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| author | Cameron Zwarich <zwarich@apple.com> | 2011-02-10 23:53:14 +0000 |
|---|---|---|
| committer | Cameron Zwarich <zwarich@apple.com> | 2011-02-10 23:53:14 +0000 |
| commit | 97dae4d361b96e10ff450c0dccab48d2bccb5685 (patch) | |
| tree | ee3e47ff73abcc3be1d8217bee472cb189473c2f /llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | |
| parent | d8e66038f40920765469919b7168e19f72c368b5 (diff) | |
| download | bcm5719-llvm-97dae4d361b96e10ff450c0dccab48d2bccb5685.tar.gz bcm5719-llvm-97dae4d361b96e10ff450c0dccab48d2bccb5685.zip | |
If we can't avoid running loop-simplify twice for now, at least avoid running
iv-users twice.
llvm-svn: 125318
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 01dcfaf0652..ac4aea2e404 100644 --- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -3824,6 +3824,9 @@ void LoopStrengthReduce::getAnalysisUsage(AnalysisUsage &AU) const { AU.addPreserved<DominatorTree>(); AU.addRequired<ScalarEvolution>(); AU.addPreserved<ScalarEvolution>(); + // Requiring LoopSimplify a second time here prevents IVUsers from running + // twice, since LoopSimplify was invalidated by running ScalarEvolution. + AU.addRequiredID(LoopSimplifyID); AU.addRequired<IVUsers>(); AU.addPreserved<IVUsers>(); } |
