Mercurial > hg > truffle
annotate src/share/vm/opto/callGenerator.hpp @ 12966:b2ee5dc63353
8024070: C2 needs some form of type speculation
Summary: record unused type profile information with type system, propagate and use it.
Reviewed-by: kvn, twisti
| author | roland |
|---|---|
| date | Wed, 23 Oct 2013 12:40:23 +0200 |
| parents | 3213ba4d3dff |
| children | 096c224171c4 922c87c9aed4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
12146
9758d9f36299
8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
coleenp
parents:
10278
diff
changeset
|
2 * Copyright (c) 2000, 2013, 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:
1138
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
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:
1138
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_OPTO_CALLGENERATOR_HPP |
| 26 #define SHARE_VM_OPTO_CALLGENERATOR_HPP | |
| 27 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
28 #include "compiler/compileBroker.hpp" |
| 1972 | 29 #include "opto/callnode.hpp" |
| 30 #include "opto/compile.hpp" | |
| 31 #include "opto/type.hpp" | |
| 32 #include "runtime/deoptimization.hpp" | |
| 33 | |
|
12956
3213ba4d3dff
8024069: replace_in_map() should operate on parent maps
roland
parents:
12330
diff
changeset
|
34 class Parse; |
|
3213ba4d3dff
8024069: replace_in_map() should operate on parent maps
roland
parents:
12330
diff
changeset
|
35 |
| 0 | 36 //---------------------------CallGenerator------------------------------------- |
| 37 // The subclasses of this class handle generation of ideal nodes for | |
| 38 // call sites and method entry points. | |
| 39 | |
| 40 class CallGenerator : public ResourceObj { | |
| 41 public: | |
| 42 enum { | |
| 43 xxxunusedxxx | |
| 44 }; | |
| 45 | |
| 46 private: | |
| 47 ciMethod* _method; // The method being called. | |
| 48 | |
| 49 protected: | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
50 CallGenerator(ciMethod* method) : _method(method) {} |
| 0 | 51 |
| 52 public: | |
| 53 // Accessors | |
| 54 ciMethod* method() const { return _method; } | |
| 55 | |
| 56 // is_inline: At least some code implementing the method is copied here. | |
| 57 virtual bool is_inline() const { return false; } | |
| 58 // is_intrinsic: There's a method-specific way of generating the inline code. | |
| 59 virtual bool is_intrinsic() const { return false; } | |
| 60 // is_parse: Bytecodes implementing the specific method are copied here. | |
| 61 virtual bool is_parse() const { return false; } | |
| 62 // is_virtual: The call uses the receiver type to select or check the method. | |
| 63 virtual bool is_virtual() const { return false; } | |
| 64 // is_deferred: The decision whether to inline or not is deferred. | |
| 65 virtual bool is_deferred() const { return false; } | |
| 66 // is_predicted: Uses an explicit check against a predicted type. | |
| 67 virtual bool is_predicted() const { return false; } | |
| 68 // is_trap: Does not return to the caller. (E.g., uncommon trap.) | |
| 69 virtual bool is_trap() const { return false; } | |
|
12330
29bdcf12457c
8014447: Object.hashCode intrinsic breaks inline caches
shade
parents:
12295
diff
changeset
|
70 // does_virtual_dispatch: Should try inlining as normal method first. |
|
29bdcf12457c
8014447: Object.hashCode intrinsic breaks inline caches
shade
parents:
12295
diff
changeset
|
71 virtual bool does_virtual_dispatch() const { return false; } |
| 0 | 72 |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
73 // is_late_inline: supports conversion of call into an inline |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
74 virtual bool is_late_inline() const { return false; } |
| 7473 | 75 // same but for method handle calls |
| 76 virtual bool is_mh_late_inline() const { return false; } | |
| 12966 | 77 virtual bool is_string_late_inline() const{ return false; } |
| 7473 | 78 |
| 79 // for method handle calls: have we tried inlinining the call already? | |
| 80 virtual bool already_attempted() const { ShouldNotReachHere(); return false; } | |
| 81 | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
82 // Replace the call with an inline version of the code |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
83 virtual void do_late_inline() { ShouldNotReachHere(); } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
84 |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
85 virtual CallStaticJavaNode* call_node() const { ShouldNotReachHere(); return NULL; } |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
86 |
| 0 | 87 // Note: It is possible for a CG to be both inline and virtual. |
| 88 // (The hashCode intrinsic does a vtable check and an inlined fast path.) | |
| 89 | |
| 90 // Utilities: | |
| 91 const TypeFunc* tf() const; | |
| 92 | |
| 93 // The given jvms has state and arguments for a call to my method. | |
