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author | Alexey Bataev <a.bataev@hotmail.com> | 2014-04-15 09:37:30 +0000 |
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committer | Alexey Bataev <a.bataev@hotmail.com> | 2014-04-15 09:37:30 +0000 |
commit | 15cbb64eb4bb19e3b21e1c75af3096bced18eb2a (patch) | |
tree | 9c850430cd3a54474c5db76350e83ae87baf9b46 /lib/Transforms/Scalar/LoopRotation.cpp | |
parent | 47b284ce3539ef216e0ab994f4b7d762cfb1c69a (diff) | |
download | llvm-15cbb64eb4bb19e3b21e1c75af3096bced18eb2a.tar.gz llvm-15cbb64eb4bb19e3b21e1c75af3096bced18eb2a.tar.bz2 llvm-15cbb64eb4bb19e3b21e1c75af3096bced18eb2a.tar.xz |
D3348 - [BUG] "Rotate Loop" pass kills "llvm.vectorizer.enable" metadata
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206266 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/LoopRotation.cpp')
-rw-r--r-- | lib/Transforms/Scalar/LoopRotation.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopRotation.cpp b/lib/Transforms/Scalar/LoopRotation.cpp index fde6bacb49..f0c9d5229b 100644 --- a/lib/Transforms/Scalar/LoopRotation.cpp +++ b/lib/Transforms/Scalar/LoopRotation.cpp @@ -82,6 +82,9 @@ bool LoopRotate::runOnLoop(Loop *L, LPPassManager &LPM) { if (skipOptnoneFunction(L)) return false; + // Save the loop metadata. + MDNode *LoopMD = L->getLoopID(); + LI = &getAnalysis<LoopInfo>(); TTI = &getAnalysis<TargetTransformInfo>(); @@ -96,6 +99,12 @@ bool LoopRotate::runOnLoop(Loop *L, LPPassManager &LPM) { MadeChange = true; SimplifiedLatch = false; } + + // Restore the loop metadata. + // NB! We presume LoopRotation DOESN'T ADD its own metadata. + if ((MadeChange || SimplifiedLatch) && LoopMD) + L->setLoopID(LoopMD); + return MadeChange; } |