Mercurial > hg > truffle
annotate src/share/vm/opto/callGenerator.cpp @ 3901:aa67216400d3
7085404: JSR 292: VolatileCallSites should have push notification too
Reviewed-by: never, kvn
author | twisti |
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date | Fri, 02 Sep 2011 00:36:18 -0700 |
parents | a32de5085326 |
children | c26de9aef2ed |
rev | line source |
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0 | 1 /* |
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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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/bcEscapeAnalyzer.hpp" | |
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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; | |
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64 assert(InlineTree::check_can_parse(method) == NULL, "parse must be possible"); |
0 | 65 } |
66 | |
67 virtual bool is_parse() const { return true; } | |
68 virtual JVMState* generate(JVMState* jvms); | |
69 int is_osr() { return _is_osr; } | |
70 | |
71 }; | |
72 | |
73 JVMState* ParseGenerator::generate(JVMState* jvms) { | |
74 Compile* C = Compile::current(); | |
75 | |
76 if (is_osr()) { | |
77 // The JVMS for a OSR has a single argument (see its TypeFunc). | |
78 assert(jvms->depth() == 1, "no inline OSR"); | |
79 } | |
80 | |
81 if (C->failing()) { | |
82 return NULL; // bailing out of the compile; do not try to parse | |
83 } | |
84 | |
85 Parse parser(jvms, method(), _expected_uses); | |
86 // Grab signature for matching/allocation | |
87 #ifdef ASSERT | |
88 if (parser.tf() != (parser.depth() == 1 ? C->tf() : tf())) { | |
89 MutexLockerEx ml(Compile_lock, Mutex::_no_safepoint_check_flag); | |
90 assert(C->env()->system_dictionary_modification_counter_changed(), | |
91 "Must invalidate if TypeFuncs differ"); | |
92 } | |
93 #endif | |
94 | |
95 GraphKit& exits = parser.exits(); | |
96 | |
97 if (C->failing()) { | |
98 while (exits.pop_exception_state() != NULL) ; | |
99 return NULL; | |
100 } | |
101 | |
102 assert(exits.jvms()->same_calls_as(jvms), "sanity"); | |
103 | |
104 // Simply return the exit state of the parser, | |
105 // augmented by any exceptional states. | |
106 return exits.transfer_exceptions_into_jvms(); | |
107 } | |
108 | |
109 //---------------------------DirectCallGenerator------------------------------ | |
110 // Internal class which handles all out-of-line calls w/o receiver type checks. | |
111 class DirectCallGenerator : public CallGenerator { | |
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112 private: |
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113 CallStaticJavaNode* _call_node; |
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114 // Force separate memory and I/O projections for the exceptional |
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115 // paths to facilitate late inlinig. |
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116 bool _separate_io_proj; |
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117 |
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118 public: |
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119 DirectCallGenerator(ciMethod* method, bool separate_io_proj) |
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120 : CallGenerator(method), |
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121 _separate_io_proj(separate_io_proj) |
0 | 122 { |
123 } | |
124 virtual JVMState* generate(JVMState* jvms); | |
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125 |
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126 CallStaticJavaNode* call_node() const { return _call_node; } |
0 | 127 }; |
128 | |
129 JVMState* DirectCallGenerator::generate(JVMState* jvms) { | |
130 GraphKit kit(jvms); | |
131 bool is_static = method()->is_static(); | |
132 address target = is_static ? SharedRuntime::get_resolve_static_call_stub() | |
133 : SharedRuntime::get_resolve_opt_virtual_call_stub(); | |
134 | |
135 if (kit.C->log() != NULL) { | |
136 kit.C->log()->elem("direct_call bci='%d'", jvms->bci()); | |
137 } | |
138 | |
139 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), target, method(), kit.bci()); | |
140 if (!is_static) { | |
141 // Make an explicit receiver null_check as part of this call. | |
142 // Since we share a map with the caller, his JVMS gets adjusted. | |
143 kit.null_check_receiver(method()); | |
144 if (kit.stopped()) { | |
145 // And dump it back to the caller, decorated with any exceptions: | |
146 return kit.transfer_exceptions_into_jvms(); | |
147 } | |
148 // Mark the call node as virtual, sort of: | |
149 call->set_optimized_virtual(true); | |
1265 | 150 if (method()->is_method_handle_invoke()) { |
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151 call->set_method_handle_invoke(true); |
1265 | 152 kit.C->set_has_method_handle_invokes(true); |
153 } | |
0 | 154 } |
155 kit.set_arguments_for_java_call(call); | |
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156 kit.set_edges_for_java_call(call, false, _separate_io_proj); |
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157 Node* ret = kit.set_results_for_java_call(call, _separate_io_proj); |
0 | 158 kit.push_node(method()->return_type()->basic_type(), ret); |
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159 _call_node = call; // Save the call node in case we need it later |
0 | 160 return kit.transfer_exceptions_into_jvms(); |
161 } | |
162 | |
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163 //---------------------------DynamicCallGenerator----------------------------- |
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164 // Internal class which handles all out-of-line invokedynamic calls. |
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165 class DynamicCallGenerator : public CallGenerator { |
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166 public: |
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167 DynamicCallGenerator(ciMethod* method) |
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168 : CallGenerator(method) |
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169 { |
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170 } |
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171 virtual JVMState* generate(JVMState* jvms); |
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172 }; |
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173 |
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174 JVMState* DynamicCallGenerator::generate(JVMState* jvms) { |
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175 GraphKit kit(jvms); |
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176 |
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177 if (kit.C->log() != NULL) { |
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178 kit.C->log()->elem("dynamic_call bci='%d'", jvms->bci()); |
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179 } |
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180 |
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181 // Get the constant pool cache from the caller class. |
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182 ciMethod* caller_method = jvms->method(); |
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183 ciBytecodeStream str(caller_method); |
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184 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
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185 assert(str.cur_bc() == Bytecodes::_invokedynamic, "wrong place to issue a dynamic call!"); |
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186 ciCPCache* cpcache = str.get_cpcache(); |
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187 |
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188 // Get the offset of the CallSite from the constant pool cache |
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189 // pointer. |
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190 int index = str.get_method_index(); |
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191 size_t call_site_offset = cpcache->get_f1_offset(index); |
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192 |
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193 // Load the CallSite object from the constant pool cache. |
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194 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
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195 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
