src/ia32/lithium-codegen-ia32.cc - Issue 6368050: Fix Math.pow(-0, 0.5) and Math.pow(-0, -0.5). These are not equal to sqrt(-0...

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Unified Diff: src/ia32/lithium-codegen-ia32.cc

Issue 6368050: Fix Math.pow(-0, 0.5) and Math.pow(-0, -0.5). These are not equal to sqrt(-0... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/

Patch Set: '' Created 9 years, 11 months ago

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Index: src/ia32/lithium-codegen-ia32.cc

===================================================================

--- src/ia32/lithium-codegen-ia32.cc (revision 6572)

+++ src/ia32/lithium-codegen-ia32.cc (working copy)

@@ -2397,6 +2397,8 @@

__ movdbl(xmm_scratch, Operand::StaticVariable(negative_infinity));

__ ucomisd(xmm_scratch, input_reg);

DeoptimizeIf(equal, instr->environment());

+ __ xorpd(xmm_scratch, xmm_scratch);

+ __ addsd(input_reg, xmm_scratch); // Convert -0 to +0.

__ sqrtsd(input_reg, input_reg);

}

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