From c9b98ad7a7c3f2c098657a077a995912dce033e3 Mon Sep 17 00:00:00 2001 From: Nick Lewycky Date: Thu, 8 Dec 2011 22:36:35 +0000 Subject: 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 --- lib/Transforms/Scalar/DeadStoreElimination.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib/Transforms/Scalar/DeadStoreElimination.cpp') 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 &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); } - -- cgit v1.2.3