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Bug 910796 - IonMonkey: Micro-optimize testNegativeZero on x64. r=sstangl

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This commit is contained in:
Dan Gohman 2013-08-31 07:29:41 -07:00
parent f2d154d5d0
commit df18f98828
1 changed files with 1 additions and 1 deletions
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2
js/src/jit/x64/MacroAssembler-x64.cpp
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@ -314,6 +314,6 @@ Assembler::Condition
MacroAssemblerX64::testNegativeZero(const FloatRegister &reg, const Register &scratch)
{
movq(reg, scratch);
subq(Imm32(1), scratch);
cmpq(scratch, Imm32(1));
return Overflow;
}