Mercurial > hg > truffle
annotate src/share/vm/opto/callGenerator.cpp @ 3852:fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
Reviewed-by: kvn, never, bdelsart
author | twisti |
---|---|
date | Tue, 16 Aug 2011 04:14:05 -0700 |
parents | f918d6096e23 |
children | b27c72d69fd1 |
rev | line source |
---|---|
0 | 1 /* |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
1972
diff
changeset
|
2 * Copyright (c) 2000, 2011, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1265
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1265
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1265
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/bcEscapeAnalyzer.hpp" | |
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
27 #include "ci/ciCallSite.hpp" |
1972 | 28 #include "ci/ciCPCache.hpp" |
29 #include "ci/ciMethodHandle.hpp" | |
30 #include "classfile/javaClasses.hpp" | |
31 #include "compiler/compileLog.hpp" | |
32 #include "opto/addnode.hpp" | |
33 #include "opto/callGenerator.hpp" | |
34 #include "opto/callnode.hpp" | |
35 #include "opto/cfgnode.hpp" | |
36 #include "opto/connode.hpp" | |
37 #include "opto/parse.hpp" | |
38 #include "opto/rootnode.hpp" | |
39 #include "opto/runtime.hpp" | |
40 #include "opto/subnode.hpp" | |
0 | 41 |
42 CallGenerator::CallGenerator(ciMethod* method) { | |
43 _method = method; | |
44 } | |
45 | |
46 // Utility function. | |
47 const TypeFunc* CallGenerator::tf() const { | |
48 return TypeFunc::make(method()); | |
49 } | |
50 | |
51 //-----------------------------ParseGenerator--------------------------------- | |
52 // Internal class which handles all direct bytecode traversal. | |
53 class ParseGenerator : public InlineCallGenerator { | |
54 private: | |
55 bool _is_osr; | |
56 float _expected_uses; | |
57 | |
58 public: | |
59 ParseGenerator(ciMethod* method, float expected_uses, bool is_osr = false) | |
60 : InlineCallGenerator(method) | |
61 { | |
62 _is_osr = is_osr; | |
63 _expected_uses = expected_uses; | |
64 assert(can_parse(method, is_osr), "parse must be possible"); | |
65 } | |
66 | |
67 // Can we build either an OSR or a regular parser for this method? | |
68 static bool can_parse(ciMethod* method, int is_osr = false); | |
69 | |
70 virtual bool is_parse() const { return true; } | |
71 virtual JVMState* generate(JVMState* jvms); | |
72 int is_osr() { return _is_osr; } | |
73 | |
74 }; | |
75 | |
76 JVMState* ParseGenerator::generate(JVMState* jvms) { | |
77 Compile* C = Compile::current(); | |
78 | |
79 if (is_osr()) { | |
80 // The JVMS for a OSR has a single argument (see its TypeFunc). | |
81 assert(jvms->depth() == 1, "no inline OSR"); | |
82 } | |
83 | |
84 if (C->failing()) { | |
85 return NULL; // bailing out of the compile; do not try to parse | |
86 } | |
87 | |
88 Parse parser(jvms, method(), _expected_uses); | |
89 // Grab signature for matching/allocation | |
90 #ifdef ASSERT | |
91 if (parser.tf() != (parser.depth() == 1 ? C->tf() : tf())) { | |
92 MutexLockerEx ml(Compile_lock, Mutex::_no_safepoint_check_flag); | |
93 assert(C->env()->system_dictionary_modification_counter_changed(), | |
94 "Must invalidate if TypeFuncs differ"); | |
95 } | |
96 #endif | |
97 | |
98 GraphKit& exits = parser.exits(); | |
99 | |
100 if (C->failing()) { | |
101 while (exits.pop_exception_state() != NULL) ; | |
102 return NULL; | |
103 } | |
104 | |
105 assert(exits.jvms()->same_calls_as(jvms), "sanity"); | |
106 | |
107 // Simply return the exit state of the parser, | |
108 // augmented by any exceptional states. | |
109 return exits.transfer_exceptions_into_jvms(); | |
110 } | |
111 | |
112 //---------------------------DirectCallGenerator------------------------------ | |
113 // Internal class which handles all out-of-line calls w/o receiver type checks. | |
114 class DirectCallGenerator : public CallGenerator { | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
115 private: |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
116 CallStaticJavaNode* _call_node; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
117 // Force separate memory and I/O projections for the exceptional |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
118 // paths to facilitate late inlinig. |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
119 bool _separate_io_proj; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
120 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
121 public: |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
122 DirectCallGenerator(ciMethod* method, bool separate_io_proj) |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
123 : CallGenerator(method), |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
124 _separate_io_proj(separate_io_proj) |
0 | 125 { |
126 } | |
127 virtual JVMState* generate(JVMState* jvms); | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
128 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
129 CallStaticJavaNode* call_node() const { return _call_node; } |
0 | 130 }; |
131 | |
132 JVMState* DirectCallGenerator::generate(JVMState* jvms) { | |
133 GraphKit kit(jvms); | |
134 bool is_static = method()->is_static(); | |
135 address target = is_static ? SharedRuntime::get_resolve_static_call_stub() | |
136 : SharedRuntime::get_resolve_opt_virtual_call_stub(); | |
137 | |
138 if (kit.C->log() != NULL) { | |
139 kit.C->log()->elem("direct_call bci='%d'", jvms->bci()); | |
140 } | |
141 | |
142 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), target, method(), kit.bci()); | |
143 if (!is_static) { | |
144 // Make an explicit receiver null_check as part of this call. | |
145 // Since we share a map with the caller, his JVMS gets adjusted. | |
146 kit.null_check_receiver(method()); | |
147 if (kit.stopped()) { | |
148 // And dump it back to the caller, decorated with any exceptions: | |
149 return kit.transfer_exceptions_into_jvms(); | |
150 } | |
151 // Mark the call node as virtual, sort of: | |
152 call->set_optimized_virtual(true); | |
1265 | 153 if (method()->is_method_handle_invoke()) { |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
154 call->set_method_handle_invoke(true); |
1265 | 155 kit.C->set_has_method_handle_invokes(true); |
156 } | |
0 | 157 } |
158 kit.set_arguments_for_java_call(call); | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
159 kit.set_edges_for_java_call(call, false, _separate_io_proj); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
160 Node* ret = kit.set_results_for_java_call(call, _separate_io_proj); |
0 | 161 kit.push_node(method()->return_type()->basic_type(), ret); |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
162 _call_node = call; // Save the call node in case we need it later |
0 | 163 return kit.transfer_exceptions_into_jvms(); |
164 } | |
165 | |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
166 //---------------------------DynamicCallGenerator----------------------------- |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
167 // Internal class which handles all out-of-line invokedynamic calls. |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
168 class DynamicCallGenerator : public CallGenerator { |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
169 public: |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
170 DynamicCallGenerator(ciMethod* method) |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
171 : CallGenerator(method) |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
172 { |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
173 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
174 virtual JVMState* generate(JVMState* jvms); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
175 }; |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
176 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
177 JVMState* DynamicCallGenerator::generate(JVMState* jvms) { |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
178 GraphKit kit(jvms); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
179 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
180 if (kit.C->log() != NULL) { |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
181 kit.C->log()->elem("dynamic_call bci='%d'", jvms->bci()); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
