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Unified Diff: src/ia32/lithium-ia32.cc

Issue 23684056: NumberUntagD is faster when untagging in a temp register (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 3 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 07dbf13d19a3d4b20ccfb8d99cdc1ab0ddb1885b..9e315cc2a59cb4ac1a2caf57a13e5623849911ea 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1933,9 +1933,7 @@ LInstruction* LChunkBuilder::DoChange(HChange* instr) {
info()->MarkAsDeferredCalling();
LOperand* value = UseRegister(instr->value());
// Temp register only necessary for minus zero check.
- LOperand* temp = instr->deoptimize_on_minus_zero()
- ? TempRegister()
- : NULL;
+ LOperand* temp = TempRegister();
ulan 2013/09/12 08:35:04 Doesn't this increase register pressure?
LNumberUntagD* res = new(zone()) LNumberUntagD(value, temp);
return AssignEnvironment(DefineAsRegister(res));
} else if (to.IsSmi()) {
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