[llvm-commits] [llvm] r104645 - /llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
Dan Gohman
gohman at apple.com
Tue May 25 14:59:42 PDT 2010
Author: djg
Date: Tue May 25 16:59:42 2010
New Revision: 104645
URL: http://llvm.org/viewvc/llvm-project?rev=104645&view=rev
Log:
Do one map lookup instead of two.
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp?rev=104645&r1=104644&r2=104645&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp Tue May 25 16:59:42 2010
@@ -99,8 +99,9 @@
// cache values defined by Instructions across blocks, and other values
// only locally. This is because Instructions already have the SSA
// def-dominates-use requirement enforced.
- if (ValueMap.count(V))
- return ValueMap[V];
+ DenseMap<const Value *, unsigned>::iterator I = ValueMap.find(V);
+ if (I != ValueMap.end())
+ return I->second;
unsigned Reg = LocalValueMap[V];
if (Reg != 0)
return Reg;
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