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comparison: js/src/jit/x64/Lowering-x64.h
js/src/jit/x64/Lowering-x64.h
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef jit_x64_Lowering_x64_h | |
| 8 #define jit_x64_Lowering_x64_h | |
| 9 | |
| 10 #include "jit/shared/Lowering-x86-shared.h" | |
| 11 | |
| 12 namespace js { | |
| 13 namespace jit { | |
| 14 | |
| 15 class LIRGeneratorX64 : public LIRGeneratorX86Shared | |
| 16 { | |
| 17 public: | |
| 18 LIRGeneratorX64(MIRGenerator *gen, MIRGraph &graph, LIRGraph &lirGraph) | |
| 19 : LIRGeneratorX86Shared(gen, graph, lirGraph) | |
| 20 { } | |
| 21 | |
| 22 protected: | |
| 23 void lowerUntypedPhiInput(MPhi *phi, uint32_t inputPosition, LBlock *block, size_t lirIndex); | |
| 24 bool defineUntypedPhi(MPhi *phi, size_t lirIndex); | |
| 25 | |
| 26 // Adds a use at operand |n| of a value-typed insturction. | |
| 27 bool useBox(LInstruction *lir, size_t n, MDefinition *mir, | |
| 28 LUse::Policy policy = LUse::REGISTER, bool useAtStart = false); | |
| 29 bool useBoxFixed(LInstruction *lir, size_t n, MDefinition *mir, Register reg1, Register); | |
| 30 | |
| 31 // x86 has constraints on what registers can be formatted for 1-byte | |
| 32 // stores and loads; on x64 all registers are okay. | |
| 33 LAllocation useByteOpRegister(MDefinition *mir); | |
| 34 LAllocation useByteOpRegisterOrNonDoubleConstant(MDefinition *mir); | |
| 35 | |
| 36 LDefinition tempToUnbox(); | |
| 37 | |
| 38 bool needTempForPostBarrier() { return false; } | |
| 39 | |
| 40 // x64 has a scratch register, so no need for another temp for dispatch | |
| 41 // ICs. | |
| 42 LDefinition tempForDispatchCache(MIRType outputType = MIRType_None) { | |
| 43 return LDefinition::BogusTemp(); | |
| 44 } | |
| 45 | |
| 46 public: | |
| 47 bool visitBox(MBox *box); | |
| 48 bool visitUnbox(MUnbox *unbox); | |
| 49 bool visitReturn(MReturn *ret); | |
| 50 bool visitAsmJSUnsignedToDouble(MAsmJSUnsignedToDouble *ins); | |
| 51 bool visitAsmJSUnsignedToFloat32(MAsmJSUnsignedToFloat32 *ins); | |
| 52 bool visitAsmJSLoadHeap(MAsmJSLoadHeap *ins); | |
| 53 bool visitAsmJSStoreHeap(MAsmJSStoreHeap *ins); | |
| 54 bool visitAsmJSLoadFuncPtr(MAsmJSLoadFuncPtr *ins); | |
| 55 bool visitStoreTypedArrayElementStatic(MStoreTypedArrayElementStatic *ins); | |
| 56 | |
| 57 static bool allowFloat32Optimizations() { | |
| 58 return true; | |
| 59 } | |
| 60 | |
| 61 static bool allowInlineForkJoinGetSlice() { | |
| 62 return true; | |
| 63 } | |
| 64 }; | |
| 65 | |
| 66 typedef LIRGeneratorX64 LIRGeneratorSpecific; | |
| 67 | |
| 68 } // namespace jit | |
| 69 } // namespace js | |
| 70 | |
| 71 #endif /* jit_x64_Lowering_x64_h */ |