182 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
183 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
184 // Get the constant pool cache from the caller class. |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
185 ciMethod* caller_method = jvms->method(); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
186 ciBytecodeStream str(caller_method); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
187 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
188 assert(str.cur_bc() == Bytecodes::_invokedynamic, "wrong place to issue a dynamic call!"); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
189 ciCPCache* cpcache = str.get_cpcache(); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
190 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
191 // Get the offset of the CallSite from the constant pool cache |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
192 // pointer. |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
193 int index = str.get_method_index(); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
194 size_t call_site_offset = cpcache->get_f1_offset(index); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
195 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
196 // Load the CallSite object from the constant pool cache. |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
197 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
198 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
199 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
200 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
201 |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
202 // Load the target MethodHandle from the CallSite object. |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
1972
diff
changeset
|
203 Node* target_mh_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
204 Node* target_mh = kit.make_load(kit.control(), target_mh_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
205 |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
206 address resolve_stub = SharedRuntime::get_resolve_opt_virtual_call_stub(); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
207 |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
208 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), resolve_stub, method(), kit.bci()); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
209 // invokedynamic is treated as an optimized invokevirtual. |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
210 call->set_optimized_virtual(true); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
211 // Take extra care (in the presence of argument motion) not to trash the SP: |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
212 call->set_method_handle_invoke(true); |
1265 | 213 kit.C->set_has_method_handle_invokes(true); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
214 |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
215 // Pass the target MethodHandle as first argument and shift the |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
216 // other arguments. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
217 call->init_req(0 + TypeFunc::Parms, target_mh); |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
218 uint nargs = call->method()->arg_size(); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
219 for (uint i = 1; i < nargs; i++) { |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
220 Node* arg = kit.argument(i - 1); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
221 call->init_req(i + TypeFunc::Parms, arg); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
222 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
223 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
224 kit.set_edges_for_java_call(call); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
225 Node* ret = kit.set_results_for_java_call(call); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
226 kit.push_node(method()->return_type()->basic_type(), ret); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
227 return kit.transfer_exceptions_into_jvms(); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
228 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
229 |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
230 //--------------------------VirtualCallGenerator------------------------------ |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
231 // Internal class which handles all out-of-line calls checking receiver type. |
0 | 232 class VirtualCallGenerator : public CallGenerator { |
233 private: | |
234 int _vtable_index; | |
235 public: | |
236 VirtualCallGenerator(ciMethod* method, int vtable_index) | |
237 : CallGenerator(method), _vtable_index(vtable_index) | |
238 { | |
239 assert(vtable_index == methodOopDesc::invalid_vtable_index || | |
240 vtable_index >= 0, "either invalid or usable"); | |
241 } | |
242 virtual bool is_virtual() const { return true; } | |
243 virtual JVMState* generate(JVMState* jvms); | |
244 }; | |
245 | |
246 JVMState* VirtualCallGenerator::generate(JVMState* jvms) { | |
247 GraphKit kit(jvms); | |
248 Node* receiver = kit.argument(0); | |
249 | |
250 if (kit.C->log() != NULL) { | |
251 kit.C->log()->elem("virtual_call bci='%d'", jvms->bci()); | |
252 } | |
253 | |
254 // If the receiver is a constant null, do not torture the system | |
255 // by attempting to call through it. The compile will proceed | |
256 // correctly, but may bail out in final_graph_reshaping, because | |
257 // the call instruction will have a seemingly deficient out-count. | |
258 // (The bailout says something misleading about an "infinite loop".) | |
259 if (kit.gvn().type(receiver)->higher_equal(TypePtr::NULL_PTR)) { | |
260 kit.inc_sp(method()->arg_size()); // restore arguments | |
261 kit.uncommon_trap(Deoptimization::Reason_null_check, | |
262 Deoptimization::Action_none, | |
263 NULL, "null receiver"); | |
264 return kit.transfer_exceptions_into_jvms(); | |
265 } | |
266 | |
267 // Ideally we would unconditionally do a null check here and let it | |
268 // be converted to an implicit check based on profile information. | |
269 // However currently the conversion to implicit null checks in | |
270 // Block::implicit_null_check() only looks for loads and stores, not calls. | |
271 ciMethod *caller = kit.method(); | |
272 ciMethodData *caller_md = (caller == NULL) ? NULL : caller->method_data(); | |
273 if (!UseInlineCaches || !ImplicitNullChecks || | |
274 ((ImplicitNullCheckThreshold > 0) && caller_md && | |
275 (caller_md->trap_count(Deoptimization::Reason_null_check) | |
276 >= (uint)ImplicitNullCheckThreshold))) { | |
277 // Make an explicit receiver null_check as part of this call. | |
278 // Since we share a map with the caller, his JVMS gets adjusted. | |
279 receiver = kit.null_check_receiver(method()); | |
280 if (kit.stopped()) { | |
281 // And dump it back to the caller, decorated with any exceptions: | |
282 return kit.transfer_exceptions_into_jvms(); | |
283 } | |
284 } | |
285 | |
286 assert(!method()->is_static(), "virtual call must not be to static"); | |
287 assert(!method()->is_final(), "virtual call should not be to final"); | |
288 assert(!method()->is_private(), "virtual call should not be to private"); | |
289 assert(_vtable_index == methodOopDesc::invalid_vtable_index || !UseInlineCaches, | |
290 "no vtable calls if +UseInlineCaches "); | |
291 address target = SharedRuntime::get_resolve_virtual_call_stub(); | |
292 // Normal inline cache used for call | |
293 CallDynamicJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallDynamicJavaNode(tf(), target, method(), _vtable_index, kit.bci()); | |
294 kit.set_arguments_for_java_call(call); | |
295 kit.set_edges_for_java_call(call); | |
296 Node* ret = kit.set_results_for_java_call(call); | |
297 kit.push_node(method()->return_type()->basic_type(), ret); | |
298 | |
299 // Represent the effect of an implicit receiver null_check | |
300 // as part of this call. Since we share a map with the caller, | |
301 // his JVMS gets adjusted. | |
302 kit.cast_not_null(receiver); | |
303 return kit.transfer_exceptions_into_jvms(); | |
304 } | |
305 | |
