return inline_native_Reflection_getCallerClass(); | |
766 | |
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767 case vmIntrinsics::_Reference_get: |
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768 return inline_reference_get(); |
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769 |
0 | 770 default: |
771 // If you get here, it may be that someone has added a new intrinsic | |
772 // to the list in vmSymbols.hpp without implementing it here. | |
773 #ifndef PRODUCT | |
774 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
775 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)", | |
776 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
777 } | |
778 #endif | |
779 return false; | |
780 } | |
781 } | |
782 | |
783 //------------------------------push_result------------------------------ | |
784 // Helper function for finishing intrinsics. | |
785 void LibraryCallKit::push_result(RegionNode* region, PhiNode* value) { | |
786 record_for_igvn(region); | |
787 set_control(_gvn.transform(region)); | |
788 BasicType value_type = value->type()->basic_type(); | |
789 push_node(value_type, _gvn.transform(value)); | |
790 } | |
791 | |
792 //------------------------------generate_guard--------------------------- | |
793 // Helper function for generating guarded fast-slow graph structures. | |
794 // The given 'test', if true, guards a slow path. If the test fails | |
795 // then a fast path can be taken. (We generally hope it fails.) | |
796 // In all cases, GraphKit::control() is updated to the fast path. | |
797 // The returned value represents the control for the slow path. | |
798 // The return value is never 'top'; it is either a valid control | |
799 // or NULL if it is obvious that the slow path can never be taken. | |
800 // Also, if region and the slow control are not NULL, the slow edge | |
801 // is appended to the region. | |
802 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) { | |
803 if (stopped()) { | |
804 // Already short circuited. | |
805 return NULL; | |
806 } | |
807 | |
808 // Build an if node and its projections. | |
809 // If test is true we take the slow path, which we assume is uncommon. | |
810 if (_gvn.type(test) == TypeInt::ZERO) { | |
811 // The slow branch is never taken. No need to build this guard. | |
812 return NULL; | |
813 } | |
814 | |
815 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN); | |
816 | |
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817 Node* if_slow = _gvn.transform( new (C) IfTrueNode(iff) ); |
0 | 818 if (if_slow == top()) { |
819 // The slow branch is never taken. No need to build this guard. | |
820 return NULL; | |
821 } | |
822 | |
823 if (region != NULL) | |
824 region->add_req(if_slow); | |
825 | |
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826 Node* if_fast = _gvn.transform( new (C) IfFalseNode(iff) ); |
0 | 827 set_control(if_fast); |
828 | |
829 return if_slow; | |
830 } | |
831 | |
832 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) { | |
833 return generate_guard(test, region, PROB_UNLIKELY_MAG(3)); | |
834 } | |
835 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) { | |
836 return generate_guard(test, region, PROB_FAIR); | |
837 } | |
838 | |
839 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region, | |
840 Node* *pos_index) { | |
841 if (stopped()) | |
842 return NULL; // already stopped | |
843 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint] | |
844 return NULL; // index is already adequately typed | |
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845 Node* cmp_lt = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
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846 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 847 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN); |
848 if (is_neg != NULL && pos_index != NULL) { | |
849 // Emulate effect of Parse::adjust_map_after_if. | |
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850 Node* ccast = new (C) CastIINode(index, TypeInt::POS); |
0 | 851 ccast->set_req(0, control()); |
852 (*pos_index) = _gvn.transform(ccast); | |
853 } | |
854 return is_neg; | |
855 } | |
856 | |
857 inline Node* LibraryCallKit::generate_nonpositive_guard(Node* index, bool never_negative, | |
858 Node* *pos_index) { | |
859 if (stopped()) | |
860 return NULL; // already stopped | |
861 if (_gvn.type(index)->higher_equal(TypeInt::POS1)) // [1,maxint] | |
862 return NULL; // index is already adequately typed | |
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863 Node* cmp_le = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
0 | 864 BoolTest::mask le_or_eq = (never_negative ? BoolTest::eq : BoolTest::le); |
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865 Node* bol_le = _gvn.transform( new (C) BoolNode(cmp_le, le_or_eq) ); |
0 | 866 Node* is_notp = generate_guard(bol_le, NULL, PROB_MIN); |
867 if (is_notp != NULL && pos_index != NULL) { | |
868 // Emulate effect of Parse::adjust_map_after_if. | |
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869 Node* ccast = new (C) CastIINode(index, TypeInt::POS1); |
0 | 870 ccast->set_req(0, control()); |
871 (*pos_index) = _gvn.transform(ccast); | |
872 } | |
873 return is_notp; | |
874 } | |
875 | |
876 // Make sure that 'position' is a valid limit index, in [0..length]. | |
877 // There are two equivalent plans for checking this: | |
878 // A. (offset + copyLength) unsigned<= arrayLength | |
879 // B. offset <= (arrayLength - copyLength) | |
880 // We require that all of the values above, except for the sum and | |
881 // difference, are already known to be non-negative. | |
882 // Plan A is robust in the face of overflow, if offset and copyLength | |
883 // are both hugely positive. | |
884 // | |
885 // Plan B is less direct and intuitive, but it does not overflow at | |
886 // all, since the difference of two non-negatives is always | |
887 // representable. Whenever Java methods must perform the equivalent | |
888 // check they generally use Plan B instead of Plan A. | |
889 // For the moment we use Plan A. | |
890 inline Node* LibraryCallKit::generate_limit_guard(Node* offset, | |
891 Node* subseq_length, | |
892 Node* array_length, | |
893 RegionNode* region) { | |
894 if (stopped()) | |
895 return NULL; // already stopped | |
896 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO; | |
4778 | 897 if (zero_offset && subseq_length->eqv_uncast(array_length)) |
0 | 898 return NULL; // common case of whole-array copy |
899 Node* last = subseq_length; | |
900 if (!zero_offset) // last += offset | |
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901 last = _gvn.transform( new (C) AddINode(last, offset)); |
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902 Node* cmp_lt = _gvn.transform( new (C) CmpUNode(array_length, last) ); |
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903 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 904 Node* is_over = generate_guard(bol_lt, region, PROB_MIN); |
905 return is_over; | |
906 } | |
907 | |
908 | |
909 //--------------------------generate_current_thread-------------------- | |
910 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) { | |
911 ciKlass* thread_klass = env()->Thread_klass(); | |
912 const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull); | |
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913 Node* thread = _gvn.transform(new (C) ThreadLocalNode()); |
0 | 914 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset())); |
915 Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT); | |
916 tls_output = thread; | |
917 return threadObj; | |
918 } | |
919 | |
920 | |
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921 //------------------------------make_string_method_node------------------------ |
6057 | 922 // Helper method for String intrinsic functions. This version is called |
923 // with str1 and str2 pointing to String object nodes. | |
924 // | |
925 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* str2) { | |
986
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926 Node* no_ctrl = NULL; |
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927 |
6057 | 928 // Get start addr of string |
929 Node* str1_value = load_String_value(no_ctrl, str1); | |
930 Node* str1_offset = load_String_offset(no_ctrl, str1); | |
986
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931 Node* str1_start = array_element_address(str1_value, str1_offset, T_CHAR); |
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932 |
6057 | 933 // Get length of string 1 |
934 Node* str1_len = load_String_length(no_ctrl, str1); | |
935 | |
936 Node* str2_value = load_String_value(no_ctrl, str2); | |
937 Node* str2_offset = load_String_offset(no_ctrl, str2); | |
986
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938 Node* str2_start = array_element_address(str2_value, str2_offset, T_CHAR); |
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939 |
6057 | 940 Node* str2_len = NULL; |
941 Node* result = NULL; | |
942 | |
943 switch (opcode) { | |
944 case Op_StrIndexOf: | |
945 // Get length of string 2 | |
946 str2_len = load_String_length(no_ctrl, str2); | |
947 | |
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948 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 949 str1_start, str1_len, str2_start, str2_len); |
950 break; | |
951 case Op_StrComp: | |
952 // Get length of string 2 | |
953 str2_len = load_String_length(no_ctrl, str2); | |
954 | |
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955 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 956 str1_start, str1_len, str2_start, str2_len); |
957 break; | |
958 case Op_StrEquals: | |
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959 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 960 str1_start, str2_start, str1_len); |
961 break; | |
962 default: | |
963 ShouldNotReachHere(); | |
964 return NULL; | |
965 } | |
966 | |
967 // All these intrinsics have checks. | |
968 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
969 | |
970 return _gvn.transform(result); | |
971 } | |
972 | |
973 // Helper method for String intrinsic functions. This version is called | |
974 // with str1 and str2 pointing to char[] nodes, with cnt1 and cnt2 pointing | |
975 // to Int nodes containing the lenghts of str1 and str2. | |
976 // | |
977 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2) { | |
978 | |
986
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979 Node* result = NULL; |
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980 switch (opcode) { |
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981 case Op_StrIndexOf: |
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982 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 983 str1_start, cnt1, str2_start, cnt2); |
986
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984 break; |
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985 case Op_StrComp: |
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986 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 987 str1_start, cnt1, str2_start, cnt2); |
986
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988 break; |
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989 case Op_StrEquals: |
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990 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 991 str1_start, str2_start, cnt1); |
986
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992 break; |
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993 default: |
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994 ShouldNotReachHere(); |
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995 return NULL; |
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996 } |
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997 |
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998 // All these intrinsics have checks. |
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999 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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1000 |
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1001 return _gvn.transform(result); |
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1002 } |
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1003 |
0 | 1004 //------------------------------inline_string_compareTo------------------------ |
1005 bool LibraryCallKit::inline_string_compareTo() { | |
1006 | |
681 | 1007 if (!Matcher::has_match_rule(Op_StrComp)) return false; |
1008 | |
0 | 1009 _sp += 2; |
1010 Node *argument = pop(); // pop non-receiver first: it was pushed second | |
1011 Node *receiver = pop(); | |
1012 | |
1013 // Null check on self without removing any arguments. The argument | |
1014 // null check technically happens in the wrong place, which can lead to | |
1015 // invalid stack traces when string compare is inlined into a method | |
1016 // which handles NullPointerExceptions. | |
1017 _sp += 2; | |
1018 receiver = do_null_check(receiver, T_OBJECT); | |
1019 argument = do_null_check(argument, T_OBJECT); | |
1020 _sp -= 2; | |
1021 if (stopped()) { | |
1022 return true; | |
1023 } | |
1024 | |
6057 | 1025 Node* compare = make_string_method_node(Op_StrComp, receiver, argument); |
0 | 1026 push(compare); |
1027 return true; | |
1028 } | |
1029 | |
681 | 1030 //------------------------------inline_string_equals------------------------ |
1031 bool LibraryCallKit::inline_string_equals() { | |
1032 | |
1033 if (!Matcher::has_match_rule(Op_StrEquals)) return false; | |
1034 | |
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1035 int nargs = 2; |
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1036 _sp += nargs; |
681 | 1037 Node* argument = pop(); // pop non-receiver first: it was pushed second |
1038 Node* receiver = pop(); | |
1039 | |
1040 // Null check on self without removing any arguments. The argument | |
1041 // null check technically happens in the wrong place, which can lead to | |
1042 // invalid stack traces when string compare is inlined into a method | |
1043 // which handles NullPointerExceptions. | |
1746
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1044 _sp += nargs; |
681 | 1045 receiver = do_null_check(receiver, T_OBJECT); |
1046 //should not do null check for argument for String.equals(), because spec | |
1047 //allows to specify NULL as argument. | |
1746
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1048 _sp -= nargs; |
681 | 1049 |
1050 if (stopped()) { | |
1051 return true; | |
1052 } | |
1053 | |
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1054 // paths (plus control) merge |
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1055 RegionNode* region = new (C) RegionNode(5); |
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1056 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
986
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1057 |
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1058 // does source == target string? |
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1059 Node* cmp = _gvn.transform(new (C) CmpPNode(receiver, argument)); |
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1060 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::eq)); |
986
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1061 |
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1062 Node* if_eq = generate_slow_guard(bol, NULL); |
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1063 if (if_eq != NULL) { |
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1064 // receiver == argument |
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1065 phi->init_req(2, intcon(1)); |
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1066 region->init_req(2, if_eq); |
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1067 } |
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1068 |
681 | 1069 // get String klass for instanceOf |
1070 ciInstanceKlass* klass = env()->String_klass(); | |
1071 | |
986
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1072 if (!stopped()) { |
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1073 _sp += nargs; // gen_instanceof might do an uncommon trap |
986
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1074 Node* inst = gen_instanceof(argument, makecon(TypeKlassPtr::make(klass))); |
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1075 _sp -= nargs; |
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1076 Node* cmp = _gvn.transform(new (C) CmpINode(inst, intcon(1))); |
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1077 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::ne)); |
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1078 |
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1079 Node* inst_false = generate_guard(bol, NULL, PROB_MIN); |
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1080 //instanceOf == true, fallthrough |
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1081 |
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1082 if (inst_false != NULL) { |
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1083 phi->init_req(3, intcon(0)); |
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1084 region->init_req(3, inst_false); |
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1085 } |
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1086 } |
681 | 1087 |
986
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1088 if (!stopped()) { |
6057 | 1089 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass); |
1090 | |
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1091 // Properly cast the argument to String |
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1092 argument = _gvn.transform(new (C) CheckCastPPNode(control(), argument, string_type)); |
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1093 // This path is taken only when argument's type is String:NotNull. |
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1094 argument = cast_not_null(argument, false); |
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1095 |
6057 | 1096 Node* no_ctrl = NULL; |
1097 | |
1098 // Get start addr of receiver | |
1099 Node* receiver_val = load_String_value(no_ctrl, receiver); | |
1100 Node* receiver_offset = load_String_offset(no_ctrl, receiver); | |
1101 Node* receiver_start = array_element_address(receiver_val, receiver_offset, T_CHAR); | |
1102 | |
1103 // Get length of receiver | |
1104 Node* receiver_cnt = load_String_length(no_ctrl, receiver); | |
1105 | |
1106 // Get start addr of argument | |
1107 Node* argument_val = load_String_value(no_ctrl, argument); | |
1108 Node* argument_offset = load_String_offset(no_ctrl, argument); | |
1109 Node* argument_start = array_element_address(argument_val, argument_offset, T_CHAR); | |
1110 | |
1111 // Get length of argument | |
1112 Node* argument_cnt = load_String_length(no_ctrl, argument); | |
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1113 |
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1114 // Check for receiver count != argument count |
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1115 Node* cmp = _gvn.transform( new(C) CmpINode(receiver_cnt, argument_cnt) ); |
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1116 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::ne) ); |
986
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1117 Node* if_ne = generate_slow_guard(bol, NULL); |
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1118 if (if_ne != NULL) { |
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1119 phi->init_req(4, intcon(0)); |
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1120 region->init_req(4, if_ne); |
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1121 } |
6057 | 1122 |
1123 // Check for count == 0 is done by assembler code for StrEquals. | |
1124 | |
1125 if (!stopped()) { | |
1126 Node* equals = make_string_method_node(Op_StrEquals, receiver_start, receiver_cnt, argument_start, argument_cnt); | |
1127 phi->init_req(1, equals); | |
1128 region->init_req(1, control()); | |
1129 } | |
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1130 } |
681 | 1131 |
1132 // post merge | |
1133 set_control(_gvn.transform(region)); | |
1134 record_for_igvn(region); | |
1135 | |
1136 push(_gvn.transform(phi)); | |
1137 | |
1138 return true; | |
1139 } | |
1140 | |
169
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1141 //------------------------------inline_array_equals---------------------------- |
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1142 bool LibraryCallKit::inline_array_equals() { |
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1143 |
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1144 if (!Matcher::has_match_rule(Op_AryEq)) return false; |
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1145 |
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1146 _sp += 2; |
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1147 Node *argument2 = pop(); |
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1148 Node *argument1 = pop(); |
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1149 |
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1150 Node* equals = |
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1151 _gvn.transform(new (C) AryEqNode(control(), memory(TypeAryPtr::CHARS), |
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1152 argument1, argument2) ); |
169
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1153 push(equals); |
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1154 return true; |
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1155 } |
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1156 |
0 | 1157 // Java version of String.indexOf(constant string) |
1158 // class StringDecl { | |
1159 // StringDecl(char[] ca) { | |
1160 // offset = 0; | |
1161 // count = ca.length; | |
1162 // value = ca; | |
1163 // } | |
1164 // int offset; | |
1165 // int count; | |
1166 // char[] value; | |
1167 // } | |
1168 // | |
1169 // static int string_indexOf_J(StringDecl string_object, char[] target_object, | |
1170 // int targetOffset, int cache_i, int md2) { | |
1171 // int cache = cache_i; | |
1172 // int sourceOffset = string_object.offset; | |
1173 // int sourceCount = string_object.count; | |
1174 // int targetCount = target_object.length; | |
1175 // | |
1176 // int targetCountLess1 = targetCount - 1; | |
1177 // int sourceEnd = sourceOffset + sourceCount - targetCountLess1; | |
1178 // | |
1179 // char[] source = string_object.value; | |
1180 // char[] target = target_object; | |
1181 // int lastChar = target[targetCountLess1]; | |
1182 // | |
1183 // outer_loop: | |
1184 // for (int i = sourceOffset; i < sourceEnd; ) { | |
1185 // int src = source[i + targetCountLess1]; | |
1186 // if (src == lastChar) { | |
1187 // // With random strings and a 4-character alphabet, | |
1188 // // reverse matching at this point sets up 0.8% fewer | |
1189 // // frames, but (paradoxically) makes 0.3% more probes. | |
1190 // // Since those probes are nearer the lastChar probe, | |
1191 // // there is may be a net D$ win with reverse matching. | |
1192 // // But, reversing loop inhibits unroll of inner loop | |
1193 // // for unknown reason. So, does running outer loop from | |
1194 // // (sourceOffset - targetCountLess1) to (sourceOffset + sourceCount) | |
1195 // for (int j = 0; j < targetCountLess1; j++) { | |
1196 // if (target[targetOffset + j] != source[i+j]) { | |
1197 // if ((cache & (1 << source[i+j])) == 0) { | |
1198 // if (md2 < j+1) { | |
1199 // i += j+1; | |
1200 // continue outer_loop; | |
1201 // } | |
1202 // } | |
1203 // i += md2; | |
1204 // continue outer_loop; | |
1205 // } | |
1206 // } | |
1207 // return i - sourceOffset; | |
1208 // } | |
1209 // if ((cache & (1 << src)) == 0) { | |
1210 // i += targetCountLess1; | |
1211 // } // using "i += targetCount;" and an "else i++;" causes a jump to jump. | |
1212 // i++; | |
1213 // } | |
1214 // return -1; | |
1215 // } | |
1216 | |
1217 //------------------------------string_indexOf------------------------ | |
1218 Node* LibraryCallKit::string_indexOf(Node* string_object, ciTypeArray* target_array, jint targetOffset_i, | |
1219 jint cache_i, jint md2_i) { | |
1220 | |
1221 Node* no_ctrl = NULL; | |
1222 float likely = PROB_LIKELY(0.9); | |
1223 float unlikely = PROB_UNLIKELY(0.9); | |
1224 | |
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1225 const int nargs = 2; // number of arguments to push back for uncommon trap in predicate |
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1226 |
6057 | 1227 Node* source = load_String_value(no_ctrl, string_object); |
1228 Node* sourceOffset = load_String_offset(no_ctrl, string_object); | |
1229 Node* sourceCount = load_String_length(no_ctrl, string_object); | |
0 | 1230 |
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1231 Node* target = _gvn.transform( makecon(TypeOopPtr::make_from_constant(target_array, true)) ); |
0 | 1232 jint target_length = target_array->length(); |
1233 const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin)); | |
1234 const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot); | |
1235 | |
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1236 IdealKit kit(this, false, true); |
0 | 1237 #define __ kit. |
1238 Node* zero = __ ConI(0); | |
1239 Node* one = __ ConI(1); | |
1240 Node* cache = __ ConI(cache_i); | |
1241 Node* md2 = __ ConI(md2_i); | |
1242 Node* lastChar = __ ConI(target_array->char_at(target_length - 1)); | |
1243 Node* targetCount = __ ConI(target_length); | |
1244 Node* targetCountLess1 = __ ConI(target_length - 1); | |
1245 Node* targetOffset = __ ConI(targetOffset_i); | |
1246 Node* sourceEnd = __ SubI(__ AddI(sourceOffset, sourceCount), targetCountLess1); | |
1247 | |
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1248 IdealVariable rtn(kit), i(kit), j(kit); __ declarations_done(); |
0 | 1249 Node* outer_loop = __ make_label(2 /* goto */); |
1250 Node* return_ = __ make_label(1); | |
1251 | |
1252 __ set(rtn,__ ConI(-1)); | |
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1253 __ loop(this, nargs, i, sourceOffset, BoolTest::lt, sourceEnd); { |
0 | 1254 Node* i2 = __ AddI(__ value(i), targetCountLess1); |
1255 // pin to prohibit loading of "next iteration" value which may SEGV (rare) | |
1256 Node* src = load_array_element(__ ctrl(), source, i2, TypeAryPtr::CHARS); | |
1257 __ if_then(src, BoolTest::eq, lastChar, unlikely); { | |
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1258 __ loop(this, nargs, j, zero, BoolTest::lt, targetCountLess1); { |
0 | 1259 Node* tpj = __ AddI(targetOffset, __ value(j)); |
1260 Node* targ = load_array_element(no_ctrl, target, tpj, target_type); | |
1261 Node* ipj = __ AddI(__ value(i), __ value(j)); | |
1262 Node* src2 = load_array_element(no_ctrl, source, ipj, TypeAryPtr::CHARS); | |
1263 __ if_then(targ, BoolTest::ne, src2); { | |
1264 __ if_then(__ AndI(cache, __ LShiftI(one, src2)), BoolTest::eq, zero); { | |
1265 __ if_then(md2, BoolTest::lt, __ AddI(__ value(j), one)); { | |
1266 __ increment(i, __ AddI(__ value(j), one)); | |
1267 __ goto_(outer_loop); | |
1268 } __ end_if(); __ dead(j); | |
1269 }__ end_if(); __ dead(j); | |
1270 __ increment(i, md2); | |
1271 __ goto_(outer_loop); | |
1272 }__ end_if(); | |
1273 __ increment(j, one); | |
1274 }__ end_loop(); __ dead(j); | |
1275 __ set(rtn, __ SubI(__ value(i), sourceOffset)); __ dead(i); | |
1276 __ goto_(return_); | |
1277 }__ end_if(); | |
1278 __ if_then(__ AndI(cache, __ LShiftI(one, src)), BoolTest::eq, zero, likely); { | |
1279 __ increment(i, targetCountLess1); | |
1280 }__ end_if(); | |
1281 __ increment(i, one); | |
1282 __ bind(outer_loop); | |
1283 }__ end_loop(); __ dead(i); | |
1284 __ bind(return_); | |
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1285 |
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1286 // Final sync IdealKit and GraphKit. |
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1287 final_sync(kit); |
0 | 1288 Node* result = __ value(rtn); |
1289 #undef __ | |
1290 C->set_has_loops(true); | |
1291 return result; | |
1292 } | |
1293 | |
1294 //------------------------------inline_string_indexOf------------------------ | |
1295 bool LibraryCallKit::inline_string_indexOf() { | |
1296 | |
1297 _sp += 2; | |
681 | 1298 Node *argument = pop(); // pop non-receiver first: it was pushed second |
1299 Node *receiver = pop(); | |
1300 | |
1301 Node* result; | |
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1302 // Disable the use of pcmpestri until it can be guaranteed that |
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1303 // the load doesn't cross into the uncommited space. |
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1304 if (Matcher::has_match_rule(Op_StrIndexOf) && |
681 | 1305 UseSSE42Intrinsics) { |
1306 // Generate SSE4.2 version of indexOf | |
1307 // We currently only have match rules that use SSE4.2 | |
1308 | |
1309 // Null check on self without removing any arguments. The argument | |
1310 // null check technically happens in the wrong place, which can lead to | |
1311 // invalid stack traces when string compare is inlined into a method | |
1312 // which handles NullPointerExceptions. | |
1313 _sp += 2; | |
1314 receiver = do_null_check(receiver, T_OBJECT); | |
1315 argument = do_null_check(argument, T_OBJECT); | |
1316 _sp -= 2; | |
1317 | |
1318 if (stopped()) { | |
1319 return true; | |
1320 } | |
1321 | |
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1322 ciInstanceKlass* str_klass = env()->String_klass(); |
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1323 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(str_klass); |
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1324 |
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1325 // Make the merge point |
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1326 RegionNode* result_rgn = new (C) RegionNode(4); |
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1327 Node* result_phi = new (C) PhiNode(result_rgn, TypeInt::INT); |
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1328 Node* no_ctrl = NULL; |
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1329 |
6057 | 1330 // Get start addr of source string |
1331 Node* source = load_String_value(no_ctrl, receiver); | |
1332 Node* source_offset = load_String_offset(no_ctrl, receiver); | |
1333 Node* source_start = array_element_address(source, source_offset, T_CHAR); | |
1334 | |
1335 // Get length of source string | |
1336 Node* source_cnt = load_String_length(no_ctrl, receiver); | |
1337 | |
1338 // Get start addr of substring | |
1339 Node* substr = load_String_value(no_ctrl, argument); | |
1340 Node* substr_offset = load_String_offset(no_ctrl, argument); | |
1341 Node* substr_start = array_element_address(substr, substr_offset, T_CHAR); | |
1342 | |
1343 // Get length of source string | |
1344 Node* substr_cnt = load_String_length(no_ctrl, argument); | |
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1345 |
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1346 // Check for substr count > string count |
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1347 Node* cmp = _gvn.transform( new(C) CmpINode(substr_cnt, source_cnt) ); |
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1348 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::gt) ); |
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1349 Node* if_gt = generate_slow_guard(bol, NULL); |
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1350 if (if_gt != NULL) { |
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1351 result_phi->init_req(2, intcon(-1)); |
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1352 result_rgn->init_req(2, if_gt); |
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1353 } |
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1354 |
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1355 if (!stopped()) { |
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1356 // Check for substr count == 0 |
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1357 cmp = _gvn.transform( new(C) CmpINode(substr_cnt, intcon(0)) ); |
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1358 bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
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1359 Node* if_zero = generate_slow_guard(bol, NULL); |
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1360 if (if_zero != NULL) { |
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1361 result_phi->init_req(3, intcon(0)); |
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1362 result_rgn->init_req(3, if_zero); |
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1363 } |
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1364 } |
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1365 |
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1366 if (!stopped()) { |
6057 | 1367 result = make_string_method_node(Op_StrIndexOf, source_start, source_cnt, substr_start, substr_cnt); |
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1368 result_phi->init_req(1, result); |
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1369 result_rgn->init_req(1, control()); |
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1370 } |
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1371 set_control(_gvn.transform(result_rgn)); |
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1372 record_for_igvn(result_rgn); |
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1373 result = _gvn.transform(result_phi); |
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1374 |
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1375 } else { // Use LibraryCallKit::string_indexOf |
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1376 // don't intrinsify if argument isn't a constant string. |
681 | 1377 if (!argument->is_Con()) { |
1378 return false; | |
1379 } | |
1380 const TypeOopPtr* str_type = _gvn.type(argument)->isa_oopptr(); | |
