diff options
| author | Dan Gohman <gohman@apple.com> | 2009-11-05 21:47:04 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-11-05 21:47:04 +0000 |
| commit | 32cc5f47fa6a544bb77afcdc92c37ba32bfc0c4f (patch) | |
| tree | e05252b5e1137171e1e0db7579551f5066e8ca6a | |
| parent | f4e82d1f2e25f7cf8b7e9c3bd42b0e384139e07e (diff) | |
LoopDeletion depends on loops having dedicated exits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86180 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Transforms/Scalar/LoopDeletion.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopDeletion.cpp b/lib/Transforms/Scalar/LoopDeletion.cpp index 866d8b41d9..48817ab9d5 100644 --- a/lib/Transforms/Scalar/LoopDeletion.cpp +++ b/lib/Transforms/Scalar/LoopDeletion.cpp @@ -115,6 +115,10 @@ bool LoopDeletion::runOnLoop(Loop* L, LPPassManager& LPM) { if (!preheader) return false; + // If LoopSimplify form is not available, stay out of trouble. + if (!L->hasDedicatedExits()) + return false; + // We can't remove loops that contain subloops. If the subloops were dead, // they would already have been removed in earlier executions of this pass. if (L->begin() != L->end()) |