src/a64/lithium-a64.cc - Issue 172133003: Harmony: optimize Math.clz32.

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Unified Diff: src/a64/lithium-a64.cc

Issue 172133003: Harmony: optimize Math.clz32. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 6 years, 10 months ago

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Index: src/a64/lithium-a64.cc

diff --git a/src/a64/lithium-a64.cc b/src/a64/lithium-a64.cc

index fa351e39282882426461f616b171497c1cf8b7ce..3857ca7fc352157d738927885a214bcbb23323dc 100644

--- a/src/a64/lithium-a64.cc

+++ b/src/a64/lithium-a64.cc

@@ -2377,6 +2377,12 @@ LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) {

LOperand* input = UseRegisterAtStart(instr->value());

return DefineAsRegister(new(zone()) LMathSqrt(input));

}

+ case kMathClz32: {

+ ASSERT(instr->representation().IsInteger32());

+ ASSERT(instr->value()->representation().IsInteger32());

+ LOperand* input = UseRegisterAtStart(instr->value());

+ return DefineAsRegister(new(zone()) LMathClz32(input));

+ }

default:

UNREACHABLE();

return NULL;