commit 6fff9dc932a708d0a5c78073e855f94990bffffc
author Sanjoy Das <sanjoy@playingwithpointers.com> Fri May 27 19:03:10 2016 +0000
committer Sanjoy Das <sanjoy@playingwithpointers.com> Fri May 27 19:03:10 2016 +0000
tree 31e7537325aa0128d0aff00bd22914694d4587d0
parent a75c77b127784476900e9d0c302aea026e039221

[GVN] Preserve !range metadata when PRE'ing loads

Reviewers: dberlin, reames, george.burgess.iv

Subscribers: mcrosier, llvm-commits

Differential Revision: http://reviews.llvm.org/D20743

llvm-svn: 271034

llvm/lib/Transforms/Scalar/GVN.cpp

diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp
index 97ec1ea..5236c52 100644
--- a/llvm/lib/Transforms/Scalar/GVN.cpp
+++ b/llvm/lib/Transforms/Scalar/GVN.cpp
@@ -1567,6 +1567,8 @@
       NewLoad->setMetadata(LLVMContext::MD_invariant_load, MD);
     if (auto *InvGroupMD = LI->getMetadata(LLVMContext::MD_invariant_group))
       NewLoad->setMetadata(LLVMContext::MD_invariant_group, InvGroupMD);
+    if (auto *RangeMD = LI->getMetadata(LLVMContext::MD_range))
+      NewLoad->setMetadata(LLVMContext::MD_range, RangeMD);
 
     // Transfer DebugLoc.
     NewLoad->setDebugLoc(LI->getDebugLoc());