1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit/arm/Lowering-arm.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,105 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef jit_arm_Lowering_arm_h
1.11 +#define jit_arm_Lowering_arm_h
1.12 +
1.13 +#include "jit/shared/Lowering-shared.h"
1.14 +
1.15 +namespace js {
1.16 +namespace jit {
1.17 +
1.18 +class LIRGeneratorARM : public LIRGeneratorShared
1.19 +{
1.20 + public:
1.21 + LIRGeneratorARM(MIRGenerator *gen, MIRGraph &graph, LIRGraph &lirGraph)
1.22 + : LIRGeneratorShared(gen, graph, lirGraph)
1.23 + { }
1.24 +
1.25 + protected:
1.26 + // Adds a box input to an instruction, setting operand |n| to the type and
1.27 + // |n+1| to the payload.
1.28 + bool useBox(LInstruction *lir, size_t n, MDefinition *mir,
1.29 + LUse::Policy policy = LUse::REGISTER, bool useAtStart = false);
1.30 + bool useBoxFixed(LInstruction *lir, size_t n, MDefinition *mir, Register reg1, Register reg2);
1.31 +
1.32 + // x86 has constraints on what registers can be formatted for 1-byte
1.33 + // stores and loads; on ARM all registers are okay.
1.34 + LAllocation useByteOpRegister(MDefinition *mir);
1.35 + LAllocation useByteOpRegisterOrNonDoubleConstant(MDefinition *mir);
1.36 +
1.37 + inline LDefinition tempToUnbox() {
1.38 + return LDefinition::BogusTemp();
1.39 + }
1.40 +
1.41 + bool needTempForPostBarrier() { return false; }
1.42 +
1.43 + // x64 has a scratch register, so no need for another temp for dispatch
1.44 + // ICs.
1.45 + LDefinition tempForDispatchCache(MIRType outputType = MIRType_None) {
1.46 + return LDefinition::BogusTemp();
1.47 + }
1.48 +
1.49 + void lowerUntypedPhiInput(MPhi *phi, uint32_t inputPosition, LBlock *block, size_t lirIndex);
1.50 + bool defineUntypedPhi(MPhi *phi, size_t lirIndex);
1.51 + bool lowerForShift(LInstructionHelper<1, 2, 0> *ins, MDefinition *mir, MDefinition *lhs,
1.52 + MDefinition *rhs);
1.53 + bool lowerUrshD(MUrsh *mir);
1.54 +
1.55 + bool lowerForALU(LInstructionHelper<1, 1, 0> *ins, MDefinition *mir,
1.56 + MDefinition *input);
1.57 + bool lowerForALU(LInstructionHelper<1, 2, 0> *ins, MDefinition *mir,
1.58 + MDefinition *lhs, MDefinition *rhs);
1.59 +
1.60 + bool lowerForFPU(LInstructionHelper<1, 1, 0> *ins, MDefinition *mir,
1.61 + MDefinition *src);
1.62 + bool lowerForFPU(LInstructionHelper<1, 2, 0> *ins, MDefinition *mir,
1.63 + MDefinition *lhs, MDefinition *rhs);
1.64 + bool lowerForBitAndAndBranch(LBitAndAndBranch *baab, MInstruction *mir,
1.65 + MDefinition *lhs, MDefinition *rhs);
1.66 + bool lowerConstantDouble(double d, MInstruction *ins);
1.67 + bool lowerConstantFloat32(float d, MInstruction *ins);
1.68 + bool lowerTruncateDToInt32(MTruncateToInt32 *ins);
1.69 + bool lowerTruncateFToInt32(MTruncateToInt32 *ins);
1.70 + bool lowerDivI(MDiv *div);
1.71 + bool lowerModI(MMod *mod);
1.72 + bool lowerMulI(MMul *mul, MDefinition *lhs, MDefinition *rhs);
1.73 + bool lowerUDiv(MDiv *div);
1.74 + bool lowerUMod(MMod *mod);
1.75 + bool visitPowHalf(MPowHalf *ins);
1.76 + bool visitAsmJSNeg(MAsmJSNeg *ins);
1.77 +
1.78 + LTableSwitch *newLTableSwitch(const LAllocation &in, const LDefinition &inputCopy,
1.79 + MTableSwitch *ins);
1.80 + LTableSwitchV *newLTableSwitchV(MTableSwitch *ins);
1.81 +
1.82 + public:
1.83 + bool visitConstant(MConstant *ins);
1.84 + bool visitBox(MBox *box);
1.85 + bool visitUnbox(MUnbox *unbox);
1.86 + bool visitReturn(MReturn *ret);
1.87 + bool lowerPhi(MPhi *phi);
1.88 + bool visitGuardShape(MGuardShape *ins);
1.89 + bool visitGuardObjectType(MGuardObjectType *ins);
1.90 + bool visitAsmJSUnsignedToDouble(MAsmJSUnsignedToDouble *ins);
1.91 + bool visitAsmJSUnsignedToFloat32(MAsmJSUnsignedToFloat32 *ins);
1.92 + bool visitAsmJSLoadHeap(MAsmJSLoadHeap *ins);
1.93 + bool visitAsmJSStoreHeap(MAsmJSStoreHeap *ins);
1.94 + bool visitAsmJSLoadFuncPtr(MAsmJSLoadFuncPtr *ins);
1.95 + bool visitStoreTypedArrayElementStatic(MStoreTypedArrayElementStatic *ins);
1.96 + bool visitForkJoinGetSlice(MForkJoinGetSlice *ins);
1.97 +
1.98 + static bool allowFloat32Optimizations() {
1.99 + return true;
1.100 + }
1.101 +};
1.102 +
1.103 +typedef LIRGeneratorARM LIRGeneratorSpecific;
1.104 +
1.105 +} // namespace jit
1.106 +} // namespace js
1.107 +
1.108 +#endif /* jit_arm_Lowering_arm_h */
