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| author | Nick Lewycky <nicholas@mxc.ca> | 2011-12-08 22:36:35 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-12-08 22:36:35 +0000 |
| commit | c9b98ad7a7c3f2c098657a077a995912dce033e3 (patch) | |
| tree | 2a40bea26e4574002ea98ba07eb26f2bf3aaa219 /lib/Transforms/Scalar/DeadStoreElimination.cpp | |
| parent | e955726a0e306127317a4392aa70823c2a10420e (diff) | |
| download | llvm-c9b98ad7a7c3f2c098657a077a995912dce033e3.tar.gz llvm-c9b98ad7a7c3f2c098657a077a995912dce033e3.tar.bz2 llvm-c9b98ad7a7c3f2c098657a077a995912dce033e3.tar.xz | |
Fix infinite loop in DSE when deleting a free in a reachable loop that's also
trivially infinite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146197 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/DeadStoreElimination.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/DeadStoreElimination.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp index b9b1cc86c2..8729019705 100644 --- a/lib/Transforms/Scalar/DeadStoreElimination.cpp +++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp @@ -624,6 +624,7 @@ static void FindUnconditionalPreds(SmallVectorImpl<BasicBlock *> &Blocks, BasicBlock *BB, DominatorTree *DT) { for (pred_iterator I = pred_begin(BB), E = pred_end(BB); I != E; ++I) { BasicBlock *Pred = *I; + if (Pred == BB) continue; TerminatorInst *PredTI = Pred->getTerminator(); if (PredTI->getNumSuccessors() != 1) continue; @@ -853,4 +854,3 @@ void DSE::RemoveAccessedObjects(const AliasAnalysis::Location &LoadedLoc, I != E; ++I) DeadStackObjects.erase(*I); } - |