commit 4e3b903a957394e755dd0d3c89c17e9c46ee110e
author Benjamin Kramer <benny.kra@googlemail.com> Fri Feb 27 21:43:14 2015 +0000
committer Benjamin Kramer <benny.kra@googlemail.com> Fri Feb 27 21:43:14 2015 +0000
tree 932ccf9acd9ea6c85d278ed95d308882dbc3cdd0
parent 47d678391321a65acf401b4bd99a318f8e217121

Reduce double set lookups.

llvm-svn: 230798

llvm/lib/Analysis/LazyValueInfo.cpp

diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp
index 87c31fd..d4580dc 100644
--- a/llvm/lib/Analysis/LazyValueInfo.cpp
+++ b/llvm/lib/Analysis/LazyValueInfo.cpp
@@ -346,11 +346,10 @@
     /// Push BV onto BlockValueStack unless it's already in there.
     /// Returns true on success.
     bool pushBlockValue(const std::pair<BasicBlock *, Value *> &BV) {
-      if (BlockValueSet.count(BV))
+      if (!BlockValueSet.insert(BV).second)
         return false;  // It's already in the stack.
 
       BlockValueStack.push(BV);
-      BlockValueSet.insert(BV);
       return true;
     }