src/x64/lithium-x64.cc - Issue 15778006: DummyUse if Representation::Tagged()+Type::Smi() to Representation::Smi()

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

Issue 15778006: DummyUse if Representation::Tagged()+Type::Smi() to Representation::Smi() (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 7 years, 7 months ago

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Index: src/x64/lithium-x64.cc

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

index de21c10946dbee9b09c3e5b783c3a3c3376769e3..db98f238912ebf072790556b80b02f84334fc9ac 100644

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

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

@@ -1836,6 +1836,9 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {

} else if (to.IsSmi()) {

HValue* val = instr->value();

LOperand* value = UseRegister(val);

+ if (val->type().IsSmi()) {

+ return DefineSameAsFirst(new(zone()) LDummyUse(value));

+ }

return AssignEnvironment(

DefineSameAsFirst(new(zone()) LCheckSmiAndReturn(value)));

} else {

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