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comparison: js/src/jit/shared/BaselineIC-x86-shared.cpp
js/src/jit/shared/BaselineIC-x86-shared.cpp
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "jit/BaselineHelpers.h" | |
| 8 #include "jit/BaselineIC.h" | |
| 9 | |
| 10 using namespace js; | |
| 11 using namespace js::jit; | |
| 12 | |
| 13 bool | |
| 14 ICCompare_Double::Compiler::generateStubCode(MacroAssembler &masm) | |
| 15 { | |
| 16 Label failure, notNaN; | |
| 17 masm.ensureDouble(R0, FloatReg0, &failure); | |
| 18 masm.ensureDouble(R1, FloatReg1, &failure); | |
| 19 | |
| 20 Register dest = R0.scratchReg(); | |
| 21 | |
| 22 Assembler::DoubleCondition cond = JSOpToDoubleCondition(op); | |
| 23 masm.mov(ImmWord(0), dest); | |
| 24 masm.compareDouble(cond, FloatReg0, FloatReg1); | |
| 25 masm.setCC(Assembler::ConditionFromDoubleCondition(cond), dest); | |
| 26 | |
| 27 // Check for NaN, if needed. | |
| 28 Assembler::NaNCond nanCond = Assembler::NaNCondFromDoubleCondition(cond); | |
| 29 if (nanCond != Assembler::NaN_HandledByCond) { | |
| 30 masm.j(Assembler::NoParity, ¬NaN); | |
| 31 masm.mov(ImmWord(nanCond == Assembler::NaN_IsTrue), dest); | |
| 32 masm.bind(¬NaN); | |
| 33 } | |
| 34 | |
| 35 masm.tagValue(JSVAL_TYPE_BOOLEAN, dest, R0); | |
| 36 EmitReturnFromIC(masm); | |
| 37 | |
| 38 // Failure case - jump to next stub | |
| 39 masm.bind(&failure); | |
| 40 EmitStubGuardFailure(masm); | |
| 41 return true; | |
| 42 } |