306 bool ParseGenerator::can_parse(ciMethod* m, int entry_bci) { | |
307 // Certain methods cannot be parsed at all: | |
308 if (!m->can_be_compiled()) return false; | |
309 if (!m->has_balanced_monitors()) return false; | |
310 if (m->get_flow_analysis()->failing()) return false; | |
311 | |
312 // (Methods may bail out for other reasons, after the parser is run. | |
313 // We try to avoid this, but if forced, we must return (Node*)NULL. | |
314 // The user of the CallGenerator must check for this condition.) | |
315 return true; | |
316 } | |
317 | |
318 CallGenerator* CallGenerator::for_inline(ciMethod* m, float expected_uses) { | |
319 if (!ParseGenerator::can_parse(m)) return NULL; | |
320 return new ParseGenerator(m, expected_uses); | |
321 } | |
322 | |
323 // As a special case, the JVMS passed to this CallGenerator is | |
324 // for the method execution already in progress, not just the JVMS | |
325 // of the caller. Thus, this CallGenerator cannot be mixed with others! | |
326 CallGenerator* CallGenerator::for_osr(ciMethod* m, int osr_bci) { | |
327 if (!ParseGenerator::can_parse(m, true)) return NULL; | |
328 float past_uses = m->interpreter_invocation_count(); | |
329 float expected_uses = past_uses; | |
330 return new ParseGenerator(m, expected_uses, true); | |
331 } | |
332 | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
333 CallGenerator* CallGenerator::for_direct_call(ciMethod* m, bool separate_io_proj) { |
0 | 334 assert(!m->is_abstract(), "for_direct_call mismatch"); |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
335 return new DirectCallGenerator(m, separate_io_proj); |
0 | 336 } |
337 | |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
338 CallGenerator* CallGenerator::for_dynamic_call(ciMethod* m) { |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
339 assert(m->is_method_handle_invoke(), "for_dynamic_call mismatch"); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
340 return new DynamicCallGenerator(m); |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
341 } |
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
342 |
0 | 343 CallGenerator* CallGenerator::for_virtual_call(ciMethod* m, int vtable_index) { |
344 assert(!m->is_static(), "for_virtual_call mismatch"); | |
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
345 assert(!m->is_method_handle_invoke(), "should be a direct call"); |
0 | 346 return new VirtualCallGenerator(m, vtable_index); |
347 } | |
348 | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
349 // Allow inlining decisions to be delayed |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
350 class LateInlineCallGenerator : public DirectCallGenerator { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
351 CallGenerator* _inline_cg; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
352 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
353 public: |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
354 LateInlineCallGenerator(ciMethod* method, CallGenerator* inline_cg) : |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
355 DirectCallGenerator(method, true), _inline_cg(inline_cg) {} |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
356 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
357 virtual bool is_late_inline() const { return true; } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
358 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
359 // Convert the CallStaticJava into an inline |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
360 virtual void do_late_inline(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
361 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
362 JVMState* generate(JVMState* jvms) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
363 // Record that this call site should be revisited once the main |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
364 // parse is finished. |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
365 Compile::current()->add_late_inline(this); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
366 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
367 // Emit the CallStaticJava and request separate projections so |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
368 // that the late inlining logic can distinguish between fall |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
369 // through and exceptional uses of the memory and io projections |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
370 // as is done for allocations and macro expansion. |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
371 return DirectCallGenerator::generate(jvms); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
372 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
373 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
374 }; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
375 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
376 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
377 void LateInlineCallGenerator::do_late_inline() { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
378 // Can't inline it |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
379 if (call_node() == NULL || call_node()->outcnt() == 0 || |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
380 call_node()->in(0) == NULL || call_node()->in(0)->is_top()) |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
381 return; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
382 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
383 CallStaticJavaNode* call = call_node(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
384 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
385 // Make a clone of the JVMState that appropriate to use for driving a parse |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
386 Compile* C = Compile::current(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
387 JVMState* jvms = call->jvms()->clone_shallow(C); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
388 uint size = call->req(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
389 SafePointNode* map = new (C, size) SafePointNode(size, jvms); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
390 for (uint i1 = 0; i1 < size; i1++) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
391 map->init_req(i1, call->in(i1)); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
392 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
393 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
394 // Make sure the state is a MergeMem for parsing. |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
395 if (!map->in(TypeFunc::Memory)->is_MergeMem()) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
396 map->set_req(TypeFunc::Memory, MergeMemNode::make(C, map->in(TypeFunc::Memory))); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
397 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
398 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
399 // Make enough space for the expression stack and transfer the incoming arguments |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
400 int nargs = method()->arg_size(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
401 jvms->set_map(map); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
402 map->ensure_stack(jvms, jvms->method()->max_stack()); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
403 if (nargs > 0) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
404 for (int i1 = 0; i1 < nargs; i1++) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
405 map->set_req(i1 + jvms->argoff(), call->in(TypeFunc::Parms + i1)); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
406 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
407 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
408 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
409 CompileLog* log = C->log(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
410 if (log != NULL) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
411 log->head("late_inline method='%d'", log->identify(method())); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
412 JVMState* p = jvms; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