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196 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
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197 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
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198 |
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199 // Load the target MethodHandle from the CallSite object. |
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200 Node* target_mh_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
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201 Node* target_mh = kit.make_load(kit.control(), target_mh_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
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202 |
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203 address resolve_stub = SharedRuntime::get_resolve_opt_virtual_call_stub(); |
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204 |
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205 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), resolve_stub, method(), kit.bci()); |
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206 // invokedynamic is treated as an optimized invokevirtual. |
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207 call->set_optimized_virtual(true); |
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208 // Take extra care (in the presence of argument motion) not to trash the SP: |
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209 call->set_method_handle_invoke(true); |
1265 | 210 kit.C->set_has_method_handle_invokes(true); |
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211 |
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212 // Pass the target MethodHandle as first argument and shift the |
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213 // other arguments. |
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214 call->init_req(0 + TypeFunc::Parms, target_mh); |
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215 uint nargs = call->method()->arg_size(); |
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216 for (uint i = 1; i < nargs; i++) { |
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217 Node* arg = kit.argument(i - 1); |
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218 call->init_req(i + TypeFunc::Parms, arg); |
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219 } |
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220 |
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221 kit.set_edges_for_java_call(call); |
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222 Node* ret = kit.set_results_for_java_call(call); |
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223 kit.push_node(method()->return_type()->basic_type(), ret); |
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224 return kit.transfer_exceptions_into_jvms(); |
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225 } |
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226 |
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227 //--------------------------VirtualCallGenerator------------------------------ |
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228 // Internal class which handles all out-of-line calls checking receiver type. |
0 | 229 class VirtualCallGenerator : public CallGenerator { |
230 private: | |
231 int _vtable_index; | |
232 public: | |
233 VirtualCallGenerator(ciMethod* method, int vtable_index) | |
234 : CallGenerator(method), _vtable_index(vtable_index) | |
235 { | |
236 assert(vtable_index == methodOopDesc::invalid_vtable_index || | |
237 vtable_index >= 0, "either invalid or usable"); | |
238 } | |
239 virtual bool is_virtual() const { return true; } | |
240 virtual JVMState* generate(JVMState* jvms); | |
241 }; | |
242 | |
243 JVMState* VirtualCallGenerator::generate(JVMState* jvms) { | |
244 GraphKit kit(jvms); | |
245 Node* receiver = kit.argument(0); | |
246 | |
247 if (kit.C->log() != NULL) { | |
248 kit.C->log()->elem("virtual_call bci='%d'", jvms->bci()); | |
249 } | |
250 | |
251 // If the receiver is a constant null, do not torture the system | |
252 // by attempting to call through it. The compile will proceed | |
253 // correctly, but may bail out in final_graph_reshaping, because | |
254 // the call instruction will have a seemingly deficient out-count. | |
255 // (The bailout says something misleading about an "infinite loop".) | |
256 if (kit.gvn().type(receiver)->higher_equal(TypePtr::NULL_PTR)) { | |
257 kit.inc_sp(method()->arg_size()); // restore arguments | |
258 kit.uncommon_trap(Deoptimization::Reason_null_check, | |
259 Deoptimization::Action_none, | |
260 NULL, "null receiver"); | |
261 return kit.transfer_exceptions_into_jvms(); | |
262 } | |
263 | |
264 // Ideally we would unconditionally do a null check here and let it | |
265 // be converted to an implicit check based on profile information. | |
266 // However currently the conversion to implicit null checks in | |
267 // Block::implicit_null_check() only looks for loads and stores, not calls. | |
268 ciMethod *caller = kit.method(); | |
269 ciMethodData *caller_md = (caller == NULL) ? NULL : caller->method_data(); | |
270 if (!UseInlineCaches || !ImplicitNullChecks || | |
271 ((ImplicitNullCheckThreshold > 0) && caller_md && | |
272 (caller_md->trap_count(Deoptimization::Reason_null_check) | |
273 >= (uint)ImplicitNullCheckThreshold))) { | |
274 // Make an explicit receiver null_check as part of this call. | |
275 // Since we share a map with the caller, his JVMS gets adjusted. | |
276 receiver = kit.null_check_receiver(method()); | |
277 if (kit.stopped()) { | |
278 // And dump it back to the caller, decorated with any exceptions: | |
279 return kit.transfer_exceptions_into_jvms(); | |
280 } | |
281 } | |
282 | |
283 assert(!method()->is_static(), "virtual call must not be to static"); | |
284 assert(!method()->is_final(), "virtual call should not be to final"); | |
285 assert(!method()->is_private(), "virtual call should not be to private"); | |
286 assert(_vtable_index == methodOopDesc::invalid_vtable_index || !UseInlineCaches, | |
287 "no vtable calls if +UseInlineCaches "); | |
288 address target = SharedRuntime::get_resolve_virtual_call_stub(); | |
289 // Normal inline cache used for call | |
290 CallDynamicJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallDynamicJavaNode(tf(), target, method(), _vtable_index, kit.bci()); | |
291 kit.set_arguments_for_java_call(call); | |
292 kit.set_edges_for_java_call(call); | |
293 Node* ret = kit.set_results_for_java_call(call); | |
294 kit.push_node(method()->return_type()->basic_type(), ret); | |
295 | |
296 // Represent the effect of an implicit receiver null_check | |
297 // as part of this call. Since we share a map with the caller, | |
298 // his JVMS gets adjusted. | |
299 kit.cast_not_null(receiver); | |
300 return kit.transfer_exceptions_into_jvms(); | |
301 } | |
302 | |
303 CallGenerator* CallGenerator::for_inline(ciMethod* m, float expected_uses) { | |
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304 if (InlineTree::check_can_parse(m) != NULL) return NULL; |
0 | 305 return new ParseGenerator(m, expected_uses); |
306 } | |
307 | |
308 // As a special case, the JVMS passed to this CallGenerator is | |
309 // for the method execution already in progress, not just the JVMS | |
310 // of the caller. Thus, this CallGenerator cannot be mixed with others! | |
311 CallGenerator* CallGenerator::for_osr(ciMethod* m, int osr_bci) { | |
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312 if (InlineTree::check_can_parse(m) != NULL) return NULL; |
0 | 313 float past_uses = m->interpreter_invocation_count(); |
314 float expected_uses = past_uses; | |
315 return new ParseGenerator(m, expected_uses, true); | |
316 } | |
317 | |
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318 CallGenerator* CallGenerator::for_direct_call(ciMethod* m, bool separate_io_proj) { |
0 | 319 assert(!m->is_abstract(), "for_direct_call mismatch"); |
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320 return new DirectCallGenerator(m, separate_io_proj); |
0 | 321 } |
322 | |
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323 CallGenerator* CallGenerator::for_dynamic_call(ciMethod* m) { |
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324 assert(m->is_method_handle_invoke() || m->is_method_handle_adapter(), "for_dynamic_call mismatch"); |
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325 return new DynamicCallGenerator(m); |
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326 } |
