[SROA] Preserve DebugLoc when rewriting alloca partitions
When rewriting an alloca partition copy the DL from the
old alloca over the the new one.
Differential Revision: https://reviews.llvm.org/D48640
llvm-svn: 335904
diff --git a/llvm/lib/Transforms/Scalar/SROA.cpp b/llvm/lib/Transforms/Scalar/SROA.cpp
index a541c55..6c3f012 100644
--- a/llvm/lib/Transforms/Scalar/SROA.cpp
+++ b/llvm/lib/Transforms/Scalar/SROA.cpp
@@ -4029,6 +4029,8 @@
NewAI = new AllocaInst(
SliceTy, AI.getType()->getAddressSpace(), nullptr, Alignment,
AI.getName() + ".sroa." + Twine(P.begin() - AS.begin()), &AI);
+ // Copy the old AI debug location over to the new one.
+ NewAI->setDebugLoc(AI.getDebugLoc());
++NumNewAllocas;
}