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MIPS: DummyUse if Representation::Tagged()+Type::Smi() to Representation::Smi()

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Port r14802 (d4a53e02)

BUG=

Review URL: https://codereview.chromium.org/16019009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14811 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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palfia@homejinni.com 2013-05-24 20:19:18 +00:00
parent 4e9b4a7b59
commit eff0995922
1 changed files with 3 additions and 0 deletions
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3
src/mips/lithium-mips.cc
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@ -1781,6 +1781,9 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {
} else if (to.IsSmi()) { } else if (to.IsSmi()) {
HValue* val = instr->value(); HValue* val = instr->value();
LOperand* value = UseRegister(val); LOperand* value = UseRegister(val);
if (val->type().IsSmi()) {
return DefineSameAsFirst(new(zone()) LDummyUse(value));
}
return AssignEnvironment( return AssignEnvironment(
DefineSameAsFirst(new(zone()) LCheckSmiAndReturn(value))); DefineSameAsFirst(new(zone()) LCheckSmiAndReturn(value)));
} else { } else {