| 94 // Edges after jvms->argoff() carry all (pre-popped) argument values. | |
| 95 // | |
| 96 // Update the map with state and return values (if any) and return it. | |
| 97 // The return values (0, 1, or 2) must be pushed on the map's stack, | |
| 98 // and the sp of the jvms incremented accordingly. | |
| 99 // | |
| 100 // The jvms is returned on success. Alternatively, a copy of the | |
| 101 // given jvms, suitably updated, may be returned, in which case the | |
| 102 // caller should discard the original jvms. | |
| 103 // | |
| 104 // The non-Parm edges of the returned map will contain updated global state, | |
| 105 // and one or two edges before jvms->sp() will carry any return values. | |
| 106 // Other map edges may contain locals or monitors, and should not | |
| 107 // be changed in meaning. | |
| 108 // | |
| 109 // If the call traps, the returned map must have a control edge of top. | |
| 110 // If the call can throw, the returned map must report has_exceptions(). | |
| 111 // | |
| 112 // If the result is NULL, it means that this CallGenerator was unable | |
| 113 // to handle the given call, and another CallGenerator should be consulted. | |
|
12956
3213ba4d3dff
8024069: replace_in_map() should operate on parent maps
roland
parents:
12330
diff
changeset
|
114 virtual JVMState* generate(JVMState* jvms, Parse* parent_parser) = 0; |
| 0 | 115 |
| 116 // How to generate a call site that is inlined: | |
| 117 static CallGenerator* for_inline(ciMethod* m, float expected_uses = -1); | |
| 118 // How to generate code for an on-stack replacement handler. | |
| 119 static CallGenerator* for_osr(ciMethod* m, int osr_bci); | |
| 120 | |
| 121 // How to generate vanilla out-of-line call sites: | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
122 static CallGenerator* for_direct_call(ciMethod* m, bool separate_io_projs = false); // static, special |
|
4117
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
parents:
3852
diff
changeset
|
123 static CallGenerator* for_virtual_call(ciMethod* m, int vtable_index); // virtual, interface |
|
1137
97125851f396
6829187: compiler optimizations required for JSR 292
twisti
parents:
1080
diff
changeset
|
124 static CallGenerator* for_dynamic_call(ciMethod* m); // invokedynamic |
|
4117
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
parents:
3852
diff
changeset
|
125 |
| 7473 | 126 static CallGenerator* for_method_handle_call( JVMState* jvms, ciMethod* caller, ciMethod* callee, bool delayed_forbidden); |
| 127 static CallGenerator* for_method_handle_inline(JVMState* jvms, ciMethod* caller, ciMethod* callee, bool& input_not_const); | |
|
3752
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
128 |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
129 // How to generate a replace a direct call with an inline version |
|
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
130 static CallGenerator* for_late_inline(ciMethod* m, CallGenerator* inline_cg); |
| 7473 | 131 static CallGenerator* for_mh_late_inline(ciMethod* caller, ciMethod* callee, bool input_not_const); |
| 132 static CallGenerator* for_string_late_inline(ciMethod* m, CallGenerator* inline_cg); | |
| 10278 | 133 static CallGenerator* for_boxing_late_inline(ciMethod* m, CallGenerator* inline_cg); |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
0
diff
changeset
|
134 |
| 0 | 135 // How to make a call but defer the decision whether to inline or not. |
| 136 static CallGenerator* for_warm_call(WarmCallInfo* ci, | |
| 137 CallGenerator* if_cold, | |
| 138 CallGenerator* if_hot); | |
| 139 | |
| 140 // How to make a call that optimistically assumes a receiver type: | |
| 141 static CallGenerator* for_predicted_call(ciKlass* predicted_receiver, | |
| 142 CallGenerator* if_missed, | |
| 143 CallGenerator* if_hit, | |
| 144 float hit_prob); | |
| 145 | |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
146 // How to make a call that optimistically assumes a MethodHandle target: |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
147 static CallGenerator* for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle, |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
148 CallGenerator* if_missed, |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
149 CallGenerator* if_hit, |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
150 float hit_prob); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
151 |
| 0 | 152 // How to make a call that gives up and goes back to the interpreter: |
| 153 static CallGenerator* for_uncommon_trap(ciMethod* m, | |
| 154 Deoptimization::DeoptReason reason, | |
| 155 Deoptimization::DeoptAction action); | |
| 156 | |
| 157 // Registry for intrinsics: | |
| 158 static CallGenerator* for_intrinsic(ciMethod* m); | |
| 159 static void register_intrinsic(ciMethod* m, CallGenerator* cg); | |
