/* -*- 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/. */

#include "jit/BaselineCompiler.h"
#include "jit/BaselineIC.h"
#include "jit/BaselineJIT.h"
#include "jit/Linker.h"
#include "jit/SharedICHelpers.h"

#include "jit/MacroAssembler-inl.h"

using namespace js;
using namespace js::jit;

namespace js {
namespace jit {

// ICCompare_Int32

bool ICCompare_Int32::Compiler::generateStubCode(MacroAssembler& masm) {
  // Guard that R0 is an integer and R1 is an integer.
  Label failure;
  masm.branchTestInt32(Assembler::NotEqual, R0, &failure);
  masm.branchTestInt32(Assembler::NotEqual, R1, &failure);

  // Compare payload regs of R0 and R1.
  Assembler::Condition cond = JSOpToCondition(op, /* signed = */ true);
  masm.cmp32(R0.payloadReg(), R1.payloadReg());
  masm.ma_mov(Imm32(1), R0.payloadReg(), cond);
  masm.ma_mov(Imm32(0), R0.payloadReg(), Assembler::InvertCondition(cond));

  // Result is implicitly boxed already.
  masm.tagValue(JSVAL_TYPE_BOOLEAN, R0.payloadReg(), R0);
  EmitReturnFromIC(masm);

  // Failure case - jump to next stub.
  masm.bind(&failure);
  EmitStubGuardFailure(masm);

  return true;
}

bool ICCompare_Double::Compiler::generateStubCode(MacroAssembler& masm) {
  Label failure, isNaN;
  masm.ensureDouble(R0, FloatReg0, &failure);
  masm.ensureDouble(R1, FloatReg1, &failure);

  Register dest = R0.scratchReg();

  Assembler::DoubleCondition doubleCond = JSOpToDoubleCondition(op);
  Assembler::Condition cond =
      Assembler::ConditionFromDoubleCondition(doubleCond);

  masm.compareDouble(FloatReg0, FloatReg1);
  masm.ma_mov(Imm32(0), dest);
  masm.ma_mov(Imm32(1), dest, cond);

  masm.tagValue(JSVAL_TYPE_BOOLEAN, dest, R0);
  EmitReturnFromIC(masm);

  // Failure case - jump to next stub.
  masm.bind(&failure);
  EmitStubGuardFailure(masm);
  return true;
}

}  // namespace jit
}  // namespace js