1381 if (str_type == NULL) { | |
1382 return false; | |
1383 } | |
1384 ciInstanceKlass* klass = env()->String_klass(); | |
1385 ciObject* str_const = str_type->const_oop(); | |
1386 if (str_const == NULL || str_const->klass() != klass) { | |
1387 return false; | |
1388 } | |
1389 ciInstance* str = str_const->as_instance(); | |
1390 assert(str != NULL, "must be instance"); | |
1391 | |
6057 | 1392 ciObject* v = str->field_value_by_offset(java_lang_String::value_offset_in_bytes()).as_object(); |
681 | 1393 ciTypeArray* pat = v->as_type_array(); // pattern (argument) character array |
1394 | |
6057 | 1395 int o; |
1396 int c; | |
1397 if (java_lang_String::has_offset_field()) { | |
1398 o = str->field_value_by_offset(java_lang_String::offset_offset_in_bytes()).as_int(); | |
1399 c = str->field_value_by_offset(java_lang_String::count_offset_in_bytes()).as_int(); | |
1400 } else { | |
1401 o = 0; | |
1402 c = pat->length(); | |
1403 } | |
1404 | |
681 | 1405 // constant strings have no offset and count == length which |
1406 // simplifies the resulting code somewhat so lets optimize for that. | |
1407 if (o != 0 || c != pat->length()) { | |
1408 return false; | |
1409 } | |
1410 | |
1411 // Null check on self without removing any arguments. The argument | |
1412 // null check technically happens in the wrong place, which can lead to | |
1413 // invalid stack traces when string compare is inlined into a method | |
1414 // which handles NullPointerExceptions. | |
1415 _sp += 2; | |
1416 receiver = do_null_check(receiver, T_OBJECT); | |
1417 // No null check on the argument is needed since it's a constant String oop. | |
1418 _sp -= 2; | |
1419 if (stopped()) { | |
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1420 return true; |
681 | 1421 } |
1422 | |
1423 // The null string as a pattern always returns 0 (match at beginning of string) | |
1424 if (c == 0) { | |
1425 push(intcon(0)); | |
1426 return true; | |
1427 } | |
1428 | |
1429 // Generate default indexOf | |
1430 jchar lastChar = pat->char_at(o + (c - 1)); | |
1431 int cache = 0; | |
1432 int i; | |
1433 for (i = 0; i < c - 1; i++) { | |
1434 assert(i < pat->length(), "out of range"); | |
1435 cache |= (1 << (pat->char_at(o + i) & (sizeof(cache) * BitsPerByte - 1))); | |
1436 } | |
1437 | |
1438 int md2 = c; | |
1439 for (i = 0; i < c - 1; i++) { | |
1440 assert(i < pat->length(), "out of range"); | |
1441 if (pat->char_at(o + i) == lastChar) { | |
1442 md2 = (c - 1) - i; | |
1443 } | |
1444 } | |
1445 | |
1446 result = string_indexOf(receiver, pat, o, cache, md2); | |
0 | 1447 } |
1448 | |
1449 push(result); | |
1450 return true; | |
1451 } | |
1452 | |
1453 //--------------------------pop_math_arg-------------------------------- | |
1454 // Pop a double argument to a math function from the stack | |
1455 // rounding it if necessary. | |
1456 Node * LibraryCallKit::pop_math_arg() { | |
1457 Node *arg = pop_pair(); | |
1458 if( Matcher::strict_fp_requires_explicit_rounding && UseSSE<=1 ) | |
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1459 arg = _gvn.transform( new (C) RoundDoubleNode(0, arg) ); |
0 | 1460 return arg; |
1461 } | |
1462 | |
1463 //------------------------------inline_trig---------------------------------- | |
1464 // Inline sin/cos/tan instructions, if possible. If rounding is required, do | |
1465 // argument reduction which will turn into a fast/slow diamond. | |
1466 bool LibraryCallKit::inline_trig(vmIntrinsics::ID id) { | |
1467 _sp += arg_size(); // restore stack pointer | |
1468 Node* arg = pop_math_arg(); | |
1469 Node* trig = NULL; | |
1470 | |
1471 switch (id) { | |
1472 case vmIntrinsics::_dsin: | |
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1473 trig = _gvn.transform((Node*)new (C) SinDNode(arg)); |
0 | 1474 break; |
1475 case vmIntrinsics::_dcos: | |
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1476 trig = _gvn.transform((Node*)new (C) CosDNode(arg)); |
0 | 1477 break; |
1478 case vmIntrinsics::_dtan: | |
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1479 trig = _gvn.transform((Node*)new (C) TanDNode(arg)); |
0 | 1480 break; |
1481 default: | |
1482 assert(false, "bad intrinsic was passed in"); | |
1483 return false; | |
1484 } | |
1485 | |
1486 // Rounding required? Check for argument reduction! | |
1487 if( Matcher::strict_fp_requires_explicit_rounding ) { | |
1488 | |
1489 static const double pi_4 = 0.7853981633974483; | |
1490 static const double neg_pi_4 = -0.7853981633974483; | |
1491 // pi/2 in 80-bit extended precision | |
1492 // static const unsigned char pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0x3f,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1493 // -pi/2 in 80-bit extended precision | |
1494 // 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}; | |
1495 // Cutoff value for using this argument reduction technique | |
1496 //static const double pi_2_minus_epsilon = 1.564660403643354; | |
1497 //static const double neg_pi_2_plus_epsilon = -1.564660403643354; | |
1498 | |
1499 // Pseudocode for sin: | |
1500 // if (x <= Math.PI / 4.0) { | |
1501 // if (x >= -Math.PI / 4.0) return fsin(x); | |
1502 // if (x >= -Math.PI / 2.0) return -fcos(x + Math.PI / 2.0); | |
1503 // } else { | |
1504 // if (x <= Math.PI / 2.0) return fcos(x - Math.PI / 2.0); | |
1505 // } | |
1506 // return StrictMath.sin(x); | |
1507 | |
1508 // Pseudocode for cos: | |
1509 // if (x <= Math.PI / 4.0) { | |
1510 // if (x >= -Math.PI / 4.0) return fcos(x); | |
1511 // if (x >= -Math.PI / 2.0) return fsin(x + Math.PI / 2.0); | |
1512 // } else { | |
1513 // if (x <= Math.PI / 2.0) return -fsin(x - Math.PI / 2.0); | |
1514 // } | |
1515 // return StrictMath.cos(x); | |
1516 | |
1517 // Actually, sticking in an 80-bit Intel value into C2 will be tough; it | |
1518 // requires a special machine instruction to load it. Instead we'll try | |
1519 // the 'easy' case. If we really need the extra range +/- PI/2 we'll | |
1520 // probably do the math inside the SIN encoding. | |
1521 | |
1522 // Make the merge point | |
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1523 RegionNode *r = new (C) RegionNode(3); |
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1524 Node *phi = new (C) PhiNode(r,Type::DOUBLE); |
0 | 1525 |
1526 // Flatten arg so we need only 1 test | |
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1527 Node *abs = _gvn.transform(new (C) AbsDNode(arg)); |
0 | 1528 // Node for PI/4 constant |
1529 Node *pi4 = makecon(TypeD::make(pi_4)); | |
1530 // Check PI/4 : abs(arg) | |
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1531 Node *cmp = _gvn.transform(new (C) CmpDNode(pi4,abs)); |
0 | 1532 // Check: If PI/4 < abs(arg) then go slow |
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1533 Node *bol = _gvn.transform( new (C) BoolNode( cmp, BoolTest::lt ) ); |
0 | 1534 // Branch either way |
1535 IfNode *iff = create_and_xform_if(control(),bol, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
1536 set_control(opt_iff(r,iff)); | |
1537 | |
1538 // Set fast path result | |
1539 phi->init_req(2,trig); | |
1540 | |
1541 // Slow path - non-blocking leaf call | |
1542 Node* call = NULL; | |
1543 switch (id) { | |
1544 case vmIntrinsics::_dsin: | |
1545 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1546 CAST_FROM_FN_PTR(address, SharedRuntime::dsin), | |
1547 "Sin", NULL, arg, top()); | |
1548 break; | |
1549 case vmIntrinsics::_dcos: | |
1550 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1551 CAST_FROM_FN_PTR(address, SharedRuntime::dcos), | |
1552 "Cos", NULL, arg, top()); | |
1553 break; | |
1554 case vmIntrinsics::_dtan: | |
1555 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1556 CAST_FROM_FN_PTR(address, SharedRuntime::dtan), | |
1557 "Tan", NULL, arg, top()); | |
1558 break; | |
1559 } | |
1560 assert(control()->in(0) == call, ""); | |
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1561 Node* slow_result = _gvn.transform(new (C) ProjNode(call,TypeFunc::Parms)); |
0 | 1562 r->init_req(1,control()); |
1563 phi->init_req(1,slow_result); | |
1564 | |
1565 // Post-merge | |
1566 set_control(_gvn.transform(r)); | |
1567 record_for_igvn(r); | |
1568 trig = _gvn.transform(phi); | |
1569 | |
1570 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1571 } | |
1572 // Push result back on JVM stack | |
1573 push_pair(trig); | |
1574 return true; | |
1575 } | |
1576 | |
1577 //------------------------------inline_sqrt------------------------------------- | |
1578 // Inline square root instruction, if possible. | |
1579 bool LibraryCallKit::inline_sqrt(vmIntrinsics::ID id) { | |
1580 assert(id == vmIntrinsics::_dsqrt, "Not square root"); | |
1581 _sp += arg_size(); // restore stack pointer | |
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1582 push_pair(_gvn.transform(new (C) SqrtDNode(0, pop_math_arg()))); |
0 | 1583 return true; |
1584 } | |
1585 | |
1586 //------------------------------inline_abs------------------------------------- | |
1587 // Inline absolute value instruction, if possible. | |
1588 bool LibraryCallKit::inline_abs(vmIntrinsics::ID id) { | |
1589 assert(id == vmIntrinsics::_dabs, "Not absolute value"); | |
1590 _sp += arg_size(); // restore stack pointer | |
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1591 push_pair(_gvn.transform(new (C) AbsDNode(pop_math_arg()))); |
0 | 1592 return true; |
1593 } | |
1594 | |
6205 | 1595 void LibraryCallKit::finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName) { |
1596 //------------------- | |
1597 //result=(result.isNaN())? funcAddr():result; | |
1598 // Check: If isNaN() by checking result!=result? then either trap | |
1599 // or go to runtime | |
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1600 Node* cmpisnan = _gvn.transform(new (C) CmpDNode(result,result)); |
6205 | 1601 // Build the boolean node |
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1602 Node* bolisnum = _gvn.transform( new (C) BoolNode(cmpisnan, BoolTest::eq) ); |
6205 | 1603 |
1604 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1605 { | |
1606 BuildCutout unless(this, bolisnum, PROB_STATIC_FREQUENT); | |
1607 // End the current control-flow path | |
1608 push_pair(x); | |
1609 if (y != NULL) { | |
1610 push_pair(y); | |
1611 } | |
1612 // The pow or exp intrinsic returned a NaN, which requires a call | |
1613 // to the runtime. Recompile with the runtime call. | |
1614 uncommon_trap(Deoptimization::Reason_intrinsic, | |
1615 Deoptimization::Action_make_not_entrant); | |
1616 } | |
1617 push_pair(result); | |
1618 } else { | |
1619 // If this inlining ever returned NaN in the past, we compile a call | |
1620 // to the runtime to properly handle corner cases | |
1621 | |
1622 IfNode* iff = create_and_xform_if(control(), bolisnum, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
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1623 Node* if_slow = _gvn.transform( new (C) IfFalseNode(iff) ); |
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1624 Node* if_fast = _gvn.transform( new (C) IfTrueNode(iff) ); |
6205 | 1625 |
1626 if (!if_slow->is_top()) { | |
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1627 RegionNode* result_region = new(C) RegionNode(3); |
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1628 PhiNode* result_val = new (C) PhiNode(result_region, Type::DOUBLE); |
6205 | 1629 |
1630 result_region->init_req(1, if_fast); | |
1631 result_val->init_req(1, result); | |
1632 | |
1633 set_control(if_slow); | |
1634 | |
1635 const TypePtr* no_memory_effects = NULL; | |
1636 Node* rt = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1637 no_memory_effects, | |
1638 x, top(), y, y ? top() : NULL); | |
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1639 Node* value = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+0)); |
6205 | 1640 #ifdef ASSERT |
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1641 Node* value_top = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+1)); |
6205 | 1642 assert(value_top == top(), "second value must be top"); |
1643 #endif | |
1644 | |
1645 result_region->init_req(2, control()); | |
1646 result_val->init_req(2, value); | |
1647 push_result(result_region, result_val); | |
1648 } else { | |
1649 push_pair(result); | |
1650 } | |
1651 } | |
1652 } | |
1653 | |
0 | 1654 //------------------------------inline_exp------------------------------------- |
1655 // Inline exp instructions, if possible. The Intel hardware only misses | |
1656 // really odd corner cases (+/- Infinity). Just uncommon-trap them. | |
1657 bool LibraryCallKit::inline_exp(vmIntrinsics::ID id) { | |
1658 assert(id == vmIntrinsics::_dexp, "Not exp"); | |
1659 | |
1660 _sp += arg_size(); // restore stack pointer | |
1661 Node *x = pop_math_arg(); | |
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1662 Node *result = _gvn.transform(new (C) ExpDNode(0,x)); |
0 | 1663 |
6205 | 1664 finish_pow_exp(result, x, NULL, OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
0 | 1665 |
1666 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1667 | |
1668 return true; | |
1669 } | |
1670 | |
1671 //------------------------------inline_pow------------------------------------- | |
1672 // Inline power instructions, if possible. | |
1673 bool LibraryCallKit::inline_pow(vmIntrinsics::ID id) { | |
1674 assert(id == vmIntrinsics::_dpow, "Not pow"); | |
1675 | |
1676 // Pseudocode for pow | |
1677 // if (x <= 0.0) { | |
6205 | 1678 // long longy = (long)y; |
1679 // if ((double)longy == y) { // if y is long | |
1680 // if (y + 1 == y) longy = 0; // huge number: even | |
1681 // result = ((1&longy) == 0)?-DPow(abs(x), y):DPow(abs(x), y); | |
0 | 1682 // } else { |
1683 // result = NaN; | |
1684 // } | |
1685 // } else { | |
1686 // result = DPow(x,y); | |
1687 // } | |
1688 // if (result != result)? { | |
6205 | 1689 // result = uncommon_trap() or runtime_call(); |
0 | 1690 // } |
1691 // return result; | |
1692 | |
1693 _sp += arg_size(); // restore stack pointer | |
1694 Node* y = pop_math_arg(); | |
1695 Node* x = pop_math_arg(); | |
1696 | |
6205 | 1697 Node* result = NULL; |
1698 | |
1699 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1700 // Short form: skip the fancy tests and just check for NaN result. | |
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1701 result = _gvn.transform( new (C) PowDNode(0, x, y) ); |
0 | 1702 } else { |
6205 | 1703 // If this inlining ever returned NaN in the past, include all |
1704 // checks + call to the runtime. | |
0 | 1705 |
1706 // Set the merge point for If node with condition of (x <= 0.0) | |
1707 // There are four possible paths to region node and phi node | |
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1708 RegionNode *r = new (C) RegionNode(4); |
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1709 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1710 |
1711 // Build the first if node: if (x <= 0.0) | |
1712 // Node for 0 constant | |
1713 Node *zeronode = makecon(TypeD::ZERO); | |
1714 // Check x:0 | |
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1715 Node *cmp = _gvn.transform(new (C) CmpDNode(x, zeronode)); |
0 | 1716 // Check: If (x<=0) then go complex path |
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1717 Node *bol1 = _gvn.transform( new (C) BoolNode( cmp, BoolTest::le ) ); |
0 | 1718 // Branch either way |
1719 IfNode *if1 = create_and_xform_if(control(),bol1, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); | |
1720 // Fast path taken; set region slot 3 | |
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1721 Node *fast_taken = _gvn.transform( new (C) IfFalseNode(if1) ); |
0 | 1722 r->init_req(3,fast_taken); // Capture fast-control |
1723 | |
1724 // Fast path not-taken, i.e. slow path | |
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1725 Node *complex_path = _gvn.transform( new (C) IfTrueNode(if1) ); |
0 | 1726 |
1727 // Set fast path result | |
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1728 Node *fast_result = _gvn.transform( new (C) PowDNode(0, x, y) ); |
0 | 1729 phi->init_req(3, fast_result); |
1730 | |
1731 // Complex path | |
6205 | 1732 // Build the second if node (if y is long) |
1733 // Node for (long)y | |
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1734 Node *longy = _gvn.transform( new (C) ConvD2LNode(y)); |
6205 | 1735 // Node for (double)((long) y) |
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1736 Node *doublelongy= _gvn.transform( new (C) ConvL2DNode(longy)); |
6205 | 1737 // Check (double)((long) y) : y |
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1738 Node *cmplongy= _gvn.transform(new (C) CmpDNode(doublelongy, y)); |
6205 | 1739 // Check if (y isn't long) then go to slow path |
1740 | |
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1741 Node *bol2 = _gvn.transform( new (C) BoolNode( cmplongy, BoolTest::ne ) ); |
605 | 1742 // Branch either way |
0 | 1743 IfNode *if2 = create_and_xform_if(complex_path,bol2, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); |
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1744 Node* ylong_path = _gvn.transform( new (C) IfFalseNode(if2)); |
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1745 |
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1746 Node *slow_path = _gvn.transform( new (C) IfTrueNode(if2) ); |
6205 | 1747 |
1748 // Calculate DPow(abs(x), y)*(1 & (long)y) | |
0 | 1749 // Node for constant 1 |
6205 | 1750 Node *conone = longcon(1); |
1751 // 1& (long)y | |
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1752 Node *signnode= _gvn.transform( new (C) AndLNode(conone, longy) ); |
6205 | 1753 |
1754 // A huge number is always even. Detect a huge number by checking | |
1755 // if y + 1 == y and set integer to be tested for parity to 0. | |
1756 // Required for corner case: | |
1757 // (long)9.223372036854776E18 = max_jlong | |
1758 // (double)(long)9.223372036854776E18 = 9.223372036854776E18 | |
1759 // max_jlong is odd but 9.223372036854776E18 is even | |
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1760 Node* yplus1 = _gvn.transform( new (C) AddDNode(y, makecon(TypeD::make(1)))); |
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1761 Node *cmpyplus1= _gvn.transform(new (C) CmpDNode(yplus1, y)); |
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1762 Node *bolyplus1 = _gvn.transform( new (C) BoolNode( cmpyplus1, BoolTest::eq ) ); |
6205 | 1763 Node* correctedsign = NULL; |
1764 if (ConditionalMoveLimit != 0) { | |
1765 correctedsign = _gvn.transform( CMoveNode::make(C, NULL, bolyplus1, signnode, longcon(0), TypeLong::LONG)); | |
1766 } else { | |
1767 IfNode *ifyplus1 = create_and_xform_if(ylong_path,bolyplus1, PROB_FAIR, COUNT_UNKNOWN); | |
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1768 RegionNode *r = new (C) RegionNode(3); |
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1769 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
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1770 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyplus1))); |
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1771 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyplus1))); |
6205 | 1772 phi->init_req(1, signnode); |
1773 phi->init_req(2, longcon(0)); | |
1774 correctedsign = _gvn.transform(phi); | |
1775 ylong_path = _gvn.transform(r); | |
1776 record_for_igvn(r); | |
1777 } | |
1778 | |
0 | 1779 // zero node |
6205 | 1780 Node *conzero = longcon(0); |
1781 // Check (1&(long)y)==0? | |
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1782 Node *cmpeq1 = _gvn.transform(new (C) CmpLNode(correctedsign, conzero)); |
6205 | 1783 // Check if (1&(long)y)!=0?, if so the result is negative |
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1784 Node *bol3 = _gvn.transform( new (C) BoolNode( cmpeq1, BoolTest::ne ) ); |
0 | 1785 // abs(x) |
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1786 Node *absx=_gvn.transform( new (C) AbsDNode(x)); |
0 | 1787 // abs(x)^y |
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1788 Node *absxpowy = _gvn.transform( new (C) PowDNode(0, absx, y) ); |
0 | 1789 // -abs(x)^y |
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1790 Node *negabsxpowy = _gvn.transform(new (C) NegDNode (absxpowy)); |
6205 | 1791 // (1&(long)y)==1?-DPow(abs(x), y):DPow(abs(x), y) |
1792 Node *signresult = NULL; | |
1793 if (ConditionalMoveLimit != 0) { | |
1794 signresult = _gvn.transform( CMoveNode::make(C, NULL, bol3, absxpowy, negabsxpowy, Type::DOUBLE)); | |
1795 } else { | |
1796 IfNode *ifyeven = create_and_xform_if(ylong_path,bol3, PROB_FAIR, COUNT_UNKNOWN); | |
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1797 RegionNode *r = new (C) RegionNode(3); |
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1798 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
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1799 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyeven))); |
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1800 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyeven))); |
6205 | 1801 phi->init_req(1, absxpowy); |
1802 phi->init_req(2, negabsxpowy); | |
1803 signresult = _gvn.transform(phi); | |
1804 ylong_path = _gvn.transform(r); | |
1805 record_for_igvn(r); | |
1806 } | |
0 | 1807 // Set complex path fast result |
6205 | 1808 r->init_req(2, ylong_path); |
0 | 1809 phi->init_req(2, signresult); |
1810 | |
1811 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
1812 Node *slow_result = makecon(TypeD::make(*(double*)&nan_bits)); // return NaN | |
1813 r->init_req(1,slow_path); | |
1814 phi->init_req(1,slow_result); | |
1815 | |
1816 // Post merge | |
1817 set_control(_gvn.transform(r)); | |
1818 record_for_igvn(r); | |
1819 result=_gvn.transform(phi); | |
1820 } | |
1821 | |
6205 | 1822 finish_pow_exp(result, x, y, OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
0 | 1823 |
1824 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1825 | |
1826 return true; | |
1827 } | |
1828 | |
1829 //------------------------------inline_trans------------------------------------- | |
1830 // Inline transcendental instructions, if possible. The Intel hardware gets | |
1831 // these right, no funny corner cases missed. | |
1832 bool LibraryCallKit::inline_trans(vmIntrinsics::ID id) { | |
1833 _sp += arg_size(); // restore stack pointer | |
1834 Node* arg = pop_math_arg(); | |
1835 Node* trans = NULL; | |
1836 | |
1837 switch (id) { | |
1838 case vmIntrinsics::_dlog: | |
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1839 trans = _gvn.transform((Node*)new (C) LogDNode(arg)); |
0 | 1840 break; |
1841 case vmIntrinsics::_dlog10: | |
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1842 trans = _gvn.transform((Node*)new (C) Log10DNode(arg)); |
0 | 1843 break; |
1844 default: | |
1845 assert(false, "bad intrinsic was passed in"); | |
1846 return false; | |
1847 } | |
1848 | |
1849 // Push result back on JVM stack | |
1850 push_pair(trans); | |
1851 return true; | |
1852 } | |
1853 | |
1854 //------------------------------runtime_math----------------------------- | |
1855 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) { | |
1856 Node* a = NULL; | |
1857 Node* b = NULL; | |
1858 | |
1859 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(), | |
1860 "must be (DD)D or (D)D type"); | |
1861 | |
1862 // Inputs | |
1863 _sp += arg_size(); // restore stack pointer | |
1864 if (call_type == OptoRuntime::Math_DD_D_Type()) { | |
1865 b = pop_math_arg(); | |
1866 } | |
1867 a = pop_math_arg(); | |
1868 | |
1869 const TypePtr* no_memory_effects = NULL; | |
1870 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1871 no_memory_effects, | |
1872 a, top(), b, b ? top() : NULL); | |
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1873 Node* value = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+0)); |
0 | 1874 #ifdef ASSERT |
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1875 Node* value_top = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+1)); |
0 | 1876 assert(value_top == top(), "second value must be top"); |
1877 #endif | |
1878 | |
1879 push_pair(value); | |
1880 return true; | |
1881 } | |
1882 | |
1883 //------------------------------inline_math_native----------------------------- | |
1884 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) { | |
1885 switch (id) { | |
1886 // These intrinsics are not properly supported on all hardware | |
1887 case vmIntrinsics::_dcos: return Matcher::has_match_rule(Op_CosD) ? inline_trig(id) : | |
1888 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dcos), "COS"); | |
1889 case vmIntrinsics::_dsin: return Matcher::has_match_rule(Op_SinD) ? inline_trig(id) : | |
1890 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dsin), "SIN"); | |
1891 case vmIntrinsics::_dtan: return Matcher::has_match_rule(Op_TanD) ? inline_trig(id) : | |
1892 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dtan), "TAN"); | |
1893 | |
1894 case vmIntrinsics::_dlog: return Matcher::has_match_rule(Op_LogD) ? inline_trans(id) : | |
1895 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dlog), "LOG"); | |
1896 case vmIntrinsics::_dlog10: return Matcher::has_match_rule(Op_Log10D) ? inline_trans(id) : | |
1897 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dlog10), "LOG10"); | |
1898 | |
1899 // These intrinsics are supported on all hardware | |
1900 case vmIntrinsics::_dsqrt: return Matcher::has_match_rule(Op_SqrtD) ? inline_sqrt(id) : false; | |
1901 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_abs(id) : false; | |
1902 | |
1903 case vmIntrinsics::_dexp: return | |
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1904 Matcher::has_match_rule(Op_ExpD) ? inline_exp(id) : |
0 | 1905 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
1906 case vmIntrinsics::_dpow: return | |
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1907 Matcher::has_match_rule(Op_PowD) ? inline_pow(id) : |
0 | 1908 runtime_math(OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
1909 | |
1910 // These intrinsics are not yet correctly implemented | |
1911 case vmIntrinsics::_datan2: | |
1912 return false; | |
1913 | |
1914 default: | |
1915 ShouldNotReachHere(); | |
1916 return false; | |
1917 } | |
1918 } | |
1919 | |
1920 static bool is_simple_name(Node* n) { | |
1921 return (n->req() == 1 // constant | |
1922 || (n->is_Type() && n->as_Type()->type()->singleton()) | |
1923 || n->is_Proj() // parameter or return value | |
1924 || n->is_Phi() // local of some sort | |
1925 ); | |
1926 } | |
1927 | |
1928 //----------------------------inline_min_max----------------------------------- | |
1929 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) { | |
1930 push(generate_min_max(id, argument(0), argument(1))); | |
1931 | |
1932 return true; | |
1933 } | |
1934 | |
1935 Node* | |
1936 LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) { | |
1937 // These are the candidate return value: | |
1938 Node* xvalue = x0; | |
1939 Node* yvalue = y0; | |
1940 | |
1941 if (xvalue == yvalue) { | |
1942 return xvalue; | |
1943 } | |
1944 | |
1945 bool want_max = (id == vmIntrinsics::_max); | |
1946 | |
1947 const TypeInt* txvalue = _gvn.type(xvalue)->isa_int(); | |
1948 const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int(); | |
1949 if (txvalue == NULL || tyvalue == NULL) return top(); | |
1950 // This is not really necessary, but it is consistent with a | |
1951 // hypothetical MaxINode::Value method: | |
1952 int widen = MAX2(txvalue->_widen, tyvalue->_widen); | |
1953 | |
1954 // %%% This folding logic should (ideally) be in a different place. | |
1955 // Some should be inside IfNode, and there to be a more reliable | |
1956 // transformation of ?: style patterns into cmoves. We also want | |
1957 // more powerful optimizations around cmove and min/max. | |
1958 | |
1959 // Try to find a dominating comparison of these guys. | |
1960 // It can simplify the index computation for Arrays.copyOf | |
1961 // and similar uses of System.arraycopy. | |
1962 // First, compute the normalized version of CmpI(x, y). | |
1963 int cmp_op = Op_CmpI; | |
1964 Node* xkey = xvalue; | |
1965 Node* ykey = yvalue; | |
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1966 Node* ideal_cmpxy = _gvn.transform( new(C) CmpINode(xkey, ykey) ); |
0 | 1967 if (ideal_cmpxy->is_Cmp()) { |
1968 // E.g., if we have CmpI(length - offset, count), | |
1969 // it might idealize to CmpI(length, count + offset) | |
1970 cmp_op = ideal_cmpxy->Opcode(); | |
1971 xkey = ideal_cmpxy->in(1); | |
1972 ykey = ideal_cmpxy->in(2); | |
1973 } | |
1974 | |
1975 // Start by locating any relevant comparisons. | |
1976 Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey; | |
1977 Node* cmpxy = NULL; | |
1978 Node* cmpyx = NULL; | |
1979 for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) { | |
1980 Node* cmp = start_from->fast_out(k); | |
1981 if (cmp->outcnt() > 0 && // must have prior uses | |
1982 cmp->in(0) == NULL && // must be context-independent | |
1983 cmp->Opcode() == cmp_op) { // right kind of compare | |
1984 if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp; | |
1985 if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp; | |
1986 } | |
1987 } | |
1988 | |
1989 const int NCMPS = 2; | |
1990 Node* cmps[NCMPS] = { cmpxy, cmpyx }; | |
1991 int cmpn; | |
1992 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
1993 if (cmps[cmpn] != NULL) break; // find a result | |
1994 } | |
1995 if (cmpn < NCMPS) { | |
1996 // Look for a dominating test that tells us the min and max. | |
1997 int depth = 0; // Limit search depth for speed | |
1998 Node* dom = control(); | |
1999 for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) { | |
2000 if (++depth >= 100) break; | |
2001 Node* ifproj = dom; | |
2002 if (!ifproj->is_Proj()) continue; | |
2003 Node* iff = ifproj->in(0); | |
2004 if (!iff->is_If()) continue; | |
2005 Node* bol = iff->in(1); | |
2006 if (!bol->is_Bool()) continue; | |
2007 Node* cmp = bol->in(1); | |
2008 if (cmp == NULL) continue; | |
2009 for (cmpn = 0; cmpn < NCMPS; cmpn++) | |
2010 if (cmps[cmpn] == cmp) break; | |
2011 if (cmpn == NCMPS) continue; | |
2012 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2013 if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate(); | |
2014 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2015 // At this point, we know that 'x btest y' is true. | |
2016 switch (btest) { | |
2017 case BoolTest::eq: | |
2018 // They are proven equal, so we can collapse the min/max. | |
2019 // Either value is the answer. Choose the simpler. | |
2020 if (is_simple_name(yvalue) && !is_simple_name(xvalue)) | |
2021 return yvalue; | |
2022 return xvalue; | |
2023 case BoolTest::lt: // x < y | |
2024 case BoolTest::le: // x <= y | |
2025 return (want_max ? yvalue : xvalue); | |
2026 case BoolTest::gt: // x > y | |
2027 case BoolTest::ge: // x >= y | |
2028 return (want_max ? xvalue : yvalue); | |
2029 } | |
2030 } | |
2031 } | |
2032 | |
2033 // We failed to find a dominating test. | |
2034 // Let's pick a test that might GVN with prior tests. | |
2035 Node* best_bol = NULL; | |
2036 BoolTest::mask best_btest = BoolTest::illegal; | |
2037 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
2038 Node* cmp = cmps[cmpn]; | |
2039 if (cmp == NULL) continue; | |
2040 for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) { | |
2041 Node* bol = cmp->fast_out(j); | |
2042 if (!bol->is_Bool()) continue; | |
2043 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2044 if (btest == BoolTest::eq || btest == BoolTest::ne) continue; | |
2045 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2046 if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) { | |
2047 best_bol = bol->as_Bool(); | |
2048 best_btest = btest; | |
2049 } | |
2050 } | |
2051 } | |
2052 | |
2053 Node* answer_if_true = NULL; | |
2054 Node* answer_if_false = NULL; | |
2055 switch (best_btest) { | |
2056 default: | |
2057 if (cmpxy == NULL) | |
2058 cmpxy = ideal_cmpxy; | |
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2059 best_bol = _gvn.transform( new(C) BoolNode(cmpxy, BoolTest::lt) ); |
0 | 2060 // and fall through: |
2061 case BoolTest::lt: // x < y | |
2062 case BoolTest::le: // x <= y | |
2063 answer_if_true = (want_max ? yvalue : xvalue); | |
2064 answer_if_false = (want_max ? xvalue : yvalue); | |
2065 break; | |
2066 case BoolTest::gt: // x > y | |
2067 case BoolTest::ge: // x >= y | |
2068 answer_if_true = (want_max ? xvalue : yvalue); | |
2069 answer_if_false = (want_max ? yvalue : xvalue); | |
2070 break; | |
2071 } | |
2072 | |
2073 jint hi, lo; | |
2074 if (want_max) { | |
2075 // We can sharpen the minimum. | |
2076 hi = MAX2(txvalue->_hi, tyvalue->_hi); | |
2077 lo = MAX2(txvalue->_lo, tyvalue->_lo); | |
2078 } else { | |
2079 // We can sharpen the maximum. | |
2080 hi = MIN2(txvalue->_hi, tyvalue->_hi); | |
2081 lo = MIN2(txvalue->_lo, tyvalue->_lo); | |
2082 } | |
2083 | |
2084 // Use a flow-free graph structure, to avoid creating excess control edges | |
2085 // which could hinder other optimizations. | |
2086 // Since Math.min/max is often used with arraycopy, we want | |
2087 // tightly_coupled_allocation to be able to see beyond min/max expressions. | |
2088 Node* cmov = CMoveNode::make(C, NULL, best_bol, | |
2089 answer_if_false, answer_if_true, | |
2090 TypeInt::make(lo, hi, widen)); | |
2091 | |
2092 return _gvn.transform(cmov); | |
2093 | |
2094 /* | |
2095 // This is not as desirable as it may seem, since Min and Max | |
2096 // nodes do not have a full set of optimizations. | |
2097 // And they would interfere, anyway, with 'if' optimizations | |
2098 // and with CMoveI canonical forms. | |
2099 switch (id) { | |
2100 case vmIntrinsics::_min: | |
2101 result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break; | |
2102 case vmIntrinsics::_max: | |
2103 result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break; | |
2104 default: | |
2105 ShouldNotReachHere(); | |
2106 } | |
2107 */ | |
2108 } | |
