diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/AlignmentFromAssumptions.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/AlignmentFromAssumptions.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/AlignmentFromAssumptions.cpp b/llvm/lib/Transforms/Scalar/AlignmentFromAssumptions.cpp index 9ecaefe85bc..c1df3173c0f 100644 --- a/llvm/lib/Transforms/Scalar/AlignmentFromAssumptions.cpp +++ b/llvm/lib/Transforms/Scalar/AlignmentFromAssumptions.cpp @@ -297,6 +297,11 @@ bool AlignmentFromAssumptionsPass::processAssumption(CallInst *ACall) { if (!extractAlignmentInfo(ACall, AAPtr, AlignSCEV, OffSCEV)) return false; + // Skip ConstantPointerNull and UndefValue. Assumptions on these shouldn't + // affect other users. + if (isa<ConstantData>(AAPtr)) + return false; + const SCEV *AASCEV = SE->getSCEV(AAPtr); // Apply the assumption to all other users of the specified pointer. |
