[Float2Int] Replace a ConstantRange copy with a move. Remove an extra call to MapVect...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302256 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/Float2Int.cpp b/lib/Transforms/Scalar/Float2Int.cpp
index 3c61a28bdd3c9ea11cfc68874695a08f08a21f3d..b105ece8dc7c47a3e34b8024057aae2f7b06698b 100644 (file)
--- a/lib/Transforms/Scalar/Float2Int.cpp
+++ b/lib/Transforms/Scalar/Float2Int.cpp
@@ -139,10 +139,11 @@ void Float2IntPass::findRoots(Function &F, SmallPtrSet<Instruction*,8> &Roots) {
 // Helper - mark I as having been traversed, having range R.
 void Float2IntPass::seen(Instruction *I, ConstantRange R) {
   DEBUG(dbgs() << "F2I: " << *I << ":" << R << "\n");
-  if (SeenInsts.find(I) != SeenInsts.end())
-    SeenInsts.find(I)->second = R;
+  auto IT = SeenInsts.find(I);
+  if (IT != SeenInsts.end())
+    IT->second = std::move(R);
   else
-    SeenInsts.insert(std::make_pair(I, R));
+    SeenInsts.insert(std::make_pair(I, std::move(R)));
 }
 
 // Helper - get a range representing a poison value.