2109 | |
2110 inline int | |
2111 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset) { | |
2112 const TypePtr* base_type = TypePtr::NULL_PTR; | |
2113 if (base != NULL) base_type = _gvn.type(base)->isa_ptr(); | |
2114 if (base_type == NULL) { | |
2115 // Unknown type. | |
2116 return Type::AnyPtr; | |
2117 } else if (base_type == TypePtr::NULL_PTR) { | |
2118 // Since this is a NULL+long form, we have to switch to a rawptr. | |
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2119 base = _gvn.transform( new (C) CastX2PNode(offset) ); |
0 | 2120 offset = MakeConX(0); |
2121 return Type::RawPtr; | |
2122 } else if (base_type->base() == Type::RawPtr) { | |
2123 return Type::RawPtr; | |
2124 } else if (base_type->isa_oopptr()) { | |
2125 // Base is never null => always a heap address. | |
2126 if (base_type->ptr() == TypePtr::NotNull) { | |
2127 return Type::OopPtr; | |
2128 } | |
2129 // Offset is small => always a heap address. | |
2130 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t(); | |
2131 if (offset_type != NULL && | |
2132 base_type->offset() == 0 && // (should always be?) | |
2133 offset_type->_lo >= 0 && | |
2134 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) { | |
2135 return Type::OopPtr; | |
2136 } | |
2137 // Otherwise, it might either be oop+off or NULL+addr. | |
2138 return Type::AnyPtr; | |
2139 } else { | |
2140 // No information: | |
2141 return Type::AnyPtr; | |
2142 } | |
2143 } | |
2144 | |
2145 inline Node* LibraryCallKit::make_unsafe_address(Node* base, Node* offset) { | |
2146 int kind = classify_unsafe_addr(base, offset); | |
2147 if (kind == Type::RawPtr) { | |
2148 return basic_plus_adr(top(), base, offset); | |
2149 } else { | |
2150 return basic_plus_adr(base, offset); | |
2151 } | |
2152 } | |
2153 | |
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2154 //-------------------inline_numberOfLeadingZeros_int/long----------------------- |
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2155 // inline int Integer.numberOfLeadingZeros(int) |
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2156 // inline int Long.numberOfLeadingZeros(long) |
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2157 bool LibraryCallKit::inline_numberOfLeadingZeros(vmIntrinsics::ID id) { |
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2158 assert(id == vmIntrinsics::_numberOfLeadingZeros_i || id == vmIntrinsics::_numberOfLeadingZeros_l, "not numberOfLeadingZeros"); |
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2159 if (id == vmIntrinsics::_numberOfLeadingZeros_i && !Matcher::match_rule_supported(Op_CountLeadingZerosI)) return false; |
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2160 if (id == vmIntrinsics::_numberOfLeadingZeros_l && !Matcher::match_rule_supported(Op_CountLeadingZerosL)) return false; |
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2161 _sp += arg_size(); // restore stack pointer |
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6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2162 switch (id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2163 case vmIntrinsics::_numberOfLeadingZeros_i: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2164 push(_gvn.transform(new (C) CountLeadingZerosINode(pop()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2165 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2166 case vmIntrinsics::_numberOfLeadingZeros_l: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2167 push(_gvn.transform(new (C) CountLeadingZerosLNode(pop_pair()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2168 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2169 default: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2170 ShouldNotReachHere(); |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2171 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2172 return true; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2173 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2174 |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2175 //-------------------inline_numberOfTrailingZeros_int/long---------------------- |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2176 // inline int Integer.numberOfTrailingZeros(int) |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2177 // inline int Long.numberOfTrailingZeros(long) |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2178 bool LibraryCallKit::inline_numberOfTrailingZeros(vmIntrinsics::ID id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2179 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
|
2180 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
|
2181 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
|
2182 _sp += arg_size(); // restore stack pointer |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2183 switch (id) { |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2184 case vmIntrinsics::_numberOfTrailingZeros_i: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2185 push(_gvn.transform(new (C) CountTrailingZerosINode(pop()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2186 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2187 case vmIntrinsics::_numberOfTrailingZeros_l: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2188 push(_gvn.transform(new (C) CountTrailingZerosLNode(pop_pair()))); |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2189 break; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2190 default: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2191 ShouldNotReachHere(); |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2192 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2193 return true; |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2194 } |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
changeset
|
2195 |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2196 //----------------------------inline_bitCount_int/long----------------------- |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2197 // inline int Integer.bitCount(int) |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2198 // inline int Long.bitCount(long) |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2199 bool LibraryCallKit::inline_bitCount(vmIntrinsics::ID id) { |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2200 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
|
2201 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
|
2202 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
|
2203 _sp += arg_size(); // restore stack pointer |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2204 switch (id) { |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2205 case vmIntrinsics::_bitCount_i: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2206 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
|
2207 break; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2208 case vmIntrinsics::_bitCount_l: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2209 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
|
2210 break; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2211 default: |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2212 ShouldNotReachHere(); |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2213 } |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2214 return true; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2215 } |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
2216 |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2217 //----------------------------inline_reverseBytes_int/long/char/short------------------- |
605 | 2218 // inline Integer.reverseBytes(int) |
2219 // inline Long.reverseBytes(long) | |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2220 // inline Character.reverseBytes(char) |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2221 // inline Short.reverseBytes(short) |
0 | 2222 bool LibraryCallKit::inline_reverseBytes(vmIntrinsics::ID id) { |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2223 assert(id == vmIntrinsics::_reverseBytes_i || id == vmIntrinsics::_reverseBytes_l || |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2224 id == vmIntrinsics::_reverseBytes_c || id == vmIntrinsics::_reverseBytes_s, |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2225 "not reverse Bytes"); |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2226 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
|
2227 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
|
2228 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
|
2229 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
|
2230 _sp += arg_size(); // restore stack pointer |
0 | 2231 switch (id) { |
2232 case vmIntrinsics::_reverseBytes_i: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2233 push(_gvn.transform(new (C) ReverseBytesINode(0, pop()))); |
0 | 2234 break; |
2235 case vmIntrinsics::_reverseBytes_l: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2236 push_pair(_gvn.transform(new (C) ReverseBytesLNode(0, pop_pair()))); |
0 | 2237 break; |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2238 case vmIntrinsics::_reverseBytes_c: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2239 push(_gvn.transform(new (C) ReverseBytesUSNode(0, pop()))); |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2240 break; |
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2241 case vmIntrinsics::_reverseBytes_s: |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2242 push(_gvn.transform(new (C) ReverseBytesSNode(0, pop()))); |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
never
parents:
1152
diff
changeset
|
2243 break; |
0 | 2244 default: |
2245 ; | |
2246 } | |
2247 return true; | |
2248 } | |
2249 | |
2250 //----------------------------inline_unsafe_access---------------------------- | |
2251 | |
2252 const static BasicType T_ADDRESS_HOLDER = T_LONG; | |
2253 | |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2254 // 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
|
2255 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
|
2256 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
|
2257 // 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
|
2258 // 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
|
2259 // 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
|
2260 // 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
|
2261 // 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
|
2262 // to prevent commoning of loads across safepoint. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2263 if (!UseG1GC && !need_mem_bar) |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2264 return; |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2265 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2266 // Some compile time checks. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2267 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2268 // 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
|
2269 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
|
2270 if (otype != NULL && otype->is_con() && |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2271 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
|
2272 // 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
|
2273 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2274 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2275 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2276 // 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
|
2277 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
|
2278 if (btype != NULL) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2279 if (btype->isa_aryptr()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2280 // Array type so nothing to do |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2281 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2282 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2283 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2284 const TypeInstPtr* itype = btype->isa_instptr(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2285 if (itype != NULL) { |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2286 // Can the klass of base_oop be statically determined to be |
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2287 // _not_ a sub-class of Reference and _not_ Object? |
3249
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|
2288 ciKlass* klass = itype->klass(); |
6615
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|
2289 if ( klass->is_loaded() && |
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|
2290 !klass->is_subtype_of(env()->Reference_klass()) && |
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|
2291 !env()->Object_klass()->is_subtype_of(klass)) { |
3249
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|
2292 return; |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2293 } |
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|
2294 } |
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|
2295 } |
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|
2296 |
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|
2297 // The compile time filters did not reject base_oop/offset so |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2298 // we need to generate the following runtime filters |
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|
2299 // |
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|
2300 // if (offset == java_lang_ref_Reference::_reference_offset) { |
6615
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|
2301 // if (instance_of(base, java.lang.ref.Reference)) { |
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|
2302 // pre_barrier(_, pre_val, ...); |
3249
e1162778c1c8
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|
2303 // } |
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|
2304 // } |
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|
2305 |
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|
2306 float likely = PROB_LIKELY(0.999); |
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|
2307 float unlikely = PROB_UNLIKELY(0.999); |
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|
2308 |
3255 | 2309 IdealKit ideal(this); |
3249
e1162778c1c8
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|
2310 #define __ ideal. |
e1162778c1c8
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|
2311 |
3254
59766fd005ff
7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
johnc
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|
2312 Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset); |
3249
e1162778c1c8
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|
2313 |
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|
2314 __ if_then(offset, BoolTest::eq, referent_off, unlikely); { |
e1162778c1c8
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|
2315 // Update graphKit memory and control from IdealKit. |
3255 | 2316 sync_kit(ideal); |
3249
e1162778c1c8
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|
2317 |
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|
2318 Node* ref_klass_con = makecon(TypeKlassPtr::make(env()->Reference_klass())); |
6615
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|
2319 _sp += nargs; // gen_instanceof might do an uncommon trap |
3249
e1162778c1c8
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|
2320 Node* is_instof = gen_instanceof(base_oop, ref_klass_con); |
6615
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|
2321 _sp -= nargs; |
3249
e1162778c1c8
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|
2322 |
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|
2323 // Update IdealKit memory and control from graphKit. |
3255 | 2324 __ sync_kit(this); |
3249
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|
2325 |
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|
2326 Node* one = __ ConI(1); |
6615
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|
2327 // is_instof == 0 if base_oop == NULL |
3249
e1162778c1c8
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|
2328 __ if_then(is_instof, BoolTest::eq, one, unlikely); { |
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|
2329 |
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|
2330 // Update graphKit from IdeakKit. |
3255 | 2331 sync_kit(ideal); |
3249
e1162778c1c8
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|
2332 |
e1162778c1c8
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|
2333 // Use the pre-barrier to record the value in the referent field |
e1162778c1c8
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|
2334 pre_barrier(false /* do_load */, |
e1162778c1c8
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|
2335 __ ctrl(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
parents:
3255
diff
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|
2336 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
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|
2337 pre_val /* pre_val */, |
e1162778c1c8
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|
2338 T_OBJECT); |
6615
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|
2339 if (need_mem_bar) { |
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|
2340 // Add memory barrier to prevent commoning reads from this field |
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|
2341 // across safepoint since GC can change its value. |
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|
2342 insert_mem_bar(Op_MemBarCPUOrder); |
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|
2343 } |
3249
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|
2344 // Update IdealKit from graphKit. |
3255 | 2345 __ sync_kit(this); |
3249
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|
2346 |
e1162778c1c8
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|
2347 } __ end_if(); // _ref_type != ref_none |
e1162778c1c8
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|
2348 } __ end_if(); // offset == referent_offset |
e1162778c1c8
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|
2349 |
e1162778c1c8
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|
2350 // Final sync IdealKit and GraphKit. |
3255 | 2351 final_sync(ideal); |
3249
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|
2352 #undef __ |
e1162778c1c8
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|
2353 } |
e1162778c1c8
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|
2354 |
e1162778c1c8
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|
2355 |
0 | 2356 // Interpret Unsafe.fieldOffset cookies correctly: |
2357 extern jlong Unsafe_field_offset_to_byte_offset(jlong field_offset); | |
2358 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
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|
2359 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2360 // Attempt to infer a sharper value type from the offset and base type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2361 ciKlass* sharpened_klass = NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
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|
2362 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2363 // See if it is an instance field, with an object type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2364 if (alias_type->field() != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2365 assert(!is_native_ptr, "native pointer op cannot use a java address"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2366 if (alias_type->field()->type()->is_klass()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2367 sharpened_klass = alias_type->field()->type()->as_klass(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2368 } |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2369 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2370 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2371 // See if it is a narrow oop array. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2372 if (adr_type->isa_aryptr()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2373 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2374 const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr(); |
7eca5de9e0b6
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2375 if (elem_type != NULL) { |
7eca5de9e0b6
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|
2376 sharpened_klass = elem_type->klass(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2377 } |
7eca5de9e0b6
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|
2378 } |
7eca5de9e0b6
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|
2379 } |
7eca5de9e0b6
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|
2380 |
6847
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
twisti
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|
2381 // The sharpened class might be unloaded if there is no class loader |
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
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6804
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|
2382 // contraint in place. |
65d07d9ee446
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6804
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|
2383 if (sharpened_klass != NULL && sharpened_klass->is_loaded()) { |
6795
7eca5de9e0b6
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|
2384 const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass); |
7eca5de9e0b6
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|
2385 |
7eca5de9e0b6
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|
2386 #ifndef PRODUCT |
7eca5de9e0b6
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|
2387 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { |
6847
65d07d9ee446
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|
2388 tty->print(" from base type: "); adr_type->dump(); |
65d07d9ee446
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|
2389 tty->print(" sharpened value: "); tjp->dump(); |
6795
7eca5de9e0b6
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|
2390 } |
7eca5de9e0b6
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|
2391 #endif |
7eca5de9e0b6
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|
2392 // Sharpen the value type. |
7eca5de9e0b6
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|
2393 return tjp; |
7eca5de9e0b6
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|
2394 } |
7eca5de9e0b6
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|
2395 return NULL; |
7eca5de9e0b6
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|
2396 } |
7eca5de9e0b6
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|
2397 |
0 | 2398 bool LibraryCallKit::inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile) { |
2399 if (callee()->is_static()) return false; // caller must have the capability! | |
2400 | |
2401 #ifndef PRODUCT | |
2402 { | |
2403 ResourceMark rm; | |
2404 // Check the signatures. | |
2405 ciSignature* sig = signature(); | |
2406 #ifdef ASSERT | |
2407 if (!is_store) { | |
2408 // Object getObject(Object base, int/long offset), etc. | |
2409 BasicType rtype = sig->return_type()->basic_type(); | |
2410 if (rtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::getAddress_name()) | |
2411 rtype = T_ADDRESS; // it is really a C void* | |
2412 assert(rtype == type, "getter must return the expected value"); | |
2413 if (!is_native_ptr) { | |
2414 assert(sig->count() == 2, "oop getter has 2 arguments"); | |
2415 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object"); | |
2416 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct"); | |
2417 } else { | |
2418 assert(sig->count() == 1, "native getter has 1 argument"); | |
2419 assert(sig->type_at(0)->basic_type() == T_LONG, "getter base is long"); | |
2420 } | |
2421 } else { | |
2422 // void putObject(Object base, int/long offset, Object x), etc. | |
2423 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value"); | |
2424 if (!is_native_ptr) { | |
2425 assert(sig->count() == 3, "oop putter has 3 arguments"); | |
2426 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object"); | |
2427 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct"); | |
2428 } else { | |
2429 assert(sig->count() == 2, "native putter has 2 arguments"); | |
2430 assert(sig->type_at(0)->basic_type() == T_LONG, "putter base is long"); | |
2431 } | |
2432 BasicType vtype = sig->type_at(sig->count()-1)->basic_type(); | |
2433 if (vtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::putAddress_name()) | |
2434 vtype = T_ADDRESS; // it is really a C void* | |
2435 assert(vtype == type, "putter must accept the expected value"); | |
2436 } | |
2437 #endif // ASSERT | |
2438 } | |
2439 #endif //PRODUCT | |
2440 | |
2441 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2442 | |
2443 int type_words = type2size[ (type == T_ADDRESS) ? T_LONG : type ]; | |
2444 | |
2445 // Argument words: "this" plus (oop/offset) or (lo/hi) args plus maybe 1 or 2 value words | |
2446 int nargs = 1 + (is_native_ptr ? 2 : 3) + (is_store ? type_words : 0); | |
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2447 assert(callee()->arg_size() == nargs, "must be"); |
0 | 2448 |
2449 debug_only(int saved_sp = _sp); | |
2450 _sp += nargs; | |
2451 | |
2452 Node* val; | |
2453 debug_only(val = (Node*)(uintptr_t)-1); | |
2454 | |
2455 | |
2456 if (is_store) { | |
2457 // Get the value being stored. (Pop it first; it was pushed last.) | |
2458 switch (type) { | |
2459 case T_DOUBLE: | |
2460 case T_LONG: | |
2461 case T_ADDRESS: | |
2462 val = pop_pair(); | |
2463 break; | |
2464 default: | |
2465 val = pop(); | |
2466 } | |
2467 } | |
2468 | |
2469 // Build address expression. See the code in inline_unsafe_prefetch. | |
2470 Node *adr; | |
2471 Node *heap_base_oop = top(); | |
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2472 Node* offset = top(); |
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2473 |
0 | 2474 if (!is_native_ptr) { |
2475 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset | |
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|
2476 offset = pop_pair(); |
0 | 2477 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
2478 Node* base = pop(); | |
2479 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2480 // to be plain byte offsets, which are also the same as those accepted | |
2481 // by oopDesc::field_base. | |
2482 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2483 "fieldOffset must be byte-scaled"); | |
2484 // 32-bit machines ignore the high half! | |
2485 offset = ConvL2X(offset); | |
2486 adr = make_unsafe_address(base, offset); | |
2487 heap_base_oop = base; | |
2488 } else { | |
2489 Node* ptr = pop_pair(); | |
2490 // Adjust Java long to machine word: | |
2491 ptr = ConvL2X(ptr); | |
2492 adr = make_unsafe_address(NULL, ptr); | |
2493 } | |
2494 | |
2495 // Pop receiver last: it was pushed first. | |
2496 Node *receiver = pop(); | |
2497 | |
2498 assert(saved_sp == _sp, "must have correct argument count"); | |
2499 | |
2500 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2501 | |
2502 // First guess at the value type. | |
2503 const Type *value_type = Type::get_const_basic_type(type); | |
2504 | |
2505 // Try to categorize the address. If it comes up as TypeJavaPtr::BOTTOM, | |
2506 // there was not enough information to nail it down. | |
2507 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2508 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
2509 | |
2510 // We will need memory barriers unless we can determine a unique | |
2511 // alias category for this reference. (Note: If for some reason | |
2512 // the barriers get omitted and the unsafe reference begins to "pollute" | |
2513 // the alias analysis of the rest of the graph, either Compile::can_alias | |
2514 // or Compile::must_alias will throw a diagnostic assert.) | |
2515 bool need_mem_bar = (alias_type->adr_type() == TypeOopPtr::BOTTOM); | |
2516 | |
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2517 // If we are reading the value of the referent field of a Reference |
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2518 // object (either by using Unsafe directly or through reflection) |
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2519 // then, if G1 is enabled, we need to record the referent in an |
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2520 // SATB log buffer using the pre-barrier mechanism. |
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2521 // Also we need to add memory barrier to prevent commoning reads |
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2522 // from this field across safepoint since GC can change its value. |
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2523 bool need_read_barrier = !is_native_ptr && !is_store && |
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2524 offset != top() && heap_base_oop != top(); |
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2525 |
0 | 2526 if (!is_store && type == T_OBJECT) { |
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2527 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type, is_native_ptr); |
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2528 if (tjp != NULL) { |
0 | 2529 value_type = tjp; |
2530 } | |
2531 } | |
2532 | |
2533 // Null check on self without removing any arguments. The argument | |
2534 // null check technically happens in the wrong place, which can lead to | |
2535 // invalid stack traces when the primitive is inlined into a method | |
2536 // which handles NullPointerExceptions. | |
2537 _sp += nargs; | |
2538 do_null_check(receiver, T_OBJECT); | |
2539 _sp -= nargs; | |
2540 if (stopped()) { | |
2541 return true; | |
2542 } | |
2543 // Heap pointers get a null-check from the interpreter, | |
2544 // as a courtesy. However, this is not guaranteed by Unsafe, | |
2545 // and it is not possible to fully distinguish unintended nulls | |
2546 // from intended ones in this API. | |
2547 | |
2548 if (is_volatile) { | |
2549 // We need to emit leading and trailing CPU membars (see below) in | |
2550 // addition to memory membars when is_volatile. This is a little | |
2551 // too strong, but avoids the need to insert per-alias-type | |
2552 // volatile membars (for stores; compare Parse::do_put_xxx), which | |
605 | 2553 // we cannot do effectively here because we probably only have a |
0 | 2554 // rough approximation of type. |
2555 need_mem_bar = true; | |
2556 // For Stores, place a memory ordering barrier now. | |
2557 if (is_store) | |
2558 insert_mem_bar(Op_MemBarRelease); | |
2559 } | |
2560 | |
2561 // Memory barrier to prevent normal and 'unsafe' accesses from | |
2562 // bypassing each other. Happens after null checks, so the | |
2563 // exception paths do not take memory state from the memory barrier, | |
2564 // so there's no problems making a strong assert about mixing users | |
2565 // of safe & unsafe memory. Otherwise fails in a CTW of rt.jar | |
2566 // around 5701, class sun/reflect/UnsafeBooleanFieldAccessorImpl. | |
2567 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2568 | |
2569 if (!is_store) { | |
2570 Node* p = make_load(control(), adr, value_type, type, adr_type, is_volatile); | |
2571 // load value and push onto stack | |
2572 switch (type) { | |
2573 case T_BOOLEAN: | |
2574 case T_CHAR: | |
2575 case T_BYTE: | |
2576 case T_SHORT: | |
2577 case T_INT: | |
2578 case T_FLOAT: | |
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2579 push(p); |
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2580 break; |
0 | 2581 case T_OBJECT: |
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2582 if (need_read_barrier) { |
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2583 insert_pre_barrier(heap_base_oop, offset, p, nargs, !(is_volatile || need_mem_bar)); |
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|
2584 } |
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|
2585 push(p); |
0 | 2586 break; |
2587 case T_ADDRESS: | |
2588 // Cast to an int type. | |
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2589 p = _gvn.transform( new (C) CastP2XNode(NULL,p) ); |
0 | 2590 p = ConvX2L(p); |
2591 push_pair(p); | |
2592 break; | |
2593 case T_DOUBLE: | |
2594 case T_LONG: | |
2595 push_pair( p ); | |
2596 break; | |
2597 default: ShouldNotReachHere(); | |
2598 } | |
2599 } else { | |
2600 // place effect of store into memory | |
2601 switch (type) { | |
2602 case T_DOUBLE: | |
2603 val = dstore_rounding(val); | |
2604 break; | |
2605 case T_ADDRESS: | |
2606 // Repackage the long as a pointer. | |
2607 val = ConvL2X(val); | |
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2608 val = _gvn.transform( new (C) CastX2PNode(val) ); |
0 | 2609 break; |
2610 } | |
2611 | |
2612 if (type != T_OBJECT ) { | |
2613 (void) store_to_memory(control(), adr, val, type, adr_type, is_volatile); | |
2614 } else { | |
2615 // Possibly an oop being stored to Java heap or native memory | |
2616 if (!TypePtr::NULL_PTR->higher_equal(_gvn.type(heap_base_oop))) { | |
2617 // oop to Java heap. | |
825 | 2618 (void) store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
0 | 2619 } else { |
2620 // We can't tell at compile time if we are storing in the Java heap or outside | |
2621 // of it. So we need to emit code to conditionally do the proper type of | |
2622 // store. | |
2623 | |
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2624 IdealKit ideal(this); |
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2625 #define __ ideal. |
0 | 2626 // QQQ who knows what probability is here?? |
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2627 __ if_then(heap_base_oop, BoolTest::ne, null(), PROB_UNLIKELY(0.999)); { |
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2628 // Sync IdealKit and graphKit. |
2444
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2629 sync_kit(ideal); |
851
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2630 Node* st = store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
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2631 // Update IdealKit memory. |
