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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 | |
| 28 #include "v8.h" | |
| 29 | |
| 30 #include "code-stubs.h" | |
| 31 #include "hydrogen.h" | |
| 32 #include "lithium.h" | |
| 33 | |
| 34 namespace v8 { | |
| 35 namespace internal { | |
| 36 | |
| 37 | |
| 38 Handle<Code> HydrogenCodeStub::CodeFromGraph(HGraph* graph) { | |
| 39 graph->OrderBlocks(); | |
| 40 graph->AssignDominators(); | |
| 41 graph->CollectPhis(); | |
| 42 graph->InsertRepresentationChanges(); | |
| 43 graph->EliminateRedundantBoundsChecks(); | |
| 44 LChunk* chunk = LChunk::NewChunk(graph); | |
| 45 ASSERT(chunk != NULL); | |
| 46 Handle<Code> stub = chunk->Codegen(Code::COMPILED_STUB); | |
| 47 return stub; | |
| 48 } | |
| 49 | |
| 50 | |
| 51 class CodeStubGraphBuilderBase : public HGraphBuilder { | |
| 52 public: | |
| 53 CodeStubGraphBuilderBase(Isolate* isolate, HydrogenCodeStub* stub) | |
| 54 : HGraphBuilder(&info_), info_(stub, isolate) {} | |
| 55 virtual bool BuildGraph(); | |
| 56 | |
| 57 protected: | |
| 58 virtual void BuildCodeStub() = 0; | |
| 59 HParameter* GetParameter(int parameter) { return parameters_[parameter]; } | |
| 60 HydrogenCodeStub* stub() { return info_.code_stub(); } | |
| 61 | |
| 62 private: | |
| 63 SmartArrayPointer<HParameter*> parameters_; | |
| 64 CompilationInfoWithZone info_; | |
| 65 }; | |
| 66 | |
| 67 | |
| 68 bool CodeStubGraphBuilderBase::BuildGraph() { | |
| 69 if (FLAG_trace_hydrogen) { | |
| 70 PrintF("-----------------------------------------------------------\n"); | |
| 71 PrintF("Compiling stub using hydrogen\n"); | |
| 72 HTracer::Instance()->TraceCompilation(&info_); | |
| 73 } | |
| 74 HBasicBlock* next_block = graph()->CreateBasicBlock(); | |
| 75 next_block->SetInitialEnvironment(graph()->start_environment()); | |
| 76 HGoto* jump = new(zone()) HGoto(next_block); | |
| 77 graph()->entry_block()->Finish(jump); | |
| 78 set_current_block(next_block); | |
| 79 | |
| 80 int major_key = stub()->MajorKey(); | |
| 81 CodeStubInterfaceDescriptor* descriptor = | |
| 82 info_.isolate()->code_stub_interface_descriptor(major_key); | |
| 83 if (descriptor->register_param_count_ < 0) { | |
| 84 stub()->InitializeInterfaceDescriptor(info_.isolate(), descriptor); | |
| 85 } | |
| 86 parameters_.Reset(new HParameter*[descriptor->register_param_count_]); | |
| 87 | |
| 88 HGraph* graph = this->graph(); | |
| 89 Zone* zone = this->zone(); | |
| 90 for (int i = 0; i < descriptor->register_param_count_; ++i) { | |
| 91 HParameter* param = new(zone) HParameter(i); | |
| 92 AddInstruction(param); | |
| 93 graph->start_environment()->Push(param); | |
| 94 parameters_[i] = param; | |
| 95 } | |
| 96 AddSimulate(BailoutId::StubEntry()); | |
| 97 | |
| 98 BuildCodeStub(); | |
| 99 | |
| 100 return true; | |
| 101 } | |
| 102 | |
| 103 template <class Stub> | |
| 104 class CodeStubGraphBuilder: public CodeStubGraphBuilderBase { | |
| 105 public: | |
| 106 explicit CodeStubGraphBuilder(Stub* stub) | |
| 107 : CodeStubGraphBuilderBase(Isolate::Current(), stub) {} | |
| 108 | |
| 109 protected: | |
| 110 virtual void BuildCodeStub(); | |
| 111 Stub* casted_stub() { return static_cast<Stub*>(stub()); } | |
| 112 }; | |
| 113 | |
| 114 | |
| 115 template <> | |
| 116 void CodeStubGraphBuilder<KeyedLoadFastElementStub>::BuildCodeStub() { | |
| 117 Zone* zone = this->zone(); | |
| 118 | |
| 119 HInstruction* load = BuildUncheckedMonomorphicElementAccess( | |
| 120 GetParameter(0), GetParameter(1), NULL, NULL, | |
| 121 casted_stub()->is_js_array(), casted_stub()->elements_kind(), false); | |
| 122 AddInstruction(load); | |
| 123 | |
| 124 HReturn* ret = new(zone) HReturn(load); | |
| 125 current_block()->Finish(ret); | |
| 126 } | |
| 127 | |
| 128 | |
| 129 Handle<Code> KeyedLoadFastElementStub::GenerateCode() { | |
| 130 CodeStubGraphBuilder<KeyedLoadFastElementStub> builder(this); | |
| 131 return CodeFromGraph(builder.CreateGraph()); | |
| 132 } | |
| 133 | |
| 134 | |
| 135 } } // namespace v8::internal | |
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Chromium Code Reviews
Issue 11498006:
Revert 13157, 13145 and 13140: Crankshaft code stubs. (Closed)
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge