Pass DebugLoc and SDLoc by const ref.

This used to be free, copying and moving DebugLocs became expensive
after the metadata rewrite. Passing by reference eliminates a ton of
track/untrack operations. No functionality change intended.

llvm-svn: 272512

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
index 67778398332..d99d4b6e596 100644
--- a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
@@ -1123,7 +1123,7 @@ bool LoopIdiomRecognize::recognizePopcount() {
 }
 
 static CallInst *createPopcntIntrinsic(IRBuilder<> &IRBuilder, Value *Val,
-                                       DebugLoc DL) {
+                                       const DebugLoc &DL) {
   Value *Ops[] = {Val};
   Type *Tys[] = {Val->getType()};