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327 |
0 | 328 CallGenerator* CallGenerator::for_virtual_call(ciMethod* m, int vtable_index) { |
329 assert(!m->is_static(), "for_virtual_call mismatch"); | |
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330 assert(!m->is_method_handle_invoke(), "should be a direct call"); |
0 | 331 return new VirtualCallGenerator(m, vtable_index); |
332 } | |
333 | |
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334 // Allow inlining decisions to be delayed |
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335 class LateInlineCallGenerator : public DirectCallGenerator { |
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336 CallGenerator* _inline_cg; |
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337 |
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338 public: |
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339 LateInlineCallGenerator(ciMethod* method, CallGenerator* inline_cg) : |
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340 DirectCallGenerator(method, true), _inline_cg(inline_cg) {} |
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341 |
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342 virtual bool is_late_inline() const { return true; } |
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343 |
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344 // Convert the CallStaticJava into an inline |
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345 virtual void do_late_inline(); |
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346 |
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347 JVMState* generate(JVMState* jvms) { |
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348 // Record that this call site should be revisited once the main |
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349 // parse is finished. |
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350 Compile::current()->add_late_inline(this); |
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351 |
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352 // Emit the CallStaticJava and request separate projections so |
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353 // that the late inlining logic can distinguish between fall |
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354 // through and exceptional uses of the memory and io projections |
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355 // as is done for allocations and macro expansion. |
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356 return DirectCallGenerator::generate(jvms); |
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357 } |
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358 |
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359 }; |
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360 |
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361 |
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362 void LateInlineCallGenerator::do_late_inline() { |
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363 // Can't inline it |
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364 if (call_node() == NULL || call_node()->outcnt() == 0 || |
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365 call_node()->in(0) == NULL || call_node()->in(0)->is_top()) |
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366 return; |
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367 |
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368 CallStaticJavaNode* call = call_node(); |
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369 |
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370 // Make a clone of the JVMState that appropriate to use for driving a parse |
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371 Compile* C = Compile::current(); |
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372 JVMState* jvms = call->jvms()->clone_shallow(C); |
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373 uint size = call->req(); |
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374 SafePointNode* map = new (C, size) SafePointNode(size, jvms); |
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375 for (uint i1 = 0; i1 < size; i1++) { |
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376 map->init_req(i1, call->in(i1)); |
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377 } |
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378 |
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379 // Make sure the state is a MergeMem for parsing. |
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380 if (!map->in(TypeFunc::Memory)->is_MergeMem()) { |
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381 map->set_req(TypeFunc::Memory, MergeMemNode::make(C, map->in(TypeFunc::Memory))); |
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382 } |
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383 |
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384 // Make enough space for the expression stack and transfer the incoming arguments |
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385 int nargs = method()->arg_size(); |
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386 jvms->set_map(map); |
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387 map->ensure_stack(jvms, jvms->method()->max_stack()); |
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388 if (nargs > 0) { |
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389 for (int i1 = 0; i1 < nargs; i1++) { |
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390 map->set_req(i1 + jvms->argoff(), call->in(TypeFunc::Parms + i1)); |
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391 } |
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392 } |
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393 |
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394 CompileLog* log = C->log(); |
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395 if (log != NULL) { |
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396 log->head("late_inline method='%d'", log->identify(method())); |
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397 JVMState* p = jvms; |
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398 while (p != NULL) { |
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399 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method())); |
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400 p = p->caller(); |
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401 } |
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402 log->tail("late_inline"); |
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403 } |
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404 |
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405 // Setup default node notes to be picked up by the inlining |
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406 Node_Notes* old_nn = C->default_node_notes(); |
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407 if (old_nn != NULL) { |
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408 Node_Notes* entry_nn = old_nn->clone(C); |
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409 entry_nn->set_jvms(jvms); |
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410 C->set_default_node_notes(entry_nn); |
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411 } |
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412 |
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413 // Now perform the inling using the synthesized JVMState |
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414 JVMState* new_jvms = _inline_cg->generate(jvms); |
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415 if (new_jvms == NULL) return; // no change |
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416 if (C->failing()) return; |
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417 |
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418 // Capture any exceptional control flow |
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419 GraphKit kit(new_jvms); |
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420 |
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421 // Find the result object |
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422 Node* result = C->top(); |
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423 int result_size = method()->return_type()->size(); |
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424 if (result_size != 0 && !kit.stopped()) { |