413 while (p != NULL) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
414 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method())); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
415 p = p->caller(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
416 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
417 log->tail("late_inline"); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
418 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
419 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
420 // Setup default node notes to be picked up by the inlining |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
421 Node_Notes* old_nn = C->default_node_notes(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
422 if (old_nn != NULL) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
423 Node_Notes* entry_nn = old_nn->clone(C); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
424 entry_nn->set_jvms(jvms); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
425 C->set_default_node_notes(entry_nn); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
426 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
427 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
428 // Now perform the inling using the synthesized JVMState |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
429 JVMState* new_jvms = _inline_cg->generate(jvms); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
430 if (new_jvms == NULL) return; // no change |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
431 if (C->failing()) return; |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
432 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
433 // Capture any exceptional control flow |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
434 GraphKit kit(new_jvms); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
435 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
436 // Find the result object |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
437 Node* result = C->top(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
438 int result_size = method()->return_type()->size(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
439 if (result_size != 0 && !kit.stopped()) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
440 result = (result_size == 1) ? kit.pop() : kit.pop_pair(); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
441 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
442 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
443 kit.replace_call(call, result); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
444 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
445 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
446 |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
447 CallGenerator* CallGenerator::for_late_inline(ciMethod* method, CallGenerator* inline_cg) { |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
448 return new LateInlineCallGenerator(method, inline_cg); |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
449 } |
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
450 |
0 | 451 |
452 //---------------------------WarmCallGenerator-------------------------------- | |
453 // Internal class which handles initial deferral of inlining decisions. | |
454 class WarmCallGenerator : public CallGenerator { | |
455 WarmCallInfo* _call_info; | |
456 CallGenerator* _if_cold; | |
457 CallGenerator* _if_hot; | |
458 bool _is_virtual; // caches virtuality of if_cold | |
459 bool _is_inline; // caches inline-ness of if_hot | |
460 | |
461 public: | |
462 WarmCallGenerator(WarmCallInfo* ci, | |
463 CallGenerator* if_cold, | |
464 CallGenerator* if_hot) | |
465 : CallGenerator(if_cold->method()) | |
466 { | |
467 assert(method() == if_hot->method(), "consistent choices"); | |
468 _call_info = ci; | |
469 _if_cold = if_cold; | |
470 _if_hot = if_hot; | |
471 _is_virtual = if_cold->is_virtual(); | |
472 _is_inline = if_hot->is_inline(); | |
473 } | |
474 | |
475 virtual bool is_inline() const { return _is_inline; } | |
476 virtual bool is_virtual() const { return _is_virtual; } | |
477 virtual bool is_deferred() const { return true; } | |
478 | |
479 virtual JVMState* generate(JVMState* jvms); | |
480 }; | |
481 | |
482 | |
483 CallGenerator* CallGenerator::for_warm_call(WarmCallInfo* ci, | |
484 CallGenerator* if_cold, | |
485 CallGenerator* if_hot) { | |
486 return new WarmCallGenerator(ci, if_cold, if_hot); | |
487 } | |
488 | |
489 JVMState* WarmCallGenerator::generate(JVMState* jvms) { | |
490 Compile* C = Compile::current(); | |
491 if (C->log() != NULL) { | |
492 C->log()->elem("warm_call bci='%d'", jvms->bci()); | |
493 } | |
494 jvms = _if_cold->generate(jvms); | |
495 if (jvms != NULL) { | |
496 Node* m = jvms->map()->control(); | |
497 if (m->is_CatchProj()) m = m->in(0); else m = C->top(); | |
498 if (m->is_Catch()) m = m->in(0); else m = C->top(); | |
499 if (m->is_Proj()) m = m->in(0); else m = C->top(); | |
500 if (m->is_CallJava()) { | |
501 _call_info->set_call(m->as_Call()); | |
502 _call_info->set_hot_cg(_if_hot); | |
503 #ifndef PRODUCT | |
504 if (PrintOpto || PrintOptoInlining) { | |
505 tty->print_cr("Queueing for warm inlining at bci %d:", jvms->bci()); | |
506 tty->print("WCI: "); | |
507 _call_info->print(); | |
508 } | |
509 #endif | |
510 _call_info->set_heat(_call_info->compute_heat()); | |
511 C->set_warm_calls(_call_info->insert_into(C->warm_calls())); | |
512 } | |
513 } | |
514 return jvms; | |
515 } | |
516 | |
517 void WarmCallInfo::make_hot() { | |
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
337
diff
changeset
|
518 Unimplemented(); |
0 | 519 } |
520 | |
521 void WarmCallInfo::make_cold() { | |
522 // No action: Just dequeue. | |
523 } | |
524 | |
525 | |
526 //------------------------PredictedCallGenerator------------------------------ | |
527 // Internal class which handles all out-of-line calls checking receiver type. | |
528 class PredictedCallGenerator : public CallGenerator { | |
529 ciKlass* _predicted_receiver; | |
530 CallGenerator* _if_missed; | |
531 CallGenerator* _if_hit; | |
532 float _hit_prob; | |
533 | |
534 public: | |
535 PredictedCallGenerator(ciKlass* predicted_receiver, | |
536 CallGenerator* if_missed, | |
537 CallGenerator* if_hit, float hit_prob) | |
538 : CallGenerator(if_missed->method()) | |
539 { | |
540 // The call profile data may predict the hit_prob as extreme as 0 or 1. | |
541 // Remove the extremes values from the range. | |
542 if (hit_prob > PROB_MAX) hit_prob = PROB_MAX; | |
543 if (hit_prob < PROB_MIN) hit_prob = PROB_MIN; | |
544 | |
545 _predicted_receiver = predicted_receiver; | |
546 _if_missed = if_missed; | |
547 _if_hit = if_hit; | |
548 _hit_prob = hit_prob; | |
549 } | |
550 | |
551 virtual bool is_virtual() const { return true; } | |
552 virtual bool is_inline() const { return _if_hit->is_inline(); } | |
553 virtual bool is_deferred() const { return _if_hit->is_deferred(); } | |
554 | |
555 virtual JVMState* generate(JVMState* jvms); | |
556 }; | |
557 | |
558 | |
559 CallGenerator* CallGenerator::for_predicted_call(ciKlass* predicted_receiver, | |
560 CallGenerator* if_missed, | |
561 CallGenerator* if_hit, | |
562 float hit_prob) { | |
563 return new PredictedCallGenerator(predicted_receiver, if_missed, if_hit, hit_prob); | |
564 } | |
565 | |
566 | |
567 JVMState* PredictedCallGenerator::generate(JVMState* jvms) { | |
568 GraphKit kit(jvms); | |
569 PhaseGVN& gvn = kit.gvn(); | |
570 // We need an explicit receiver null_check before checking its type. | |
571 // We share a map with the caller, so his JVMS gets adjusted. | |
572 Node* receiver = kit.argument(0); | |
573 | |
574 CompileLog* log = kit.C->log(); | |
575 if (log != NULL) { | |
576 log->elem("predicted_call bci='%d' klass='%d'", | |
577 jvms->bci(), log->identify(_predicted_receiver)); | |
578 } | |
579 | |
580 receiver = kit.null_check_receiver(method()); | |
581 if (kit.stopped()) { | |
582 return kit.transfer_exceptions_into_jvms(); | |
583 } | |
584 | |
585 Node* exact_receiver = receiver; // will get updated in place... | |
586 Node* slow_ctl = kit.type_check_receiver(receiver, | |
587 _predicted_receiver, _hit_prob, | |
