diff options
| author | Dan Gohman <gohman@apple.com> | 2009-11-05 21:11:53 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-11-05 21:11:53 +0000 |
| commit | aef6c7a849c4e8bdd07c017aef2dcfb8c019e287 (patch) | |
| tree | 940b395910c450d7c9e00a014e1592e4982bdca8 /lib/Transforms/Scalar/LoopIndexSplit.cpp | |
| parent | 6c41ba177e160a4c26c6c9c7c49d27cbecf1a94b (diff) | |
| download | external_llvm-aef6c7a849c4e8bdd07c017aef2dcfb8c019e287.tar.gz external_llvm-aef6c7a849c4e8bdd07c017aef2dcfb8c019e287.tar.bz2 external_llvm-aef6c7a849c4e8bdd07c017aef2dcfb8c019e287.zip | |
Update various Loop optimization passes to cope with the possibility that
LoopSimplify form may not be available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86175 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/LoopIndexSplit.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/LoopIndexSplit.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp index 920d85c8b6..8b6a233431 100644 --- a/lib/Transforms/Scalar/LoopIndexSplit.cpp +++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp @@ -209,6 +209,10 @@ bool LoopIndexSplit::runOnLoop(Loop *IncomingLoop, LPPassManager &LPM_Ref) { L = IncomingLoop; LPM = &LPM_Ref; + // If LoopSimplify form is not available, stay out of trouble. + if (!L->isLoopSimplifyForm()) + return false; + // FIXME - Nested loops make dominator info updates tricky. if (!L->getSubLoops().empty()) return false; |