Marking debug info intrinsics as not touching memory
caused them to be considered trivially dead. Fix this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65979 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index 38809e5..d2cbec0 100644
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -159,6 +159,9 @@
bool llvm::isInstructionTriviallyDead(Instruction *I) {
if (!I->use_empty() || isa<TerminatorInst>(I)) return false;
+ // We don't want debug info removed by anything this general.
+ if (isa<DbgInfoIntrinsic>(I)) return false;
+
if (!I->mayWriteToMemory())
return true;