588 &exact_receiver); | |
589 | |
590 SafePointNode* slow_map = NULL; | |
591 JVMState* slow_jvms; | |
592 { PreserveJVMState pjvms(&kit); | |
593 kit.set_control(slow_ctl); | |
594 if (!kit.stopped()) { | |
595 slow_jvms = _if_missed->generate(kit.sync_jvms()); | |
596 assert(slow_jvms != NULL, "miss path must not fail to generate"); | |
597 kit.add_exception_states_from(slow_jvms); | |
598 kit.set_map(slow_jvms->map()); | |
599 if (!kit.stopped()) | |
600 slow_map = kit.stop(); | |
601 } | |
602 } | |
603 | |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
0
diff
changeset
|
604 if (kit.stopped()) { |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
0
diff
changeset
|
605 // Instance exactly does not matches the desired type. |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
0
diff
changeset
|
606 kit.set_jvms(slow_jvms); |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
0
diff
changeset
|
607 return kit.transfer_exceptions_into_jvms(); |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
0
diff
changeset
|
608 } |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents:
0
diff
changeset
|
609 |
0 | 610 // fall through if the instance exactly matches the desired type |
611 kit.replace_in_map(receiver, exact_receiver); | |
612 | |
613 // Make the hot call: | |
614 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); | |
615 if (new_jvms == NULL) { | |
616 // Inline failed, so make a direct call. | |
617 assert(_if_hit->is_inline(), "must have been a failed inline"); | |
618 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); | |
619 new_jvms = cg->generate(kit.sync_jvms()); | |
620 } | |
621 kit.add_exception_states_from(new_jvms); | |
622 kit.set_jvms(new_jvms); | |
623 | |
624 // Need to merge slow and fast? | |
625 if (slow_map == NULL) { | |
626 // The fast path is the only path remaining. | |
627 return kit.transfer_exceptions_into_jvms(); | |
628 } | |
629 | |
630 if (kit.stopped()) { | |
631 // Inlined method threw an exception, so it's just the slow path after all. | |
632 kit.set_jvms(slow_jvms); | |
633 return kit.transfer_exceptions_into_jvms(); | |
634 } | |
635 | |
636 // Finish the diamond. | |
637 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization | |
638 RegionNode* region = new (kit.C, 3) RegionNode(3); | |
639 region->init_req(1, kit.control()); | |
640 region->init_req(2, slow_map->control()); | |
641 kit.set_control(gvn.transform(region)); | |
642 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); | |
643 iophi->set_req(2, slow_map->i_o()); | |
644 kit.set_i_o(gvn.transform(iophi)); | |
645 kit.merge_memory(slow_map->merged_memory(), region, 2); | |
646 uint tos = kit.jvms()->stkoff() + kit.sp(); | |
647 uint limit = slow_map->req(); | |
648 for (uint i = TypeFunc::Parms; i < limit; i++) { | |
649 // Skip unused stack slots; fast forward to monoff(); | |
650 if (i == tos) { | |
651 i = kit.jvms()->monoff(); | |
652 if( i >= limit ) break; | |
653 } | |
654 Node* m = kit.map()->in(i); | |
655 Node* n = slow_map->in(i); | |
656 if (m != n) { | |
657 const Type* t = gvn.type(m)->meet(gvn.type(n)); | |
658 Node* phi = PhiNode::make(region, m, t); | |
659 phi->set_req(2, n); | |
660 kit.map()->set_req(i, gvn.transform(phi)); | |
661 } | |
662 } | |
663 return kit.transfer_exceptions_into_jvms(); | |
664 } | |
665 | |
666 | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
667 //------------------------PredictedDynamicCallGenerator----------------------- |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
668 // Internal class which handles all out-of-line calls checking receiver type. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
669 class PredictedDynamicCallGenerator : public CallGenerator { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
670 ciMethodHandle* _predicted_method_handle; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
671 CallGenerator* _if_missed; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
672 CallGenerator* _if_hit; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
673 float _hit_prob; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
674 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
675 public: |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
676 PredictedDynamicCallGenerator(ciMethodHandle* predicted_method_handle, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
677 CallGenerator* if_missed, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
678 CallGenerator* if_hit, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
679 float hit_prob) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
680 : CallGenerator(if_missed->method()), |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
681 _predicted_method_handle(predicted_method_handle), |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
682 _if_missed(if_missed), |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
683 _if_hit(if_hit), |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
684 _hit_prob(hit_prob) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
685 {} |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
686 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
687 virtual bool is_inline() const { return _if_hit->is_inline(); } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
688 virtual bool is_deferred() const { return _if_hit->is_deferred(); } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
689 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
690 virtual JVMState* generate(JVMState* jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
691 }; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
692 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
693 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
694 CallGenerator* CallGenerator::for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
695 CallGenerator* if_missed, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
696 CallGenerator* if_hit, |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
697 float hit_prob) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
698 return new PredictedDynamicCallGenerator(predicted_method_handle, if_missed, if_hit, hit_prob); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
699 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
700 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
701 |
3752
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
702 CallGenerator* CallGenerator::for_method_handle_inline(Node* method_handle, JVMState* jvms, |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
703 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
704 if (method_handle->Opcode() == Op_ConP) { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
705 const TypeOopPtr* oop_ptr = method_handle->bottom_type()->is_oopptr(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
706 ciObject* const_oop = oop_ptr->const_oop(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
707 ciMethodHandle* method_handle = const_oop->as_method_handle(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
708 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
709 // Set the callee to have access to the class and signature in |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
710 // the MethodHandleCompiler. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
711 method_handle->set_callee(callee); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
712 method_handle->set_caller(caller); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
713 method_handle->set_call_profile(profile); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
714 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
715 // Get an adapter for the MethodHandle. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
716 ciMethod* target_method = method_handle->get_method_handle_adapter(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
717 if (target_method != NULL) { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
718 CallGenerator* hit_cg = Compile::current()->call_generator(target_method, -1, false, jvms, true, 1); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
719 if (hit_cg != NULL && hit_cg->is_inline()) |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
