michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "jit/BaselineHelpers.h"
michael@0: #include "jit/BaselineIC.h"
michael@0: 
michael@0: using namespace js;
michael@0: using namespace js::jit;
michael@0: 
michael@0: bool
michael@0: ICCompare_Double::Compiler::generateStubCode(MacroAssembler &masm)
michael@0: {
michael@0:     Label failure, notNaN;
michael@0:     masm.ensureDouble(R0, FloatReg0, &failure);
michael@0:     masm.ensureDouble(R1, FloatReg1, &failure);
michael@0: 
michael@0:     Register dest = R0.scratchReg();
michael@0: 
michael@0:     Assembler::DoubleCondition cond = JSOpToDoubleCondition(op);
michael@0:     masm.mov(ImmWord(0), dest);
michael@0:     masm.compareDouble(cond, FloatReg0, FloatReg1);
michael@0:     masm.setCC(Assembler::ConditionFromDoubleCondition(cond), dest);
michael@0: 
michael@0:     // Check for NaN, if needed.
michael@0:     Assembler::NaNCond nanCond = Assembler::NaNCondFromDoubleCondition(cond);
michael@0:     if (nanCond != Assembler::NaN_HandledByCond) {
michael@0:       masm.j(Assembler::NoParity, &notNaN);
michael@0:       masm.mov(ImmWord(nanCond == Assembler::NaN_IsTrue), dest);
michael@0:       masm.bind(&notNaN);
michael@0:     }
michael@0: 
michael@0:     masm.tagValue(JSVAL_TYPE_BOOLEAN, dest, R0);
michael@0:     EmitReturnFromIC(masm);
michael@0: 
michael@0:     // Failure case - jump to next stub
michael@0:     masm.bind(&failure);
michael@0:     EmitStubGuardFailure(masm);
michael@0:     return true;
michael@0: }