| 6894 | 160 static CallGenerator* for_predicted_intrinsic(CallGenerator* intrinsic, |
| 161 CallGenerator* cg); | |
| 162 virtual Node* generate_predicate(JVMState* jvms) { return NULL; }; | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
163 |
| 7473 | 164 virtual void print_inlining_late(const char* msg) { ShouldNotReachHere(); } |
| 165 | |
|
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
6894
diff
changeset
|
166 static void print_inlining(Compile* C, ciMethod* callee, int inline_level, int bci, const char* msg) { |
| 12295 | 167 if (C->print_inlining()) { |
|
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
6894
diff
changeset
|
168 C->print_inlining(callee, inline_level, bci, msg); |
| 12295 | 169 } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
170 } |
| 0 | 171 }; |
| 172 | |
| 173 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
174 //------------------------InlineCallGenerator---------------------------------- |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
175 class InlineCallGenerator : public CallGenerator { |
| 0 | 176 protected: |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
177 InlineCallGenerator(ciMethod* method) : CallGenerator(method) {} |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
178 |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
179 public: |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
4117
diff
changeset
|
180 virtual bool is_inline() const { return true; } |
| 0 | 181 }; |
| 182 | |
| 183 | |
| 184 //---------------------------WarmCallInfo-------------------------------------- | |
| 185 // A struct to collect information about a given call site. | |
| 186 // Helps sort call sites into "hot", "medium", and "cold". | |
| 187 // Participates in the queueing of "medium" call sites for possible inlining. | |
| 188 class WarmCallInfo : public ResourceObj { | |
| 189 private: | |
| 190 | |
| 191 CallNode* _call; // The CallNode which may be inlined. | |
| 192 CallGenerator* _hot_cg;// CG for expanding the call node | |
| 193 | |
| 194 // These are the metrics we use to evaluate call sites: | |
| 195 | |
| 196 float _count; // How often do we expect to reach this site? | |
| 197 float _profit; // How much time do we expect to save by inlining? | |
| 198 float _work; // How long do we expect the average call to take? | |
| 199 float _size; // How big do we expect the inlined code to be? | |
| 200 | |
| 201 float _heat; // Combined score inducing total order on call sites. | |
| 202 WarmCallInfo* _next; // Next cooler call info in pending queue. | |
| 203 | |
| 204 // Count is the number of times this call site is expected to be executed. | |
| 205 // Large count is favorable for inlining, because the extra compilation | |
| 206 // work will be amortized more completely. | |
| 207 | |
| 208 // Profit is a rough measure of the amount of time we expect to save | |
| 209 // per execution of this site if we inline it. (1.0 == call overhead) | |
| 210 // Large profit favors inlining. Negative profit disables inlining. | |
| 211 | |
| 212 // Work is a rough measure of the amount of time a typical out-of-line | |
| 213 // call from this site is expected to take. (1.0 == call, no-op, return) | |
| 214 // Small work is somewhat favorable for inlining, since methods with | |
| 215 // short "hot" traces are more likely to inline smoothly. | |
| 216 | |
| 217 // Size is the number of graph nodes we expect this method to produce, | |
| 218 // not counting the inlining of any further warm calls it may include. | |
| 219 // Small size favors inlining, since small methods are more likely to | |
| 220 // inline smoothly. The size is estimated by examining the native code | |
| 221 // if available. The method bytecodes are also examined, assuming | |
| 222 // empirically observed node counts for each kind of bytecode. | |
| 223 | |
| 224 // Heat is the combined "goodness" of a site's inlining. If we were | |
| 225 // omniscient, it would be the difference of two sums of future execution | |
| 226 // times of code emitted for this site (amortized across multiple sites if | |
| 227 // sharing applies). The two sums are for versions of this call site with | |
| 228 // and without inlining. | |
| 229 | |
| 230 // We approximate this mythical quantity by playing with averages, | |
| 231 // rough estimates, and assumptions that history repeats itself. | |
| 232 // The basic formula count * profit is heuristically adjusted | |
| 233 // by looking at the expected compilation and execution times of | |
| 234 // of the inlined call. | |
| 235 | |
| 236 // Note: Some of these metrics may not be present in the final product, | |
| 237 // but exist in development builds to experiment with inline policy tuning. | |
| 238 | |
| 239 // This heuristic framework does not model well the very significant | |
