Mercurial > hg > truffle
annotate src/share/vm/opto/callGenerator.cpp @ 4117:a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Thu, 17 Nov 2011 04:07:30 -0800 |
| parents | 83d0b5cd1438 |
| children | 847da049d62f |
| rev | line source |
|---|---|
| 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 } |
| 0 | 153 } |
| 154 kit.set_arguments_for_java_call(call); | |
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155 kit.set_edges_for_java_call(call, false, _separate_io_proj); |
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156 Node* ret = kit.set_results_for_java_call(call, _separate_io_proj); |
| 0 | 157 kit.push_node(method()->return_type()->basic_type(), ret); |
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158 _call_node = call; // Save the call node in case we need it later |
| 0 | 159 return kit.transfer_exceptions_into_jvms(); |
| 160 } | |
| 161 | |
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162 //---------------------------DynamicCallGenerator----------------------------- |
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163 // Internal class which handles all out-of-line invokedynamic calls. |
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164 class DynamicCallGenerator : public CallGenerator { |
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165 public: |
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166 DynamicCallGenerator(ciMethod* method) |
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167 : CallGenerator(method) |
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168 { |
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169 } |
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170 virtual JVMState* generate(JVMState* jvms); |
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171 }; |
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172 |
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173 JVMState* DynamicCallGenerator::generate(JVMState* jvms) { |
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174 GraphKit kit(jvms); |
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175 |
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176 if (kit.C->log() != NULL) { |
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177 kit.C->log()->elem("dynamic_call bci='%d'", jvms->bci()); |
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178 } |
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179 |
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180 // Get the constant pool cache from the caller class. |
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181 ciMethod* caller_method = jvms->method(); |
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182 ciBytecodeStream str(caller_method); |
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183 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
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184 assert(str.cur_bc() == Bytecodes::_invokedynamic, "wrong place to issue a dynamic call!"); |
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185 ciCPCache* cpcache = str.get_cpcache(); |
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186 |
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187 // Get the offset of the CallSite from the constant pool cache |
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188 // pointer. |
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189 int index = str.get_method_index(); |
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190 size_t call_site_offset = cpcache->get_f1_offset(index); |
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191 |
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192 // Load the CallSite object from the constant pool cache. |
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193 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
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194 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
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195 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
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196 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
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197 |
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198 // Load the target MethodHandle from the CallSite object. |
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199 Node* target_mh_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
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200 Node* target_mh = kit.make_load(kit.control(), target_mh_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
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201 |
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202 address resolve_stub = SharedRuntime::get_resolve_opt_virtual_call_stub(); |
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203 |
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204 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), resolve_stub, method(), kit.bci()); |
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205 // invokedynamic is treated as an optimized invokevirtual. |
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206 call->set_optimized_virtual(true); |
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207 // Take extra care (in the presence of argument motion) not to trash the SP: |
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208 call->set_method_handle_invoke(true); |
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209 |
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210 // Pass the target MethodHandle as first argument and shift the |
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211 // other arguments. |
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212 call->init_req(0 + TypeFunc::Parms, target_mh); |
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213 uint nargs = call->method()->arg_size(); |
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214 for (uint i = 1; i < nargs; i++) { |
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215 Node* arg = kit.argument(i - 1); |
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216 call->init_req(i + TypeFunc::Parms, arg); |
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217 } |
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218 |
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219 kit.set_edges_for_java_call(call); |
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220 Node* ret = kit.set_results_for_java_call(call); |
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221 kit.push_node(method()->return_type()->basic_type(), ret); |
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222 return kit.transfer_exceptions_into_jvms(); |
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223 } |
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224 |
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225 //--------------------------VirtualCallGenerator------------------------------ |
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226 // Internal class which handles all out-of-line calls checking receiver type. |
| 0 | 227 class VirtualCallGenerator : public CallGenerator { |
| 228 private: | |
| 229 int _vtable_index; | |
| 230 public: | |
| 231 VirtualCallGenerator(ciMethod* method, int vtable_index) | |
| 232 : CallGenerator(method), _vtable_index(vtable_index) | |
| 233 { | |
| 234 assert(vtable_index == methodOopDesc::invalid_vtable_index || | |
| 235 vtable_index >= 0, "either invalid or usable"); | |
| 236 } | |
| 237 virtual bool is_virtual() const { return true; } | |
| 238 virtual JVMState* generate(JVMState* jvms); | |
| 239 }; | |
| 240 | |
| 241 JVMState* VirtualCallGenerator::generate(JVMState* jvms) { | |
| 242 GraphKit kit(jvms); | |
| 243 Node* receiver = kit.argument(0); | |
| 244 | |
| 245 if (kit.C->log() != NULL) { | |