2444
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2632 __ sync_kit(this); |
851
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2633 } __ else_(); { |
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2634 __ store(__ ctrl(), adr, val, type, alias_type->index(), is_volatile); |
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2635 } __ end_if(); |
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2636 // Final sync IdealKit and GraphKit. |
2444
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2637 final_sync(ideal); |
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|
2638 #undef __ |
0 | 2639 } |
2640 } | |
2641 } | |
2642 | |
2643 if (is_volatile) { | |
2644 if (!is_store) | |
2645 insert_mem_bar(Op_MemBarAcquire); | |
2646 else | |
2647 insert_mem_bar(Op_MemBarVolatile); | |
2648 } | |
2649 | |
2650 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2651 | |
2652 return true; | |
2653 } | |
2654 | |
2655 //----------------------------inline_unsafe_prefetch---------------------------- | |
2656 | |
2657 bool LibraryCallKit::inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static) { | |
2658 #ifndef PRODUCT | |
2659 { | |
2660 ResourceMark rm; | |
2661 // Check the signatures. | |
2662 ciSignature* sig = signature(); | |
2663 #ifdef ASSERT | |
2664 // Object getObject(Object base, int/long offset), etc. | |
2665 BasicType rtype = sig->return_type()->basic_type(); | |
2666 if (!is_native_ptr) { | |
2667 assert(sig->count() == 2, "oop prefetch has 2 arguments"); | |
2668 assert(sig->type_at(0)->basic_type() == T_OBJECT, "prefetch base is object"); | |
2669 assert(sig->type_at(1)->basic_type() == T_LONG, "prefetcha offset is correct"); | |
2670 } else { | |
2671 assert(sig->count() == 1, "native prefetch has 1 argument"); | |
2672 assert(sig->type_at(0)->basic_type() == T_LONG, "prefetch base is long"); | |
2673 } | |
2674 #endif // ASSERT | |
2675 } | |
2676 #endif // !PRODUCT | |
2677 | |
2678 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2679 | |
2680 // Argument words: "this" if not static, plus (oop/offset) or (lo/hi) args | |
2681 int nargs = (is_static ? 0 : 1) + (is_native_ptr ? 2 : 3); | |
2682 | |
2683 debug_only(int saved_sp = _sp); | |
2684 _sp += nargs; | |
2685 | |
2686 // Build address expression. See the code in inline_unsafe_access. | |
2687 Node *adr; | |
2688 if (!is_native_ptr) { | |
2689 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset | |
2690 Node* offset = pop_pair(); | |
2691 // The base is either a Java object or a value produced by Unsafe.staticFieldBase | |
2692 Node* base = pop(); | |
2693 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2694 // to be plain byte offsets, which are also the same as those accepted | |
2695 // by oopDesc::field_base. | |
2696 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2697 "fieldOffset must be byte-scaled"); | |
2698 // 32-bit machines ignore the high half! | |
2699 offset = ConvL2X(offset); | |
2700 adr = make_unsafe_address(base, offset); | |
2701 } else { | |
2702 Node* ptr = pop_pair(); | |
2703 // Adjust Java long to machine word: | |
2704 ptr = ConvL2X(ptr); | |
2705 adr = make_unsafe_address(NULL, ptr); | |
2706 } | |
2707 | |
2708 if (is_static) { | |
2709 assert(saved_sp == _sp, "must have correct argument count"); | |
2710 } else { | |
2711 // Pop receiver last: it was pushed first. | |
2712 Node *receiver = pop(); | |
2713 assert(saved_sp == _sp, "must have correct argument count"); | |
2714 | |
2715 // Null check on self without removing any arguments. The argument | |
2716 // null check technically happens in the wrong place, which can lead to | |
2717 // invalid stack traces when the primitive is inlined into a method | |
2718 // which handles NullPointerExceptions. | |
2719 _sp += nargs; | |
2720 do_null_check(receiver, T_OBJECT); | |
2721 _sp -= nargs; | |
2722 if (stopped()) { | |
2723 return true; | |
2724 } | |
2725 } | |
2726 | |
2727 // Generate the read or write prefetch | |
2728 Node *prefetch; | |
2729 if (is_store) { | |
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2730 prefetch = new (C) PrefetchWriteNode(i_o(), adr); |
0 | 2731 } else { |
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2732 prefetch = new (C) PrefetchReadNode(i_o(), adr); |
0 | 2733 } |
2734 prefetch->init_req(0, control()); | |
2735 set_i_o(_gvn.transform(prefetch)); | |
2736 | |
2737 return true; | |
2738 } | |
2739 | |
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2740 //----------------------------inline_unsafe_load_store---------------------------- |
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2741 |
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2742 bool LibraryCallKit::inline_unsafe_load_store(BasicType type, LoadStoreKind kind) { |
0 | 2743 // This basic scheme here is the same as inline_unsafe_access, but |
2744 // differs in enough details that combining them would make the code | |
2745 // overly confusing. (This is a true fact! I originally combined | |
2746 // them, but even I was confused by it!) As much code/comments as | |
2747 // possible are retained from inline_unsafe_access though to make | |
605 | 2748 // the correspondences clearer. - dl |
0 | 2749 |
2750 if (callee()->is_static()) return false; // caller must have the capability! | |
2751 | |
2752 #ifndef PRODUCT | |
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|
2753 BasicType rtype; |
0 | 2754 { |
2755 ResourceMark rm; | |
2756 ciSignature* sig = signature(); | |
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2757 rtype = sig->return_type()->basic_type(); |
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2758 if (kind == LS_xadd || kind == LS_xchg) { |
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2759 // Check the signatures. |
0 | 2760 #ifdef ASSERT |
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2761 assert(rtype == type, "get and set must return the expected type"); |
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2762 assert(sig->count() == 3, "get and set has 3 arguments"); |
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2763 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object"); |
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2764 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long"); |
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2765 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta"); |
0 | 2766 #endif // ASSERT |
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2767 } else if (kind == LS_cmpxchg) { |
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|
2768 // Check the signatures. |
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|
2769 #ifdef ASSERT |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2770 assert(rtype == T_BOOLEAN, "CAS must return boolean"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2771 assert(sig->count() == 4, "CAS has 4 arguments"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2772 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2773 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2774 #endif // ASSERT |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2775 } else { |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2776 ShouldNotReachHere(); |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2777 } |
0 | 2778 } |
2779 #endif //PRODUCT | |
2780 | |
2781 // number of stack slots per value argument (1 or 2) | |
2782 int type_words = type2size[type]; | |
2783 | |
2784 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2785 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
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|
2786 // Argument words: "this" plus oop plus offset (plus oldvalue) plus newvalue/delta; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2787 int nargs = 1 + 1 + 2 + ((kind == LS_cmpxchg) ? type_words : 0) + type_words; |
7eca5de9e0b6
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|
2788 |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2789 // pop arguments: newval, offset, base, and receiver |
0 | 2790 debug_only(int saved_sp = _sp); |
2791 _sp += nargs; | |
2792 Node* newval = (type_words == 1) ? pop() : pop_pair(); | |
6795
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|
2793 Node* oldval = (kind == LS_cmpxchg) ? ((type_words == 1) ? pop() : pop_pair()) : NULL; |
0 | 2794 Node *offset = pop_pair(); |
2795 Node *base = pop(); | |
2796 Node *receiver = pop(); | |
2797 assert(saved_sp == _sp, "must have correct argument count"); | |
2798 | |
2799 // Null check receiver. | |
2800 _sp += nargs; | |
2801 do_null_check(receiver, T_OBJECT); | |
2802 _sp -= nargs; | |
2803 if (stopped()) { | |
2804 return true; | |
2805 } | |
2806 | |
2807 // Build field offset expression. | |
2808 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2809 // to be plain byte offsets, which are also the same as those accepted | |
2810 // by oopDesc::field_base. | |
2811 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2812 // 32-bit machines ignore the high half of long offsets | |
2813 offset = ConvL2X(offset); | |
2814 Node* adr = make_unsafe_address(base, offset); | |
2815 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2816 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2817 // For CAS, unlike inline_unsafe_access, there seems no point in |
7eca5de9e0b6
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|
2818 // trying to refine types. Just use the coarse types here. |
0 | 2819 const Type *value_type = Type::get_const_basic_type(type); |
2820 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2821 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2822 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2823 if (kind == LS_xchg && type == T_OBJECT) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2824 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); |
7eca5de9e0b6
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|
2825 if (tjp != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2826 value_type = tjp; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2827 } |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2828 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
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|
2829 |
0 | 2830 int alias_idx = C->get_alias_index(adr_type); |
2831 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2832 // Memory-model-wise, a LoadStore acts like a little synchronized |
7eca5de9e0b6
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6725
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|
2833 // block, so needs barriers on each side. These don't translate |
7eca5de9e0b6
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|
2834 // into actual barriers on most machines, but we still need rest of |
0 | 2835 // compiler to respect ordering. |
2836 | |
2837 insert_mem_bar(Op_MemBarRelease); | |
2838 insert_mem_bar(Op_MemBarCPUOrder); | |
2839 | |
2840 // 4984716: MemBars must be inserted before this | |
2841 // memory node in order to avoid a false | |
2842 // dependency which will confuse the scheduler. | |
2843 Node *mem = memory(alias_idx); | |
2844 | |
2845 // For now, we handle only those cases that actually exist: ints, | |
2846 // longs, and Object. Adding others should be straightforward. | |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2847 Node* load_store; |
0 | 2848 switch(type) { |
2849 case T_INT: | |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2850 if (kind == LS_xadd) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
2851 load_store = _gvn.transform(new (C) GetAndAddINode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2852 } else if (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
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|
2853 load_store = _gvn.transform(new (C) GetAndSetINode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2854 } else if (kind == LS_cmpxchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2855 load_store = _gvn.transform(new (C) CompareAndSwapINode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2856 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2857 ShouldNotReachHere(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2858 } |
0 | 2859 break; |
2860 case T_LONG: | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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parents:
6725
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|
2861 if (kind == LS_xadd) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2862 load_store = _gvn.transform(new (C) GetAndAddLNode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
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|
2863 } else if (kind == LS_xchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2864 load_store = _gvn.transform(new (C) GetAndSetLNode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2865 } else if (kind == LS_cmpxchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2866 load_store = _gvn.transform(new (C) CompareAndSwapLNode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
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|
2867 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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parents:
6725
diff
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|
2868 ShouldNotReachHere(); |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2869 } |
0 | 2870 break; |
2871 case T_OBJECT: | |
4894
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2872 // Transformation of a value which could be NULL pointer (CastPP #NULL) |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2873 // could be delayed during Parse (for example, in adjust_map_after_if()). |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2874 // Execute transformation here to avoid barrier generation in such case. |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2875 if (_gvn.type(newval) == TypePtr::NULL_PTR) |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2876 newval = _gvn.makecon(TypePtr::NULL_PTR); |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2877 |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2878 // Reference stores need a store barrier. |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2879 pre_barrier(true /* do_load*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2880 control(), base, adr, alias_idx, newval, value_type->make_oopptr(), |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2881 NULL /* pre_val*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2882 T_OBJECT); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2883 #ifdef _LP64 |
163 | 2884 if (adr->bottom_type()->is_ptr_to_narrowoop()) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2885 Node *newval_enc = _gvn.transform(new (C) EncodePNode(newval, newval->bottom_type()->make_narrowoop())); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2886 if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2887 load_store = _gvn.transform(new (C) GetAndSetNNode(control(), mem, adr, |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
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|
2888 newval_enc, adr_type, value_type->make_narrowoop())); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
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|
2889 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2890 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2891 Node *oldval_enc = _gvn.transform(new (C) EncodePNode(oldval, oldval->bottom_type()->make_narrowoop())); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2892 load_store = _gvn.transform(new (C) CompareAndSwapNNode(control(), mem, adr, |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
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|
2893 newval_enc, oldval_enc)); |
7eca5de9e0b6
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diff
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|
2894 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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34
diff
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|
2895 } else |
ba764ed4b6f2
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diff
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|
2896 #endif |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
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|
2897 { |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2898 if (kind == LS_xchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2899 load_store = _gvn.transform(new (C) GetAndSetPNode(control(), mem, adr, newval, adr_type, value_type->is_oopptr())); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
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|
2900 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2901 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
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|
2902 load_store = _gvn.transform(new (C) CompareAndSwapPNode(control(), mem, adr, newval, oldval)); |
6795
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|
2903 } |
221
1e026f8da827
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kvn
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174
diff
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|
2904 } |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
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|
2905 post_barrier(control(), load_store, base, adr, alias_idx, newval, T_OBJECT, true); |
0 | 2906 break; |
2907 default: | |
2908 ShouldNotReachHere(); | |
2909 break; | |
2910 } | |
2911 | |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2912 // SCMemProjNodes represent the memory state of a LoadStore. Their |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2913 // main role is to prevent LoadStore nodes from being optimized away |
7eca5de9e0b6
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roland
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6725
diff
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|
2914 // when their results aren't used. |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2915 Node* proj = _gvn.transform( new (C) SCMemProjNode(load_store)); |
0 | 2916 set_memory(proj, alias_idx); |
2917 | |
2918 // Add the trailing membar surrounding the access | |
2919 insert_mem_bar(Op_MemBarCPUOrder); | |
2920 insert_mem_bar(Op_MemBarAcquire); | |
2921 | |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2922 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2923 if (type == T_OBJECT && adr->bottom_type()->is_ptr_to_narrowoop() && kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2924 load_store = _gvn.transform(new (C) DecodeNNode(load_store, load_store->bottom_type()->make_ptr())); |
6795
7eca5de9e0b6
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roland
parents:
6725
diff
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|
2925 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2926 #endif |
7eca5de9e0b6
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roland
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6725
diff
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|
2927 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2928 assert(type2size[load_store->bottom_type()->basic_type()] == type2size[rtype], "result type should match"); |
7eca5de9e0b6
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|
2929 push_node(load_store->bottom_type()->basic_type(), load_store); |
0 | 2930 return true; |
2931 } | |
2932 | |
2933 bool LibraryCallKit::inline_unsafe_ordered_store(BasicType type) { | |
2934 // This is another variant of inline_unsafe_access, differing in | |
2935 // that it always issues store-store ("release") barrier and ensures | |
2936 // store-atomicity (which only matters for "long"). | |
2937 | |
2938 if (callee()->is_static()) return false; // caller must have the capability! | |
2939 | |
2940 #ifndef PRODUCT | |
2941 { | |
2942 ResourceMark rm; | |
2943 // Check the signatures. | |
2944 ciSignature* sig = signature(); | |
2945 #ifdef ASSERT | |
2946 BasicType rtype = sig->return_type()->basic_type(); | |
2947 assert(rtype == T_VOID, "must return void"); | |
2948 assert(sig->count() == 3, "has 3 arguments"); | |
2949 assert(sig->type_at(0)->basic_type() == T_OBJECT, "base is object"); | |
2950 assert(sig->type_at(1)->basic_type() == T_LONG, "offset is long"); | |
2951 #endif // ASSERT | |
2952 } | |
2953 #endif //PRODUCT | |
2954 | |
2955 // number of stack slots per value argument (1 or 2) | |
2956 int type_words = type2size[type]; | |
2957 | |
2958 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2959 | |
2960 // Argument words: "this" plus oop plus offset plus value; | |
2961 int nargs = 1 + 1 + 2 + type_words; | |
2962 | |
2963 // pop arguments: val, offset, base, and receiver | |
2964 debug_only(int saved_sp = _sp); | |
2965 _sp += nargs; | |
2966 Node* val = (type_words == 1) ? pop() : pop_pair(); | |
2967 Node *offset = pop_pair(); | |
2968 Node *base = pop(); | |
2969 Node *receiver = pop(); | |
2970 assert(saved_sp == _sp, "must have correct argument count"); | |
2971 | |
2972 // Null check receiver. | |
2973 _sp += nargs; | |
2974 do_null_check(receiver, T_OBJECT); | |
2975 _sp -= nargs; | |
2976 if (stopped()) { | |
2977 return true; | |
2978 } | |
2979 | |
2980 // Build field offset expression. | |
2981 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2982 // 32-bit machines ignore the high half of long offsets | |
2983 offset = ConvL2X(offset); | |
2984 Node* adr = make_unsafe_address(base, offset); | |
2985 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2986 const Type *value_type = Type::get_const_basic_type(type); | |
2987 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2988 | |
2989 insert_mem_bar(Op_MemBarRelease); | |
2990 insert_mem_bar(Op_MemBarCPUOrder); | |
2991 // Ensure that the store is atomic for longs: | |
2992 bool require_atomic_access = true; | |
2993 Node* store; | |
2994 if (type == T_OBJECT) // reference stores need a store barrier. | |
825 | 2995 store = store_oop_to_unknown(control(), base, adr, adr_type, val, type); |
0 | 2996 else { |
2997 store = store_to_memory(control(), adr, val, type, adr_type, require_atomic_access); | |
2998 } | |
2999 insert_mem_bar(Op_MemBarCPUOrder); | |
3000 return true; | |
3001 } | |
3002 | |
3003 bool LibraryCallKit::inline_unsafe_allocate() { | |
3004 if (callee()->is_static()) return false; // caller must have the capability! | |
3005 int nargs = 1 + 1; | |
3006 assert(signature()->size() == nargs-1, "alloc has 1 argument"); | |
3007 null_check_receiver(callee()); // check then ignore argument(0) | |
3008 _sp += nargs; // set original stack for use by uncommon_trap | |
3009 Node* cls = do_null_check(argument(1), T_OBJECT); | |
3010 _sp -= nargs; | |
3011 if (stopped()) return true; | |
3012 | |
3013 Node* kls = load_klass_from_mirror(cls, false, nargs, NULL, 0); | |
3014 _sp += nargs; // set original stack for use by uncommon_trap | |
3015 kls = do_null_check(kls, T_OBJECT); | |
3016 _sp -= nargs; | |
3017 if (stopped()) return true; // argument was like int.class | |
3018 | |
3019 // Note: The argument might still be an illegal value like | |
3020 // Serializable.class or Object[].class. The runtime will handle it. | |
3021 // But we must make an explicit check for initialization. | |
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3022 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset())); |
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3023 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler |
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3024 // can generate code to load it as unsigned byte. |
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3025 Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN); |
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3026 Node* bits = intcon(InstanceKlass::fully_initialized); |
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3027 Node* test = _gvn.transform( new (C) SubINode(inst, bits) ); |
0 | 3028 // The 'test' is non-zero if we need to take a slow path. |
3029 | |
3030 Node* obj = new_instance(kls, test); | |
3031 push(obj); | |
3032 | |
3033 return true; | |
3034 } | |
3035 | |
6006
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3036 #ifdef TRACE_HAVE_INTRINSICS |
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3037 /* |
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3038 * oop -> myklass |
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3039 * myklass->trace_id |= USED |
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|
3040 * return myklass->trace_id & ~0x3 |
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|
3041 */ |
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3042 bool LibraryCallKit::inline_native_classID() { |
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3043 int nargs = 1 + 1; |
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3044 null_check_receiver(callee()); // check then ignore argument(0) |
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3045 _sp += nargs; |
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3046 Node* cls = do_null_check(argument(1), T_OBJECT); |
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3047 _sp -= nargs; |
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3048 Node* kls = load_klass_from_mirror(cls, false, nargs, NULL, 0); |
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3049 _sp += nargs; |
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3050 kls = do_null_check(kls, T_OBJECT); |
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3051 _sp -= nargs; |
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3052 ByteSize offset = TRACE_ID_OFFSET; |
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3053 Node* insp = basic_plus_adr(kls, in_bytes(offset)); |
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3054 Node* tvalue = make_load(NULL, insp, TypeLong::LONG, T_LONG); |
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3055 Node* bits = longcon(~0x03l); // ignore bit 0 & 1 |
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3056 Node* andl = _gvn.transform(new (C) AndLNode(tvalue, bits)); |
6006
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3057 Node* clsused = longcon(0x01l); // set the class bit |
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3058 Node* orl = _gvn.transform(new (C) OrLNode(tvalue, clsused)); |
6006
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3059 |
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3060 const TypePtr *adr_type = _gvn.type(insp)->isa_ptr(); |
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3061 store_to_memory(control(), insp, orl, T_LONG, adr_type); |
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|
3062 push_pair(andl); |
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|
3063 return true; |
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|
3064 } |
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|
3065 |
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3066 bool LibraryCallKit::inline_native_threadID() { |
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|
3067 Node* tls_ptr = NULL; |
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3068 Node* cur_thr = generate_current_thread(tls_ptr); |
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3069 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); |
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3070 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); |
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3071 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::thread_id_offset())); |
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|
3072 |
0105f367a14c
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3073 Node* threadid = NULL; |
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3074 size_t thread_id_size = OSThread::thread_id_size(); |
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3075 if (thread_id_size == (size_t) BytesPerLong) { |
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3076 threadid = ConvL2I(make_load(control(), p, TypeLong::LONG, T_LONG)); |
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|
3077 push(threadid); |
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|
3078 } else if (thread_id_size == (size_t) BytesPerInt) { |
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3079 threadid = make_load(control(), p, TypeInt::INT, T_INT); |
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|
3080 push(threadid); |
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|
3081 } else { |
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|
3082 ShouldNotReachHere(); |
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|
3083 } |
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|
3084 return true; |
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|
3085 } |
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|
3086 #endif |
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|
3087 |
0 | 3088 //------------------------inline_native_time_funcs-------------- |
3089 // inline code for System.currentTimeMillis() and System.nanoTime() | |
3090 // these have the same type and signature | |
6006
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3091 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) { |
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|
3092 const TypeFunc *tf = OptoRuntime::void_long_Type(); |
0 | 3093 const TypePtr* no_memory_effects = NULL; |
3094 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects); | |
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3095 Node* value = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+0)); |
0 | 3096 #ifdef ASSERT |
6804
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3097 Node* value_top = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms + 1)); |
0 | 3098 assert(value_top == top(), "second value must be top"); |
3099 #endif | |
3100 push_pair(value); | |
3101 return true; | |
3102 } | |
3103 | |
3104 //------------------------inline_native_currentThread------------------ | |
3105 bool LibraryCallKit::inline_native_currentThread() { | |
3106 Node* junk = NULL; | |
3107 push(generate_current_thread(junk)); | |
3108 return true; | |
3109 } | |
3110 | |
3111 //------------------------inline_native_isInterrupted------------------ | |
3112 bool LibraryCallKit::inline_native_isInterrupted() { | |
3113 const int nargs = 1+1; // receiver + boolean | |
3114 assert(nargs == arg_size(), "sanity"); | |
3115 // Add a fast path to t.isInterrupted(clear_int): | |
3116 // (t == Thread.current() && (!TLS._osthread._interrupted || !clear_int)) | |
3117 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) | |
3118 // So, in the common case that the interrupt bit is false, | |
3119 // we avoid making a call into the VM. Even if the interrupt bit | |
3120 // is true, if the clear_int argument is false, we avoid the VM call. | |
3121 // However, if the receiver is not currentThread, we must call the VM, | |
3122 // because there must be some locking done around the operation. | |
3123 | |
3124 // We only go to the fast case code if we pass two guards. | |
3125 // Paths which do not pass are accumulated in the slow_region. | |
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3126 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3127 record_for_igvn(slow_region); |
6804
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3128 RegionNode* result_rgn = new (C) RegionNode(1+3); // fast1, fast2, slow |
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3129 PhiNode* result_val = new (C) PhiNode(result_rgn, TypeInt::BOOL); |
0 | 3130 enum { no_int_result_path = 1, |
3131 no_clear_result_path = 2, | |
3132 slow_result_path = 3 | |
3133 }; | |
3134 | |
3135 // (a) Receiving thread must be the current thread. | |
3136 Node* rec_thr = argument(0); | |
3137 Node* tls_ptr = NULL; | |
3138 Node* cur_thr = generate_current_thread(tls_ptr); | |
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3139 Node* cmp_thr = _gvn.transform( new (C) CmpPNode(cur_thr, rec_thr) ); |
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3140 Node* bol_thr = _gvn.transform( new (C) BoolNode(cmp_thr, BoolTest::ne) ); |
0 | 3141 |
3142 bool known_current_thread = (_gvn.type(bol_thr) == TypeInt::ZERO); | |
3143 if (!known_current_thread) | |
3144 generate_slow_guard(bol_thr, slow_region); | |
3145 | |
3146 // (b) Interrupt bit on TLS must be false. | |
3147 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); | |
3148 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); | |
3149 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::interrupted_offset())); | |
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3150 // Set the control input on the field _interrupted read to prevent it floating up. |
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3151 Node* int_bit = make_load(control(), p, TypeInt::BOOL, T_INT); |
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3152 Node* cmp_bit = _gvn.transform( new (C) CmpINode(int_bit, intcon(0)) ); |
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3153 Node* bol_bit = _gvn.transform( new (C) BoolNode(cmp_bit, BoolTest::ne) ); |
0 | 3154 |
3155 IfNode* iff_bit = create_and_map_if(control(), bol_bit, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); | |
3156 | |
3157 // First fast path: if (!TLS._interrupted) return false; | |
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3158 Node* false_bit = _gvn.transform( new (C) IfFalseNode(iff_bit) ); |
0 | 3159 result_rgn->init_req(no_int_result_path, false_bit); |
3160 result_val->init_req(no_int_result_path, intcon(0)); | |
3161 | |
3162 // drop through to next case | |
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3163 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit)) ); |
0 | 3164 |
