diff options
Diffstat (limited to 'llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp index 97a61bd0d78..49f8658ef45 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp @@ -563,7 +563,8 @@ void LoopVectorizationLegality::addInductionPhi( // back into the PHI node may have external users. // We can allow those uses, except if the SCEVs we have for them rely // on predicates that only hold within the loop, since allowing the exit - // currently means re-using this SCEV outside the loop. + // currently means re-using this SCEV outside the loop (see PR33706 for more + // details). if (PSE.getUnionPredicate().isAlwaysTrue()) { AllowedExit.insert(Phi); AllowedExit.insert(Phi->getIncomingValueForBlock(TheLoop->getLoopLatch())); |
