Source code

Revision control

Copy as Markdown

Other Tools

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_Lowering_h
#define jit_Lowering_h
// This file declares the structures that are used for attaching LIR to a
// MIRGraph.
#include "jit/LIR.h"
#if defined(JS_CODEGEN_X86)
# include "jit/x86/Lowering-x86.h"
#elif defined(JS_CODEGEN_X64)
# include "jit/x64/Lowering-x64.h"
#elif defined(JS_CODEGEN_ARM)
# include "jit/arm/Lowering-arm.h"
#elif defined(JS_CODEGEN_ARM64)
# include "jit/arm64/Lowering-arm64.h"
#elif defined(JS_CODEGEN_MIPS32)
# include "jit/mips32/Lowering-mips32.h"
#elif defined(JS_CODEGEN_MIPS64)
# include "jit/mips64/Lowering-mips64.h"
#elif defined(JS_CODEGEN_LOONG64)
# include "jit/loong64/Lowering-loong64.h"
#elif defined(JS_CODEGEN_NONE)
# include "jit/none/Lowering-none.h"
#else
# error "Unknown architecture!"
#endif
namespace js {
namespace jit {
class LIRGenerator final : public LIRGeneratorSpecific {
void updateResumeState(MInstruction* ins);
void updateResumeState(MBasicBlock* block);
// The maximum depth, for framesizeclass determination.
uint32_t maxargslots_;
public:
LIRGenerator(MIRGenerator* gen, MIRGraph& graph, LIRGraph& lirGraph)
: LIRGeneratorSpecific(gen, graph, lirGraph), maxargslots_(0) {}
[[nodiscard]] bool generate();
private:
LBoxAllocation useBoxFixedAtStart(MDefinition* mir, Register reg1,
Register reg2) {
return useBoxFixed(mir, reg1, reg2, /* useAtStart = */ true);
}
LBoxAllocation useBoxFixedAtStart(MDefinition* mir, ValueOperand op);
LBoxAllocation useBoxAtStart(MDefinition* mir,
LUse::Policy policy = LUse::REGISTER);
void lowerBitOp(JSOp op, MBinaryInstruction* ins);
void lowerShiftOp(JSOp op, MShiftInstruction* ins);
LInstructionHelper<1, 1, 0>* allocateAbs(MAbs* ins, LAllocation input);
void definePhis();
[[nodiscard]] bool lowerCallArguments(MCall* call);
friend class LIRGeneratorShared;
void visitInstructionDispatch(MInstruction* ins);
void visitReturnImpl(MDefinition* def, bool isGenerator = false);
[[nodiscard]] bool visitInstruction(MInstruction* ins);
[[nodiscard]] bool visitBlock(MBasicBlock* block);
#define MIR_OP(op) void visit##op(M##op* ins);
MIR_OPCODE_LIST(MIR_OP)
#undef MIR_OP
template <class MWasmCallT>
void visitWasmCall(MWasmCallT ins);
};
} // namespace jit
} // namespace js
#endif /* jit_Lowering_h */