Avoid performing two identical lookups when one will suffice

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10370 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LICM.cpp b/lib/Transforms/Scalar/LICM.cpp
index 2293c17c00154011e913658ec4987a090e999536..cab43bd9fe1fa3c1f133e83397a461de14a5df78 100644 (file)
--- a/lib/Transforms/Scalar/LICM.cpp
+++ b/lib/Transforms/Scalar/LICM.cpp
@@ -603,9 +603,7 @@ void LICM::PromoteValuesInLoop() {
 
   const std::vector<BasicBlock*> &ExitBlocks = CurLoop->getExitBlocks();
   for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i)
-    if (!ProcessedBlocks.count(ExitBlocks[i])) {
-      ProcessedBlocks.insert(ExitBlocks[i]);
-    
+    if (ProcessedBlocks.insert(ExitBlocks[i]).second) {
       // Copy all of the allocas into their memory locations...
       BasicBlock::iterator BI = ExitBlocks[i]->begin();
       while (isa<PHINode>(*BI))