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425 result = (result_size == 1) ? kit.pop() : kit.pop_pair(); |
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426 } |
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427 |
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428 kit.replace_call(call, result); |
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429 } |
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430 |
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431 |
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432 CallGenerator* CallGenerator::for_late_inline(ciMethod* method, CallGenerator* inline_cg) { |
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433 return new LateInlineCallGenerator(method, inline_cg); |
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434 } |
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435 |
0 | 436 |
437 //---------------------------WarmCallGenerator-------------------------------- | |
438 // Internal class which handles initial deferral of inlining decisions. | |
439 class WarmCallGenerator : public CallGenerator { | |
440 WarmCallInfo* _call_info; | |
441 CallGenerator* _if_cold; | |
442 CallGenerator* _if_hot; | |
443 bool _is_virtual; // caches virtuality of if_cold | |
444 bool _is_inline; // caches inline-ness of if_hot | |
445 | |
446 public: | |
447 WarmCallGenerator(WarmCallInfo* ci, | |
448 CallGenerator* if_cold, | |
449 CallGenerator* if_hot) | |
450 : CallGenerator(if_cold->method()) | |
451 { | |
452 assert(method() == if_hot->method(), "consistent choices"); | |
453 _call_info = ci; | |
454 _if_cold = if_cold; | |
455 _if_hot = if_hot; | |
456 _is_virtual = if_cold->is_virtual(); | |
457 _is_inline = if_hot->is_inline(); | |
458 } | |
459 | |
460 virtual bool is_inline() const { return _is_inline; } | |
461 virtual bool is_virtual() const { return _is_virtual; } | |
462 virtual bool is_deferred() const { return true; } | |
463 | |
464 virtual JVMState* generate(JVMState* jvms); | |
465 }; | |
466 | |
467 | |
468 CallGenerator* CallGenerator::for_warm_call(WarmCallInfo* ci, | |
469 CallGenerator* if_cold, | |
470 CallGenerator* if_hot) { | |
471 return new WarmCallGenerator(ci, if_cold, if_hot); | |
472 } | |
473 | |
474 JVMState* WarmCallGenerator::generate(JVMState* jvms) { | |
475 Compile* C = Compile::current(); | |
476 if (C->log() != NULL) { | |
477 C->log()->elem("warm_call bci='%d'", jvms->bci()); | |
478 } | |
479 jvms = _if_cold->generate(jvms); | |
480 if (jvms != NULL) { | |
481 Node* m = jvms->map()->control(); | |
482 if (m->is_CatchProj()) m = m->in(0); else m = C->top(); | |
483 if (m->is_Catch()) m = m->in(0); else m = C->top(); | |
484 if (m->is_Proj()) m = m->in(0); else m = C->top(); | |
485 if (m->is_CallJava()) { | |
486 _call_info->set_call(m->as_Call()); | |
487 _call_info->set_hot_cg(_if_hot); | |
488 #ifndef PRODUCT | |
489 if (PrintOpto || PrintOptoInlining) { | |
490 tty->print_cr("Queueing for warm inlining at bci %d:", jvms->bci()); | |
491 tty->print("WCI: "); | |
492 _call_info->print(); | |
493 } | |
494 #endif | |
495 _call_info->set_heat(_call_info->compute_heat()); | |
496 C->set_warm_calls(_call_info->insert_into(C->warm_calls())); | |
497 } | |
498 } | |
499 return jvms; | |
500 } | |
501 | |
502 void WarmCallInfo::make_hot() { | |
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503 Unimplemented(); |
0 | 504 } |
505 | |
506 void WarmCallInfo::make_cold() { | |
507 // No action: Just dequeue. | |
508 } | |
509 | |
510 | |
511 //------------------------PredictedCallGenerator------------------------------ | |
512 // Internal class which handles all out-of-line calls checking receiver type. | |
513 class PredictedCallGenerator : public CallGenerator { | |
514 ciKlass* _predicted_receiver; | |
515 CallGenerator* _if_missed; | |
516 CallGenerator* _if_hit; | |
517 float _hit_prob; | |
518 | |
519 public: | |
520 PredictedCallGenerator(ciKlass* predicted_receiver, | |
521 CallGenerator* if_missed, | |
522 CallGenerator* if_hit, float hit_prob) | |
523 : CallGenerator(if_missed->method()) | |
524 { | |
525 // The call profile data may predict the hit_prob as extreme as 0 or 1. | |
526 // Remove the extremes values from the range. | |
527 if (hit_prob > PROB_MAX) hit_prob = PROB_MAX; | |
528 if (hit_prob < PROB_MIN) hit_prob = PROB_MIN; | |
529 | |
530 _predicted_receiver = predicted_receiver; | |
531 _if_missed = if_missed; | |
532 _if_hit = if_hit; | |
533 _hit_prob = hit_prob; | |
534 } | |
535 | |
536 virtual bool is_virtual() const { return true; } | |
537 virtual bool is_inline() const { return _if_hit->is_inline(); } | |
538 virtual bool is_deferred() const { return _if_hit->is_deferred(); } | |
539 | |
540 virtual JVMState* generate(JVMState* jvms); | |
541 }; | |
542 | |
543 | |
544 CallGenerator* CallGenerator::for_predicted_call(ciKlass* predicted_receiver, | |
545 CallGenerator* if_missed, | |
546 CallGenerator* if_hit, | |
547 float hit_prob) { | |
548 return new PredictedCallGenerator(predicted_receiver, if_missed, if_hit, hit_prob); | |
549 } | |
550 | |
551 | |
552 JVMState* PredictedCallGenerator::generate(JVMState* jvms) { | |
553 GraphKit kit(jvms); | |
554 PhaseGVN& gvn = kit.gvn(); | |
555 // We need an explicit receiver null_check before checking its type. | |
556 // We share a map with the caller, so his JVMS gets adjusted. | |
557 Node* receiver = kit.argument(0); | |
558 | |
559 CompileLog* log = kit.C->log(); | |
560 if (log != NULL) { | |
561 log->elem("predicted_call bci='%d' klass='%d'", | |
562 jvms->bci(), log->identify(_predicted_receiver)); | |
563 } | |
564 | |
565 receiver = kit.null_check_receiver(method()); | |
566 if (kit.stopped()) { | |
567 return kit.transfer_exceptions_into_jvms(); | |
568 } | |
569 | |
570 Node* exact_receiver = receiver; // will get updated in place... | |
571 Node* slow_ctl = kit.type_check_receiver(receiver, | |
572 _predicted_receiver, _hit_prob, | |
573 &exact_receiver); | |
574 | |
575 SafePointNode* slow_map = NULL; | |
576 JVMState* slow_jvms; | |
577 { PreserveJVMState pjvms(&kit); | |
578 kit.set_control(slow_ctl); | |
579 if (!kit.stopped()) { | |
580 slow_jvms = _if_missed->generate(kit.sync_jvms()); | |
581 assert(slow_jvms != NULL, "miss path must not fail to generate"); | |
582 kit.add_exception_states_from(slow_jvms); | |
583 kit.set_map(slow_jvms->map()); | |
584 if (!kit.stopped()) | |
585 slow_map = kit.stop(); | |
586 } | |
587 } | |
588 | |
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589 if (kit.stopped()) { |
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590 // Instance exactly does not matches the desired type. |
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591 kit.set_jvms(slow_jvms); |
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592 return kit.transfer_exceptions_into_jvms(); |
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593 } |
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594 |
0 | 595 // fall through if the instance exactly matches the desired type |
596 kit.replace_in_map(receiver, exact_receiver); | |
597 | |
598 // Make the hot call: | |
599 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); | |
600 if (new_jvms == NULL) { | |
601 // Inline failed, so make a direct call. | |
602 assert(_if_hit->is_inline(), "must have been a failed inline"); | |
603 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); | |
604 new_jvms = cg->generate(kit.sync_jvms()); | |
605 } | |
606 kit.add_exception_states_from(new_jvms); | |
607 kit.set_jvms(new_jvms); | |
608 | |
609 // Need to merge slow and fast? | |
610 if (slow_map == NULL) { | |
611 // The fast path is the only path remaining. | |
612 return kit.transfer_exceptions_into_jvms(); | |
613 } | |
614 | |
615 if (kit.stopped()) { | |
616 // Inlined method threw an exception, so it's just the slow path after all. | |
617 kit.set_jvms(slow_jvms); | |
618 return kit.transfer_exceptions_into_jvms(); | |
619 } | |
620 | |
621 // Finish the diamond. | |
622 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization | |
623 RegionNode* region = new (kit.C, 3) RegionNode(3); | |
624 region->init_req(1, kit.control()); | |
625 region->init_req(2, slow_map->control()); | |
626 kit.set_control(gvn.transform(region)); | |
627 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); | |
628 iophi->set_req(2, slow_map->i_o()); | |
629 kit.set_i_o(gvn.transform(iophi)); | |
630 kit.merge_memory(slow_map->merged_memory(), region, 2); | |
631 uint tos = kit.jvms()->stkoff() + kit.sp(); | |
