Do one map lookup instead of two.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104645 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 1996c19..95f4d07 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -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;