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Unified Diff: src/ia32/lithium-ia32.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/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index ffec17b6eecd8a900f05101058382d36b29a3dc3..e5b1474b68295ee34f0b4d4ba0d0213ed371bb15 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1940,6 +1940,9 @@ 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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