| 246 kit.C->log()->elem("virtual_call bci='%d'", jvms->bci()); | |
| 247 } | |
| 248 | |
| 249 // If the receiver is a constant null, do not torture the system | |
| 250 // by attempting to call through it. The compile will proceed | |
| 251 // correctly, but may bail out in final_graph_reshaping, because | |
| 252 // the call instruction will have a seemingly deficient out-count. | |
| 253 // (The bailout says something misleading about an "infinite loop".) | |
| 254 if (kit.gvn().type(receiver)->higher_equal(TypePtr::NULL_PTR)) { | |
| 255 kit.inc_sp(method()->arg_size()); // restore arguments | |
| 256 kit.uncommon_trap(Deoptimization::Reason_null_check, | |
| 257 Deoptimization::Action_none, | |
| 258 NULL, "null receiver"); | |
| 259 return kit.transfer_exceptions_into_jvms(); | |
| 260 } | |
| 261 | |
| 262 // Ideally we would unconditionally do a null check here and let it | |
| 263 // be converted to an implicit check based on profile information. | |
| 264 // However currently the conversion to implicit null checks in | |
| 265 // Block::implicit_null_check() only looks for loads and stores, not calls. | |
| 266 ciMethod *caller = kit.method(); | |
| 267 ciMethodData *caller_md = (caller == NULL) ? NULL : caller->method_data(); | |
| 268 if (!UseInlineCaches || !ImplicitNullChecks || | |
| 269 ((ImplicitNullCheckThreshold > 0) && caller_md && | |
| 270 (caller_md->trap_count(Deoptimization::Reason_null_check) | |
| 271 >= (uint)ImplicitNullCheckThreshold))) { | |
| 272 // Make an explicit receiver null_check as part of this call. | |
| 273 // Since we share a map with the caller, his JVMS gets adjusted. | |
| 274 receiver = kit.null_check_receiver(method()); | |
| 275 if (kit.stopped()) { | |
| 276 // And dump it back to the caller, decorated with any exceptions: | |
| 277 return kit.transfer_exceptions_into_jvms(); | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 assert(!method()->is_static(), "virtual call must not be to static"); | |
| 282 assert(!method()->is_final(), "virtual call should not be to final"); | |
| 283 assert(!method()->is_private(), "virtual call should not be to private"); | |
| 284 assert(_vtable_index == methodOopDesc::invalid_vtable_index || !UseInlineCaches, | |
| 285 "no vtable calls if +UseInlineCaches "); | |
| 286 address target = SharedRuntime::get_resolve_virtual_call_stub(); | |
| 287 // Normal inline cache used for call | |
| 288 CallDynamicJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallDynamicJavaNode(tf(), target, method(), _vtable_index, kit.bci()); | |
| 289 kit.set_arguments_for_java_call(call); | |
| 290 kit.set_edges_for_java_call(call); | |
| 291 Node* ret = kit.set_results_for_java_call(call); | |
| 292 kit.push_node(method()->return_type()->basic_type(), ret); | |
| 293 | |
| 294 // Represent the effect of an implicit receiver null_check | |
| 295 // as part of this call. Since we share a map with the caller, | |
| 296 // his JVMS gets adjusted. | |
| 297 kit.cast_not_null(receiver); | |
| 298 return kit.transfer_exceptions_into_jvms(); | |
| 299 } | |
| 300 | |
| 301 CallGenerator* CallGenerator::for_inline(ciMethod* m, float expected_uses) { | |
|
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302 if (InlineTree::check_can_parse(m) != NULL) return NULL; |
| 0 | 303 return new ParseGenerator(m, expected_uses); |
| 304 } | |
| 305 | |
| 306 // As a special case, the JVMS passed to this CallGenerator is | |
| 307 // for the method execution already in progress, not just the JVMS | |
| 308 // of the caller. Thus, this CallGenerator cannot be mixed with others! | |
| 309 CallGenerator* CallGenerator::for_osr(ciMethod* m, int osr_bci) { | |
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310 if (InlineTree::check_can_parse(m) != NULL) return NULL; |
| 0 | 311 float past_uses = m->interpreter_invocation_count(); |
| 312 float expected_uses = past_uses; | |
| 313 return new ParseGenerator(m, expected_uses, true); | |
| 314 } | |
| 315 | |
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316 CallGenerator* CallGenerator::for_direct_call(ciMethod* m, bool separate_io_proj) { |
| 0 | 317 assert(!m->is_abstract(), "for_direct_call mismatch"); |
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318 return new DirectCallGenerator(m, separate_io_proj); |
| 0 | 319 } |
| 320 | |
| 321 CallGenerator* CallGenerator::for_virtual_call(ciMethod* m, int vtable_index) { | |
| 322 assert(!m->is_static(), "for_virtual_call mismatch"); | |
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323 assert(!m->is_method_handle_invoke(), "should be a direct call"); |
| 0 | 324 return new VirtualCallGenerator(m, vtable_index); |
| 325 } | |
| 326 | |
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327 CallGenerator* CallGenerator::for_dynamic_call(ciMethod* m) { |
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328 assert(m->is_method_handle_invoke() || m->is_method_handle_adapter(), "for_dynamic_call mismatch"); |
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329 return new DynamicCallGenerator(m); |
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330 } |
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331 |
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332 // Allow inlining decisions to be delayed |
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333 class LateInlineCallGenerator : public DirectCallGenerator { |
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334 CallGenerator* _inline_cg; |
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335 |
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336 public: |
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337 LateInlineCallGenerator(ciMethod* method, CallGenerator* inline_cg) : |
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338 DirectCallGenerator(method, true), _inline_cg(inline_cg) {} |
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339 |
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340 virtual bool is_late_inline() const { return true; } |
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341 |
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342 // Convert the CallStaticJava into an inline |
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343 virtual void do_late_inline(); |
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344 |
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345 JVMState* generate(JVMState* jvms) { |
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346 // Record that this call site should be revisited once the main |
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347 // parse is finished. |
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348 Compile::current()->add_late_inline(this); |
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349 |
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350 // Emit the CallStaticJava and request separate projections so |
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351 // that the late inlining logic can distinguish between fall |
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352 // through and exceptional uses of the memory and io projections |
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353 // as is done for allocations and macro expansion. |
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354 return DirectCallGenerator::generate(jvms); |
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355 } |
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356 |
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357 }; |
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358 |
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359 |
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360 void LateInlineCallGenerator::do_late_inline() { |
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361 // Can't inline it |
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362 if (call_node() == NULL || call_node()->outcnt() == 0 || |