632 uint limit = slow_map->req(); | |
633 for (uint i = TypeFunc::Parms; i < limit; i++) { | |
634 // Skip unused stack slots; fast forward to monoff(); | |
635 if (i == tos) { | |
636 i = kit.jvms()->monoff(); | |
637 if( i >= limit ) break; | |
638 } | |
639 Node* m = kit.map()->in(i); | |
640 Node* n = slow_map->in(i); | |
641 if (m != n) { | |
642 const Type* t = gvn.type(m)->meet(gvn.type(n)); | |
643 Node* phi = PhiNode::make(region, m, t); | |
644 phi->set_req(2, n); | |
645 kit.map()->set_req(i, gvn.transform(phi)); | |
646 } | |
647 } | |
648 return kit.transfer_exceptions_into_jvms(); | |
649 } | |
650 | |
651 | |
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652 //------------------------PredictedDynamicCallGenerator----------------------- |
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653 // Internal class which handles all out-of-line calls checking receiver type. |
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654 class PredictedDynamicCallGenerator : public CallGenerator { |
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655 ciMethodHandle* _predicted_method_handle; |
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656 CallGenerator* _if_missed; |
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657 CallGenerator* _if_hit; |
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658 float _hit_prob; |
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659 |
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660 public: |
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661 PredictedDynamicCallGenerator(ciMethodHandle* predicted_method_handle, |
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662 CallGenerator* if_missed, |
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663 CallGenerator* if_hit, |
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664 float hit_prob) |
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665 : CallGenerator(if_missed->method()), |
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666 _predicted_method_handle(predicted_method_handle), |
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667 _if_missed(if_missed), |
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668 _if_hit(if_hit), |
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669 _hit_prob(hit_prob) |
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670 {} |
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671 |
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672 virtual bool is_inline() const { return _if_hit->is_inline(); } |
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673 virtual bool is_deferred() const { return _if_hit->is_deferred(); } |
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674 |
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675 virtual JVMState* generate(JVMState* jvms); |
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676 }; |
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677 |
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678 |
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679 CallGenerator* CallGenerator::for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle, |
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680 CallGenerator* if_missed, |
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681 CallGenerator* if_hit, |
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682 float hit_prob) { |
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683 return new PredictedDynamicCallGenerator(predicted_method_handle, if_missed, if_hit, hit_prob); |
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684 } |
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685 |
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686 |
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687 CallGenerator* CallGenerator::for_method_handle_inline(Node* method_handle, JVMState* jvms, |
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688 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
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689 if (method_handle->Opcode() == Op_ConP) { |
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690 const TypeOopPtr* oop_ptr = method_handle->bottom_type()->is_oopptr(); |
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691 ciObject* const_oop = oop_ptr->const_oop(); |
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692 ciMethodHandle* method_handle = const_oop->as_method_handle(); |
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693 |
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694 // Set the callee to have access to the class and signature in |
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695 // the MethodHandleCompiler. |
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696 method_handle->set_callee(callee); |
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697 method_handle->set_caller(caller); |
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698 method_handle->set_call_profile(profile); |
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699 |
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700 // Get an adapter for the MethodHandle. |
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701 ciMethod* target_method = method_handle->get_method_handle_adapter(); |
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702 if (target_method != NULL) { |
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703 CallGenerator* cg = Compile::current()->call_generator(target_method, -1, false, jvms, true, PROB_ALWAYS); |
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704 if (cg != NULL && cg->is_inline()) |
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705 return cg; |
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706 } |
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707 } else if (method_handle->Opcode() == Op_Phi && method_handle->req() == 3 && |
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708 method_handle->in(1)->Opcode() == Op_ConP && method_handle->in(2)->Opcode() == Op_ConP) { |
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709 // selectAlternative idiom merging two constant MethodHandles. |
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710 // Generate a guard so that each can be inlined. We might want to |
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711 // do more inputs at later point but this gets the most common |
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712 // case. |
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713 const TypeOopPtr* oop_ptr = method_handle->in(1)->bottom_type()->is_oopptr(); |
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714 ciObject* const_oop = oop_ptr->const_oop(); |
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715 ciMethodHandle* mh = const_oop->as_method_handle(); |
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716 |
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717 CallGenerator* cg1 = for_method_handle_inline(method_handle->in(1), jvms, caller, callee, profile); |
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718 CallGenerator* cg2 = for_method_handle_inline(method_handle->in(2), jvms, caller, callee, profile); |
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719 if (cg1 != NULL && cg2 != NULL) { |
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720 return new PredictedDynamicCallGenerator(mh, cg2, cg1, PROB_FAIR); |
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721 } |
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722 } |
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723 return NULL; |
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724 } |
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725 |
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726 |
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727 CallGenerator* CallGenerator::for_invokedynamic_inline(ciCallSite* call_site, JVMState* jvms, |
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728 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
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729 ciMethodHandle* method_handle = call_site->get_target(); |
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730 |
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731 // Set the callee to have access to the class and signature in the |
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732 // MethodHandleCompiler. |
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733 method_handle->set_callee(callee); |