3165 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. | |
3166 Node* clr_arg = argument(1); | |
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3167 Node* cmp_arg = _gvn.transform( new (C) CmpINode(clr_arg, intcon(0)) ); |
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3168 Node* bol_arg = _gvn.transform( new (C) BoolNode(cmp_arg, BoolTest::ne) ); |
0 | 3169 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); |
3170 | |
3171 // Second fast path: ... else if (!clear_int) return true; | |
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3172 Node* false_arg = _gvn.transform( new (C) IfFalseNode(iff_arg) ); |
0 | 3173 result_rgn->init_req(no_clear_result_path, false_arg); |
3174 result_val->init_req(no_clear_result_path, intcon(1)); | |
3175 | |
3176 // drop through to next case | |
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3177 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg)) ); |
0 | 3178 |
3179 // (d) Otherwise, go to the slow path. | |
3180 slow_region->add_req(control()); | |
3181 set_control( _gvn.transform(slow_region) ); | |
3182 | |
3183 if (stopped()) { | |
3184 // There is no slow path. | |
3185 result_rgn->init_req(slow_result_path, top()); | |
3186 result_val->init_req(slow_result_path, top()); | |
3187 } else { | |
3188 // non-virtual because it is a private non-static | |
3189 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_isInterrupted); | |
3190 | |
3191 Node* slow_val = set_results_for_java_call(slow_call); | |
3192 // this->control() comes from set_results_for_java_call | |
3193 | |
3194 // If we know that the result of the slow call will be true, tell the optimizer! | |
3195 if (known_current_thread) slow_val = intcon(1); | |
3196 | |
3197 Node* fast_io = slow_call->in(TypeFunc::I_O); | |
3198 Node* fast_mem = slow_call->in(TypeFunc::Memory); | |
3199 // These two phis are pre-filled with copies of of the fast IO and Memory | |
3200 Node* io_phi = PhiNode::make(result_rgn, fast_io, Type::ABIO); | |
3201 Node* mem_phi = PhiNode::make(result_rgn, fast_mem, Type::MEMORY, TypePtr::BOTTOM); | |
3202 | |
3203 result_rgn->init_req(slow_result_path, control()); | |
3204 io_phi ->init_req(slow_result_path, i_o()); | |
3205 mem_phi ->init_req(slow_result_path, reset_memory()); | |
3206 result_val->init_req(slow_result_path, slow_val); | |
3207 | |
3208 set_all_memory( _gvn.transform(mem_phi) ); | |
3209 set_i_o( _gvn.transform(io_phi) ); | |
3210 } | |
3211 | |
3212 push_result(result_rgn, result_val); | |
3213 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3214 | |
3215 return true; | |
3216 } | |
3217 | |
3218 //---------------------------load_mirror_from_klass---------------------------- | |
3219 // Given a klass oop, load its java mirror (a java.lang.Class oop). | |
3220 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) { | |
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3221 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset())); |
0 | 3222 return make_load(NULL, p, TypeInstPtr::MIRROR, T_OBJECT); |
3223 } | |
3224 | |
3225 //-----------------------load_klass_from_mirror_common------------------------- | |
3226 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop. | |
3227 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE), | |
3228 // and branch to the given path on the region. | |
3229 // If never_see_null, take an uncommon trap on null, so we can optimistically | |
3230 // compile for the non-null case. | |
3231 // If the region is NULL, force never_see_null = true. | |
3232 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror, | |
3233 bool never_see_null, | |
3234 int nargs, | |
3235 RegionNode* region, | |
3236 int null_path, | |
3237 int offset) { | |
3238 if (region == NULL) never_see_null = true; | |
3239 Node* p = basic_plus_adr(mirror, offset); | |
3240 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
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3241 Node* kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type) ); |
0 | 3242 _sp += nargs; // any deopt will start just before call to enclosing method |
3243 Node* null_ctl = top(); | |
3244 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3245 if (region != NULL) { | |
3246 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class). | |
3247 region->init_req(null_path, null_ctl); | |
3248 } else { | |
3249 assert(null_ctl == top(), "no loose ends"); | |
3250 } | |
3251 _sp -= nargs; | |
3252 return kls; | |
3253 } | |
3254 | |
3255 //--------------------(inline_native_Class_query helpers)--------------------- | |
3256 // Use this for JVM_ACC_INTERFACE, JVM_ACC_IS_CLONEABLE, JVM_ACC_HAS_FINALIZER. | |
3257 // Fall through if (mods & mask) == bits, take the guard otherwise. | |
3258 Node* LibraryCallKit::generate_access_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) { | |
3259 // Branch around if the given klass has the given modifier bit set. | |
3260 // Like generate_guard, adds a new path onto the region. | |
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3261 Node* modp = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3262 Node* mods = make_load(NULL, modp, TypeInt::INT, T_INT); |
3263 Node* mask = intcon(modifier_mask); | |
3264 Node* bits = intcon(modifier_bits); | |
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3265 Node* mbit = _gvn.transform( new (C) AndINode(mods, mask) ); |
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3266 Node* cmp = _gvn.transform( new (C) CmpINode(mbit, bits) ); |
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3267 Node* bol = _gvn.transform( new (C) BoolNode(cmp, BoolTest::ne) ); |
0 | 3268 return generate_fair_guard(bol, region); |
3269 } | |
3270 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) { | |
3271 return generate_access_flags_guard(kls, JVM_ACC_INTERFACE, 0, region); | |
3272 } | |
3273 | |
3274 //-------------------------inline_native_Class_query------------------- | |
3275 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) { | |
3276 int nargs = 1+0; // just the Class mirror, in most cases | |
3277 const Type* return_type = TypeInt::BOOL; | |
3278 Node* prim_return_value = top(); // what happens if it's a primitive class? | |
3279 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3280 bool expect_prim = false; // most of these guys expect to work on refs | |
3281 | |
3282 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT }; | |
3283 | |
3284 switch (id) { | |
3285 case vmIntrinsics::_isInstance: | |
3286 nargs = 1+1; // the Class mirror, plus the object getting queried about | |
3287 // nothing is an instance of a primitive type | |
3288 prim_return_value = intcon(0); | |
3289 break; | |
3290 case vmIntrinsics::_getModifiers: | |
3291 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3292 assert(is_power_of_2((int)JVM_ACC_WRITTEN_FLAGS+1), "change next line"); | |
3293 return_type = TypeInt::make(0, JVM_ACC_WRITTEN_FLAGS, Type::WidenMin); | |
3294 break; | |
3295 case vmIntrinsics::_isInterface: | |
3296 prim_return_value = intcon(0); | |
3297 break; | |
3298 case vmIntrinsics::_isArray: | |
3299 prim_return_value = intcon(0); | |
3300 expect_prim = true; // cf. ObjectStreamClass.getClassSignature | |
3301 break; | |
3302 case vmIntrinsics::_isPrimitive: | |
3303 prim_return_value = intcon(1); | |
3304 expect_prim = true; // obviously | |
3305 break; | |
3306 case vmIntrinsics::_getSuperclass: | |
3307 prim_return_value = null(); | |
3308 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3309 break; | |
3310 case vmIntrinsics::_getComponentType: | |
3311 prim_return_value = null(); | |
3312 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3313 break; | |
3314 case vmIntrinsics::_getClassAccessFlags: | |
3315 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3316 return_type = TypeInt::INT; // not bool! 6297094 | |
3317 break; | |
3318 default: | |
3319 ShouldNotReachHere(); | |
3320 } | |
3321 | |
3322 Node* mirror = argument(0); | |
3323 Node* obj = (nargs <= 1)? top(): argument(1); | |
3324 | |
3325 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); | |
3326 if (mirror_con == NULL) return false; // cannot happen? | |
3327 | |
3328 #ifndef PRODUCT | |
3329 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { | |
3330 ciType* k = mirror_con->java_mirror_type(); | |
3331 if (k) { | |
3332 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id())); | |
3333 k->print_name(); | |
3334 tty->cr(); | |
3335 } | |
3336 } | |
3337 #endif | |
3338 | |
3339 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive). | |
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3340 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
0 | 3341 record_for_igvn(region); |
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3342 PhiNode* phi = new (C) PhiNode(region, return_type); |
0 | 3343 |
3344 // The mirror will never be null of Reflection.getClassAccessFlags, however | |
3345 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE | |
3346 // if it is. See bug 4774291. | |
3347 | |
3348 // For Reflection.getClassAccessFlags(), the null check occurs in | |
3349 // the wrong place; see inline_unsafe_access(), above, for a similar | |
3350 // situation. | |
3351 _sp += nargs; // set original stack for use by uncommon_trap | |
3352 mirror = do_null_check(mirror, T_OBJECT); | |
3353 _sp -= nargs; | |
3354 // If mirror or obj is dead, only null-path is taken. | |
3355 if (stopped()) return true; | |
3356 | |
3357 if (expect_prim) never_see_null = false; // expect nulls (meaning prims) | |
3358 | |
3359 // Now load the mirror's klass metaobject, and null-check it. | |
3360 // Side-effects region with the control path if the klass is null. | |
3361 Node* kls = load_klass_from_mirror(mirror, never_see_null, nargs, | |
3362 region, _prim_path); | |
3363 // If kls is null, we have a primitive mirror. | |
3364 phi->init_req(_prim_path, prim_return_value); | |
3365 if (stopped()) { push_result(region, phi); return true; } | |
3366 | |
3367 Node* p; // handy temp | |
3368 Node* null_ctl; | |
3369 | |
3370 // Now that we have the non-null klass, we can perform the real query. | |
3371 // For constant classes, the query will constant-fold in LoadNode::Value. | |
3372 Node* query_value = top(); | |
3373 switch (id) { | |
3374 case vmIntrinsics::_isInstance: | |
3375 // nothing is an instance of a primitive type | |
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3376 _sp += nargs; // gen_instanceof might do an uncommon trap |
0 | 3377 query_value = gen_instanceof(obj, kls); |
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3378 _sp -= nargs; |
0 | 3379 break; |
3380 | |
3381 case vmIntrinsics::_getModifiers: | |
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3382 p = basic_plus_adr(kls, in_bytes(Klass::modifier_flags_offset())); |
0 | 3383 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3384 break; | |
3385 | |
3386 case vmIntrinsics::_isInterface: | |
3387 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3388 if (generate_interface_guard(kls, region) != NULL) | |
3389 // A guard was added. If the guard is taken, it was an interface. | |
3390 phi->add_req(intcon(1)); | |
3391 // If we fall through, it's a plain class. | |
3392 query_value = intcon(0); | |
3393 break; | |
3394 | |
3395 case vmIntrinsics::_isArray: | |
3396 // (To verify this code sequence, check the asserts in JVM_IsArrayClass.) | |
3397 if (generate_array_guard(kls, region) != NULL) | |
3398 // A guard was added. If the guard is taken, it was an array. | |
3399 phi->add_req(intcon(1)); | |
3400 // If we fall through, it's a plain class. | |
3401 query_value = intcon(0); | |
3402 break; | |
3403 | |
3404 case vmIntrinsics::_isPrimitive: | |
3405 query_value = intcon(0); // "normal" path produces false | |
3406 break; | |
3407 | |
3408 case vmIntrinsics::_getSuperclass: | |
3409 // The rules here are somewhat unfortunate, but we can still do better | |
3410 // with random logic than with a JNI call. | |
3411 // Interfaces store null or Object as _super, but must report null. | |
3412 // Arrays store an intermediate super as _super, but must report Object. | |
3413 // Other types can report the actual _super. | |
3414 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3415 if (generate_interface_guard(kls, region) != NULL) | |
3416 // A guard was added. If the guard is taken, it was an interface. | |
3417 phi->add_req(null()); | |
3418 if (generate_array_guard(kls, region) != NULL) | |
3419 // A guard was added. If the guard is taken, it was an array. | |
3420 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror()))); | |
3421 // If we fall through, it's a plain class. Get its _super. | |
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3422 p = basic_plus_adr(kls, in_bytes(Klass::super_offset())); |
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3423 kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeKlassPtr::OBJECT_OR_NULL) ); |
0 | 3424 null_ctl = top(); |
3425 kls = null_check_oop(kls, &null_ctl); | |
3426 if (null_ctl != top()) { | |
3427 // If the guard is taken, Object.superClass is null (both klass and mirror). | |
3428 region->add_req(null_ctl); | |
3429 phi ->add_req(null()); | |
3430 } | |
3431 if (!stopped()) { | |
3432 query_value = load_mirror_from_klass(kls); | |
3433 } | |
3434 break; | |
3435 | |
3436 case vmIntrinsics::_getComponentType: | |
3437 if (generate_array_guard(kls, region) != NULL) { | |
3438 // Be sure to pin the oop load to the guard edge just created: | |
3439 Node* is_array_ctrl = region->in(region->req()-1); | |
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3440 Node* cma = basic_plus_adr(kls, in_bytes(ArrayKlass::component_mirror_offset())); |
0 | 3441 Node* cmo = make_load(is_array_ctrl, cma, TypeInstPtr::MIRROR, T_OBJECT); |
3442 phi->add_req(cmo); | |
3443 } | |
3444 query_value = null(); // non-array case is null | |
3445 break; | |
3446 | |
3447 case vmIntrinsics::_getClassAccessFlags: | |
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3448 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3449 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3450 break; | |
3451 | |
3452 default: | |
3453 ShouldNotReachHere(); | |
3454 } | |
3455 | |
3456 // Fall-through is the normal case of a query to a real class. | |
3457 phi->init_req(1, query_value); | |
3458 region->init_req(1, control()); | |
3459 | |
3460 push_result(region, phi); | |
3461 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3462 | |
3463 return true; | |
3464 } | |
3465 | |
3466 //--------------------------inline_native_subtype_check------------------------ | |
3467 // This intrinsic takes the JNI calls out of the heart of | |
3468 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc. | |
3469 bool LibraryCallKit::inline_native_subtype_check() { | |
3470 int nargs = 1+1; // the Class mirror, plus the other class getting examined | |
3471 | |
3472 // Pull both arguments off the stack. | |
3473 Node* args[2]; // two java.lang.Class mirrors: superc, subc | |
3474 args[0] = argument(0); | |
3475 args[1] = argument(1); | |
3476 Node* klasses[2]; // corresponding Klasses: superk, subk | |
3477 klasses[0] = klasses[1] = top(); | |
3478 | |
3479 enum { | |
3480 // A full decision tree on {superc is prim, subc is prim}: | |
3481 _prim_0_path = 1, // {P,N} => false | |
3482 // {P,P} & superc!=subc => false | |
3483 _prim_same_path, // {P,P} & superc==subc => true | |
3484 _prim_1_path, // {N,P} => false | |
3485 _ref_subtype_path, // {N,N} & subtype check wins => true | |
3486 _both_ref_path, // {N,N} & subtype check loses => false | |
3487 PATH_LIMIT | |
3488 }; | |
3489 | |
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3490 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
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3491 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
0 | 3492 record_for_igvn(region); |
3493 | |
3494 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads | |
3495 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
3496 int class_klass_offset = java_lang_Class::klass_offset_in_bytes(); | |
3497 | |
3498 // First null-check both mirrors and load each mirror's klass metaobject. | |
3499 int which_arg; | |
3500 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3501 Node* arg = args[which_arg]; | |
3502 _sp += nargs; // set original stack for use by uncommon_trap | |
3503 arg = do_null_check(arg, T_OBJECT); | |
3504 _sp -= nargs; | |
3505 if (stopped()) break; | |
3506 args[which_arg] = _gvn.transform(arg); | |
3507 | |
3508 Node* p = basic_plus_adr(arg, class_klass_offset); | |
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3509 Node* kls = LoadKlassNode::make(_gvn, immutable_memory(), p, adr_type, kls_type); |
0 | 3510 klasses[which_arg] = _gvn.transform(kls); |
3511 } | |
3512 | |
3513 // Having loaded both klasses, test each for null. | |
3514 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3515 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3516 Node* kls = klasses[which_arg]; | |
3517 Node* null_ctl = top(); | |
3518 _sp += nargs; // set original stack for use by uncommon_trap | |
3519 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3520 _sp -= nargs; | |
3521 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path); | |
3522 region->init_req(prim_path, null_ctl); | |
3523 if (stopped()) break; | |
3524 klasses[which_arg] = kls; | |
3525 } | |
3526 | |
3527 if (!stopped()) { | |
3528 // now we have two reference types, in klasses[0..1] | |
3529 Node* subk = klasses[1]; // the argument to isAssignableFrom | |
3530 Node* superk = klasses[0]; // the receiver | |
3531 region->set_req(_both_ref_path, gen_subtype_check(subk, superk)); | |
3532 // now we have a successful reference subtype check | |
3533 region->set_req(_ref_subtype_path, control()); | |
3534 } | |
3535 | |
3536 // If both operands are primitive (both klasses null), then | |
3537 // we must return true when they are identical primitives. | |
3538 // It is convenient to test this after the first null klass check. | |
3539 set_control(region->in(_prim_0_path)); // go back to first null check | |
3540 if (!stopped()) { | |
3541 // Since superc is primitive, make a guard for the superc==subc case. | |
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3542 Node* cmp_eq = _gvn.transform( new (C) CmpPNode(args[0], args[1]) ); |
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3543 Node* bol_eq = _gvn.transform( new (C) BoolNode(cmp_eq, BoolTest::eq) ); |
0 | 3544 generate_guard(bol_eq, region, PROB_FAIR); |
3545 if (region->req() == PATH_LIMIT+1) { | |
3546 // A guard was added. If the added guard is taken, superc==subc. | |
3547 region->swap_edges(PATH_LIMIT, _prim_same_path); | |
3548 region->del_req(PATH_LIMIT); | |
3549 } | |
3550 region->set_req(_prim_0_path, control()); // Not equal after all. | |
3551 } | |
3552 | |
3553 // these are the only paths that produce 'true': | |
3554 phi->set_req(_prim_same_path, intcon(1)); | |
3555 phi->set_req(_ref_subtype_path, intcon(1)); | |
3556 | |
3557 // pull together the cases: | |
3558 assert(region->req() == PATH_LIMIT, "sane region"); | |
3559 for (uint i = 1; i < region->req(); i++) { | |
3560 Node* ctl = region->in(i); | |
3561 if (ctl == NULL || ctl == top()) { | |
3562 region->set_req(i, top()); | |
3563 phi ->set_req(i, top()); | |
3564 } else if (phi->in(i) == NULL) { | |
3565 phi->set_req(i, intcon(0)); // all other paths produce 'false' | |
3566 } | |
3567 } | |
3568 | |
3569 set_control(_gvn.transform(region)); | |
3570 push(_gvn.transform(phi)); | |
3571 | |
3572 return true; | |
3573 } | |
3574 | |
3575 //---------------------generate_array_guard_common------------------------ | |
3576 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region, | |
3577 bool obj_array, bool not_array) { | |
3578 // If obj_array/non_array==false/false: | |
3579 // Branch around if the given klass is in fact an array (either obj or prim). | |
3580 // If obj_array/non_array==false/true: | |
3581 // Branch around if the given klass is not an array klass of any kind. | |
3582 // If obj_array/non_array==true/true: | |
3583 // Branch around if the kls is not an oop array (kls is int[], String, etc.) | |
3584 // If obj_array/non_array==true/false: | |
3585 // Branch around if the kls is an oop array (Object[] or subtype) | |
3586 // | |
3587 // Like generate_guard, adds a new path onto the region. | |
3588 jint layout_con = 0; | |
3589 Node* layout_val = get_layout_helper(kls, layout_con); | |
3590 if (layout_val == NULL) { | |
3591 bool query = (obj_array | |
3592 ? Klass::layout_helper_is_objArray(layout_con) | |
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3593 : Klass::layout_helper_is_array(layout_con)); |
0 | 3594 if (query == not_array) { |
3595 return NULL; // never a branch | |
3596 } else { // always a branch | |
3597 Node* always_branch = control(); | |
3598 if (region != NULL) | |
3599 region->add_req(always_branch); | |
3600 set_control(top()); | |
3601 return always_branch; | |
3602 } | |
3603 } | |
3604 // Now test the correct condition. | |
3605 jint nval = (obj_array | |
3606 ? ((jint)Klass::_lh_array_tag_type_value | |
3607 << Klass::_lh_array_tag_shift) | |
3608 : Klass::_lh_neutral_value); | |
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3609 Node* cmp = _gvn.transform( new(C) CmpINode(layout_val, intcon(nval)) ); |
0 | 3610 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array |
3611 // invert the test if we are looking for a non-array | |
3612 if (not_array) btest = BoolTest(btest).negate(); | |
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3613 Node* bol = _gvn.transform( new(C) BoolNode(cmp, btest) ); |
0 | 3614 return generate_fair_guard(bol, region); |
3615 } | |
3616 | |
3617 | |
3618 //-----------------------inline_native_newArray-------------------------- | |
3619 bool LibraryCallKit::inline_native_newArray() { | |
3620 int nargs = 2; | |
3621 Node* mirror = argument(0); | |
3622 Node* count_val = argument(1); | |
3623 | |
3624 _sp += nargs; // set original stack for use by uncommon_trap | |
3625 mirror = do_null_check(mirror, T_OBJECT); | |
3626 _sp -= nargs; | |
163 | 3627 // If mirror or obj is dead, only null-path is taken. |
3628 if (stopped()) return true; | |
0 | 3629 |
3630 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT }; | |
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3631 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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3632 PhiNode* result_val = new(C) PhiNode(result_reg, |
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3633 TypeInstPtr::NOTNULL); |
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3634 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3635 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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3636 TypePtr::BOTTOM); |
0 | 3637 |
3638 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3639 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null, | |
3640 nargs, | |
3641 result_reg, _slow_path); | |
3642 Node* normal_ctl = control(); | |
3643 Node* no_array_ctl = result_reg->in(_slow_path); | |
3644 | |
3645 // Generate code for the slow case. We make a call to newArray(). | |
3646 set_control(no_array_ctl); | |
3647 if (!stopped()) { | |
3648 // Either the input type is void.class, or else the | |
3649 // array klass has not yet been cached. Either the | |
3650 // ensuing call will throw an exception, or else it | |
3651 // will cache the array klass for next time. | |
3652 PreserveJVMState pjvms(this); | |
3653 CallJavaNode* slow_call = generate_method_call_static(vmIntrinsics::_newArray); | |
3654 Node* slow_result = set_results_for_java_call(slow_call); | |
3655 // this->control() comes from set_results_for_java_call | |
3656 result_reg->set_req(_slow_path, control()); | |
3657 result_val->set_req(_slow_path, slow_result); | |
3658 result_io ->set_req(_slow_path, i_o()); | |
3659 result_mem->set_req(_slow_path, reset_memory()); | |
3660 } | |
3661 | |
3662 set_control(normal_ctl); | |
3663 if (!stopped()) { | |
3664 // Normal case: The array type has been cached in the java.lang.Class. | |
3665 // The following call works fine even if the array type is polymorphic. | |
3666 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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3667 Node* obj = new_array(klass_node, count_val, nargs); |
0 | 3668 result_reg->init_req(_normal_path, control()); |
3669 result_val->init_req(_normal_path, obj); | |
3670 result_io ->init_req(_normal_path, i_o()); | |
3671 result_mem->init_req(_normal_path, reset_memory()); | |
3672 } | |
3673 | |
3674 // Return the combined state. | |
3675 set_i_o( _gvn.transform(result_io) ); | |
3676 set_all_memory( _gvn.transform(result_mem) ); | |
3677 push_result(result_reg, result_val); | |
3678 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3679 | |
3680 return true; | |
3681 } | |
3682 | |
3683 //----------------------inline_native_getLength-------------------------- | |
3684 bool LibraryCallKit::inline_native_getLength() { | |
3685 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3686 | |
3687 int nargs = 1; | |
3688 Node* array = argument(0); | |
3689 | |
3690 _sp += nargs; // set original stack for use by uncommon_trap | |
3691 array = do_null_check(array, T_OBJECT); | |
3692 _sp -= nargs; | |
3693 | |
3694 // If array is dead, only null-path is taken. | |
3695 if (stopped()) return true; | |
3696 | |
3697 // Deoptimize if it is a non-array. | |
3698 Node* non_array = generate_non_array_guard(load_object_klass(array), NULL); | |
3699 | |
3700 if (non_array != NULL) { | |
3701 PreserveJVMState pjvms(this); | |
3702 set_control(non_array); | |
3703 _sp += nargs; // push the arguments back on the stack | |
3704 uncommon_trap(Deoptimization::Reason_intrinsic, | |
3705 Deoptimization::Action_maybe_recompile); | |
3706 } | |
3707 | |
3708 // If control is dead, only non-array-path is taken. | |
3709 if (stopped()) return true; | |
3710 | |
3711 // The works fine even if the array type is polymorphic. | |
3712 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
3713 push( load_array_length(array) ); | |
3714 | |
3715 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3716 | |
3717 return true; | |
3718 } | |
3719 | |
3720 //------------------------inline_array_copyOf---------------------------- | |
3721 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) { | |
3722 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3723 | |
3724 // Restore the stack and pop off the arguments. | |
3725 int nargs = 3 + (is_copyOfRange? 1: 0); | |
3726 Node* original = argument(0); | |
3727 Node* start = is_copyOfRange? argument(1): intcon(0); | |
3728 Node* end = is_copyOfRange? argument(2): argument(1); | |
3729 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2); | |
3730 | |
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3731 Node* newcopy; |
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3732 |
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3733 //set the original stack and the reexecute bit for the interpreter to reexecute |
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3734 //the bytecode that invokes Arrays.copyOf if deoptimization happens |
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3735 { PreserveReexecuteState preexecs(this); |
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3736 _sp += nargs; |
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3737 jvms()->set_should_reexecute(true); |
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3738 |
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3739 array_type_mirror = do_null_check(array_type_mirror, T_OBJECT); |
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3740 original = do_null_check(original, T_OBJECT); |
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3741 |
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3742 // Check if a null path was taken unconditionally. |
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3743 if (stopped()) return true; |
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3744 |
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3745 Node* orig_length = load_array_length(original); |
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3746 |
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3747 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, 0, |
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3748 NULL, 0); |
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3749 klass_node = do_null_check(klass_node, T_OBJECT); |
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3750 |
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3751 RegionNode* bailout = new (C) RegionNode(1); |
902
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3752 record_for_igvn(bailout); |
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|
3753 |
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3754 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc. |
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3755 // Bail out if that is so. |
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3756 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout); |
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3757 if (not_objArray != NULL) { |
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3758 // Improve the klass node's type from the new optimistic assumption: |
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3759 ciKlass* ak = ciArrayKlass::make(env()->Object_klass()); |
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3760 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/); |
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3761 Node* cast = new (C) CastPPNode(klass_node, akls); |
902
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|
3762 cast->init_req(0, control()); |
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|
3763 klass_node = _gvn.transform(cast); |
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|
3764 } |
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|
3765 |
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3766 // Bail out if either start or end is negative. |
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3767 generate_negative_guard(start, bailout, &start); |
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3768 generate_negative_guard(end, bailout, &end); |
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|
3769 |
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|
3770 Node* length = end; |
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|
3771 if (_gvn.type(start) != TypeInt::ZERO) { |
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3772 length = _gvn.transform( new (C) SubINode(end, start) ); |
902
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|
3773 } |
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|
3774 |
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|
3775 // Bail out if length is negative. |
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3776 // Without this the new_array would throw |
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3777 // NegativeArraySizeException but IllegalArgumentException is what |
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3778 // should be thrown |
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|
3779 generate_negative_guard(length, bailout, &length); |
902
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|
3780 |
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|
3781 if (bailout->req() > 1) { |
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|
3782 PreserveJVMState pjvms(this); |
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|
3783 set_control( _gvn.transform(bailout) ); |
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|
3784 uncommon_trap(Deoptimization::Reason_intrinsic, |
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|
3785 Deoptimization::Action_maybe_recompile); |
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|
3786 } |
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|
3787 |
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|
3788 if (!stopped()) { |
900
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|
3789 |
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|
3790 // How many elements will we copy from the original? |
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|
3791 // The answer is MinI(orig_length - start, length). |
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|
3792 Node* orig_tail = _gvn.transform( new(C) SubINode(orig_length, start) ); |
900
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|
3793 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); |
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|
3794 |
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|
3795 newcopy = new_array(klass_node, length, 0); |
900
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|
3796 |
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changeset
|
3797 // Generate a direct call to the right arraycopy function(s). |
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|
3798 // We know the copy is disjoint but we might not know if the |
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|
3799 // oop stores need checking. |
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|
3800 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). |
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|
3801 // This will fail a store-check if x contains any non-nulls. |
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|
3802 bool disjoint_bases = true; |
6180
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|
3803 // if start > orig_length then the length of the copy may be |
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3804 // negative. |
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3805 bool length_never_negative = !is_copyOfRange; |
