Revision: 14401
Author: [email protected]
Date: Wed Apr 24 02:14:56 2013
Log: If the input to an HChange is of type smi, then no need to mark
gvn flag changes new space promotion.
BUG=
Review URL: https://codereview.chromium.org/14253010
http://code.google.com/p/v8/source/detail?r=14401
Modified:
/branches/bleeding_edge/src/hydrogen-instructions.h
=======================================
--- /branches/bleeding_edge/src/hydrogen-instructions.h Tue Apr 23 06:08:10
2013
+++ /branches/bleeding_edge/src/hydrogen-instructions.h Wed Apr 24 02:14:56
2013
@@ -1757,11 +1757,15 @@
ASSERT(!value->representation().IsNone() && !to.IsNone());
ASSERT(!value->representation().Equals(to));
set_representation(to);
- set_type(HType::TaggedNumber());
SetFlag(kUseGVN);
if (deoptimize_on_undefined) SetFlag(kDeoptimizeOnUndefined);
if (is_truncating) SetFlag(kTruncatingToInt32);
- if (to.IsTagged()) SetGVNFlag(kChangesNewSpacePromotion);
+ if (value->type().IsSmi()) {
+ set_type(HType::Smi());
+ } else {
+ set_type(HType::TaggedNumber());
+ if (to.IsTagged()) SetGVNFlag(kChangesNewSpacePromotion);
+ }
}
virtual HValue* EnsureAndPropagateNotMinusZero(BitVector* visited);
--
--
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