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734 method_handle->set_caller(caller); |
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735 method_handle->set_call_profile(profile); |
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736 |
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737 // Get an adapter for the MethodHandle. |
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738 ciMethod* target_method = method_handle->get_invokedynamic_adapter(); |
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739 if (target_method != NULL) { |
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|
740 Compile *C = Compile::current(); |
3894
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741 CallGenerator* cg = C->call_generator(target_method, -1, false, jvms, true, PROB_ALWAYS); |
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742 if (cg != NULL && cg->is_inline()) { |
3852
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|
743 // Add a dependence for invalidation of the optimization. |
3901
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744 if (!call_site->is_constant_call_site()) { |
3894
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|
745 C->dependencies()->assert_call_site_target_value(call_site, method_handle); |
3852
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|
746 } |
3894
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|
747 return cg; |
3852
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|
748 } |
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|
749 } |
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|
750 return NULL; |
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|
751 } |
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|
752 |
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|
753 |
1138
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|
754 JVMState* PredictedDynamicCallGenerator::generate(JVMState* jvms) { |
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|
755 GraphKit kit(jvms); |
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|
756 PhaseGVN& gvn = kit.gvn(); |
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|
757 |
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|
758 CompileLog* log = kit.C->log(); |
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|
759 if (log != NULL) { |
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|
760 log->elem("predicted_dynamic_call bci='%d'", jvms->bci()); |
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|
761 } |
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|
762 |
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763 const TypeOopPtr* predicted_mh_ptr = TypeOopPtr::make_from_constant(_predicted_method_handle, true); |
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764 Node* predicted_mh = kit.makecon(predicted_mh_ptr); |
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|
765 |
3752
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|
766 Node* bol = NULL; |
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|
767 int bc = jvms->method()->java_code_at_bci(jvms->bci()); |
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768 if (bc == Bytecodes::_invokespecial) { |
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|
769 // This is the selectAlternative idiom for guardWithTest |
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|
770 Node* receiver = kit.argument(0); |
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changeset
|
771 |
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parents:
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changeset
|
772 // Check if the MethodHandle is the expected one |
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|
773 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(receiver, predicted_mh)); |
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|
774 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
f918d6096e23
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|
775 } else { |
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|
776 assert(bc == Bytecodes::_invokedynamic, "must be"); |
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|
777 // Get the constant pool cache from the caller class. |
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changeset
|
778 ciMethod* caller_method = jvms->method(); |
f918d6096e23
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|
779 ciBytecodeStream str(caller_method); |
f918d6096e23
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changeset
|
780 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
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|
781 ciCPCache* cpcache = str.get_cpcache(); |
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changeset
|
782 |
f918d6096e23
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parents:
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diff
changeset
|
783 // Get the offset of the CallSite from the constant pool cache |
f918d6096e23
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diff
changeset
|
784 // pointer. |
f918d6096e23
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diff
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|
785 int index = str.get_method_index(); |
f918d6096e23
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changeset
|
786 size_t call_site_offset = cpcache->get_f1_offset(index); |
f918d6096e23
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parents:
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diff
changeset
|
787 |
f918d6096e23
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parents:
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diff
changeset
|
788 // Load the CallSite object from the constant pool cache. |
f918d6096e23
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parents:
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diff
changeset
|
789 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
f918d6096e23
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parents:
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|
790 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
f918d6096e23
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parents:
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diff
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|
791 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
f918d6096e23
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parents:
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|
792 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
f918d6096e23
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never
parents:
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diff
changeset
|
793 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
794 // Load the target MethodHandle from the CallSite object. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
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diff
changeset
|
795 Node* target_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
f918d6096e23
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|
796 Node* target_mh = kit.make_load(kit.control(), target_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
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parents:
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diff
changeset
|
797 |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
798 // Check if the MethodHandle is still the same. |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
never
parents:
2443
diff
changeset
|
799 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(target_mh, predicted_mh)); |
f918d6096e23
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diff
changeset
|
800 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
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parents:
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diff
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|
801 } |
1138
dd57230ba8fe
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1137
diff
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|
802 IfNode* iff = kit.create_and_xform_if(kit.control(), bol, _hit_prob, COUNT_UNKNOWN); |
dd57230ba8fe
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|
803 kit.set_control( gvn.transform(new(kit.C, 1) IfTrueNode (iff))); |
dd57230ba8fe
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|
804 Node* slow_ctl = gvn.transform(new(kit.C, 1) IfFalseNode(iff)); |
dd57230ba8fe
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diff
