js/src/jit/mips64/CodeGenerator-mips64.h
author Heiher <r@hev.cc>
Thu, 21 Jul 2016 09:23:57 +0800
changeset 331038 301e457cab3f3c6081b55200b13c9bd80657c866
parent 316230 4d0c1dd4e37acb2bdcda96f171f97a470d733f7b
child 343969 b4224b9255c697d402ebe30998ae973230458496
permissions -rw-r--r--
Bug 1287349 - wasm: MIPS64: Implement LoadI64 in Codegen. r=bbouvier --- js/src/jit/mips64/CodeGenerator-mips64.cpp | 29 +++++++++++++++++++++++++++++ js/src/jit/mips64/CodeGenerator-mips64.h | 1 + 2 files changed, 30 insertions(+)

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99:
 * 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_mips64_CodeGenerator_mips64_h
#define jit_mips64_CodeGenerator_mips64_h

#include "jit/mips-shared/CodeGenerator-mips-shared.h"

namespace js {
namespace jit {

class CodeGeneratorMIPS64 : public CodeGeneratorMIPSShared
{
  protected:
    void testNullEmitBranch(Assembler::Condition cond, const ValueOperand& value,
                            MBasicBlock* ifTrue, MBasicBlock* ifFalse)
    {
        MOZ_ASSERT(value.valueReg() != SecondScratchReg);
        masm.splitTag(value.valueReg(), SecondScratchReg);
        emitBranch(SecondScratchReg, ImmTag(JSVAL_TAG_NULL), cond, ifTrue, ifFalse);
    }
    void testUndefinedEmitBranch(Assembler::Condition cond, const ValueOperand& value,
                                 MBasicBlock* ifTrue, MBasicBlock* ifFalse)
    {
        MOZ_ASSERT(value.valueReg() != SecondScratchReg);
        masm.splitTag(value.valueReg(), SecondScratchReg);
        emitBranch(SecondScratchReg, ImmTag(JSVAL_TAG_UNDEFINED), cond, ifTrue, ifFalse);
    }
    void testObjectEmitBranch(Assembler::Condition cond, const ValueOperand& value,
                              MBasicBlock* ifTrue, MBasicBlock* ifFalse)
    {
        MOZ_ASSERT(value.valueReg() != SecondScratchReg);
        masm.splitTag(value.valueReg(), SecondScratchReg);
        emitBranch(SecondScratchReg, ImmTag(JSVAL_TAG_OBJECT), cond, ifTrue, ifFalse);
    }

    void emitTableSwitchDispatch(MTableSwitch* mir, Register index, Register base);

  public:
    void visitCompareB(LCompareB* lir);
    void visitCompareBAndBranch(LCompareBAndBranch* lir);
    void visitCompareBitwise(LCompareBitwise* lir);
    void visitCompareBitwiseAndBranch(LCompareBitwiseAndBranch* lir);
    void visitWasmLoadI64(LWasmLoadI64* lir);
    void visitAsmSelectI64(LAsmSelectI64* ins);
    void visitAsmReinterpretFromI64(LAsmReinterpretFromI64* lir);
    void visitAsmReinterpretToI64(LAsmReinterpretToI64* lir);

    // Out of line visitors.
    void visitOutOfLineBailout(OutOfLineBailout* ool);
    void visitOutOfLineTableSwitch(OutOfLineTableSwitch* ool);
  protected:
    ValueOperand ToValue(LInstruction* ins, size_t pos);
    ValueOperand ToOutValue(LInstruction* ins);
    ValueOperand ToTempValue(LInstruction* ins, size_t pos);

    // Functions for LTestVAndBranch.
    Register splitTagForTest(const ValueOperand& value);

  public:
    CodeGeneratorMIPS64(MIRGenerator* gen, LIRGraph* graph, MacroAssembler* masm)
      : CodeGeneratorMIPSShared(gen, graph, masm)
    { }

  public:
    void visitBox(LBox* box);
    void visitUnbox(LUnbox* unbox);

    void setReturnDoubleRegs(LiveRegisterSet* regs);
};

typedef CodeGeneratorMIPS64 CodeGeneratorSpecific;

} // namespace jit
} // namespace js

#endif /* jit_mips64_CodeGenerator_mips64_h */