When we delete instructions from the loop, make sure to remove them from the

AliasSetTracker as well.

llvm-svn: 10507

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/Scalar/LICM.cpp b/llvm/lib/Transforms/Scalar/LICM.cpp
index 6046f02563e..19162292ee1 100644
--- a/llvm/lib/Transforms/Scalar/LICM.cpp
+++ b/llvm/lib/Transforms/Scalar/LICM.cpp
@@ -387,6 +387,7 @@ void LICM::sink(Instruction &I) {
   if (ExitBlocks.size() == 1) {
     if (!isExitBlockDominatedByBlockInLoop(ExitBlocks[0], I.getParent())) {
       // Instruction is not used, just delete it.
+      CurAST->remove(&I);
       I.getParent()->getInstList().erase(&I);
     } else {
       // Move the instruction to the start of the exit block, after any PHI
@@ -399,6 +400,7 @@ void LICM::sink(Instruction &I) {
     }
   } else if (ExitBlocks.size() == 0) {
     // The instruction is actually dead if there ARE NO exit blocks.
+    CurAST->remove(&I);
     I.getParent()->getInstList().erase(&I);
   } else {
     // Otherwise, if we have multiple exits, use the PromoteMem2Reg function to