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3806 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
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3807 original, start, newcopy, intcon(0), moved, |
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3808 disjoint_bases, length_never_negative); |
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3809 } |
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3810 } //original reexecute and sp are set back here |
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3811 |
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3812 if(!stopped()) { |
0 | 3813 push(newcopy); |
3814 } | |
3815 | |
3816 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
3817 | |
3818 return true; | |
3819 } | |
3820 | |
3821 | |
3822 //----------------------generate_virtual_guard--------------------------- | |
3823 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call. | |
3824 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass, | |
3825 RegionNode* slow_region) { | |
3826 ciMethod* method = callee(); | |
3827 int vtable_index = method->vtable_index(); | |
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3828 // Get the Method* out of the appropriate vtable entry. |
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3829 int entry_offset = (InstanceKlass::vtable_start_offset() + |
0 | 3830 vtable_index*vtableEntry::size()) * wordSize + |
3831 vtableEntry::method_offset_in_bytes(); | |
3832 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset); | |
3833 Node* target_call = make_load(NULL, entry_addr, TypeInstPtr::NOTNULL, T_OBJECT); | |
3834 | |
3835 // Compare the target method with the expected method (e.g., Object.hashCode). | |
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3836 const TypePtr* native_call_addr = TypeMetadataPtr::make(method); |
0 | 3837 |
3838 Node* native_call = makecon(native_call_addr); | |
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3839 Node* chk_native = _gvn.transform( new(C) CmpPNode(target_call, native_call) ); |
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3840 Node* test_native = _gvn.transform( new(C) BoolNode(chk_native, BoolTest::ne) ); |
0 | 3841 |
3842 return generate_slow_guard(test_native, slow_region); | |
3843 } | |
3844 | |
3845 //-----------------------generate_method_call---------------------------- | |
3846 // Use generate_method_call to make a slow-call to the real | |
3847 // method if the fast path fails. An alternative would be to | |
3848 // use a stub like OptoRuntime::slow_arraycopy_Java. | |
3849 // This only works for expanding the current library call, | |
3850 // not another intrinsic. (E.g., don't use this for making an | |
3851 // arraycopy call inside of the copyOf intrinsic.) | |
3852 CallJavaNode* | |
3853 LibraryCallKit::generate_method_call(vmIntrinsics::ID method_id, bool is_virtual, bool is_static) { | |
3854 // When compiling the intrinsic method itself, do not use this technique. | |
3855 guarantee(callee() != C->method(), "cannot make slow-call to self"); | |
3856 | |
3857 ciMethod* method = callee(); | |
3858 // ensure the JVMS we have will be correct for this call | |
3859 guarantee(method_id == method->intrinsic_id(), "must match"); | |
3860 | |
3861 const TypeFunc* tf = TypeFunc::make(method); | |
3862 CallJavaNode* slow_call; | |
3863 if (is_static) { | |
3864 assert(!is_virtual, ""); | |
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3865 slow_call = new(C) CallStaticJavaNode(tf, |
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3866 SharedRuntime::get_resolve_static_call_stub(), |
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3867 method, bci()); |
0 | 3868 } else if (is_virtual) { |
3869 null_check_receiver(method); | |
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3870 int vtable_index = Method::invalid_vtable_index; |
0 | 3871 if (UseInlineCaches) { |
3872 // Suppress the vtable call | |
3873 } else { | |
3874 // hashCode and clone are not a miranda methods, | |
3875 // so the vtable index is fixed. | |
3876 // No need to use the linkResolver to get it. | |
3877 vtable_index = method->vtable_index(); | |
3878 } | |
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3879 slow_call = new(C) CallDynamicJavaNode(tf, |
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3880 SharedRuntime::get_resolve_virtual_call_stub(), |
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3881 method, vtable_index, bci()); |
0 | 3882 } else { // neither virtual nor static: opt_virtual |
3883 null_check_receiver(method); | |
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3884 slow_call = new(C) CallStaticJavaNode(tf, |
0 | 3885 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
3886 method, bci()); | |
3887 slow_call->set_optimized_virtual(true); | |
3888 } | |
3889 set_arguments_for_java_call(slow_call); | |
3890 set_edges_for_java_call(slow_call); | |
3891 return slow_call; | |
3892 } | |
3893 | |
3894 | |
3895 //------------------------------inline_native_hashcode-------------------- | |
3896 // Build special case code for calls to hashCode on an object. | |
3897 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) { | |
3898 assert(is_static == callee()->is_static(), "correct intrinsic selection"); | |
3899 assert(!(is_virtual && is_static), "either virtual, special, or static"); | |
3900 | |
3901 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT }; | |
3902 | |
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3903 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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3904 PhiNode* result_val = new(C) PhiNode(result_reg, |
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3905 TypeInt::INT); |
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3906 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3907 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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3908 TypePtr::BOTTOM); |
0 | 3909 Node* obj = NULL; |
3910 if (!is_static) { | |
3911 // Check for hashing null object | |
3912 obj = null_check_receiver(callee()); | |
3913 if (stopped()) return true; // unconditionally null | |
3914 result_reg->init_req(_null_path, top()); | |
3915 result_val->init_req(_null_path, top()); | |
3916 } else { | |
3917 // Do a null check, and return zero if null. | |
3918 // System.identityHashCode(null) == 0 | |
3919 obj = argument(0); | |
3920 Node* null_ctl = top(); | |
3921 obj = null_check_oop(obj, &null_ctl); | |
3922 result_reg->init_req(_null_path, null_ctl); | |
3923 result_val->init_req(_null_path, _gvn.intcon(0)); | |
3924 } | |
3925 | |
3926 // Unconditionally null? Then return right away. | |
3927 if (stopped()) { | |
3928 set_control( result_reg->in(_null_path) ); | |
3929 if (!stopped()) | |
3930 push( result_val ->in(_null_path) ); | |
3931 return true; | |
3932 } | |
3933 | |
3934 // After null check, get the object's klass. | |
3935 Node* obj_klass = load_object_klass(obj); | |
3936 | |
3937 // This call may be virtual (invokevirtual) or bound (invokespecial). | |
3938 // For each case we generate slightly different code. | |
3939 | |
3940 // We only go to the fast case code if we pass a number of guards. The | |
3941 // paths which do not pass are accumulated in the slow_region. | |
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3942 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3943 record_for_igvn(slow_region); |
3944 | |
3945 // If this is a virtual call, we generate a funny guard. We pull out | |
3946 // the vtable entry corresponding to hashCode() from the target object. | |
3947 // If the target method which we are calling happens to be the native | |
3948 // Object hashCode() method, we pass the guard. We do not need this | |
3949 // guard for non-virtual calls -- the caller is known to be the native | |
3950 // Object hashCode(). | |
3951 if (is_virtual) { | |
3952 generate_virtual_guard(obj_klass, slow_region); | |
3953 } | |
3954 | |
3955 // Get the header out of the object, use LoadMarkNode when available | |
3956 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes()); | |
1609 | 3957 Node* header = make_load(control(), header_addr, TypeX_X, TypeX_X->basic_type()); |
0 | 3958 |
3959 // Test the header to see if it is unlocked. | |
3960 Node *lock_mask = _gvn.MakeConX(markOopDesc::biased_lock_mask_in_place); | |
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3961 Node *lmasked_header = _gvn.transform( new (C) AndXNode(header, lock_mask) ); |
0 | 3962 Node *unlocked_val = _gvn.MakeConX(markOopDesc::unlocked_value); |
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3963 Node *chk_unlocked = _gvn.transform( new (C) CmpXNode( lmasked_header, unlocked_val)); |
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3964 Node *test_unlocked = _gvn.transform( new (C) BoolNode( chk_unlocked, BoolTest::ne) ); |
0 | 3965 |
3966 generate_slow_guard(test_unlocked, slow_region); | |
3967 | |
3968 // Get the hash value and check to see that it has been properly assigned. | |
3969 // We depend on hash_mask being at most 32 bits and avoid the use of | |
3970 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit | |
3971 // vm: see markOop.hpp. | |
3972 Node *hash_mask = _gvn.intcon(markOopDesc::hash_mask); | |
3973 Node *hash_shift = _gvn.intcon(markOopDesc::hash_shift); | |
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3974 Node *hshifted_header= _gvn.transform( new (C) URShiftXNode(header, hash_shift) ); |
0 | 3975 // This hack lets the hash bits live anywhere in the mark object now, as long |
605 | 3976 // as the shift drops the relevant bits into the low 32 bits. Note that |
0 | 3977 // Java spec says that HashCode is an int so there's no point in capturing |
3978 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build). | |
3979 hshifted_header = ConvX2I(hshifted_header); | |
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3980 Node *hash_val = _gvn.transform( new (C) AndINode(hshifted_header, hash_mask) ); |
0 | 3981 |
3982 Node *no_hash_val = _gvn.intcon(markOopDesc::no_hash); | |
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3983 Node *chk_assigned = _gvn.transform( new (C) CmpINode( hash_val, no_hash_val)); |
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3984 Node *test_assigned = _gvn.transform( new (C) BoolNode( chk_assigned, BoolTest::eq) ); |
0 | 3985 |
3986 generate_slow_guard(test_assigned, slow_region); | |
3987 | |
3988 Node* init_mem = reset_memory(); | |
3989 // fill in the rest of the null path: | |
3990 result_io ->init_req(_null_path, i_o()); | |
3991 result_mem->init_req(_null_path, init_mem); | |
3992 | |
3993 result_val->init_req(_fast_path, hash_val); | |
3994 result_reg->init_req(_fast_path, control()); | |
3995 result_io ->init_req(_fast_path, i_o()); | |
3996 result_mem->init_req(_fast_path, init_mem); | |
3997 | |
3998 // Generate code for the slow case. We make a call to hashCode(). | |
3999 set_control(_gvn.transform(slow_region)); | |
4000 if (!stopped()) { | |
4001 // No need for PreserveJVMState, because we're using up the present state. | |
4002 set_all_memory(init_mem); | |
4003 vmIntrinsics::ID hashCode_id = vmIntrinsics::_hashCode; | |
4004 if (is_static) hashCode_id = vmIntrinsics::_identityHashCode; | |
4005 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static); | |
4006 Node* slow_result = set_results_for_java_call(slow_call); | |
4007 // this->control() comes from set_results_for_java_call | |
4008 result_reg->init_req(_slow_path, control()); | |
4009 result_val->init_req(_slow_path, slow_result); | |
4010 result_io ->set_req(_slow_path, i_o()); | |
4011 result_mem ->set_req(_slow_path, reset_memory()); | |
4012 } | |
4013 | |
4014 // Return the combined state. | |
4015 set_i_o( _gvn.transform(result_io) ); | |
4016 set_all_memory( _gvn.transform(result_mem) ); | |
4017 push_result(result_reg, result_val); | |
4018 | |
4019 return true; | |
4020 } | |
4021 | |
4022 //---------------------------inline_native_getClass---------------------------- | |
605 | 4023 // Build special case code for calls to getClass on an object. |
0 | 4024 bool LibraryCallKit::inline_native_getClass() { |
4025 Node* obj = null_check_receiver(callee()); | |
4026 if (stopped()) return true; | |
4027 push( load_mirror_from_klass(load_object_klass(obj)) ); | |
4028 return true; | |
4029 } | |
4030 | |
4031 //-----------------inline_native_Reflection_getCallerClass--------------------- | |
4032 // In the presence of deep enough inlining, getCallerClass() becomes a no-op. | |
4033 // | |
4034 // NOTE that this code must perform the same logic as | |
4035 // vframeStream::security_get_caller_frame in that it must skip | |
4036 // Method.invoke() and auxiliary frames. | |
4037 | |
4038 | |
4039 | |
4040 | |
4041 bool LibraryCallKit::inline_native_Reflection_getCallerClass() { | |
4042 ciMethod* method = callee(); | |
4043 | |
4044 #ifndef PRODUCT | |
4045 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4046 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass"); | |
4047 } | |
4048 #endif | |
4049 | |
4050 debug_only(int saved_sp = _sp); | |
4051 | |
4052 // Argument words: (int depth) | |
4053 int nargs = 1; | |
4054 | |
4055 _sp += nargs; | |
4056 Node* caller_depth_node = pop(); | |
4057 | |
4058 assert(saved_sp == _sp, "must have correct argument count"); | |
4059 | |
4060 // The depth value must be a constant in order for the runtime call | |
4061 // to be eliminated. | |
4062 const TypeInt* caller_depth_type = _gvn.type(caller_depth_node)->isa_int(); | |
4063 if (caller_depth_type == NULL || !caller_depth_type->is_con()) { | |
4064 #ifndef PRODUCT | |
4065 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4066 tty->print_cr(" Bailing out because caller depth was not a constant"); | |
4067 } | |
4068 #endif | |
4069 return false; | |
4070 } | |
4071 // Note that the JVM state at this point does not include the | |
4072 // getCallerClass() frame which we are trying to inline. The | |
4073 // semantics of getCallerClass(), however, are that the "first" | |
4074 // frame is the getCallerClass() frame, so we subtract one from the | |
4075 // requested depth before continuing. We don't inline requests of | |
4076 // getCallerClass(0). | |
4077 int caller_depth = caller_depth_type->get_con() - 1; | |
4078 if (caller_depth < 0) { | |
4079 #ifndef PRODUCT | |
4080 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4081 tty->print_cr(" Bailing out because caller depth was %d", caller_depth); | |
4082 } | |
4083 #endif | |
4084 return false; | |
4085 } | |
4086 | |
4087 if (!jvms()->has_method()) { | |
4088 #ifndef PRODUCT | |
4089 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4090 tty->print_cr(" Bailing out because intrinsic was inlined at top level"); | |
4091 } | |
4092 #endif | |
4093 return false; | |
4094 } | |
4095 int _depth = jvms()->depth(); // cache call chain depth | |
4096 | |
4097 // Walk back up the JVM state to find the caller at the required | |
4098 // depth. NOTE that this code must perform the same logic as | |
4099 // vframeStream::security_get_caller_frame in that it must skip | |
4100 // Method.invoke() and auxiliary frames. Note also that depth is | |
4101 // 1-based (1 is the bottom of the inlining). | |
4102 int inlining_depth = _depth; | |
4103 JVMState* caller_jvms = NULL; | |
4104 | |
4105 if (inlining_depth > 0) { | |
4106 caller_jvms = jvms(); | |
4107 assert(caller_jvms = jvms()->of_depth(inlining_depth), "inlining_depth == our depth"); | |
4108 do { | |
4109 // The following if-tests should be performed in this order | |
4110 if (is_method_invoke_or_aux_frame(caller_jvms)) { | |
4111 // Skip a Method.invoke() or auxiliary frame | |
4112 } else if (caller_depth > 0) { | |
4113 // Skip real frame | |
4114 --caller_depth; | |
4115 } else { | |
4116 // We're done: reached desired caller after skipping. | |
4117 break; | |
4118 } | |
4119 caller_jvms = caller_jvms->caller(); | |
4120 --inlining_depth; | |
4121 } while (inlining_depth > 0); | |
4122 } | |
4123 | |
4124 if (inlining_depth == 0) { | |
4125 #ifndef PRODUCT | |
4126 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4127 tty->print_cr(" Bailing out because caller depth (%d) exceeded inlining depth (%d)", caller_depth_type->get_con(), _depth); | |
4128 tty->print_cr(" JVM state at this point:"); | |
4129 for (int i = _depth; i >= 1; i--) { | |
4130 tty->print_cr(" %d) %s", i, jvms()->of_depth(i)->method()->name()->as_utf8()); | |
4131 } | |
4132 } | |
4133 #endif | |
4134 return false; // Reached end of inlining | |
4135 } | |
4136 | |
4137 // Acquire method holder as java.lang.Class | |
4138 ciInstanceKlass* caller_klass = caller_jvms->method()->holder(); | |
4139 ciInstance* caller_mirror = caller_klass->java_mirror(); | |
4140 // Push this as a constant | |
4141 push(makecon(TypeInstPtr::make(caller_mirror))); | |
4142 #ifndef PRODUCT | |
4143 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
4144 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); | |
4145 tty->print_cr(" JVM state at this point:"); | |
4146 for (int i = _depth; i >= 1; i--) { | |
4147 tty->print_cr(" %d) %s", i, jvms()->of_depth(i)->method()->name()->as_utf8()); | |
4148 } | |
4149 } | |
4150 #endif | |
4151 return true; | |
4152 } | |
4153 | |
4154 // Helper routine for above | |
4155 bool LibraryCallKit::is_method_invoke_or_aux_frame(JVMState* jvms) { | |
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4156 ciMethod* method = jvms->method(); |
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4157 |
0 | 4158 // Is this the Method.invoke method itself? |
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diff
changeset
|
4159 if (method->intrinsic_id() == vmIntrinsics::_invoke) |
0 | 4160 return true; |
4161 | |
4162 // 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
|
4163 ciKlass* k = method->holder(); |
0 | 4164 if (k->is_instance_klass()) { |
4165 ciInstanceKlass* ik = k->as_instance_klass(); | |
4166 for (; ik != NULL; ik = ik->super()) { | |
4167 if (ik->name() == ciSymbol::sun_reflect_MethodAccessorImpl() && | |
4168 ik == env()->find_system_klass(ik->name())) { | |
4169 return true; | |
4170 } | |
4171 } | |
4172 } | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6205
diff
changeset
|
4173 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
|
4174 method->is_compiled_lambda_form()) { |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1027
diff
changeset
|
4175 // 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
|
4176 return true; |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
parents:
1027
diff
changeset
|
4177 } |
0 | 4178 |
4179 return false; | |
4180 } | |
4181 | |
4182 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) { | |
4183 // restore the arguments | |
4184 _sp += arg_size(); | |
4185 | |
4186 switch (id) { | |
4187 case vmIntrinsics::_floatToRawIntBits: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4188 push(_gvn.transform( new (C) MoveF2INode(pop()))); |
0 | 4189 break; |
4190 | |
4191 case vmIntrinsics::_intBitsToFloat: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4192 push(_gvn.transform( new (C) MoveI2FNode(pop()))); |
0 | 4193 break; |
4194 | |
4195 case vmIntrinsics::_doubleToRawLongBits: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4196 push_pair(_gvn.transform( new (C) MoveD2LNode(pop_pair()))); |
0 | 4197 break; |
4198 | |
4199 case vmIntrinsics::_longBitsToDouble: | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4200 push_pair(_gvn.transform( new (C) MoveL2DNode(pop_pair()))); |
0 | 4201 break; |
4202 | |
4203 case vmIntrinsics::_doubleToLongBits: { | |
4204 Node* value = pop_pair(); | |
4205 | |
4206 // 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
|
4207 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4208 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
|
4209 |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4210 Node *cmpisnan = _gvn.transform( new (C) CmpDNode(value, value)); |
0 | 4211 // Build the boolean node |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4212 Node *bolisnan = _gvn.transform( new (C) BoolNode( cmpisnan, BoolTest::ne ) ); |
0 | 4213 |
4214 // Branch either way. | |
4215 // NaN case is less traveled, which makes all the difference. | |
4216 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4217 Node *opt_isnan = _gvn.transform(ifisnan); | |
4218 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4219 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
|
4220 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4221 |
4222 set_control(iftrue); | |
4223 | |
4224 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
4225 Node *slow_result = longcon(nan_bits); // return NaN | |
4226 phi->init_req(1, _gvn.transform( slow_result )); | |
4227 r->init_req(1, iftrue); | |
4228 | |
4229 // Else fall through | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4230 Node *iffalse = _gvn.transform( new (C) IfFalseNode(opt_ifisnan) ); |
0 | 4231 set_control(iffalse); |
4232 | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4233 phi->init_req(2, _gvn.transform( new (C) MoveD2LNode(value))); |
0 | 4234 r->init_req(2, iffalse); |
4235 | |
4236 // Post merge | |
4237 set_control(_gvn.transform(r)); | |
4238 record_for_igvn(r); | |
4239 | |
4240 Node* result = _gvn.transform(phi); | |
4241 assert(result->bottom_type()->isa_long(), "must be"); | |
4242 push_pair(result); | |
4243 | |
4244 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
4245 | |
4246 break; | |
4247 } | |
4248 | |
4249 case vmIntrinsics::_floatToIntBits: { | |
4250 Node* value = pop(); | |
4251 | |
4252 // 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
|
4253 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4254 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
|
4255 |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4256 Node *cmpisnan = _gvn.transform( new (C) CmpFNode(value, value)); |
0 | 4257 // Build the boolean node |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4258 Node *bolisnan = _gvn.transform( new (C) BoolNode( cmpisnan, BoolTest::ne ) ); |
0 | 4259 |
4260 // Branch either way. | |
4261 // NaN case is less traveled, which makes all the difference. | |
4262 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4263 Node *opt_isnan = _gvn.transform(ifisnan); | |
4264 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4265 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
|
4266 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4267 |
4268 set_control(iftrue); | |
4269 | |
4270 static const jint nan_bits = 0x7fc00000; | |
4271 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN | |
4272 phi->init_req(1, _gvn.transform( slow_result )); | |
4273 r->init_req(1, iftrue); | |
4274 | |
4275 // Else fall through | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4276 Node *iffalse = _gvn.transform( new (C) IfFalseNode(opt_ifisnan) ); |
0 | 4277 set_control(iffalse); |
4278 | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4279 phi->init_req(2, _gvn.transform( new (C) MoveF2INode(value))); |
0 | 4280 r->init_req(2, iffalse); |
4281 | |
4282 // Post merge | |
4283 set_control(_gvn.transform(r)); | |
4284 record_for_igvn(r); | |
4285 | |
4286 Node* result = _gvn.transform(phi); | |
4287 assert(result->bottom_type()->isa_int(), "must be"); | |
4288 push(result); | |
4289 | |
4290 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
4291 | |
4292 break; | |
4293 } | |
4294 | |
4295 default: | |
4296 ShouldNotReachHere(); | |
4297 } | |
4298 | |
4299 return true; | |
4300 } | |
4301 | |
4302 #ifdef _LP64 | |
4303 #define XTOP ,top() /*additional argument*/ | |
4304 #else //_LP64 | |
4305 #define XTOP /*no additional argument*/ | |
4306 #endif //_LP64 | |
4307 | |
4308 //----------------------inline_unsafe_copyMemory------------------------- | |
4309 bool LibraryCallKit::inline_unsafe_copyMemory() { | |
4310 if (callee()->is_static()) return false; // caller must have the capability! | |
4311 int nargs = 1 + 5 + 3; // 5 args: (src: ptr,off, dst: ptr,off, size) | |
4312 assert(signature()->size() == nargs-1, "copy has 5 arguments"); | |
4313 null_check_receiver(callee()); // check then ignore argument(0) | |
4314 if (stopped()) return true; | |
4315 | |
4316 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
4317 | |
4318 Node* src_ptr = argument(1); | |
4319 Node* src_off = ConvL2X(argument(2)); | |
4320 assert(argument(3)->is_top(), "2nd half of long"); | |
4321 Node* dst_ptr = argument(4); | |
4322 Node* dst_off = ConvL2X(argument(5)); | |
4323 assert(argument(6)->is_top(), "2nd half of long"); | |
4324 Node* size = ConvL2X(argument(7)); | |
4325 assert(argument(8)->is_top(), "2nd half of long"); | |
4326 | |
4327 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
4328 "fieldOffset must be byte-scaled"); | |
4329 | |
4330 Node* src = make_unsafe_address(src_ptr, src_off); | |
4331 Node* dst = make_unsafe_address(dst_ptr, dst_off); | |
4332 | |
4333 // Conservatively insert a memory barrier on all memory slices. | |
4334 // Do not let writes of the copy source or destination float below the copy. | |
4335 insert_mem_bar(Op_MemBarCPUOrder); | |
4336 | |
4337 // Call it. Note that the length argument is not scaled. | |
4338 make_runtime_call(RC_LEAF|RC_NO_FP, | |
4339 OptoRuntime::fast_arraycopy_Type(), | |
4340 StubRoutines::unsafe_arraycopy(), | |
4341 "unsafe_arraycopy", | |
4342 TypeRawPtr::BOTTOM, | |
4343 src, dst, size XTOP); | |
4344 | |
4345 // Do not let reads of the copy destination float above the copy. | |
4346 insert_mem_bar(Op_MemBarCPUOrder); | |
4347 | |
4348 return true; | |
4349 } | |
4350 | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4351 //------------------------clone_coping----------------------------------- |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4352 // 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
|
4353 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
|
4354 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
|
4355 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
|
4356 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
|
4357 |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4358 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
|
4359 if (ReduceBulkZeroing) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4360 // 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
|
4361 // mark Initialize node as complete. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4362 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
|
4363 // 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
|
4364 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
|
4365 // 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
|
4366 // 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
|
4367 // 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
|
4368 alloc->initialization()->set_complete_with_arraycopy(); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4369 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4370 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4371 // Copy the fastest available way. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4372 // 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
parents:
827
diff
changeset
|
4373 Node* src = obj; |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4374 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
|
4375 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
|
4376 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4377 // 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
|
4378 // 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
|
4379 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
|
4380 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
|
4381 // base_off: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4382 // 8 - 32-bit VM |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4383 // 12 - 64-bit VM, compressed klass |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4384 // 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
|
4385 if (base_off % BytesPerLong != 0) { |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6847
diff
changeset
|
4386 assert(UseCompressedKlassPointers, ""); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4387 if (is_array) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4388 // 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
|
4389 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
|
4390 } else { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4391 // 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
|
4392 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
|
4393 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4394 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
|
4395 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4396 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
|
4397 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
|
4398 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4399 // 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
|
4400 Node* countx = size; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4401 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
|
4402 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
|
4403 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4404 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
|
4405 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
|
4406 generate_unchecked_arraycopy(raw_adr_type, T_LONG, disjoint_bases, |
2324 | 4407 src, NULL, dest, NULL, countx, |
4408 /*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
|
4409 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4410 // 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
|
4411 if (card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4412 assert(!is_array, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4413 // 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
|
4414 // 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
|
4415 // 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
|
4416 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
|
4417 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
|
4418 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
|
4419 post_barrier(control(), |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4420 memory(raw_adr_type), |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4421 alloc_obj, |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4422 no_particular_field, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4423 raw_adr_idx, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4424 no_particular_value, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4425 T_OBJECT, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4426 false); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4427 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4428 |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4429 // 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
|
4430 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4431 // 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
|
4432 // 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
|
4433 // other threads. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4434 // 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
|
4435 // 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
|
4436 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4437 // 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
|
4438 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
|
4439 } else { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4440 insert_mem_bar(Op_MemBarCPUOrder); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4441 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4442 } |
0 | 4443 |
4444 //------------------------inline_native_clone---------------------------- | |
4445 // Here are the simple edge cases: | |
4446 // null receiver => normal trap | |
4447 // virtual and clone was overridden => slow path to out-of-line clone | |
4448 // not cloneable or finalizer => slow path to out-of-line Object.clone | |
4449 // | |
4450 // The general case has two steps, allocation and copying. | |
4451 // Allocation has two cases, and uses GraphKit::new_instance or new_array. | |
4452 // | |
4453 // Copying also has two cases, oop arrays and everything else. | |
4454 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy). | |
4455 // Everything else uses the tight inline loop supplied by CopyArrayNode. | |
4456 // | |
4457 // These steps fold up nicely if and when the cloned object's klass | |
4458 // can be sharply typed as an object array, a type array, or an instance. | |
4459 // | |
4460 bool LibraryCallKit::inline_native_clone(bool is_virtual) { | |
4461 int nargs = 1; | |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4462 PhiNode* result_val; |
0 | 4463 |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4464 //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
|
4465 //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
|
4466 { PreserveReexecuteState preexecs(this); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4467 jvms()->set_should_reexecute(true); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4468 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4469 //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
|
4470 Node* obj = null_check_receiver(callee()); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4471 if (stopped()) return true; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4472 |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4473 _sp += nargs; |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4474 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4475 Node* obj_klass = load_object_klass(obj); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4476 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
