[PATCH] D28412: Fix use after free

[Xin Tong via Phabricator via llvm-commits]

trentxintong created this revision.
trentxintong added reviewers: chenli, atrick, hfinkel, mzolotukhin.
trentxintong added a subscriber: llvm-commits.

Fix use after free in LoopUnswitch


https://reviews.llvm.org/D28412

Files:
  lib/Transforms/Scalar/LoopUnswitch.cpp


Index: lib/Transforms/Scalar/LoopUnswitch.cpp
===================================================================
--- lib/Transforms/Scalar/LoopUnswitch.cpp
+++ lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -1382,8 +1382,8 @@
         Pred->getInstList().splice(BI->getIterator(), Succ->getInstList(),
                                    Succ->begin(), Succ->end());
         LPM->deleteSimpleAnalysisValue(BI, L);
-        BI->eraseFromParent();
         RemoveFromWorklist(BI, Worklist);
+        BI->eraseFromParent();
 
         // Remove Succ from the loop tree.
         LI->removeBlock(Succ);


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