Make sure we don't emit instructions before a landingpad instruction.
PR14782
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171846 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/DemoteRegToStack.cpp b/lib/Transforms/Utils/DemoteRegToStack.cpp
index ee59e94..d5c41f5 100644
--- a/lib/Transforms/Utils/DemoteRegToStack.cpp
+++ b/lib/Transforms/Utils/DemoteRegToStack.cpp
@@ -124,7 +124,12 @@
}
// Insert a load in place of the PHI and replace all uses.
- Value *V = new LoadInst(Slot, P->getName()+".reload", P);
+ BasicBlock::iterator InsertPt = P;
+
+ for (; isa<PHINode>(InsertPt) || isa<LandingPadInst>(InsertPt); ++InsertPt)
+ /* empty */; // Don't insert before PHI nodes or landingpad instrs.
+
+ Value *V = new LoadInst(Slot, P->getName()+".reload", InsertPt);
P->replaceAllUsesWith(V);
// Delete PHI.