Line data    Source code

       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/x86-shared/Lowering-x86-shared.h"
      11             : 
      12             : namespace js {
      13             : namespace jit {
      14             : 
      15             : class LIRGeneratorX64 : public LIRGeneratorX86Shared
      16             : {
      17             :   public:
      18           8 :     LIRGeneratorX64(MIRGenerator* gen, MIRGraph& graph, LIRGraph& lirGraph)
      19           8 :       : LIRGeneratorX86Shared(gen, graph, lirGraph)
      20           8 :     { }
      21             : 
      22             :   protected:
      23             :     void lowerUntypedPhiInput(MPhi* phi, uint32_t inputPosition, LBlock* block, size_t lirIndex);
      24             :     void defineUntypedPhi(MPhi* phi, size_t lirIndex);
      25             :     void lowerInt64PhiInput(MPhi* phi, uint32_t inputPosition, LBlock* block, size_t lirIndex);
      26             :     void defineInt64Phi(MPhi* phi, size_t lirIndex);
      27             : 
      28             :     void lowerForALUInt64(LInstructionHelper<INT64_PIECES, 2 * INT64_PIECES, 0>* ins,
      29             :                           MDefinition* mir, MDefinition* lhs, MDefinition* rhs);
      30             :     void lowerForMulInt64(LMulI64* ins, MMul* mir, MDefinition* lhs, MDefinition* rhs);
      31             : 
      32             :     // Returns a box allocation. reg2 is ignored on 64-bit platforms.
      33             :     LBoxAllocation useBoxFixed(MDefinition* mir, Register reg1, Register, bool useAtStart = false);
      34             : 
      35             :     // x86 has constraints on what registers can be formatted for 1-byte
      36             :     // stores and loads; on x64 all registers are okay.
      37             :     LAllocation useByteOpRegister(MDefinition* mir);
      38             :     LAllocation useByteOpRegisterAtStart(MDefinition* mir);
      39             :     LAllocation useByteOpRegisterOrNonDoubleConstant(MDefinition* mir);
      40             :     LDefinition tempByteOpRegister();
      41             : 
      42             :     LDefinition tempToUnbox();
      43             : 
      44           2 :     bool needTempForPostBarrier() { return true; }
      45             : 
      46             :     void lowerDivI64(MDiv* div);
      47             :     void lowerModI64(MMod* mod);
      48             :     void lowerUDivI64(MDiv* div);
      49             :     void lowerUModI64(MMod* mod);
      50             : 
      51             :   public:
      52             :     void visitBox(MBox* box);
      53             :     void visitUnbox(MUnbox* unbox);
      54             :     void visitReturn(MReturn* ret);
      55             :     void visitCompareExchangeTypedArrayElement(MCompareExchangeTypedArrayElement* ins);
      56             :     void visitAtomicExchangeTypedArrayElement(MAtomicExchangeTypedArrayElement* ins);
      57             :     void visitAtomicTypedArrayElementBinop(MAtomicTypedArrayElementBinop* ins);
      58             :     void visitWasmUnsignedToDouble(MWasmUnsignedToDouble* ins);
      59             :     void visitWasmUnsignedToFloat32(MWasmUnsignedToFloat32* ins);
      60             :     void visitAsmJSLoadHeap(MAsmJSLoadHeap* ins);
      61             :     void visitAsmJSStoreHeap(MAsmJSStoreHeap* ins);
      62             :     void visitAsmJSCompareExchangeHeap(MAsmJSCompareExchangeHeap* ins);
      63             :     void visitAsmJSAtomicExchangeHeap(MAsmJSAtomicExchangeHeap* ins);
      64             :     void visitAsmJSAtomicBinopHeap(MAsmJSAtomicBinopHeap* ins);
      65             :     void visitWasmLoad(MWasmLoad* ins);
      66             :     void visitWasmStore(MWasmStore* ins);
      67             :     void visitStoreTypedArrayElementStatic(MStoreTypedArrayElementStatic* ins);
      68             :     void visitSubstr(MSubstr* ins);
      69             :     void visitRandom(MRandom* ins);
      70             :     void visitWasmTruncateToInt64(MWasmTruncateToInt64* ins);
      71             :     void visitInt64ToFloatingPoint(MInt64ToFloatingPoint* ins);
      72             :     void visitExtendInt32ToInt64(MExtendInt32ToInt64* ins);
      73             : };
      74             : 
      75             : typedef LIRGeneratorX64 LIRGeneratorSpecific;
      76             : 
      77             : } // namespace jit
      78             : } // namespace js
      79             : 
      80             : #endif /* jit_x64_Lowering_x64_h */