|
4477 const TypeOopPtr* toop = ((tklass != NULL) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4478 ? tklass->as_instance_type() |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4479 : TypeInstPtr::NOTNULL); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4480 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4481 // 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
|
4482 // 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
|
4483 insert_mem_bar(Op_MemBarCPUOrder); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4484 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4485 // paths into result_reg: |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4486 enum { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4487 _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
|
4488 _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
|
4489 _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
|
4490 _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
|
4491 PATH_LIMIT |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4492 }; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4493 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
|
4494 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
|
4495 TypeInstPtr::NOTNULL); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4496 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
|
4497 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
|
4498 TypePtr::BOTTOM); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4499 record_for_igvn(result_reg); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4500 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4501 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4502 int raw_adr_idx = Compile::AliasIdxRaw; |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4503 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4504 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
|
4505 if (array_ctl != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4506 // It's an array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4507 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4508 set_control(array_ctl); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4509 Node* obj_length = load_array_length(obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4510 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
|
4511 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &obj_size); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4512 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4513 if (!use_ReduceInitialCardMarks()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4514 // If it is an oop array, it requires very special treatment, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4515 // because card marking is required on each card of the array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4516 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4517 if (is_obja != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4518 PreserveJVMState pjvms2(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4519 set_control(is_obja); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4520 // Generate a direct call to the right arraycopy function(s). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4521 bool disjoint_bases = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4522 bool length_never_negative = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4523 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4524 obj, intcon(0), alloc_obj, intcon(0), |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4525 obj_length, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4526 disjoint_bases, length_never_negative); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4527 result_reg->init_req(_objArray_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4528 result_val->init_req(_objArray_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4529 result_i_o ->set_req(_objArray_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4530 result_mem ->set_req(_objArray_path, reset_memory()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4531 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4532 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
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|
4533 // Otherwise, there are no card marks to worry about. |
1027
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6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
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|
4534 // (We can dispense with card marks if we know the allocation |
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diff
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|
4535 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks |
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6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
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diff
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|
4536 // causes the non-eden paths to take compensating steps to |
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6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
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diff
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|
4537 // simulate a fresh allocation, so that no further |
39b01ab7035a
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986
diff
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|
4538 // card marks are required in compiled code to initialize |
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diff
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|
4539 // the object.) |
900
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4540 |
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|
4541 if (!stopped()) { |
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diff
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|
4542 copy_to_clone(obj, alloc_obj, obj_size, true, false); |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4543 |
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diff
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|
4544 // Present the results of the copy. |
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|
4545 result_reg->init_req(_array_path, control()); |
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|
4546 result_val->init_req(_array_path, alloc_obj); |
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|
4547 result_i_o ->set_req(_array_path, i_o()); |
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|
4548 result_mem ->set_req(_array_path, reset_memory()); |
0 | 4549 } |
4550 } | |
900
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|
4551 |
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cfang
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diff
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|
4552 // We only go to the instance fast case code if we pass a number of guards. |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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|
4553 // The paths which do not pass are accumulated in the slow_region. |
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7193318: C2: remove number of inputs requirement from Node's new operator
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diff
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|
4554 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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|
4555 record_for_igvn(slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4556 if (!stopped()) { |
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|
4557 // It's an instance (we did array above). Make the slow-path tests. |
9987d9d5eb0e
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diff
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|
4558 // If this is a virtual call, we generate a funny guard. We grab |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4559 // the vtable entry corresponding to clone() from the target object. |
9987d9d5eb0e
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cfang
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|
4560 // If the target method which we are calling happens to be the |
9987d9d5eb0e
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cfang
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diff
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|
4561 // Object clone() method, we pass the guard. We do not need this |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4562 // guard for non-virtual calls; the caller is known to be the native |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4563 // Object clone(). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4564 if (is_virtual) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4565 generate_virtual_guard(obj_klass, slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4566 } |
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cfang
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|
4567 |
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|
4568 // The object must be cloneable and must not have a finalizer. |
9987d9d5eb0e
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cfang
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diff
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|
4569 // Both of these conditions may be checked in a single test. |
9987d9d5eb0e
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cfang
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diff
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|
4570 // We could optimize the cloneable test further, but we don't care. |
9987d9d5eb0e
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cfang
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diff
changeset
|
4571 generate_access_flags_guard(obj_klass, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4572 // Test both conditions: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4573 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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|
4574 // Must be cloneable but not finalizer: |
9987d9d5eb0e
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cfang
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diff
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|
4575 JVM_ACC_IS_CLONEABLE, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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|
4576 slow_region); |
9987d9d5eb0e
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|
4577 } |
833
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|
4578 |
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6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
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|
4579 if (!stopped()) { |
900
9987d9d5eb0e
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cfang
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diff
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|
4580 // It's an instance, and it passed the slow-path tests. |
9987d9d5eb0e
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cfang
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changeset
|
4581 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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|
4582 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
|
4583 Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size); |
900
9987d9d5eb0e
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diff
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|
4584 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4585 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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diff
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|
4586 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4587 // Present the results of the slow call. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4588 result_reg->init_req(_instance_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4589 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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diff
changeset
|
4590 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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diff
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|
4591 result_mem ->set_req(_instance_path, reset_memory()); |
0 | 4592 } |
4593 | |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4594 // 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
|
4595 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
|
4596 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4597 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4598 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
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|
4599 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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diff
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|
4600 // 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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diff
changeset
|
4601 result_reg->init_req(_slow_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4602 result_val->init_req(_slow_path, slow_result); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4603 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
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|
4604 result_mem ->set_req(_slow_path, reset_memory()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4605 } |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4606 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4607 // Return the combined state. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
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900
diff
changeset
|
4608 set_control( _gvn.transform(result_reg) ); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4609 set_i_o( _gvn.transform(result_i_o) ); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4610 set_all_memory( _gvn.transform(result_mem) ); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4611 } //original reexecute and sp are set back here |
0 | 4612 |
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
|
4613 push(_gvn.transform(result_val)); |
0 | 4614 |
4615 return true; | |
4616 } | |
4617 | |
4618 //------------------------------basictype2arraycopy---------------------------- | |
4619 address LibraryCallKit::basictype2arraycopy(BasicType t, | |
4620 Node* src_offset, | |
4621 Node* dest_offset, | |
4622 bool disjoint_bases, | |
2324 | 4623 const char* &name, |
4624 bool dest_uninitialized) { | |
0 | 4625 const TypeInt* src_offset_inttype = gvn().find_int_type(src_offset);; |
4626 const TypeInt* dest_offset_inttype = gvn().find_int_type(dest_offset);; | |
4627 | |
4628 bool aligned = false; | |
4629 bool disjoint = disjoint_bases; | |
4630 | |
4631 // if the offsets are the same, we can treat the memory regions as | |
4632 // disjoint, because either the memory regions are in different arrays, | |
4633 // or they are identical (which we can treat as disjoint.) We can also | |
4634 // treat a copy with a destination index less that the source index | |
4635 // as disjoint since a low->high copy will work correctly in this case. | |
4636 if (src_offset_inttype != NULL && src_offset_inttype->is_con() && | |
4637 dest_offset_inttype != NULL && dest_offset_inttype->is_con()) { | |
4638 // both indices are constants | |
4639 int s_offs = src_offset_inttype->get_con(); | |
4640 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
|
4641 int element_size = type2aelembytes(t); |
0 | 4642 aligned = ((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && |
4643 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0); | |
4644 if (s_offs >= d_offs) disjoint = true; | |
4645 } else if (src_offset == dest_offset && src_offset != NULL) { | |
4646 // This can occur if the offsets are identical non-constants. | |
4647 disjoint = true; | |
4648 } | |
4649 | |
2446 | 4650 return StubRoutines::select_arraycopy_function(t, aligned, disjoint, name, dest_uninitialized); |
0 | 4651 } |
4652 | |
4653 | |
4654 //------------------------------inline_arraycopy----------------------- | |
4655 bool LibraryCallKit::inline_arraycopy() { | |
4656 // Restore the stack and pop off the arguments. | |
4657 int nargs = 5; // 2 oops, 3 ints, no size_t or long | |
4658 assert(callee()->signature()->size() == nargs, "copy has 5 arguments"); | |
4659 | |
4660 Node *src = argument(0); | |
4661 Node *src_offset = argument(1); | |
4662 Node *dest = argument(2); | |
4663 Node *dest_offset = argument(3); | |
4664 Node *length = argument(4); | |
4665 | |
4666 // Compile time checks. If any of these checks cannot be verified at compile time, | |
4667 // we do not make a fast path for this call. Instead, we let the call remain as it | |
4668 // is. The checks we choose to mandate at compile time are: | |
4669 // | |
4670 // (1) src and dest are arrays. | |
4671 const Type* src_type = src->Value(&_gvn); | |
4672 const Type* dest_type = dest->Value(&_gvn); | |
4673 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
4674 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
4675 if (top_src == NULL || top_src->klass() == NULL || | |
4676 top_dest == NULL || top_dest->klass() == NULL) { | |
4677 // Conservatively insert a memory barrier on all memory slices. | |
4678 // Do not let writes into the source float below the arraycopy. | |
4679 insert_mem_bar(Op_MemBarCPUOrder); | |
4680 | |
4681 // Call StubRoutines::generic_arraycopy stub. | |
4682 generate_arraycopy(TypeRawPtr::BOTTOM, T_CONFLICT, | |
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diff
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|
4683 src, src_offset, dest, dest_offset, length); |
0 | 4684 |
4685 // Do not let reads from the destination float above the arraycopy. | |
4686 // Since we cannot type the arrays, we don't know which slices | |
4687 // might be affected. We could restrict this barrier only to those | |
4688 // memory slices which pertain to array elements--but don't bother. | |
4689 if (!InsertMemBarAfterArraycopy) | |
4690 // (If InsertMemBarAfterArraycopy, there is already one in place.) | |
4691 insert_mem_bar(Op_MemBarCPUOrder); | |
4692 return true; | |
4693 } | |
4694 | |
4695 // (2) src and dest arrays must have elements of the same BasicType | |
4696 // Figure out the size and type of the elements we will be copying. | |
4697 BasicType src_elem = top_src->klass()->as_array_klass()->element_type()->basic_type(); | |
4698 BasicType dest_elem = top_dest->klass()->as_array_klass()->element_type()->basic_type(); | |
4699 if (src_elem == T_ARRAY) src_elem = T_OBJECT; | |
4700 if (dest_elem == T_ARRAY) dest_elem = T_OBJECT; | |
4701 | |
4702 if (src_elem != dest_elem || dest_elem == T_VOID) { | |
4703 // The component types are not the same or are not recognized. Punt. | |
4704 // (But, avoid the native method wrapper to JVM_ArrayCopy.) | |
4705 generate_slow_arraycopy(TypePtr::BOTTOM, | |
2324 | 4706 src, src_offset, dest, dest_offset, length, |
4707 /*dest_uninitialized*/false); | |
0 | 4708 return true; |
4709 } | |
4710 | |
4711 //--------------------------------------------------------------------------- | |
4712 // We will make a fast path for this call to arraycopy. | |
4713 | |
4714 // We have the following tests left to perform: | |
4715 // | |
4716 // (3) src and dest must not be null. | |
4717 // (4) src_offset must not be negative. | |
4718 // (5) dest_offset must not be negative. | |
4719 // (6) length must not be negative. | |
4720 // (7) src_offset + length must not exceed length of src. | |
4721 // (8) dest_offset + length must not exceed length of dest. | |
4722 // (9) each element of an oop array must be assignable | |
4723 | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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6795
diff
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|
4724 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 4725 record_for_igvn(slow_region); |
4726 | |
4727 // (3) operands must not be null | |
4728 // We currently perform our null checks with the do_null_check routine. | |
4729 // This means that the null exceptions will be reported in the caller | |
4730 // rather than (correctly) reported inside of the native arraycopy call. | |
4731 // This should be corrected, given time. We do our null check with the | |
4732 // stack pointer restored. | |
4733 _sp += nargs; | |
4734 src = do_null_check(src, T_ARRAY); | |
4735 dest = do_null_check(dest, T_ARRAY); | |
4736 _sp -= nargs; | |
4737 | |
4738 // (4) src_offset must not be negative. | |
4739 generate_negative_guard(src_offset, slow_region); | |
4740 | |
4741 // (5) dest_offset must not be negative. | |
4742 generate_negative_guard(dest_offset, slow_region); | |
4743 | |
4744 // (6) length must not be negative (moved to generate_arraycopy()). | |
4745 // generate_negative_guard(length, slow_region); | |
4746 | |
4747 // (7) src_offset + length must not exceed length of src. | |
4748 generate_limit_guard(src_offset, length, | |
4749 load_array_length(src), | |
4750 slow_region); | |
4751 | |
4752 // (8) dest_offset + length must not exceed length of dest. | |
4753 generate_limit_guard(dest_offset, length, | |
4754 load_array_length(dest), | |
4755 slow_region); | |
4756 | |
4757 // (9) each element of an oop array must be assignable | |
4758 // The generate_arraycopy subroutine checks this. | |
4759 | |
4760 // This is where the memory effects are placed: | |
4761 const TypePtr* adr_type = TypeAryPtr::get_array_body_type(dest_elem); | |
4762 generate_arraycopy(adr_type, dest_elem, | |
4763 src, src_offset, dest, dest_offset, length, | |
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4764 false, false, slow_region); |
0 | 4765 |
4766 return true; | |
4767 } | |
4768 | |
4769 //-----------------------------generate_arraycopy---------------------- | |
4770 // Generate an optimized call to arraycopy. | |
4771 // Caller must guard against non-arrays. | |
4772 // Caller must determine a common array basic-type for both arrays. | |
4773 // Caller must validate offsets against array bounds. | |
4774 // The slow_region has already collected guard failure paths | |
4775 // (such as out of bounds length or non-conformable array types). | |
4776 // The generated code has this shape, in general: | |
4777 // | |
4778 // if (length == 0) return // via zero_path | |
4779 // slowval = -1 | |
4780 // if (types unknown) { | |
4781 // slowval = call generic copy loop | |
4782 // if (slowval == 0) return // via checked_path | |
4783 // } else if (indexes in bounds) { | |
4784 // if ((is object array) && !(array type check)) { | |
4785 // slowval = call checked copy loop | |
4786 // if (slowval == 0) return // via checked_path | |
4787 // } else { | |
4788 // call bulk copy loop | |
4789 // return // via fast_path | |
4790 // } | |
4791 // } | |
4792 // // adjust params for remaining work: | |
4793 // if (slowval != -1) { | |
4794 // n = -1^slowval; src_offset += n; dest_offset += n; length -= n | |
4795 // } | |
4796 // slow_region: | |
4797 // call slow arraycopy(src, src_offset, dest, dest_offset, length) | |
4798 // return // via slow_call_path | |
4799 // | |
4800 // This routine is used from several intrinsics: System.arraycopy, | |
4801 // Object.clone (the array subcase), and Arrays.copyOf[Range]. | |
4802 // | |
4803 void | |
4804 LibraryCallKit::generate_arraycopy(const TypePtr* adr_type, | |
4805 BasicType basic_elem_type, | |
4806 Node* src, Node* src_offset, | |
4807 Node* dest, Node* dest_offset, | |
4808 Node* copy_length, | |
4809 bool disjoint_bases, | |
4810 bool length_never_negative, | |
4811 RegionNode* slow_region) { | |
4812 | |
4813 if (slow_region == NULL) { | |
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4814 slow_region = new(C) RegionNode(1); |
0 | 4815 record_for_igvn(slow_region); |
4816 } | |
4817 | |
4818 Node* original_dest = dest; | |
4819 AllocateArrayNode* alloc = NULL; // used for zeroing, if needed | |
2324 | 4820 bool dest_uninitialized = false; |
0 | 4821 |
4822 // See if this is the initialization of a newly-allocated array. | |
4823 // If so, we will take responsibility here for initializing it to zero. | |
4824 // (Note: Because tightly_coupled_allocation performs checks on the | |
4825 // out-edges of the dest, we need to avoid making derived pointers | |
4826 // from it until we have checked its uses.) | |
4827 if (ReduceBulkZeroing | |
4828 && !ZeroTLAB // pointless if already zeroed | |
4829 && basic_elem_type != T_CONFLICT // avoid corner case | |
4778 | 4830 && !src->eqv_uncast(dest) |
0 | 4831 && ((alloc = tightly_coupled_allocation(dest, slow_region)) |
4832 != NULL) | |
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4833 && _gvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0 |
0 | 4834 && alloc->maybe_set_complete(&_gvn)) { |
4835 // "You break it, you buy it." | |
4836 InitializeNode* init = alloc->initialization(); | |
4837 assert(init->is_complete(), "we just did this"); | |
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4838 init->set_complete_with_arraycopy(); |
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4839 assert(dest->is_CheckCastPP(), "sanity"); |
0 | 4840 assert(dest->in(0)->in(0) == init, "dest pinned"); |
4841 adr_type = TypeRawPtr::BOTTOM; // all initializations are into raw memory | |
4842 // From this point on, every exit path is responsible for | |
4843 // initializing any non-copied parts of the object to zero. | |
2324 | 4844 // Also, if this flag is set we make sure that arraycopy interacts properly |
4845 // with G1, eliding pre-barriers. See CR 6627983. | |
4846 dest_uninitialized = true; | |
0 | 4847 } else { |
4848 // No zeroing elimination here. | |
4849 alloc = NULL; | |
4850 //original_dest = dest; | |
2324 | 4851 //dest_uninitialized = false; |
0 | 4852 } |
4853 | |
4854 // Results are placed here: | |
4855 enum { fast_path = 1, // normal void-returning assembly stub | |
4856 checked_path = 2, // special assembly stub with cleanup | |
4857 slow_call_path = 3, // something went wrong; call the VM | |
4858 zero_path = 4, // bypass when length of copy is zero | |
4859 bcopy_path = 5, // copy primitive array by 64-bit blocks | |
4860 PATH_LIMIT = 6 | |
4861 }; | |
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4862 RegionNode* result_region = new(C) RegionNode(PATH_LIMIT); |
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4863 PhiNode* result_i_o = new(C) PhiNode(result_region, Type::ABIO); |
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4864 PhiNode* result_memory = new(C) PhiNode(result_region, Type::MEMORY, adr_type); |
0 | 4865 record_for_igvn(result_region); |
4866 _gvn.set_type_bottom(result_i_o); | |
4867 _gvn.set_type_bottom(result_memory); | |
4868 assert(adr_type != TypePtr::BOTTOM, "must be RawMem or a T[] slice"); | |
4869 | |
4870 // The slow_control path: | |
4871 Node* slow_control; | |
4872 Node* slow_i_o = i_o(); | |
4873 Node* slow_mem = memory(adr_type); | |
4874 debug_only(slow_control = (Node*) badAddress); | |
4875 | |
4876 // Checked control path: | |
4877 Node* checked_control = top(); | |
4878 Node* checked_mem = NULL; | |
4879 Node* checked_i_o = NULL; | |
4880 Node* checked_value = NULL; | |
4881 | |
4882 if (basic_elem_type == T_CONFLICT) { | |
2324 | 4883 assert(!dest_uninitialized, ""); |
0 | 4884 Node* cv = generate_generic_arraycopy(adr_type, |
4885 src, src_offset, dest, dest_offset, | |
2324 | 4886 copy_length, dest_uninitialized); |
0 | 4887 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4888 checked_control = control(); | |
4889 checked_i_o = i_o(); | |
4890 checked_mem = memory(adr_type); | |
4891 checked_value = cv; | |
4892 set_control(top()); // no fast path | |
4893 } | |
4894 | |
4895 Node* not_pos = generate_nonpositive_guard(copy_length, length_never_negative); | |
4896 if (not_pos != NULL) { | |
4897 PreserveJVMState pjvms(this); | |
4898 set_control(not_pos); | |
4899 | |
4900 // (6) length must not be negative. | |
4901 if (!length_never_negative) { | |
4902 generate_negative_guard(copy_length, slow_region); | |
4903 } | |
4904 | |
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4905 // copy_length is 0. |
2324 | 4906 if (!stopped() && dest_uninitialized) { |
0 | 4907 Node* dest_length = alloc->in(AllocateNode::ALength); |
4778 | 4908 if (copy_length->eqv_uncast(dest_length) |
0 | 4909 || _gvn.find_int_con(dest_length, 1) <= 0) { |
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4910 // There is no zeroing to do. No need for a secondary raw memory barrier. |
0 | 4911 } else { |
4912 // Clear the whole thing since there are no source elements to copy. | |
4913 generate_clear_array(adr_type, dest, basic_elem_type, | |
4914 intcon(0), NULL, | |
4915 alloc->in(AllocateNode::AllocSize)); | |
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4916 // Use a secondary InitializeNode as raw memory barrier. |
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4917 // Currently it is needed only on this path since other |
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4918 // paths have stub or runtime calls as raw memory barriers. |
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4919 InitializeNode* init = insert_mem_bar_volatile(Op_Initialize, |
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4920 Compile::AliasIdxRaw, |
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4921 top())->as_Initialize(); |
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4922 init->set_complete(&_gvn); // (there is no corresponding AllocateNode) |
0 | 4923 } |
4924 } | |
4925 | |
4926 // Present the results of the fast call. | |
4927 result_region->init_req(zero_path, control()); | |
4928 result_i_o ->init_req(zero_path, i_o()); | |
4929 result_memory->init_req(zero_path, memory(adr_type)); | |
4930 } | |
4931 | |
2324 | 4932 if (!stopped() && dest_uninitialized) { |
0 | 4933 // We have to initialize the *uncopied* part of the array to zero. |
4934 // The copy destination is the slice dest[off..off+len]. The other slices | |
4935 // are dest_head = dest[0..off] and dest_tail = dest[off+len..dest.length]. | |
4936 Node* dest_size = alloc->in(AllocateNode::AllocSize); | |
4937 Node* dest_length = alloc->in(AllocateNode::ALength); | |
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4938 Node* dest_tail = _gvn.transform( new(C) AddINode(dest_offset, |
0 | 4939 copy_length) ); |
4940 | |
4941 // If there is a head section that needs zeroing, do it now. | |
4942 if (find_int_con(dest_offset, -1) != 0) { | |
4943 generate_clear_array(adr_type, dest, basic_elem_type, | |
4944 intcon(0), dest_offset, | |
4945 NULL); | |
4946 } | |
4947 | |
4948 // Next, perform a dynamic check on the tail length. | |
4949 // It is often zero, and we can win big if we prove this. | |
4950 // There are two wins: Avoid generating the ClearArray | |
4951 // with its attendant messy index arithmetic, and upgrade | |
4952 // the copy to a more hardware-friendly word size of 64 bits. | |
4953 Node* tail_ctl = NULL; | |
4778 | 4954 if (!stopped() && !dest_tail->eqv_uncast(dest_length)) { |
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4955 Node* cmp_lt = _gvn.transform( new(C) CmpINode(dest_tail, dest_length) ); |
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4956 Node* bol_lt = _gvn.transform( new(C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 4957 tail_ctl = generate_slow_guard(bol_lt, NULL); |
4958 assert(tail_ctl != NULL || !stopped(), "must be an outcome"); | |
4959 } | |
4960 | |
4961 // At this point, let's assume there is no tail. | |
4962 if (!stopped() && alloc != NULL && basic_elem_type != T_OBJECT) { | |
4963 // There is no tail. Try an upgrade to a 64-bit copy. | |
4964 bool didit = false; | |
4965 { PreserveJVMState pjvms(this); | |
4966 didit = generate_block_arraycopy(adr_type, basic_elem_type, alloc, | |
4967 src, src_offset, dest, dest_offset, | |
2324 | 4968 dest_size, dest_uninitialized); |
0 | 4969 if (didit) { |
4970 // Present the results of the block-copying fast call. | |
4971 result_region->init_req(bcopy_path, control()); | |
4972 result_i_o ->init_req(bcopy_path, i_o()); | |
4973 result_memory->init_req(bcopy_path, memory(adr_type)); | |
4974 } | |
4975 } | |
4976 if (didit) | |
4977 set_control(top()); // no regular fast path | |
4978 } | |
4979 | |
4980 // Clear the tail, if any. | |
4981 if (tail_ctl != NULL) { | |
4982 Node* notail_ctl = stopped() ? NULL : control(); | |
4983 set_control(tail_ctl); | |
4984 if (notail_ctl == NULL) { | |
4985 generate_clear_array(adr_type, dest, basic_elem_type, | |
4986 dest_tail, NULL, | |
4987 dest_size); | |
4988 } else { | |
4989 // Make a local merge. | |
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4990 Node* done_ctl = new(C) RegionNode(3); |
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4991 Node* done_mem = new(C) PhiNode(done_ctl, Type::MEMORY, adr_type); |
0 | 4992 done_ctl->init_req(1, notail_ctl); |
4993 done_mem->init_req(1, memory(adr_type)); | |
4994 generate_clear_array(adr_type, dest, basic_elem_type, | |
4995 dest_tail, NULL, | |
4996 dest_size); | |
4997 done_ctl->init_req(2, control()); | |
4998 done_mem->init_req(2, memory(adr_type)); | |
4999 set_control( _gvn.transform(done_ctl) ); | |
5000 set_memory( _gvn.transform(done_mem), adr_type ); | |
5001 } | |
5002 } | |
5003 } | |
5004 | |
5005 BasicType copy_type = basic_elem_type; | |
5006 assert(basic_elem_type != T_ARRAY, "caller must fix this"); | |
5007 if (!stopped() && copy_type == T_OBJECT) { | |
5008 // If src and dest have compatible element types, we can copy bits. | |
5009 // Types S[] and D[] are compatible if D is a supertype of S. | |
5010 // | |
5011 // If they are not, we will use checked_oop_disjoint_arraycopy, | |