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363 call_node()->in(0) == NULL || call_node()->in(0)->is_top()) |
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364 return; |
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365 |
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366 CallStaticJavaNode* call = call_node(); |
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367 |
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368 // Make a clone of the JVMState that appropriate to use for driving a parse |
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369 Compile* C = Compile::current(); |
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370 JVMState* jvms = call->jvms()->clone_shallow(C); |
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371 uint size = call->req(); |
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372 SafePointNode* map = new (C, size) SafePointNode(size, jvms); |
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373 for (uint i1 = 0; i1 < size; i1++) { |
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374 map->init_req(i1, call->in(i1)); |
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375 } |
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376 |
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377 // Make sure the state is a MergeMem for parsing. |
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378 if (!map->in(TypeFunc::Memory)->is_MergeMem()) { |
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379 map->set_req(TypeFunc::Memory, MergeMemNode::make(C, map->in(TypeFunc::Memory))); |
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380 } |
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381 |
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382 // Make enough space for the expression stack and transfer the incoming arguments |
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383 int nargs = method()->arg_size(); |
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384 jvms->set_map(map); |
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385 map->ensure_stack(jvms, jvms->method()->max_stack()); |
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386 if (nargs > 0) { |
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387 for (int i1 = 0; i1 < nargs; i1++) { |
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388 map->set_req(i1 + jvms->argoff(), call->in(TypeFunc::Parms + i1)); |
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389 } |
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390 } |
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391 |
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392 CompileLog* log = C->log(); |
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393 if (log != NULL) { |
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394 log->head("late_inline method='%d'", log->identify(method())); |
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395 JVMState* p = jvms; |
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396 while (p != NULL) { |
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397 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method())); |
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398 p = p->caller(); |
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399 } |
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400 log->tail("late_inline"); |
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401 } |
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402 |
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403 // Setup default node notes to be picked up by the inlining |
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404 Node_Notes* old_nn = C->default_node_notes(); |
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405 if (old_nn != NULL) { |
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406 Node_Notes* entry_nn = old_nn->clone(C); |
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407 entry_nn->set_jvms(jvms); |
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408 C->set_default_node_notes(entry_nn); |
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409 } |
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410 |
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411 // Now perform the inling using the synthesized JVMState |
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412 JVMState* new_jvms = _inline_cg->generate(jvms); |
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413 if (new_jvms == NULL) return; // no change |
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414 if (C->failing()) return; |
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415 |
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416 // Capture any exceptional control flow |
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417 GraphKit kit(new_jvms); |
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418 |
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419 // Find the result object |
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420 Node* result = C->top(); |
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421 int result_size = method()->return_type()->size(); |
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422 if (result_size != 0 && !kit.stopped()) { |
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423 result = (result_size == 1) ? kit.pop() : kit.pop_pair(); |
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424 } |
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425 |
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426 kit.replace_call(call, result); |
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427 } |
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428 |
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429 |
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430 CallGenerator* CallGenerator::for_late_inline(ciMethod* method, CallGenerator* inline_cg) { |
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431 return new LateInlineCallGenerator(method, inline_cg); |
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432 } |
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433 |
| 0 | 434 |
| 435 //---------------------------WarmCallGenerator-------------------------------- | |
| 436 // Internal class which handles initial deferral of inlining decisions. | |
| 437 class WarmCallGenerator : public CallGenerator { | |
| 438 WarmCallInfo* _call_info; | |
| 439 CallGenerator* _if_cold; | |
| 440 CallGenerator* _if_hot; | |
| 441 bool _is_virtual; // caches virtuality of if_cold | |
| 442 bool _is_inline; // caches inline-ness of if_hot | |
| 443 | |
| 444 public: | |
| 445 WarmCallGenerator(WarmCallInfo* ci, | |
| 446 CallGenerator* if_cold, | |
| 447 CallGenerator* if_hot) | |
| 448 : CallGenerator(if_cold->method()) | |
| 449 { | |
| 450 assert(method() == if_hot->method(), "consistent choices"); | |
| 451 _call_info = ci; | |
| 452 _if_cold = if_cold; | |
| 453 _if_hot = if_hot; | |
| 454 _is_virtual = if_cold->is_virtual(); | |
| 455 _is_inline = if_hot->is_inline(); | |
| 456 } | |
| 457 | |
| 458 virtual bool is_inline() const { return _is_inline; } | |
| 459 virtual bool is_virtual() const { return _is_virtual; } | |
| 460 virtual bool is_deferred() const { return true; } | |
| 461 | |
| 462 virtual JVMState* generate(JVMState* jvms); | |
| 463 }; | |
| 464 | |
| 465 | |
| 466 CallGenerator* CallGenerator::for_warm_call(WarmCallInfo* ci, | |
| 467 CallGenerator* if_cold, | |
| 468 CallGenerator* if_hot) { | |
| 469 return new WarmCallGenerator(ci, if_cold, if_hot); | |
| 470 } | |
| 471 | |
| 472 JVMState* WarmCallGenerator::generate(JVMState* jvms) { | |
| 473 Compile* C = Compile::current(); | |
| 474 if (C->log() != NULL) { | |
| 475 C->log()->elem("warm_call bci='%d'", jvms->bci()); | |
| 476 } | |
| 477 jvms = _if_cold->generate(jvms); | |
| 478 if (jvms != NULL) { | |