720 return hit_cg; |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
721 } |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
722 } else if (method_handle->Opcode() == Op_Phi && method_handle->req() == 3 && |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
723 method_handle->in(1)->Opcode() == Op_ConP && method_handle->in(2)->Opcode() == Op_ConP) { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
724 // selectAlternative idiom merging two constant MethodHandles. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
725 // Generate a guard so that each can be inlined. We might want to |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
726 // do more inputs at later point but this gets the most common |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
727 // case. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
728 const TypeOopPtr* oop_ptr = method_handle->in(1)->bottom_type()->is_oopptr(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
729 ciObject* const_oop = oop_ptr->const_oop(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
730 ciMethodHandle* mh = const_oop->as_method_handle(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
731 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
732 CallGenerator* cg1 = for_method_handle_inline(method_handle->in(1), jvms, caller, callee, profile); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
733 CallGenerator* cg2 = for_method_handle_inline(method_handle->in(2), jvms, caller, callee, profile); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
734 if (cg1 != NULL && cg2 != NULL) { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
735 return new PredictedDynamicCallGenerator(mh, cg2, cg1, PROB_FAIR); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
736 } |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
737 } |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
738 return NULL; |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
739 } |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
740 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
741 |
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
742 CallGenerator* CallGenerator::for_invokedynamic_inline(ciCallSite* call_site, JVMState* jvms, |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
743 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
744 assert(call_site->is_constant_call_site() || call_site->is_mutable_call_site(), "must be"); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
745 ciMethodHandle* method_handle = call_site->get_target(); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
746 |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
747 // Set the callee to have access to the class and signature in the |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
748 // MethodHandleCompiler. |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
749 method_handle->set_callee(callee); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
750 method_handle->set_caller(caller); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
751 method_handle->set_call_profile(profile); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
752 |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
753 // Get an adapter for the MethodHandle. |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
754 ciMethod* target_method = method_handle->get_invokedynamic_adapter(); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
755 if (target_method != NULL) { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
756 Compile *C = Compile::current(); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
757 CallGenerator* hit_cg = C->call_generator(target_method, -1, false, jvms, true, PROB_ALWAYS); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
758 if (hit_cg != NULL && hit_cg->is_inline()) { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
759 // Add a dependence for invalidation of the optimization. |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
760 if (call_site->is_mutable_call_site()) { |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
761 C->dependencies()->assert_call_site_target_value(C->env()->CallSite_klass(), call_site, method_handle); |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
762 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
763 return hit_cg; |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
764 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
765 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
766 return NULL; |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
767 } |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
768 |
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
3752
diff
changeset
|
769 |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
770 JVMState* PredictedDynamicCallGenerator::generate(JVMState* jvms) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
771 GraphKit kit(jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
772 PhaseGVN& gvn = kit.gvn(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
773 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
774 CompileLog* log = kit.C->log(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
775 if (log != NULL) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
776 log->elem("predicted_dynamic_call bci='%d'", jvms->bci()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
777 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
778 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
779 const TypeOopPtr* predicted_mh_ptr = TypeOopPtr::make_from_constant(_predicted_method_handle, true); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
780 Node* predicted_mh = kit.makecon(predicted_mh_ptr); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
781 |
3752
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
782 Node* bol = NULL; |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
783 int bc = jvms->method()->java_code_at_bci(jvms->bci()); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
784 if (bc == Bytecodes::_invokespecial) { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
785 // This is the selectAlternative idiom for guardWithTest |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
786 Node* receiver = kit.argument(0); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
787 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
788 // Check if the MethodHandle is the expected one |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
789 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(receiver, predicted_mh)); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
790 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
791 } else { |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
792 assert(bc == Bytecodes::_invokedynamic, "must be"); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
793 // Get the constant pool cache from the caller class. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
794 ciMethod* caller_method = jvms->method(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
795 ciBytecodeStream str(caller_method); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
796 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
797 ciCPCache* cpcache = str.get_cpcache(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
798 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
799 // Get the offset of the CallSite from the constant pool cache |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
800 // pointer. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
801 int index = str.get_method_index(); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
802 size_t call_site_offset = cpcache->get_f1_offset(index); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
803 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
804 // Load the CallSite object from the constant pool cache. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
805 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
806 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
807 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
