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authorChris Lattner <sabre@nondot.org>2008-12-03 07:45:15 +0000
committerChris Lattner <sabre@nondot.org>2008-12-03 07:45:15 +0000
commita026266c4e3e0fb1137b63dc1cd020e89c2f6965 (patch)
tree7e1b30afc3ff4873062ecbbb2ea16c0fb0f1b7a6 /lib/Transforms/Utils/BasicBlockUtils.cpp
parent54e7dfe9822b539dd716c17ab2627a31741f13bb (diff)
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third time is the charm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60469 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/BasicBlockUtils.cpp')
-rw-r--r--lib/Transforms/Utils/BasicBlockUtils.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp
index 1a255a4..45cfe8f 100644
--- a/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -27,7 +27,9 @@ using namespace llvm;
/// DeleteDeadBlock - Delete the specified block, which must have no
/// predecessors.
void llvm::DeleteDeadBlock(BasicBlock *BB) {
- assert(pred_begin(BB) == pred_end(BB) && "Block is not dead!");
+ assert((pred_begin(BB) == pred_end(BB) ||
+ // Can delete self loop.
+ BB->getSinglePredecessor() == BB) && "Block is not dead!");
TerminatorInst *BBTerm = BB->getTerminator();
// Loop through all of our successors and make sure they know that one