| 479 Node* m = jvms->map()->control(); | |
| 480 if (m->is_CatchProj()) m = m->in(0); else m = C->top(); | |
| 481 if (m->is_Catch()) m = m->in(0); else m = C->top(); | |
| 482 if (m->is_Proj()) m = m->in(0); else m = C->top(); | |
| 483 if (m->is_CallJava()) { | |
| 484 _call_info->set_call(m->as_Call()); | |
| 485 _call_info->set_hot_cg(_if_hot); | |
| 486 #ifndef PRODUCT | |
| 487 if (PrintOpto || PrintOptoInlining) { | |
| 488 tty->print_cr("Queueing for warm inlining at bci %d:", jvms->bci()); | |
| 489 tty->print("WCI: "); | |
| 490 _call_info->print(); | |
| 491 } | |
| 492 #endif | |
| 493 _call_info->set_heat(_call_info->compute_heat()); | |
| 494 C->set_warm_calls(_call_info->insert_into(C->warm_calls())); | |
| 495 } | |
| 496 } | |
| 497 return jvms; | |
| 498 } | |
| 499 | |
| 500 void WarmCallInfo::make_hot() { | |
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501 Unimplemented(); |
| 0 | 502 } |
| 503 | |
| 504 void WarmCallInfo::make_cold() { | |
| 505 // No action: Just dequeue. | |
| 506 } | |
| 507 | |
| 508 | |
| 509 //------------------------PredictedCallGenerator------------------------------ | |
| 510 // Internal class which handles all out-of-line calls checking receiver type. | |
| 511 class PredictedCallGenerator : public CallGenerator { | |
| 512 ciKlass* _predicted_receiver; | |
| 513 CallGenerator* _if_missed; | |
| 514 CallGenerator* _if_hit; | |
| 515 float _hit_prob; | |
| 516 | |
| 517 public: | |
| 518 PredictedCallGenerator(ciKlass* predicted_receiver, | |
| 519 CallGenerator* if_missed, | |
| 520 CallGenerator* if_hit, float hit_prob) | |
| 521 : CallGenerator(if_missed->method()) | |
| 522 { | |
| 523 // The call profile data may predict the hit_prob as extreme as 0 or 1. | |
| 524 // Remove the extremes values from the range. | |
| 525 if (hit_prob > PROB_MAX) hit_prob = PROB_MAX; | |
| 526 if (hit_prob < PROB_MIN) hit_prob = PROB_MIN; | |
| 527 | |
| 528 _predicted_receiver = predicted_receiver; | |
| 529 _if_missed = if_missed; | |
| 530 _if_hit = if_hit; | |
| 531 _hit_prob = hit_prob; | |
| 532 } | |
| 533 | |
| 534 virtual bool is_virtual() const { return true; } | |
| 535 virtual bool is_inline() const { return _if_hit->is_inline(); } | |
| 536 virtual bool is_deferred() const { return _if_hit->is_deferred(); } | |
| 537 | |
| 538 virtual JVMState* generate(JVMState* jvms); | |
| 539 }; | |
| 540 | |
| 541 | |
| 542 CallGenerator* CallGenerator::for_predicted_call(ciKlass* predicted_receiver, | |
| 543 CallGenerator* if_missed, | |
| 544 CallGenerator* if_hit, | |
| 545 float hit_prob) { | |
| 546 return new PredictedCallGenerator(predicted_receiver, if_missed, if_hit, hit_prob); | |
| 547 } | |
| 548 | |
| 549 | |
| 550 JVMState* PredictedCallGenerator::generate(JVMState* jvms) { | |
| 551 GraphKit kit(jvms); | |
| 552 PhaseGVN& gvn = kit.gvn(); | |
| 553 // We need an explicit receiver null_check before checking its type. | |
| 554 // We share a map with the caller, so his JVMS gets adjusted. | |
| 555 Node* receiver = kit.argument(0); | |
| 556 | |
| 557 CompileLog* log = kit.C->log(); | |
| 558 if (log != NULL) { | |
| 559 log->elem("predicted_call bci='%d' klass='%d'", | |
| 560 jvms->bci(), log->identify(_predicted_receiver)); | |
| 561 } | |
| 562 | |
| 563 receiver = kit.null_check_receiver(method()); | |
| 564 if (kit.stopped()) { | |
| 565 return kit.transfer_exceptions_into_jvms(); | |
| 566 } | |
| 567 | |
| 568 Node* exact_receiver = receiver; // will get updated in place... | |
| 569 Node* slow_ctl = kit.type_check_receiver(receiver, | |
| 570 _predicted_receiver, _hit_prob, | |
| 571 &exact_receiver); | |
| 572 | |
| 573 SafePointNode* slow_map = NULL; | |
| 574 JVMState* slow_jvms; | |
| 575 { PreserveJVMState pjvms(&kit); | |
| 576 kit.set_control(slow_ctl); | |
| 577 if (!kit.stopped()) { | |
| 578 slow_jvms = _if_missed->generate(kit.sync_jvms()); | |
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579 if (kit.failing()) |
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580 return NULL; // might happen because of NodeCountInliningCutoff |
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581 assert(slow_jvms != NULL, "must be"); |
| 0 | 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_call(Node* method_handle, JVMState* jvms, |
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688 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
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689 assert(callee->is_method_handle_invoke() || callee->is_method_handle_adapter(), "for_method_handle_call mismatch"); |
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690 CallGenerator* cg = CallGenerator::for_method_handle_inline(method_handle, jvms, caller, callee, profile); |
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691 if (cg != NULL) |
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692 return cg; |
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693 return CallGenerator::for_direct_call(callee); |
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694 } |
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695 |
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696 CallGenerator* CallGenerator::for_method_handle_inline(Node* method_handle, JVMState* jvms, |
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697 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
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698 if (method_handle->Opcode() == Op_ConP) { |
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699 const TypeOopPtr* oop_ptr = method_handle->bottom_type()->is_oopptr(); |
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700 ciObject* const_oop = oop_ptr->const_oop(); |
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701 ciMethodHandle* method_handle = const_oop->as_method_handle(); |
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702 |
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703 // Set the callee to have access to the class and signature in |
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704 // the MethodHandleCompiler. |
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705 method_handle->set_callee(callee); |
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706 method_handle->set_caller(caller); |
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707 method_handle->set_call_profile(profile); |
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708 |
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709 // Get an adapter for the MethodHandle. |
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710 ciMethod* target_method = method_handle->get_method_handle_adapter(); |
|
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|
711 if (target_method != NULL) { |
|
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|
712 CallGenerator* cg = Compile::current()->call_generator(target_method, -1, false, jvms, true, PROB_ALWAYS); |
|
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|
713 if (cg != NULL && cg->is_inline()) |
|
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|
714 return cg; |
|
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|
715 } |
|
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|
716 } else if (method_handle->Opcode() == Op_Phi && method_handle->req() == 3 && |
|
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|
717 method_handle->in(1)->Opcode() == Op_ConP && method_handle->in(2)->Opcode() == Op_ConP) { |
|
3905
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|
718 float prob = PROB_FAIR; |
|
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|
719 Node* meth_region = method_handle->in(0); |
|
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|
720 if (meth_region->is_Region() && |
|
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|
721 meth_region->in(1)->is_Proj() && meth_region->in(2)->is_Proj() && |
|
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|
722 meth_region->in(1)->in(0) == meth_region->in(2)->in(0) && |