808 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
809 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
810 // Load the target MethodHandle from the CallSite object. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
811 Node* target_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
812 Node* target_mh = kit.make_load(kit.control(), target_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
813 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
814 // Check if the MethodHandle is still the same. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
815 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(target_mh, predicted_mh)); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
816 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
817 } |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
818 IfNode* iff = kit.create_and_xform_if(kit.control(), bol, _hit_prob, COUNT_UNKNOWN); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
819 kit.set_control( gvn.transform(new(kit.C, 1) IfTrueNode (iff))); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
820 Node* slow_ctl = gvn.transform(new(kit.C, 1) IfFalseNode(iff)); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
821 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
822 SafePointNode* slow_map = NULL; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
823 JVMState* slow_jvms; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
824 { PreserveJVMState pjvms(&kit); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
825 kit.set_control(slow_ctl); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
826 if (!kit.stopped()) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
827 slow_jvms = _if_missed->generate(kit.sync_jvms()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
828 assert(slow_jvms != NULL, "miss path must not fail to generate"); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
829 kit.add_exception_states_from(slow_jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
830 kit.set_map(slow_jvms->map()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
831 if (!kit.stopped()) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
832 slow_map = kit.stop(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
833 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
834 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
835 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
836 if (kit.stopped()) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
837 // Instance exactly does not matches the desired type. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
838 kit.set_jvms(slow_jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
839 return kit.transfer_exceptions_into_jvms(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
840 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
841 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
842 // Make the hot call: |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
843 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
844 if (new_jvms == NULL) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
845 // Inline failed, so make a direct call. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
846 assert(_if_hit->is_inline(), "must have been a failed inline"); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
847 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
848 new_jvms = cg->generate(kit.sync_jvms()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
849 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
850 kit.add_exception_states_from(new_jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
851 kit.set_jvms(new_jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
852 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
853 // Need to merge slow and fast? |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
854 if (slow_map == NULL) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
855 // The fast path is the only path remaining. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
856 return kit.transfer_exceptions_into_jvms(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
857 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
858 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
859 if (kit.stopped()) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
860 // Inlined method threw an exception, so it's just the slow path after all. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
861 kit.set_jvms(slow_jvms); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
862 return kit.transfer_exceptions_into_jvms(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
863 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
864 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
865 // Finish the diamond. |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
866 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
867 RegionNode* region = new (kit.C, 3) RegionNode(3); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
868 region->init_req(1, kit.control()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
869 region->init_req(2, slow_map->control()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
870 kit.set_control(gvn.transform(region)); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
871 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
872 iophi->set_req(2, slow_map->i_o()); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
873 kit.set_i_o(gvn.transform(iophi)); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
874 kit.merge_memory(slow_map->merged_memory(), region, 2); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
875 uint tos = kit.jvms()->stkoff() + kit.sp(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
876 uint limit = slow_map->req(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
877 for (uint i = TypeFunc::Parms; i < limit; i++) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
878 // Skip unused stack slots; fast forward to monoff(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
879 if (i == tos) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
880 i = kit.jvms()->monoff(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
881 if( i >= limit ) break; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
882 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
883 Node* m = kit.map()->in(i); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
884 Node* n = slow_map->in(i); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
885 if (m != n) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
886 const Type* t = gvn.type(m)->meet(gvn.type(n)); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
887 Node* phi = PhiNode::make(region, m, t); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
888 phi->set_req(2, n); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
889 kit.map()->set_req(i, gvn.transform(phi)); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
890 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
891 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
892 return kit.transfer_exceptions_into_jvms(); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
893 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
894 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
895 |
0 | 896 //-------------------------UncommonTrapCallGenerator----------------------------- |
897 // Internal class which handles all out-of-line calls checking receiver type. | |
898 class UncommonTrapCallGenerator : public CallGenerator { | |
899 Deoptimization::DeoptReason _reason; | |
900 Deoptimization::DeoptAction _action; | |
901 | |
902 public: | |
903 UncommonTrapCallGenerator(ciMethod* m, | |
904 Deoptimization::DeoptReason reason, | |
905 Deoptimization::DeoptAction action) | |
906 : CallGenerator(m) | |
907 { | |
908 _reason = reason; | |
909 _action = action; | |
910 } | |
911 | |
912 virtual bool is_virtual() const { ShouldNotReachHere(); return false; } | |
913 virtual bool is_trap() const { return true; } | |
914 | |
915 virtual JVMState* generate(JVMState* jvms); | |
916 }; | |
917 | |
918 | |
919 CallGenerator* | |
920 CallGenerator::for_uncommon_trap(ciMethod* m, | |