changeset
|
805 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
806 SafePointNode* slow_map = NULL; |
dd57230ba8fe
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diff
changeset
|
807 JVMState* slow_jvms; |
dd57230ba8fe
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diff
changeset
|
808 { PreserveJVMState pjvms(&kit); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
809 kit.set_control(slow_ctl); |
dd57230ba8fe
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diff
changeset
|
810 if (!kit.stopped()) { |
dd57230ba8fe
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diff
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|
811 slow_jvms = _if_missed->generate(kit.sync_jvms()); |
dd57230ba8fe
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diff
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|
812 assert(slow_jvms != NULL, "miss path must not fail to generate"); |
dd57230ba8fe
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|
813 kit.add_exception_states_from(slow_jvms); |
dd57230ba8fe
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diff
changeset
|
814 kit.set_map(slow_jvms->map()); |
dd57230ba8fe
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diff
changeset
|
815 if (!kit.stopped()) |
dd57230ba8fe
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diff
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|
816 slow_map = kit.stop(); |
dd57230ba8fe
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|
817 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
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|
818 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
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|
819 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
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|
820 if (kit.stopped()) { |
dd57230ba8fe
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diff
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|
821 // Instance exactly does not matches the desired type. |
dd57230ba8fe
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|
822 kit.set_jvms(slow_jvms); |
dd57230ba8fe
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|
823 return kit.transfer_exceptions_into_jvms(); |
dd57230ba8fe
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diff
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|
824 } |
dd57230ba8fe
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changeset
|
825 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
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|
826 // Make the hot call: |
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|
827 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); |
dd57230ba8fe
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|
828 if (new_jvms == NULL) { |
dd57230ba8fe
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diff
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|
829 // Inline failed, so make a direct call. |
dd57230ba8fe
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|
830 assert(_if_hit->is_inline(), "must have been a failed inline"); |
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|
831 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); |
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|
832 new_jvms = cg->generate(kit.sync_jvms()); |
dd57230ba8fe
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|
833 } |
dd57230ba8fe
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|
834 kit.add_exception_states_from(new_jvms); |
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|
835 kit.set_jvms(new_jvms); |
dd57230ba8fe
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|
836 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
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|
837 // Need to merge slow and fast? |
dd57230ba8fe
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|
838 if (slow_map == NULL) { |
dd57230ba8fe
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|
839 // The fast path is the only path remaining. |
dd57230ba8fe
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|
840 return kit.transfer_exceptions_into_jvms(); |
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diff
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|
841 } |
dd57230ba8fe
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|
842 |
dd57230ba8fe
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|
843 if (kit.stopped()) { |
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|
844 // Inlined method threw an exception, so it's just the slow path after all. |
dd57230ba8fe
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|
845 kit.set_jvms(slow_jvms); |
dd57230ba8fe
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|
846 return kit.transfer_exceptions_into_jvms(); |
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|
847 } |
dd57230ba8fe
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|
848 |
dd57230ba8fe
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diff
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|
849 // Finish the diamond. |
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|
850 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization |
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|
851 RegionNode* region = new (kit.C, 3) RegionNode(3); |
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|
852 region->init_req(1, kit.control()); |
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diff
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|
853 region->init_req(2, slow_map->control()); |
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diff
changeset
|
854 kit.set_control(gvn.transform(region)); |
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|
855 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); |
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|
856 iophi->set_req(2, slow_map->i_o()); |
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|
857 kit.set_i_o(gvn.transform(iophi)); |
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|
858 kit.merge_memory(slow_map->merged_memory(), region, 2); |
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|
859 uint tos = kit.jvms()->stkoff() + kit.sp(); |
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changeset
|
860 uint limit = slow_map->req(); |
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changeset
|
861 for (uint i = TypeFunc::Parms; i < limit; i++) { |
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diff
changeset
|
862 // Skip unused stack slots; fast forward to monoff(); |
dd57230ba8fe
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diff
changeset
|
863 if (i == tos) { |
dd57230ba8fe
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diff
changeset
|
864 i = kit.jvms()->monoff(); |
dd57230ba8fe
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changeset
|
865 if( i >= limit ) break; |
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|
866 } |
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867 Node* m = kit.map()->in(i); |
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868 Node* n = slow_map->in(i); |
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869 if (m != n) { |
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870 const Type* t = gvn.type(m)->meet(gvn.type(n)); |
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871 Node* phi = PhiNode::make(region, m, t); |
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872 phi->set_req(2, n); |
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873 kit.map()->set_req(i, gvn.transform(phi)); |
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874 } |
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875 } |
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876 return kit.transfer_exceptions_into_jvms(); |
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877 } |
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878 |
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879 |
0 | 880 //-------------------------UncommonTrapCallGenerator----------------------------- |
881 // Internal class which handles all out-of-line calls checking receiver type. | |
882 class UncommonTrapCallGenerator : public CallGenerator { | |
883 Deoptimization::DeoptReason _reason; | |
884 Deoptimization::DeoptAction _action; | |
885 | |
886 public: | |
887 UncommonTrapCallGenerator(ciMethod* m, | |
888 Deoptimization::DeoptReason reason, | |
889 Deoptimization::DeoptAction action) | |