|
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|
723 meth_region->in(1)->in(0)->is_If()) { |
|
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|
724 // If diamond, so grab the probability of the test to drive the inlining below |
|
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|
725 prob = meth_region->in(1)->in(0)->as_If()->_prob; |
|
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changeset
|
726 if (meth_region->in(1)->is_IfTrue()) { |
|
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changeset
|
727 prob = 1 - prob; |
|
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|
728 } |
|
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|
729 } |
|
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changeset
|
730 |
|
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changeset
|
731 // selectAlternative idiom merging two constant MethodHandles. |
|
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changeset
|
732 // Generate a guard so that each can be inlined. We might want to |
|
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changeset
|
733 // do more inputs at later point but this gets the most common |
|
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|
734 // case. |
|
4117
a04a201f0f5a
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changeset
|
735 CallGenerator* cg1 = for_method_handle_call(method_handle->in(1), jvms, caller, callee, profile.rescale(1.0 - prob)); |
|
a04a201f0f5a
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changeset
|
736 CallGenerator* cg2 = for_method_handle_call(method_handle->in(2), jvms, caller, callee, profile.rescale(prob)); |
|
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changeset
|
737 if (cg1 != NULL && cg2 != NULL) { |
|
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changeset
|
738 const TypeOopPtr* oop_ptr = method_handle->in(1)->bottom_type()->is_oopptr(); |
|
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|
739 ciObject* const_oop = oop_ptr->const_oop(); |
|
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|
740 ciMethodHandle* mh = const_oop->as_method_handle(); |
|
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|
741 return new PredictedDynamicCallGenerator(mh, cg2, cg1, prob); |
|
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|
742 } |
|
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changeset
|
743 } |
|
f918d6096e23
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|
744 return NULL; |
|
f918d6096e23
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changeset
|
745 } |
|
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|
746 |
|
4117
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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changeset
|
747 CallGenerator* CallGenerator::for_invokedynamic_call(JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
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changeset
|
748 assert(callee->is_method_handle_invoke() || callee->is_method_handle_adapter(), "for_invokedynamic_call mismatch"); |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
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changeset
|
749 // Get the CallSite object. |
|
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7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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changeset
|
750 ciBytecodeStream str(caller); |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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changeset
|
751 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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changeset
|
752 ciCallSite* call_site = str.get_call_site(); |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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changeset
|
753 CallGenerator* cg = CallGenerator::for_invokedynamic_inline(call_site, jvms, caller, callee, profile); |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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changeset
|
754 if (cg != NULL) |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
parents:
4062
diff
changeset
|
755 return cg; |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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diff
changeset
|
756 return CallGenerator::for_dynamic_call(callee); |
|
a04a201f0f5a
7108383: JSR 292: JRuby bench_define_method_methods.rb: assert(slow_jvms != NULL) failed: miss path must not
twisti
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4062
diff
changeset
|
757 } |
|
3752
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diff
changeset
|
758 |
|
3852
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changeset
|
759 CallGenerator* CallGenerator::for_invokedynamic_inline(ciCallSite* call_site, JVMState* jvms, |
|
fdb992d83a87
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twisti
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changeset
|
760 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
|
fdb992d83a87
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changeset
|
761 ciMethodHandle* method_handle = call_site->get_target(); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
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diff
changeset
|
762 |
|
fdb992d83a87
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twisti
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diff
changeset
|
763 // Set the callee to have access to the class and signature in the |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
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3752
diff
changeset
|
764 // MethodHandleCompiler. |
|
fdb992d83a87
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changeset
|
765 method_handle->set_callee(callee); |
|
fdb992d83a87
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changeset
|
766 method_handle->set_caller(caller); |
|
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changeset
|
767 method_handle->set_call_profile(profile); |
|
fdb992d83a87
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twisti
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changeset
|
768 |
|
fdb992d83a87
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diff
changeset
|
769 // Get an adapter for the MethodHandle. |
|
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changeset
|
770 ciMethod* target_method = method_handle->get_invokedynamic_adapter(); |
|
fdb992d83a87
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changeset
|
771 if (target_method != NULL) { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
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changeset
|
772 Compile *C = Compile::current(); |
|
3894
b27c72d69fd1
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changeset
|
773 CallGenerator* cg = C->call_generator(target_method, -1, false, jvms, true, PROB_ALWAYS); |
|
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changeset
|
774 if (cg != NULL && cg->is_inline()) { |
|
3852
fdb992d83a87
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diff
changeset
|
775 // Add a dependence for invalidation of the optimization. |
|
3901
aa67216400d3
7085404: JSR 292: VolatileCallSites should have push notification too
twisti
parents:
3900
diff
changeset
|
776 if (!call_site->is_constant_call_site()) { |
|
3894
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
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changeset
|
777 C->dependencies()->assert_call_site_target_value(call_site, method_handle); |
|
3852
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changeset
|
778 } |
|
3894
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7083184: JSR 292: don't store context class argument with call site dependencies
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parents:
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diff
changeset
|
779 return cg; |
|
3852
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changeset
