src/x64/lithium-codegen-x64.cc - Issue 12388015: Fix math.round with SSE4.1.

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Unified Diff: src/x64/lithium-codegen-x64.cc

Issue 12388015: Fix math.round with SSE4.1. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 7 years, 10 months ago

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Index: src/x64/lithium-codegen-x64.cc

diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc

index c6bbba068955aa1627c8ad25c24c738b2c3c0770..3722f1465939fa78d5933eeb9582871750031965 100644

--- a/src/x64/lithium-codegen-x64.cc

+++ b/src/x64/lithium-codegen-x64.cc

@@ -3543,7 +3543,7 @@ void LCodeGen::DoMathRound(LUnaryMathOperation* instr) {

if (CpuFeatures::IsSupported(SSE4_1) && !minus_zero_check) {

CpuFeatures::Scope scope(SSE4_1);

__ addsd(xmm_scratch, input_reg);

- __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown);

+ __ roundsd(xmm_scratch, xmm_scratch, Assembler::kRoundDown);

__ cvttsd2si(output_reg, xmm_scratch);

// Overflow is signalled with minint.

__ cmpl(output_reg, Immediate(0x80000000));

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