[llvm-commits] [llvm] r104645 - /llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp

[Dan Gohman]

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;