|
780 } |
|
fdb992d83a87
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3752
diff
changeset
|
781 } |
|
fdb992d83a87
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twisti
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diff
changeset
|
782 return NULL; |
|
fdb992d83a87
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twisti
parents:
3752
diff
changeset
|
783 } |
|
fdb992d83a87
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3752
diff
changeset
|
784 |
|
fdb992d83a87
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twisti
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3752
diff
changeset
|
785 |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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1137
diff
changeset
|
786 JVMState* PredictedDynamicCallGenerator::generate(JVMState* jvms) { |
|
dd57230ba8fe
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twisti
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1137
diff
changeset
|
787 GraphKit kit(jvms); |
|
dd57230ba8fe
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changeset
|
788 PhaseGVN& gvn = kit.gvn(); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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diff
changeset
|
789 |
|
dd57230ba8fe
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twisti
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1137
diff
changeset
|
790 CompileLog* log = kit.C->log(); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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parents:
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diff
changeset
|
791 if (log != NULL) { |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
792 log->elem("predicted_dynamic_call bci='%d'", jvms->bci()); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
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1137
diff
changeset
|
793 } |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
794 |
|
dd57230ba8fe
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diff
changeset
|
795 const TypeOopPtr* predicted_mh_ptr = TypeOopPtr::make_from_constant(_predicted_method_handle, true); |
|
dd57230ba8fe
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changeset
|
796 Node* predicted_mh = kit.makecon(predicted_mh_ptr); |
|
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changeset
|
797 |
|
3752
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diff
changeset
|
798 Node* bol = NULL; |
|
f918d6096e23
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changeset
|
799 int bc = jvms->method()->java_code_at_bci(jvms->bci()); |
|
4062
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diff
changeset
|
800 if (bc != Bytecodes::_invokedynamic) { |
|
83d0b5cd1438
7087727: JSR 292: C2 crash if ScavengeRootsInCode=2 when "static final" MethodHandle constants are in use
twisti
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3905
diff
changeset
|
801 // This is the selectAlternative idiom for guardWithTest or |
|
83d0b5cd1438
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twisti
parents:
3905
diff
changeset
|
802 // similar idioms. |
|
3752
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diff
changeset
|
803 Node* receiver = kit.argument(0); |
|
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
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diff
changeset
|
804 |
|
f918d6096e23
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parents:
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diff
changeset
|
805 // Check if the MethodHandle is the expected one |
|
f918d6096e23
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diff
changeset
|
806 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(receiver, predicted_mh)); |
|
f918d6096e23
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diff
changeset
|
807 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
|
f918d6096e23
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diff
changeset
|
808 } else { |
|
f918d6096e23
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diff
changeset
|
809 // Get the constant pool cache from the caller class. |
|
f918d6096e23
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diff
changeset
|
810 ciMethod* caller_method = jvms->method(); |
|
f918d6096e23
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changeset
|
811 ciBytecodeStream str(caller_method); |
|
f918d6096e23
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diff
changeset
|
812 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
|
f918d6096e23
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changeset
|
813 ciCPCache* cpcache = str.get_cpcache(); |
|
f918d6096e23
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parents:
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diff
changeset
|
814 |
|
f918d6096e23
7050554: JSR 292 - need optimization for selectAlternative
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parents:
2443
diff
changeset
|
815 // Get the offset of the CallSite from the constant pool cache |
|
f918d6096e23
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parents:
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diff
changeset
|
816 // pointer. |
|
f918d6096e23
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parents:
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diff
changeset
|
817 int index = str.get_method_index(); |
|
f918d6096e23
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diff
changeset
|
818 size_t call_site_offset = cpcache->get_f1_offset(index); |
|
f918d6096e23
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diff
changeset
|
819 |
|
f918d6096e23
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diff
changeset
|
820 // Load the CallSite object from the constant pool cache. |
|
f918d6096e23
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diff
changeset
|
821 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
|
f918d6096e23
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changeset
|
822 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
|
f918d6096e23
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diff
changeset
|
823 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
|
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824 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
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825 |
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826 // Load the target MethodHandle from the CallSite object. |
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827 Node* target_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
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828 Node* target_mh = kit.make_load(kit.control(), target_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
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829 |
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830 // Check if the MethodHandle is still the same. |
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831 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(target_mh, predicted_mh)); |
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832 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
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833 } |
|
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834 IfNode* iff = kit.create_and_xform_if(kit.control(), bol, _hit_prob, COUNT_UNKNOWN); |
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835 kit.set_control( gvn.transform(new(kit.C, 1) IfTrueNode (iff))); |
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836 Node* slow_ctl = gvn.transform(new(kit.C, 1) IfFalseNode(iff)); |
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837 |
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838 SafePointNode* slow_map = NULL; |
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839 JVMState* slow_jvms; |
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840 { PreserveJVMState pjvms(&kit); |