5012 // which performs a fast optimistic per-oop check, and backs off | |
5013 // further to JVM_ArrayCopy on the first per-oop check that fails. | |
5014 // (Actually, we don't move raw bits only; the GC requires card marks.) | |
5015 | |
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da91efe96a93
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5016 // Get the Klass* for both src and dest |
0 | 5017 Node* src_klass = load_object_klass(src); |
5018 Node* dest_klass = load_object_klass(dest); | |
5019 | |
5020 // Generate the subtype check. | |
5021 // This might fold up statically, or then again it might not. | |
5022 // | |
5023 // Non-static example: Copying List<String>.elements to a new String[]. | |
5024 // The backing store for a List<String> is always an Object[], | |
5025 // but its elements are always type String, if the generic types | |
5026 // are correct at the source level. | |
5027 // | |
5028 // Test S[] against D[], not S against D, because (probably) | |
5029 // the secondary supertype cache is less busy for S[] than S. | |
5030 // This usually only matters when D is an interface. | |
5031 Node* not_subtype_ctrl = gen_subtype_check(src_klass, dest_klass); | |
5032 // Plug failing path into checked_oop_disjoint_arraycopy | |
5033 if (not_subtype_ctrl != top()) { | |
5034 PreserveJVMState pjvms(this); | |
5035 set_control(not_subtype_ctrl); | |
5036 // (At this point we can assume disjoint_bases, since types differ.) | |
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5037 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
0 | 5038 Node* p1 = basic_plus_adr(dest_klass, ek_offset); |
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5039 Node* n1 = LoadKlassNode::make(_gvn, immutable_memory(), p1, TypeRawPtr::BOTTOM); |
0 | 5040 Node* dest_elem_klass = _gvn.transform(n1); |
5041 Node* cv = generate_checkcast_arraycopy(adr_type, | |
5042 dest_elem_klass, | |
5043 src, src_offset, dest, dest_offset, | |
2324 | 5044 ConvI2X(copy_length), dest_uninitialized); |
0 | 5045 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
5046 checked_control = control(); | |
5047 checked_i_o = i_o(); | |
5048 checked_mem = memory(adr_type); | |
5049 checked_value = cv; | |
5050 } | |
5051 // At this point we know we do not need type checks on oop stores. | |
5052 | |
5053 // Let's see if we need card marks: | |
5054 if (alloc != NULL && use_ReduceInitialCardMarks()) { | |
5055 // If we do not need card marks, copy using the jint or jlong stub. | |
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5056 copy_type = LP64_ONLY(UseCompressedOops ? T_INT : T_LONG) NOT_LP64(T_INT); |
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5057 assert(type2aelembytes(basic_elem_type) == type2aelembytes(copy_type), |
0 | 5058 "sizes agree"); |
5059 } | |
5060 } | |
5061 | |
5062 if (!stopped()) { | |
5063 // Generate the fast path, if possible. | |
5064 PreserveJVMState pjvms(this); | |
5065 generate_unchecked_arraycopy(adr_type, copy_type, disjoint_bases, | |
5066 src, src_offset, dest, dest_offset, | |
2324 | 5067 ConvI2X(copy_length), dest_uninitialized); |
0 | 5068 |
5069 // Present the results of the fast call. | |
5070 result_region->init_req(fast_path, control()); | |
5071 result_i_o ->init_req(fast_path, i_o()); | |
5072 result_memory->init_req(fast_path, memory(adr_type)); | |
5073 } | |
5074 | |
5075 // Here are all the slow paths up to this point, in one bundle: | |
5076 slow_control = top(); | |
5077 if (slow_region != NULL) | |
5078 slow_control = _gvn.transform(slow_region); | |
5079 debug_only(slow_region = (RegionNode*)badAddress); | |
5080 | |
5081 set_control(checked_control); | |
5082 if (!stopped()) { | |
5083 // Clean up after the checked call. | |
5084 // The returned value is either 0 or -1^K, | |
5085 // where K = number of partially transferred array elements. | |
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5086 Node* cmp = _gvn.transform( new(C) CmpINode(checked_value, intcon(0)) ); |
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5087 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
0 | 5088 IfNode* iff = create_and_map_if(control(), bol, PROB_MAX, COUNT_UNKNOWN); |
5089 | |
5090 // If it is 0, we are done, so transfer to the end. | |
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5091 Node* checks_done = _gvn.transform( new(C) IfTrueNode(iff) ); |
0 | 5092 result_region->init_req(checked_path, checks_done); |
5093 result_i_o ->init_req(checked_path, checked_i_o); | |
5094 result_memory->init_req(checked_path, checked_mem); | |
5095 | |
5096 // If it is not zero, merge into the slow call. | |
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5097 set_control( _gvn.transform( new(C) IfFalseNode(iff) )); |
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5098 RegionNode* slow_reg2 = new(C) RegionNode(3); |
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5099 PhiNode* slow_i_o2 = new(C) PhiNode(slow_reg2, Type::ABIO); |
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5100 PhiNode* slow_mem2 = new(C) PhiNode(slow_reg2, Type::MEMORY, adr_type); |
0 | 5101 record_for_igvn(slow_reg2); |
5102 slow_reg2 ->init_req(1, slow_control); | |
5103 slow_i_o2 ->init_req(1, slow_i_o); | |
5104 slow_mem2 ->init_req(1, slow_mem); | |
5105 slow_reg2 ->init_req(2, control()); | |
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5106 slow_i_o2 ->init_req(2, checked_i_o); |
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5107 slow_mem2 ->init_req(2, checked_mem); |
0 | 5108 |
5109 slow_control = _gvn.transform(slow_reg2); | |
5110 slow_i_o = _gvn.transform(slow_i_o2); | |
5111 slow_mem = _gvn.transform(slow_mem2); | |
5112 | |
5113 if (alloc != NULL) { | |
5114 // We'll restart from the very beginning, after zeroing the whole thing. | |
5115 // This can cause double writes, but that's OK since dest is brand new. | |
5116 // So we ignore the low 31 bits of the value returned from the stub. | |
5117 } else { | |
5118 // We must continue the copy exactly where it failed, or else | |
5119 // another thread might see the wrong number of writes to dest. | |
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5120 Node* checked_offset = _gvn.transform( new(C) XorINode(checked_value, intcon(-1)) ); |
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5121 Node* slow_offset = new(C) PhiNode(slow_reg2, TypeInt::INT); |
0 | 5122 slow_offset->init_req(1, intcon(0)); |
5123 slow_offset->init_req(2, checked_offset); | |
5124 slow_offset = _gvn.transform(slow_offset); | |
5125 | |
5126 // Adjust the arguments by the conditionally incoming offset. | |
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5127 Node* src_off_plus = _gvn.transform( new(C) AddINode(src_offset, slow_offset) ); |
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5128 Node* dest_off_plus = _gvn.transform( new(C) AddINode(dest_offset, slow_offset) ); |
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5129 Node* length_minus = _gvn.transform( new(C) SubINode(copy_length, slow_offset) ); |
0 | 5130 |
5131 // Tweak the node variables to adjust the code produced below: | |
5132 src_offset = src_off_plus; | |
5133 dest_offset = dest_off_plus; | |
5134 copy_length = length_minus; | |
5135 } | |
5136 } | |
5137 | |
5138 set_control(slow_control); | |
5139 if (!stopped()) { | |
5140 // Generate the slow path, if needed. | |
5141 PreserveJVMState pjvms(this); // replace_in_map may trash the map | |
5142 | |
5143 set_memory(slow_mem, adr_type); | |
5144 set_i_o(slow_i_o); | |
5145 | |
2324 | 5146 if (dest_uninitialized) { |
0 | 5147 generate_clear_array(adr_type, dest, basic_elem_type, |
5148 intcon(0), NULL, | |
5149 alloc->in(AllocateNode::AllocSize)); | |
5150 } | |
5151 | |
5152 generate_slow_arraycopy(adr_type, | |
5153 src, src_offset, dest, dest_offset, | |
2324 | 5154 copy_length, /*dest_uninitialized*/false); |
0 | 5155 |
5156 result_region->init_req(slow_call_path, control()); | |
5157 result_i_o ->init_req(slow_call_path, i_o()); | |
5158 result_memory->init_req(slow_call_path, memory(adr_type)); | |
5159 } | |
5160 | |
5161 // Remove unused edges. | |
5162 for (uint i = 1; i < result_region->req(); i++) { | |
5163 if (result_region->in(i) == NULL) | |
5164 result_region->init_req(i, top()); | |
5165 } | |
5166 | |
5167 // Finished; return the combined state. | |
5168 set_control( _gvn.transform(result_region) ); | |
5169 set_i_o( _gvn.transform(result_i_o) ); | |
5170 set_memory( _gvn.transform(result_memory), adr_type ); | |
5171 | |
5172 // The memory edges above are precise in order to model effects around | |
605 | 5173 // array copies accurately to allow value numbering of field loads around |
0 | 5174 // arraycopy. Such field loads, both before and after, are common in Java |
5175 // collections and similar classes involving header/array data structures. | |
5176 // | |
5177 // But with low number of register or when some registers are used or killed | |
5178 // by arraycopy calls it causes registers spilling on stack. See 6544710. | |
5179 // The next memory barrier is added to avoid it. If the arraycopy can be | |
5180 // optimized away (which it can, sometimes) then we can manually remove | |
5181 // the membar also. | |
958
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5182 // |
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5183 // Do not let reads from the cloned object float above the arraycopy. |
4763
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5184 if (alloc != NULL) { |
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5185 // Do not let stores that initialize this object be reordered with |
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5186 // a subsequent store that would make this object accessible by |
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5187 // other threads. |
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5188 // Record what AllocateNode this StoreStore protects so that |
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5189 // escape analysis can go from the MemBarStoreStoreNode to the |
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5190 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
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5191 // based on the escape status of the AllocateNode. |
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5192 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress)); |
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5193 } else if (InsertMemBarAfterArraycopy) |
0 | 5194 insert_mem_bar(Op_MemBarCPUOrder); |
5195 } | |
5196 | |
5197 | |
5198 // Helper function which determines if an arraycopy immediately follows | |
5199 // an allocation, with no intervening tests or other escapes for the object. | |
5200 AllocateArrayNode* | |
5201 LibraryCallKit::tightly_coupled_allocation(Node* ptr, | |
5202 RegionNode* slow_region) { | |
5203 if (stopped()) return NULL; // no fast path | |
5204 if (C->AliasLevel() == 0) return NULL; // no MergeMems around | |
5205 | |
5206 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr, &_gvn); | |
5207 if (alloc == NULL) return NULL; | |
5208 | |
5209 Node* rawmem = memory(Compile::AliasIdxRaw); | |
5210 // Is the allocation's memory state untouched? | |
5211 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) { | |
5212 // Bail out if there have been raw-memory effects since the allocation. | |
5213 // (Example: There might have been a call or safepoint.) | |
5214 return NULL; | |
5215 } | |
5216 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw); | |
5217 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) { | |
5218 return NULL; | |
5219 } | |
5220 | |
5221 // There must be no unexpected observers of this allocation. | |
5222 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) { | |
5223 Node* obs = ptr->fast_out(i); | |
5224 if (obs != this->map()) { | |
5225 return NULL; | |
5226 } | |
5227 } | |
5228 | |
5229 // This arraycopy must unconditionally follow the allocation of the ptr. | |
5230 Node* alloc_ctl = ptr->in(0); | |
5231 assert(just_allocated_object(alloc_ctl) == ptr, "most recent allo"); | |
5232 | |
5233 Node* ctl = control(); | |
5234 while (ctl != alloc_ctl) { | |
5235 // There may be guards which feed into the slow_region. | |
5236 // Any other control flow means that we might not get a chance | |
5237 // to finish initializing the allocated object. | |
5238 if ((ctl->is_IfFalse() || ctl->is_IfTrue()) && ctl->in(0)->is_If()) { | |
5239 IfNode* iff = ctl->in(0)->as_If(); | |
5240 Node* not_ctl = iff->proj_out(1 - ctl->as_Proj()->_con); | |
5241 assert(not_ctl != NULL && not_ctl != ctl, "found alternate"); | |
5242 if (slow_region != NULL && slow_region->find_edge(not_ctl) >= 1) { | |
5243 ctl = iff->in(0); // This test feeds the known slow_region. | |
5244 continue; | |
5245 } | |
5246 // One more try: Various low-level checks bottom out in | |
5247 // uncommon traps. If the debug-info of the trap omits | |
5248 // any reference to the allocation, as we've already | |
5249 // observed, then there can be no objection to the trap. | |
5250 bool found_trap = false; | |
5251 for (DUIterator_Fast jmax, j = not_ctl->fast_outs(jmax); j < jmax; j++) { | |
5252 Node* obs = not_ctl->fast_out(j); | |
5253 if (obs->in(0) == not_ctl && obs->is_Call() && | |
1748 | 5254 (obs->as_Call()->entry_point() == SharedRuntime::uncommon_trap_blob()->entry_point())) { |
0 | 5255 found_trap = true; break; |
5256 } | |
5257 } | |
5258 if (found_trap) { | |
5259 ctl = iff->in(0); // This test feeds a harmless uncommon trap. | |
5260 continue; | |
5261 } | |
5262 } | |
5263 return NULL; | |
5264 } | |
5265 | |
5266 // If we get this far, we have an allocation which immediately | |
5267 // precedes the arraycopy, and we can take over zeroing the new object. | |
5268 // The arraycopy will finish the initialization, and provide | |
5269 // a new control state to which we will anchor the destination pointer. | |
5270 | |
5271 return alloc; | |
5272 } | |
5273 | |
5274 // Helper for initialization of arrays, creating a ClearArray. | |
5275 // It writes zero bits in [start..end), within the body of an array object. | |
5276 // The memory effects are all chained onto the 'adr_type' alias category. | |
5277 // | |
5278 // Since the object is otherwise uninitialized, we are free | |
5279 // to put a little "slop" around the edges of the cleared area, | |
5280 // as long as it does not go back into the array's header, | |
5281 // or beyond the array end within the heap. | |
5282 // | |
5283 // The lower edge can be rounded down to the nearest jint and the | |
5284 // upper edge can be rounded up to the nearest MinObjAlignmentInBytes. | |
5285 // | |
5286 // Arguments: | |
5287 // adr_type memory slice where writes are generated | |
5288 // dest oop of the destination array | |
5289 // basic_elem_type element type of the destination | |
5290 // slice_idx array index of first element to store | |
5291 // slice_len number of elements to store (or NULL) | |
5292 // dest_size total size in bytes of the array object | |
5293 // | |
5294 // Exactly one of slice_len or dest_size must be non-NULL. | |
5295 // If dest_size is non-NULL, zeroing extends to the end of the object. | |
5296 // If slice_len is non-NULL, the slice_idx value must be a constant. | |
5297 void | |
5298 LibraryCallKit::generate_clear_array(const TypePtr* adr_type, | |
5299 Node* dest, | |
5300 BasicType basic_elem_type, | |
5301 Node* slice_idx, | |
5302 Node* slice_len, | |
5303 Node* dest_size) { | |
5304 // one or the other but not both of slice_len and dest_size: | |
5305 assert((slice_len != NULL? 1: 0) + (dest_size != NULL? 1: 0) == 1, ""); | |
5306 if (slice_len == NULL) slice_len = top(); | |
5307 if (dest_size == NULL) dest_size = top(); | |
5308 | |
5309 // operate on this memory slice: | |
5310 Node* mem = memory(adr_type); // memory slice to operate on | |
5311 | |
5312 // scaling and rounding of indexes: | |
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5313 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5314 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); |
5315 int clear_low = (-1 << scale) & (BytesPerInt - 1); | |
5316 int bump_bit = (-1 << scale) & BytesPerInt; | |
5317 | |
5318 // determine constant starts and ends | |
5319 const intptr_t BIG_NEG = -128; | |
5320 assert(BIG_NEG + 2*abase < 0, "neg enough"); | |
5321 intptr_t slice_idx_con = (intptr_t) find_int_con(slice_idx, BIG_NEG); | |
5322 intptr_t slice_len_con = (intptr_t) find_int_con(slice_len, BIG_NEG); | |
5323 if (slice_len_con == 0) { | |
5324 return; // nothing to do here | |
5325 } | |
5326 intptr_t start_con = (abase + (slice_idx_con << scale)) & ~clear_low; | |
5327 intptr_t end_con = find_intptr_t_con(dest_size, -1); | |
5328 if (slice_idx_con >= 0 && slice_len_con >= 0) { | |
5329 assert(end_con < 0, "not two cons"); | |
5330 end_con = round_to(abase + ((slice_idx_con + slice_len_con) << scale), | |
5331 BytesPerLong); | |
5332 } | |
5333 | |
5334 if (start_con >= 0 && end_con >= 0) { | |
5335 // Constant start and end. Simple. | |
5336 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5337 start_con, end_con, &_gvn); | |
5338 } else if (start_con >= 0 && dest_size != top()) { | |
5339 // Constant start, pre-rounded end after the tail of the array. | |
5340 Node* end = dest_size; | |
5341 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5342 start_con, end, &_gvn); | |
5343 } else if (start_con >= 0 && slice_len != top()) { | |
5344 // Constant start, non-constant end. End needs rounding up. | |
5345 // End offset = round_up(abase + ((slice_idx_con + slice_len) << scale), 8) | |
5346 intptr_t end_base = abase + (slice_idx_con << scale); | |
5347 int end_round = (-1 << scale) & (BytesPerLong - 1); | |
5348 Node* end = ConvI2X(slice_len); | |
5349 if (scale != 0) | |
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5350 end = _gvn.transform( new(C) LShiftXNode(end, intcon(scale) )); |
0 | 5351 end_base += end_round; |
6804
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5352 end = _gvn.transform( new(C) AddXNode(end, MakeConX(end_base)) ); |
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5353 end = _gvn.transform( new(C) AndXNode(end, MakeConX(~end_round)) ); |
0 | 5354 mem = ClearArrayNode::clear_memory(control(), mem, dest, |
5355 start_con, end, &_gvn); | |
5356 } else if (start_con < 0 && dest_size != top()) { | |
5357 // Non-constant start, pre-rounded end after the tail of the array. | |
5358 // This is almost certainly a "round-to-end" operation. | |
5359 Node* start = slice_idx; | |
5360 start = ConvI2X(start); | |
5361 if (scale != 0) | |
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5362 start = _gvn.transform( new(C) LShiftXNode( start, intcon(scale) )); |
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5363 start = _gvn.transform( new(C) AddXNode(start, MakeConX(abase)) ); |
0 | 5364 if ((bump_bit | clear_low) != 0) { |
5365 int to_clear = (bump_bit | clear_low); | |
5366 // Align up mod 8, then store a jint zero unconditionally | |
5367 // just before the mod-8 boundary. | |
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5368 if (((abase + bump_bit) & ~to_clear) - bump_bit |
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5369 < arrayOopDesc::length_offset_in_bytes() + BytesPerInt) { |
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5370 bump_bit = 0; |
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5371 assert((abase & to_clear) == 0, "array base must be long-aligned"); |
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5372 } else { |
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5373 // Bump 'start' up to (or past) the next jint boundary: |
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5374 start = _gvn.transform( new(C) AddXNode(start, MakeConX(bump_bit)) ); |
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5375 assert((abase & clear_low) == 0, "array base must be int-aligned"); |
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5376 } |
0 | 5377 // Round bumped 'start' down to jlong boundary in body of array. |
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5378 start = _gvn.transform( new(C) AndXNode(start, MakeConX(~to_clear)) ); |
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5379 if (bump_bit != 0) { |
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5380 // Store a zero to the immediately preceding jint: |
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5381 Node* x1 = _gvn.transform( new(C) AddXNode(start, MakeConX(-bump_bit)) ); |
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5382 Node* p1 = basic_plus_adr(dest, x1); |
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5383 mem = StoreNode::make(_gvn, control(), mem, p1, adr_type, intcon(0), T_INT); |
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5384 mem = _gvn.transform(mem); |
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5385 } |
0 | 5386 } |
5387 Node* end = dest_size; // pre-rounded | |
5388 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5389 start, end, &_gvn); | |
5390 } else { | |
5391 // Non-constant start, unrounded non-constant end. | |
5392 // (Nobody zeroes a random midsection of an array using this routine.) | |
5393 ShouldNotReachHere(); // fix caller | |
5394 } | |
5395 | |
5396 // Done. | |
5397 set_memory(mem, adr_type); | |
5398 } | |
5399 | |
5400 | |
5401 bool | |
5402 LibraryCallKit::generate_block_arraycopy(const TypePtr* adr_type, | |
5403 BasicType basic_elem_type, | |
5404 AllocateNode* alloc, | |
5405 Node* src, Node* src_offset, | |
5406 Node* dest, Node* dest_offset, | |
2324 | 5407 Node* dest_size, bool dest_uninitialized) { |
0 | 5408 // See if there is an advantage from block transfer. |
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5409 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5410 if (scale >= LogBytesPerLong) |
5411 return false; // it is already a block transfer | |
5412 | |
5413 // Look at the alignment of the starting offsets. | |
5414 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); | |
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5415 |
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5416 intptr_t src_off_con = (intptr_t) find_int_con(src_offset, -1); |
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|
5417 intptr_t dest_off_con = (intptr_t) find_int_con(dest_offset, -1); |
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|
5418 if (src_off_con < 0 || dest_off_con < 0) |
0 | 5419 // At present, we can only understand constants. |
5420 return false; | |
5421 | |
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5422 intptr_t src_off = abase + (src_off_con << scale); |
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|
5423 intptr_t dest_off = abase + (dest_off_con << scale); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5424 |
0 | 5425 if (((src_off | dest_off) & (BytesPerLong-1)) != 0) { |
5426 // Non-aligned; too bad. | |
5427 // One more chance: Pick off an initial 32-bit word. | |
5428 // This is a common case, since abase can be odd mod 8. | |
5429 if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt && | |
5430 ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) { | |
5431 Node* sptr = basic_plus_adr(src, src_off); | |
5432 Node* dptr = basic_plus_adr(dest, dest_off); | |
5433 Node* sval = make_load(control(), sptr, TypeInt::INT, T_INT, adr_type); | |
5434 store_to_memory(control(), dptr, sval, T_INT, adr_type); | |
5435 src_off += BytesPerInt; | |
5436 dest_off += BytesPerInt; | |
5437 } else { | |
5438 return false; | |
5439 } | |
5440 } | |
5441 assert(src_off % BytesPerLong == 0, ""); | |
5442 assert(dest_off % BytesPerLong == 0, ""); | |
5443 | |
5444 // Do this copy by giant steps. | |
5445 Node* sptr = basic_plus_adr(src, src_off); | |
5446 Node* dptr = basic_plus_adr(dest, dest_off); | |
5447 Node* countx = dest_size; | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
5448 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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|
5449 countx = _gvn.transform( new (C) URShiftXNode(countx, intcon(LogBytesPerLong)) ); |
0 | 5450 |
5451 bool disjoint_bases = true; // since alloc != NULL | |
5452 generate_unchecked_arraycopy(adr_type, T_LONG, disjoint_bases, | |
2324 | 5453 sptr, NULL, dptr, NULL, countx, dest_uninitialized); |
0 | 5454 |
5455 return true; | |
5456 } | |
5457 | |
5458 | |
5459 // Helper function; generates code for the slow case. | |
5460 // We make a call to a runtime method which emulates the native method, | |
5461 // but without the native wrapper overhead. | |
5462 void | |
5463 LibraryCallKit::generate_slow_arraycopy(const TypePtr* adr_type, | |
5464 Node* src, Node* src_offset, | |
5465 Node* dest, Node* dest_offset, | |
2324 | 5466 Node* copy_length, bool dest_uninitialized) { |
5467 assert(!dest_uninitialized, "Invariant"); | |
0 | 5468 Node* call = make_runtime_call(RC_NO_LEAF | RC_UNCOMMON, |
5469 OptoRuntime::slow_arraycopy_Type(), | |
5470 OptoRuntime::slow_arraycopy_Java(), | |
5471 "slow_arraycopy", adr_type, | |
5472 src, src_offset, dest, dest_offset, | |
5473 copy_length); | |
5474 | |
5475 // Handle exceptions thrown by this fellow: | |
5476 make_slow_call_ex(call, env()->Throwable_klass(), false); | |
5477 } | |
5478 | |
5479 // Helper function; generates code for cases requiring runtime checks. | |
5480 Node* | |
5481 LibraryCallKit::generate_checkcast_arraycopy(const TypePtr* adr_type, | |
5482 Node* dest_elem_klass, | |
5483 Node* src, Node* src_offset, | |
5484 Node* dest, Node* dest_offset, | |
2324 | 5485 Node* copy_length, bool dest_uninitialized) { |
0 | 5486 if (stopped()) return NULL; |
5487 | |
2324 | 5488 address copyfunc_addr = StubRoutines::checkcast_arraycopy(dest_uninitialized); |
0 | 5489 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. |
5490 return NULL; | |
5491 } | |
5492 | |
5493 // Pick out the parameters required to perform a store-check | |
5494 // for the target array. This is an optimistic check. It will | |
5495 // look in each non-null element's class, at the desired klass's | |
5496 // super_check_offset, for the desired klass. | |
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
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diff
changeset
|
5497 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 5498 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
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|
5499 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
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1748
diff
changeset
|
5500 Node* check_offset = ConvI2X(_gvn.transform(n3)); |
0 | 5501 Node* check_value = dest_elem_klass; |
5502 | |
5503 Node* src_start = array_element_address(src, src_offset, T_OBJECT); | |
5504 Node* dest_start = array_element_address(dest, dest_offset, T_OBJECT); | |
5505 | |
5506 // (We know the arrays are never conjoint, because their types differ.) | |
5507 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5508 OptoRuntime::checkcast_arraycopy_Type(), | |
5509 copyfunc_addr, "checkcast_arraycopy", adr_type, | |
5510 // five arguments, of which two are | |
5511 // intptr_t (jlong in LP64) | |
5512 src_start, dest_start, | |
5513 copy_length XTOP, | |
5514 check_offset XTOP, | |
5515 check_value); | |
5516 | |
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|
5517 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5518 } |
5519 | |
5520 | |
5521 // Helper function; generates code for cases requiring runtime checks. | |
5522 Node* | |
5523 LibraryCallKit::generate_generic_arraycopy(const TypePtr* adr_type, | |
5524 Node* src, Node* src_offset, | |
5525 Node* dest, Node* dest_offset, | |
2324 | 5526 Node* copy_length, bool dest_uninitialized) { |
5527 assert(!dest_uninitialized, "Invariant"); | |
0 | 5528 if (stopped()) return NULL; |
5529 address copyfunc_addr = StubRoutines::generic_arraycopy(); | |
5530 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. | |
5531 return NULL; | |
5532 } | |
5533 | |
5534 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5535 OptoRuntime::generic_arraycopy_Type(), | |
5536 copyfunc_addr, "generic_arraycopy", adr_type, | |
5537 src, src_offset, dest, dest_offset, copy_length); | |
5538 | |
6804
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|
5539 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5540 } |
5541 | |
5542 // Helper function; generates the fast out-of-line call to an arraycopy stub. | |
5543 void | |
5544 LibraryCallKit::generate_unchecked_arraycopy(const TypePtr* adr_type, | |
5545 BasicType basic_elem_type, | |
5546 bool disjoint_bases, | |
5547 Node* src, Node* src_offset, | |
5548 Node* dest, Node* dest_offset, | |
2324 | 5549 Node* copy_length, bool dest_uninitialized) { |
0 | 5550 if (stopped()) return; // nothing to do |
5551 | |
5552 Node* src_start = src; | |
5553 Node* dest_start = dest; | |
5554 if (src_offset != NULL || dest_offset != NULL) { | |
5555 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5556 src_start = array_element_address(src, src_offset, basic_elem_type); | |
5557 dest_start = array_element_address(dest, dest_offset, basic_elem_type); | |
5558 } | |
5559 | |
5560 // Figure out which arraycopy runtime method to call. | |
5561 const char* copyfunc_name = "arraycopy"; | |
5562 address copyfunc_addr = | |
5563 basictype2arraycopy(basic_elem_type, src_offset, dest_offset, | |
2324 | 5564 disjoint_bases, copyfunc_name, dest_uninitialized); |
0 | 5565 |
5566 // Call it. Note that the count_ix value is not scaled to a byte-size. | |
5567 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5568 OptoRuntime::fast_arraycopy_Type(), | |
5569 copyfunc_addr, copyfunc_name, adr_type, | |
5570 src_start, dest_start, copy_length XTOP); | |
5571 } | |
3249
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|
5572 |
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|
5573 //----------------------------inline_reference_get---------------------------- |
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|
5574 |
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|
5575 bool LibraryCallKit::inline_reference_get() { |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5576 const int nargs = 1; // self |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5577 |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5578 guarantee(java_lang_ref_Reference::referent_offset > 0, |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5579 "should have already been set"); |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5580 |
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|
5581 int referent_offset = java_lang_ref_Reference::referent_offset; |
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|
5582 |
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|
5583 // Restore the stack and pop off the argument |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5584 _sp += nargs; |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5585 Node *reference_obj = pop(); |
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|
5586 |
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|
5587 // Null check on self without removing any arguments. |
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|
5588 _sp += nargs; |
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|
5589 reference_obj = do_null_check(reference_obj, T_OBJECT); |
e1162778c1c8
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|
5590 _sp -= nargs;; |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5591 |
e1162778c1c8
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|
5592 if (stopped()) return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5593 |
e1162778c1c8
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|
5594 Node *adr = basic_plus_adr(reference_obj, reference_obj, referent_offset); |
e1162778c1c8
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|
5595 |
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|
5596 ciInstanceKlass* klass = env()->Object_klass(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5597 const TypeOopPtr* object_type = TypeOopPtr::make_from_klass(klass); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5598 |
e1162778c1c8
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|
5599 Node* no_ctrl = NULL; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5600 Node *result = make_load(no_ctrl, adr, object_type, T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5601 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5602 // Use the pre-barrier to record the value in the referent field |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5603 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
changeset
|
5604 control(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
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3255
diff
changeset
|
5605 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
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|
5606 result /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5607 T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5608 |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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6266
diff
changeset
|
5609 // Add memory barrier to prevent commoning reads from this field |
09aad8452938
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diff
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|
5610 // across safepoint since GC can change its value. |
09aad8452938
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6266
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|
5611 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
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|
5612 |
3249
e1162778c1c8
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|
5613 push(result); |
e1162778c1c8
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|
5614 return true; |
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|
5615 } |