890 : CallGenerator(m) | |
891 { | |
892 _reason = reason; | |
893 _action = action; | |
894 } | |
895 | |
896 virtual bool is_virtual() const { ShouldNotReachHere(); return false; } | |
897 virtual bool is_trap() const { return true; } | |
898 | |
899 virtual JVMState* generate(JVMState* jvms); | |
900 }; | |
901 | |
902 | |
903 CallGenerator* | |
904 CallGenerator::for_uncommon_trap(ciMethod* m, | |
905 Deoptimization::DeoptReason reason, | |
906 Deoptimization::DeoptAction action) { | |
907 return new UncommonTrapCallGenerator(m, reason, action); | |
908 } | |
909 | |
910 | |
911 JVMState* UncommonTrapCallGenerator::generate(JVMState* jvms) { | |
912 GraphKit kit(jvms); | |
913 // Take the trap with arguments pushed on the stack. (Cf. null_check_receiver). | |
914 int nargs = method()->arg_size(); | |
915 kit.inc_sp(nargs); | |
916 assert(nargs <= kit.sp() && kit.sp() <= jvms->stk_size(), "sane sp w/ args pushed"); | |
917 if (_reason == Deoptimization::Reason_class_check && | |
918 _action == Deoptimization::Action_maybe_recompile) { | |
919 // Temp fix for 6529811 | |
920 // Don't allow uncommon_trap to override our decision to recompile in the event | |
921 // of a class cast failure for a monomorphic call as it will never let us convert | |
922 // the call to either bi-morphic or megamorphic and can lead to unc-trap loops | |
923 bool keep_exact_action = true; | |
924 kit.uncommon_trap(_reason, _action, NULL, "monomorphic vcall checkcast", false, keep_exact_action); | |
925 } else { | |
926 kit.uncommon_trap(_reason, _action); | |
927 } | |
928 return kit.transfer_exceptions_into_jvms(); | |
929 } | |
930 | |
931 // (Note: Moved hook_up_call to GraphKit::set_edges_for_java_call.) | |
932 | |
933 // (Node: Merged hook_up_exits into ParseGenerator::generate.) | |
934 | |
935 #define NODES_OVERHEAD_PER_METHOD (30.0) | |
936 #define NODES_PER_BYTECODE (9.5) | |
937 | |
938 void WarmCallInfo::init(JVMState* call_site, ciMethod* call_method, ciCallProfile& profile, float prof_factor) { | |
939 int call_count = profile.count(); | |
940 int code_size = call_method->code_size(); | |
941 | |
942 // Expected execution count is based on the historical count: | |
943 _count = call_count < 0 ? 1 : call_site->method()->scale_count(call_count, prof_factor); | |
944 | |
945 // Expected profit from inlining, in units of simple call-overheads. | |
946 _profit = 1.0; | |
947 | |
948 // Expected work performed by the call in units of call-overheads. | |
949 // %%% need an empirical curve fit for "work" (time in call) | |
950 float bytecodes_per_call = 3; | |
951 _work = 1.0 + code_size / bytecodes_per_call; | |
952 | |
953 // Expected size of compilation graph: | |
954 // -XX:+PrintParseStatistics once reported: | |
955 // Methods seen: 9184 Methods parsed: 9184 Nodes created: 1582391 | |
956 // Histogram of 144298 parsed bytecodes: | |
957 // %%% Need an better predictor for graph size. | |
958 _size = NODES_OVERHEAD_PER_METHOD + (NODES_PER_BYTECODE * code_size); | |
959 } | |
960 | |
961 // is_cold: Return true if the node should never be inlined. | |
962 // This is true if any of the key metrics are extreme. | |
963 bool WarmCallInfo::is_cold() const { | |
964 if (count() < WarmCallMinCount) return true; | |
965 if (profit() < WarmCallMinProfit) return true; | |
966 if (work() > WarmCallMaxWork) return true; | |
967 if (size() > WarmCallMaxSize) return true; | |
968 return false; | |
969 } | |
970 | |
971 // is_hot: Return true if the node should be inlined immediately. | |
972 // This is true if any of the key metrics are extreme. | |
973 bool WarmCallInfo::is_hot() const { | |
974 assert(!is_cold(), "eliminate is_cold cases before testing is_hot"); | |
975 if (count() >= HotCallCountThreshold) return true; | |
976 if (profit() >= HotCallProfitThreshold) return true; | |
977 if (work() <= HotCallTrivialWork) return true; | |
978 if (size() <= HotCallTrivialSize) return true; | |
979 return false; | |
980 } | |
981 | |
982 // compute_heat: | |
983 float WarmCallInfo::compute_heat() const { | |
984 assert(!is_cold(), "compute heat only on warm nodes"); | |
985 assert(!is_hot(), "compute heat only on warm nodes"); | |
986 int min_size = MAX2(0, (int)HotCallTrivialSize); | |
987 int max_size = MIN2(500, (int)WarmCallMaxSize); | |
988 float method_size = (size() - min_size) / MAX2(1, max_size - min_size); | |
989 float size_factor; | |
990 if (method_size < 0.05) size_factor = 4; // 2 sigmas better than avg. | |
991 else if (method_size < 0.15) size_factor = 2; // 1 sigma better than avg. | |
992 else if (method_size < 0.5) size_factor = 1; // better than avg. | |
993 else size_factor = 0.5; // worse than avg. | |
994 return (count() * profit() * size_factor); | |
995 } | |
996 | |
997 bool WarmCallInfo::warmer_than(WarmCallInfo* that) { | |
998 assert(this != that, "compare only different WCIs"); | |
999 assert(this->heat() != 0 && that->heat() != 0, "call compute_heat 1st"); | |
1000 if (this->heat() > that->heat()) return true; | |
1001 if (this->heat() < that->heat()) return false; | |
1002 assert(this->heat() == that->heat(), "no NaN heat allowed"); | |
1003 // Equal heat. Break the tie some other way. | |
1004 if (!this->call() || !that->call()) return (address)this > (address)that; | |
1005 return this->call()->_idx > that->call()->_idx; | |
1006 } | |
1007 | |
1008 //#define UNINIT_NEXT ((WarmCallInfo*)badAddress) | |
1009 #define UNINIT_NEXT ((WarmCallInfo*)NULL) | |
1010 | |
1011 WarmCallInfo* WarmCallInfo::insert_into(WarmCallInfo* head) { | |
1012 assert(next() == UNINIT_NEXT, "not yet on any list"); | |
1013 WarmCallInfo* prev_p = NULL; | |
1014 WarmCallInfo* next_p = head; | |
1015 while (next_p != NULL && next_p->warmer_than(this)) { | |
1016 prev_p = next_p; | |
1017 next_p = prev_p->next(); | |
1018 } | |
1019 // Install this between prev_p and next_p. | |
1020 this->set_next(next_p); | |
1021 if (prev_p == NULL) | |
1022 head = this; | |
1023 else | |
1024 prev_p->set_next(this); | |
1025 return head; | |
1026 } | |
1027 | |
1028 WarmCallInfo* WarmCallInfo::remove_from(WarmCallInfo* head) { | |
1029 WarmCallInfo* prev_p = NULL; | |
1030 WarmCallInfo* next_p = head; | |
1031 while (next_p != this) { | |
1032 assert(next_p != NULL, "this must be in the list somewhere"); | |
1033 prev_p = next_p; | |
1034 next_p = prev_p->next(); | |
1035 } | |
1036 next_p = this->next(); | |
1037 debug_only(this->set_next(UNINIT_NEXT)); | |
1038 // Remove this from between prev_p and next_p. | |
1039 if (prev_p == NULL) | |
1040 head = next_p; | |
1041 else | |
1042 prev_p->set_next(next_p); | |
1043 return head; | |
1044 } | |
1045 | |
2443
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1046 WarmCallInfo WarmCallInfo::_always_hot(WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE(), |
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1047 WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE()); |
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1048 WarmCallInfo WarmCallInfo::_always_cold(WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE(), |
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1049 WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE()); |
0 | 1050 |
1051 WarmCallInfo* WarmCallInfo::always_hot() { | |
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1052 assert(_always_hot.is_hot(), "must always be hot"); |
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1053 return &_always_hot; |
0 | 1054 } |
1055 | |
1056 WarmCallInfo* WarmCallInfo::always_cold() { | |
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1057 assert(_always_cold.is_cold(), "must always be cold"); |
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1058 return &_always_cold; |
0 | 1059 } |
1060 | |
1061 | |
1062 #ifndef PRODUCT | |
1063 | |
1064 void WarmCallInfo::print() const { | |
1065 tty->print("%s : C=%6.1f P=%6.1f W=%6.1f S=%6.1f H=%6.1f -> %p", | |
1066 is_cold() ? "cold" : is_hot() ? "hot " : "warm", | |
1067 count(), profit(), work(), size(), compute_heat(), next()); | |
1068 tty->cr(); | |
1069 if (call() != NULL) call()->dump(); | |
1070 } | |
1071 | |
1072 void print_wci(WarmCallInfo* ci) { | |
1073 ci->print(); | |
1074 } | |
1075 | |
1076 void WarmCallInfo::print_all() const { | |
1077 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
1078 p->print(); | |
1079 } | |
1080 | |
1081 int WarmCallInfo::count_all() const { | |
1082 int cnt = 0; | |
1083 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
1084 cnt++; | |
1085 return cnt; | |
1086 } | |
1087 | |
1088 #endif //PRODUCT |