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841 kit.set_control(slow_ctl); |
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842 if (!kit.stopped()) { |
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843 slow_jvms = _if_missed->generate(kit.sync_jvms()); |
|
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844 if (kit.failing()) |
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845 return NULL; // might happen because of NodeCountInliningCutoff |
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846 assert(slow_jvms != NULL, "must be"); |
|
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847 kit.add_exception_states_from(slow_jvms); |
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848 kit.set_map(slow_jvms->map()); |
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849 if (!kit.stopped()) |
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850 slow_map = kit.stop(); |
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851 } |
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852 } |
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853 |
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854 if (kit.stopped()) { |
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855 // Instance exactly does not matches the desired type. |
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856 kit.set_jvms(slow_jvms); |
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857 return kit.transfer_exceptions_into_jvms(); |
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858 } |
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859 |
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860 // Make the hot call: |
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861 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); |
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862 if (new_jvms == NULL) { |
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863 // Inline failed, so make a direct call. |
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864 assert(_if_hit->is_inline(), "must have been a failed inline"); |
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865 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); |
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866 new_jvms = cg->generate(kit.sync_jvms()); |
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867 } |
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868 kit.add_exception_states_from(new_jvms); |
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869 kit.set_jvms(new_jvms); |
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870 |
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871 // Need to merge slow and fast? |
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872 if (slow_map == NULL) { |
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873 // The fast path is the only path remaining. |
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874 return kit.transfer_exceptions_into_jvms(); |
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875 } |
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876 |
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877 if (kit.stopped()) { |
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878 // Inlined method threw an exception, so it's just the slow path after all. |
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879 kit.set_jvms(slow_jvms); |
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880 return kit.transfer_exceptions_into_jvms(); |
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881 } |
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882 |
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883 // Finish the diamond. |
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884 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization |
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885 RegionNode* region = new (kit.C, 3) RegionNode(3); |
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886 region->init_req(1, kit.control()); |
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887 region->init_req(2, slow_map->control()); |
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888 kit.set_control(gvn.transform(region)); |
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889 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); |
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890 iophi->set_req(2, slow_map->i_o()); |
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891 kit.set_i_o(gvn.transform(iophi)); |
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892 kit.merge_memory(slow_map->merged_memory(), region, 2); |
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893 uint tos = kit.jvms()->stkoff() + kit.sp(); |
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894 uint limit = slow_map->req(); |
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895 for (uint i = TypeFunc::Parms; i < limit; i++) { |
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896 // Skip unused stack slots; fast forward to monoff(); |
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897 if (i == tos) { |
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898 i = kit.jvms()->monoff(); |
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899 if( i >= limit ) break; |
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900 } |
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901 Node* m = kit.map()->in(i); |
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902 Node* n = slow_map->in(i); |
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903 if (m != n) { |
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904 const Type* t = gvn.type(m)->meet(gvn.type(n)); |
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905 Node* phi = PhiNode::make(region, m, t); |
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906 phi->set_req(2, n); |
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907 kit.map()->set_req(i, gvn.transform(phi)); |
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908 } |
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909 } |
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910 return kit.transfer_exceptions_into_jvms(); |
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911 } |
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912 |
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913 |
| 0 | 914 //-------------------------UncommonTrapCallGenerator----------------------------- |
| 915 // Internal class which handles all out-of-line calls checking receiver type. | |
| 916 class UncommonTrapCallGenerator : public CallGenerator { | |
| 917 Deoptimization::DeoptReason _reason; | |
| 918 Deoptimization::DeoptAction _action; | |
| 919 | |
| 920 public: | |
| 921 UncommonTrapCallGenerator(ciMethod* m, | |
| 922 Deoptimization::DeoptReason reason, | |
| 923 Deoptimization::DeoptAction action) | |
| 924 : CallGenerator(m) | |
| 925 { | |
| 926 _reason = reason; | |
| 927 _action = action; | |
| 928 } | |
| 929 | |
| 930 virtual bool is_virtual() const { ShouldNotReachHere(); return false; } | |
| 931 virtual bool is_trap() const { return true; } | |
| 932 | |
| 933 virtual JVMState* generate(JVMState* jvms); | |
| 934 }; | |
| 935 | |
| 936 | |
| 937 CallGenerator* | |
| 938 CallGenerator::for_uncommon_trap(ciMethod* m, | |
| 939 Deoptimization::DeoptReason reason, | |
| 940 Deoptimization::DeoptAction action) { | |
| 941 return new UncommonTrapCallGenerator(m, reason, action); | |
| 942 } | |
| 943 | |
| 944 | |
| 945 JVMState* UncommonTrapCallGenerator::generate(JVMState* jvms) { | |
| 946 GraphKit kit(jvms); | |
| 947 // Take the trap with arguments pushed on the stack. (Cf. null_check_receiver). | |
| 948 int nargs = method()->arg_size(); | |
| 949 kit.inc_sp(nargs); | |
| 950 assert(nargs <= kit.sp() && kit.sp() <= jvms->stk_size(), "sane sp w/ args pushed"); | |