921 Deoptimization::DeoptReason reason, | |
922 Deoptimization::DeoptAction action) { | |
923 return new UncommonTrapCallGenerator(m, reason, action); | |
924 } | |
925 | |
926 | |
927 JVMState* UncommonTrapCallGenerator::generate(JVMState* jvms) { | |
928 GraphKit kit(jvms); | |
929 // Take the trap with arguments pushed on the stack. (Cf. null_check_receiver). | |
930 int nargs = method()->arg_size(); | |
931 kit.inc_sp(nargs); | |
932 assert(nargs <= kit.sp() && kit.sp() <= jvms->stk_size(), "sane sp w/ args pushed"); | |
933 if (_reason == Deoptimization::Reason_class_check && | |
934 _action == Deoptimization::Action_maybe_recompile) { | |
935 // Temp fix for 6529811 | |
936 // Don't allow uncommon_trap to override our decision to recompile in the event | |
937 // of a class cast failure for a monomorphic call as it will never let us convert | |
938 // the call to either bi-morphic or megamorphic and can lead to unc-trap loops | |
939 bool keep_exact_action = true; | |
940 kit.uncommon_trap(_reason, _action, NULL, "monomorphic vcall checkcast", false, keep_exact_action); | |
941 } else { | |
942 kit.uncommon_trap(_reason, _action); | |
943 } | |
944 return kit.transfer_exceptions_into_jvms(); | |
945 } | |
946 | |
947 // (Note: Moved hook_up_call to GraphKit::set_edges_for_java_call.) | |
948 | |
949 // (Node: Merged hook_up_exits into ParseGenerator::generate.) | |
950 | |
951 #define NODES_OVERHEAD_PER_METHOD (30.0) | |
952 #define NODES_PER_BYTECODE (9.5) | |
953 | |
954 void WarmCallInfo::init(JVMState* call_site, ciMethod* call_method, ciCallProfile& profile, float prof_factor) { | |
955 int call_count = profile.count(); | |
956 int code_size = call_method->code_size(); | |
957 | |
958 // Expected execution count is based on the historical count: | |
959 _count = call_count < 0 ? 1 : call_site->method()->scale_count(call_count, prof_factor); | |
960 | |
961 // Expected profit from inlining, in units of simple call-overheads. | |
962 _profit = 1.0; | |
963 | |
964 // Expected work performed by the call in units of call-overheads. | |
965 // %%% need an empirical curve fit for "work" (time in call) | |
966 float bytecodes_per_call = 3; | |
967 _work = 1.0 + code_size / bytecodes_per_call; | |
968 | |
969 // Expected size of compilation graph: | |
970 // -XX:+PrintParseStatistics once reported: | |
971 // Methods seen: 9184 Methods parsed: 9184 Nodes created: 1582391 | |
972 // Histogram of 144298 parsed bytecodes: | |
973 // %%% Need an better predictor for graph size. | |
974 _size = NODES_OVERHEAD_PER_METHOD + (NODES_PER_BYTECODE * code_size); | |
975 } | |
976 | |
977 // is_cold: Return true if the node should never be inlined. | |
978 // This is true if any of the key metrics are extreme. | |
979 bool WarmCallInfo::is_cold() const { | |
980 if (count() < WarmCallMinCount) return true; | |
981 if (profit() < WarmCallMinProfit) return true; | |
982 if (work() > WarmCallMaxWork) return true; | |
983 if (size() > WarmCallMaxSize) return true; | |
984 return false; | |
985 } | |
986 | |
987 // is_hot: Return true if the node should be inlined immediately. | |
988 // This is true if any of the key metrics are extreme. | |
989 bool WarmCallInfo::is_hot() const { | |
990 assert(!is_cold(), "eliminate is_cold cases before testing is_hot"); | |
991 if (count() >= HotCallCountThreshold) return true; | |
992 if (profit() >= HotCallProfitThreshold) return true; | |
993 if (work() <= HotCallTrivialWork) return true; | |
994 if (size() <= HotCallTrivialSize) return true; | |
995 return false; | |
996 } | |
997 | |
998 // compute_heat: | |
999 float WarmCallInfo::compute_heat() const { | |
1000 assert(!is_cold(), "compute heat only on warm nodes"); | |
1001 assert(!is_hot(), "compute heat only on warm nodes"); | |
1002 int min_size = MAX2(0, (int)HotCallTrivialSize); | |
1003 int max_size = MIN2(500, (int)WarmCallMaxSize); | |
1004 float method_size = (size() - min_size) / MAX2(1, max_size - min_size); | |
1005 float size_factor; | |
1006 if (method_size < 0.05) size_factor = 4; // 2 sigmas better than avg. | |
1007 else if (method_size < 0.15) size_factor = 2; // 1 sigma better than avg. | |
1008 else if (method_size < 0.5) size_factor = 1; // better than avg. | |
1009 else size_factor = 0.5; // worse than avg. | |
1010 return (count() * profit() * size_factor); | |
1011 } | |
1012 | |
1013 bool WarmCallInfo::warmer_than(WarmCallInfo* that) { | |
1014 assert(this != that, "compare only different WCIs"); | |
1015 assert(this->heat() != 0 && that->heat() != 0, "call compute_heat 1st"); | |
1016 if (this->heat() > that->heat()) return true; | |
1017 if (this->heat() < that->heat()) return false; | |
1018 assert(this->heat() == that->heat(), "no NaN heat allowed"); | |
1019 // Equal heat. Break the tie some other way. | |
1020 if (!this->call() || !that->call()) return (address)this > (address)that; | |
1021 return this->call()->_idx > that->call()->_idx; | |
1022 } | |
1023 | |
1024 //#define UNINIT_NEXT ((WarmCallInfo*)badAddress) | |
1025 #define UNINIT_NEXT ((WarmCallInfo*)NULL) | |
1026 | |
1027 WarmCallInfo* WarmCallInfo::insert_into(WarmCallInfo* head) { | |
1028 assert(next() == UNINIT_NEXT, "not yet on any list"); | |
1029 WarmCallInfo* prev_p = NULL; | |
1030 WarmCallInfo* next_p = head; | |
1031 while (next_p != NULL && next_p->warmer_than(this)) { | |
1032 prev_p = next_p; | |
1033 next_p = prev_p->next(); | |
1034 } | |
1035 // Install this between prev_p and next_p. | |
1036 this->set_next(next_p); | |
1037 if (prev_p == NULL) | |
1038 head = this; | |
1039 else | |
1040 prev_p->set_next(this); | |
1041 return head; | |
1042 } | |
1043 | |
1044 WarmCallInfo* WarmCallInfo::remove_from(WarmCallInfo* head) { | |
1045 WarmCallInfo* prev_p = NULL; | |
1046 WarmCallInfo* next_p = head; | |
1047 while (next_p != this) { | |
1048 assert(next_p != NULL, "this must be in the list somewhere"); | |
1049 prev_p = next_p; | |
1050 next_p = prev_p->next(); | |
1051 } | |
1052 next_p = this->next(); | |
1053 debug_only(this->set_next(UNINIT_NEXT)); | |
1054 // Remove this from between prev_p and next_p. | |
1055 if (prev_p == NULL) | |
1056 head = next_p; | |
1057 else | |
1058 prev_p->set_next(next_p); | |
1059 return head; | |
1060 } | |
1061 | |
2443
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1062 WarmCallInfo WarmCallInfo::_always_hot(WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE(), |
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1063 WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE()); |
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1064 WarmCallInfo WarmCallInfo::_always_cold(WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE(), |
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1065 WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE()); |
0 | 1066 |
1067 WarmCallInfo* WarmCallInfo::always_hot() { | |
2443
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1068 assert(_always_hot.is_hot(), "must always be hot"); |
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1069 return &_always_hot; |
0 | 1070 } |
1071 | |
1072 WarmCallInfo* WarmCallInfo::always_cold() { | |
2443
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1073 assert(_always_cold.is_cold(), "must always be cold"); |
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
2357
diff
changeset
|
1074 return &_always_cold; |
0 | 1075 } |
1076 | |
1077 | |
1078 #ifndef PRODUCT | |
1079 | |
1080 void WarmCallInfo::print() const { | |
1081 tty->print("%s : C=%6.1f P=%6.1f W=%6.1f S=%6.1f H=%6.1f -> %p", | |
1082 is_cold() ? "cold" : is_hot() ? "hot " : "warm", | |
1083 count(), profit(), work(), size(), compute_heat(), next()); | |
1084 tty->cr(); | |
1085 if (call() != NULL) call()->dump(); | |
1086 } | |
1087 | |
1088 void print_wci(WarmCallInfo* ci) { | |
1089 ci->print(); | |
1090 } | |
1091 | |
1092 void WarmCallInfo::print_all() const { | |
1093 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
1094 p->print(); | |
1095 } | |
1096 | |
1097 int WarmCallInfo::count_all() const { | |
1098 int cnt = 0; | |
1099 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
1100 cnt++; | |
1101 return cnt; | |
1102 } | |
1103 | |
1104 #endif //PRODUCT |