| 240 // effects of multiple-level inlining. It is possible to see no immediate | |
| 241 // profit from inlining X->Y, but to get great profit from a subsequent | |
| 242 // inlining X->Y->Z. | |
| 243 | |
| 244 // This framework does not take well into account the problem of N**2 code | |
| 245 // size in a clique of mutually inlinable methods. | |
| 246 | |
| 247 WarmCallInfo* next() const { return _next; } | |
| 248 void set_next(WarmCallInfo* n) { _next = n; } | |
| 249 | |
|
2443
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
250 static WarmCallInfo _always_hot; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
251 static WarmCallInfo _always_cold; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
252 |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
253 // Constructor intitialization of always_hot and always_cold |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
254 WarmCallInfo(float c, float p, float w, float s) { |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
255 _call = NULL; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
256 _hot_cg = NULL; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
257 _next = NULL; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
258 _count = c; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
259 _profit = p; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
260 _work = w; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
261 _size = s; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
262 _heat = 0; |
|
f8b038506985
6909440: C2 fails with assertion (_always_cold->is_cold(),"must always be cold")
never
parents:
1972
diff
changeset
|
263 } |
| 0 | 264 |
| 265 public: | |
| 266 // Because WarmInfo objects live over the entire lifetime of the | |
| 267 // Compile object, they are allocated into the comp_arena, which | |
| 268 // does not get resource marked or reset during the compile process | |
|
12146
9758d9f36299
8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
coleenp
parents:
10278
diff
changeset
|
269 void *operator new( size_t x, Compile* C ) throw() { return C->comp_arena()->Amalloc(x); } |
| 0 | 270 void operator delete( void * ) { } // fast deallocation |
| 271 | |
| 272 static WarmCallInfo* always_hot(); | |
| 273 static WarmCallInfo* always_cold(); | |
| 274 | |
| 275 WarmCallInfo() { | |
| 276 _call = NULL; | |
| 277 _hot_cg = NULL; | |
| 278 _next = NULL; | |
| 279 _count = _profit = _work = _size = _heat = 0; | |
| 280 } | |
| 281 | |
| 282 CallNode* call() const { return _call; } | |
| 283 float count() const { return _count; } | |
| 284 float size() const { return _size; } | |
| 285 float work() const { return _work; } | |
| 286 float profit() const { return _profit; } | |
| 287 float heat() const { return _heat; } | |
| 288 | |
| 289 void set_count(float x) { _count = x; } | |
| 290 void set_size(float x) { _size = x; } | |
| 291 void set_work(float x) { _work = x; } | |
| 292 void set_profit(float x) { _profit = x; } | |
| 293 void set_heat(float x) { _heat = x; } | |
| 294 | |
| 295 // Load initial heuristics from profiles, etc. | |
| 296 // The heuristics can be tweaked further by the caller. | |
| 297 void init(JVMState* call_site, ciMethod* call_method, ciCallProfile& profile, float prof_factor); | |
| 298 | |
| 299 static float MAX_VALUE() { return +1.0e10; } | |
| 300 static float MIN_VALUE() { return -1.0e10; } | |
| 301 | |
| 302 float compute_heat() const; | |
| 303 | |
| 304 void set_call(CallNode* call) { _call = call; } | |
| 305 void set_hot_cg(CallGenerator* cg) { _hot_cg = cg; } | |
| 306 | |
| 307 // Do not queue very hot or very cold calls. | |
| 308 // Make very cold ones out of line immediately. | |
| 309 // Inline very hot ones immediately. | |
| 310 // These queries apply various tunable limits | |
| 311 // to the above metrics in a systematic way. | |
| 312 // Test for coldness before testing for hotness. | |
| 313 bool is_cold() const; | |
| 314 bool is_hot() const; | |
| 315 | |
| 316 // Force a warm call to be hot. This worklists the call node for inlining. | |
| 317 void make_hot(); | |
| 318 | |
| 319 // Force a warm call to be cold. This worklists the call node for out-of-lining. | |
| 320 void make_cold(); | |
| 321 | |
| 322 // A reproducible total ordering, in which heat is the major key. | |
| 323 bool warmer_than(WarmCallInfo* that); | |
| 324 | |
| 325 // List management. These methods are called with the list head, | |
| 326 // and return the new list head, inserting or removing the receiver. | |
| 327 WarmCallInfo* insert_into(WarmCallInfo* head); | |
| 328 WarmCallInfo* remove_from(WarmCallInfo* head); | |
| 329 | |
| 330 #ifndef PRODUCT | |
| 331 void print() const; | |
| 332 void print_all() const; | |
| 333 int count_all() const; | |
| 334 #endif | |
| 335 }; | |
| 1972 | 336 |
| 337 #endif // SHARE_VM_OPTO_CALLGENERATOR_HPP |