| 951 if (_reason == Deoptimization::Reason_class_check && | |
| 952 _action == Deoptimization::Action_maybe_recompile) { | |
| 953 // Temp fix for 6529811 | |
| 954 // Don't allow uncommon_trap to override our decision to recompile in the event | |
| 955 // of a class cast failure for a monomorphic call as it will never let us convert | |
| 956 // the call to either bi-morphic or megamorphic and can lead to unc-trap loops | |
| 957 bool keep_exact_action = true; | |
| 958 kit.uncommon_trap(_reason, _action, NULL, "monomorphic vcall checkcast", false, keep_exact_action); | |
| 959 } else { | |
| 960 kit.uncommon_trap(_reason, _action); | |
| 961 } | |
| 962 return kit.transfer_exceptions_into_jvms(); | |
| 963 } | |
| 964 | |
| 965 // (Note: Moved hook_up_call to GraphKit::set_edges_for_java_call.) | |
| 966 | |
| 967 // (Node: Merged hook_up_exits into ParseGenerator::generate.) | |
| 968 | |
| 969 #define NODES_OVERHEAD_PER_METHOD (30.0) | |
| 970 #define NODES_PER_BYTECODE (9.5) | |
| 971 | |
| 972 void WarmCallInfo::init(JVMState* call_site, ciMethod* call_method, ciCallProfile& profile, float prof_factor) { | |
| 973 int call_count = profile.count(); | |
| 974 int code_size = call_method->code_size(); | |
| 975 | |
| 976 // Expected execution count is based on the historical count: | |
| 977 _count = call_count < 0 ? 1 : call_site->method()->scale_count(call_count, prof_factor); | |
| 978 | |
| 979 // Expected profit from inlining, in units of simple call-overheads. | |
| 980 _profit = 1.0; | |
| 981 | |
| 982 // Expected work performed by the call in units of call-overheads. | |
| 983 // %%% need an empirical curve fit for "work" (time in call) | |
| 984 float bytecodes_per_call = 3; | |
| 985 _work = 1.0 + code_size / bytecodes_per_call; | |
| 986 | |
| 987 // Expected size of compilation graph: | |
| 988 // -XX:+PrintParseStatistics once reported: | |
| 989 // Methods seen: 9184 Methods parsed: 9184 Nodes created: 1582391 | |
| 990 // Histogram of 144298 parsed bytecodes: | |
| 991 // %%% Need an better predictor for graph size. | |
| 992 _size = NODES_OVERHEAD_PER_METHOD + (NODES_PER_BYTECODE * code_size); | |
| 993 } | |
| 994 | |
| 995 // is_cold: Return true if the node should never be inlined. | |
| 996 // This is true if any of the key metrics are extreme. | |
| 997 bool WarmCallInfo::is_cold() const { | |
| 998 if (count() < WarmCallMinCount) return true; | |
| 999 if (profit() < WarmCallMinProfit) return true; | |
| 1000 if (work() > WarmCallMaxWork) return true; | |
| 1001 if (size() > WarmCallMaxSize) return true; | |
| 1002 return false; | |
| 1003 } | |
| 1004 | |
| 1005 // is_hot: Return true if the node should be inlined immediately. | |
| 1006 // This is true if any of the key metrics are extreme. | |
| 1007 bool WarmCallInfo::is_hot() const { | |
| 1008 assert(!is_cold(), "eliminate is_cold cases before testing is_hot"); | |
| 1009 if (count() >= HotCallCountThreshold) return true; | |
| 1010 if (profit() >= HotCallProfitThreshold) return true; | |
| 1011 if (work() <= HotCallTrivialWork) return true; | |
| 1012 if (size() <= HotCallTrivialSize) return true; | |
| 1013 return false; | |
| 1014 } | |
| 1015 | |
| 1016 // compute_heat: | |
| 1017 float WarmCallInfo::compute_heat() const { | |
| 1018 assert(!is_cold(), "compute heat only on warm nodes"); | |
| 1019 assert(!is_hot(), "compute heat only on warm nodes"); | |
| 1020 int min_size = MAX2(0, (int)HotCallTrivialSize); | |
| 1021 int max_size = MIN2(500, (int)WarmCallMaxSize); | |
| 1022 float method_size = (size() - min_size) / MAX2(1, max_size - min_size); | |
| 1023 float size_factor; | |
| 1024 if (method_size < 0.05) size_factor = 4; // 2 sigmas better than avg. | |
| 1025 else if (method_size < 0.15) size_factor = 2; // 1 sigma better than avg. | |
| 1026 else if (method_size < 0.5) size_factor = 1; // better than avg. | |
| 1027 else size_factor = 0.5; // worse than avg. | |
| 1028 return (count() * profit() * size_factor); | |
| 1029 } | |
| 1030 | |
| 1031 bool WarmCallInfo::warmer_than(WarmCallInfo* that) { | |
| 1032 assert(this != that, "compare only different WCIs"); | |
| 1033 assert(this->heat() != 0 && that->heat() != 0, "call compute_heat 1st"); | |
| 1034 if (this->heat() > that->heat()) return true; | |
| 1035 if (this->heat() < that->heat()) return false; | |
| 1036 assert(this->heat() == that->heat(), "no NaN heat allowed"); | |
| 1037 // Equal heat. Break the tie some other way. | |
| 1038 if (!this->call() || !that->call()) return (address)this > (address)that; | |
| 1039 return this->call()->_idx > that->call()->_idx; | |
| 1040 } | |
| 1041 | |
| 1042 //#define UNINIT_NEXT ((WarmCallInfo*)badAddress) | |
| 1043 #define UNINIT_NEXT ((WarmCallInfo*)NULL) | |
| 1044 | |
| 1045 WarmCallInfo* WarmCallInfo::insert_into(WarmCallInfo* head) { | |
| 1046 assert(next() == UNINIT_NEXT, "not yet on any list"); | |
| 1047 WarmCallInfo* prev_p = NULL; | |
| 1048 WarmCallInfo* next_p = head; | |
| 1049 while (next_p != NULL && next_p->warmer_than(this)) { | |
| 1050 prev_p = next_p; | |
| 1051 next_p = prev_p->next(); | |
| 1052 } | |
| 1053 // Install this between prev_p and next_p. | |
| 1054 this->set_next(next_p); | |
| 1055 if (prev_p == NULL) | |
| 1056 head = this; | |
| 1057 else | |
| 1058 prev_p->set_next(this); | |
| 1059 return head; | |
| 1060 } | |
| 1061 | |
| 1062 WarmCallInfo* WarmCallInfo::remove_from(WarmCallInfo* head) { | |
| 1063 WarmCallInfo* prev_p = NULL; | |
| 1064 WarmCallInfo* next_p = head; | |
| 1065 while (next_p != this) { | |
| 1066 assert(next_p != NULL, "this must be in the list somewhere"); | |
| 1067 prev_p = next_p; | |
| 1068 next_p = prev_p->next(); | |
| 1069 } | |
| 1070 next_p = this->next(); | |
| 1071 debug_only(this->set_next(UNINIT_NEXT)); | |
| 1072 // Remove this from between prev_p and next_p. | |
| 1073 if (prev_p == NULL) | |
| 1074 head = next_p; | |
| 1075 else | |
| 1076 prev_p->set_next(next_p); | |
| 1077 return head; | |
| 1078 } | |
| 1079 | |
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1080 WarmCallInfo WarmCallInfo::_always_hot(WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE(), |
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1081 WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE()); |
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1082 WarmCallInfo WarmCallInfo::_always_cold(WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE(), |
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1083 WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE()); |
| 0 | 1084 |
| 1085 WarmCallInfo* WarmCallInfo::always_hot() { | |
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1086 assert(_always_hot.is_hot(), "must always be hot"); |
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1087 return &_always_hot; |
| 0 | 1088 } |
| 1089 | |
| 1090 WarmCallInfo* WarmCallInfo::always_cold() { | |
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1091 assert(_always_cold.is_cold(), "must always be cold"); |
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1092 return &_always_cold; |
| 0 | 1093 } |
| 1094 | |
| 1095 | |
| 1096 #ifndef PRODUCT | |
| 1097 | |
| 1098 void WarmCallInfo::print() const { | |
| 1099 tty->print("%s : C=%6.1f P=%6.1f W=%6.1f S=%6.1f H=%6.1f -> %p", | |
| 1100 is_cold() ? "cold" : is_hot() ? "hot " : "warm", | |
| 1101 count(), profit(), work(), size(), compute_heat(), next()); | |
| 1102 tty->cr(); | |
| 1103 if (call() != NULL) call()->dump(); | |
| 1104 } | |
| 1105 | |
| 1106 void print_wci(WarmCallInfo* ci) { | |
| 1107 ci->print(); | |
| 1108 } | |
| 1109 | |
| 1110 void WarmCallInfo::print_all() const { | |
| 1111 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
| 1112 p->print(); | |
| 1113 } | |
| 1114 | |
| 1115 int WarmCallInfo::count_all() const { | |
| 1116 int cnt = 0; | |
| 1117 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
| 1118 cnt++; | |
| 1119 return cnt; | |
| 1120 } | |
| 1121 | |
| 1122 #endif //PRODUCT |