diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/SROA.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/SROA.cpp b/lib/Transforms/Scalar/SROA.cpp index acfa87a32e..97c28d442a 100644 --- a/lib/Transforms/Scalar/SROA.cpp +++ b/lib/Transforms/Scalar/SROA.cpp @@ -1300,10 +1300,13 @@ static Value *getNaturalGEPRecursively(IRBuilder<> &IRB, const TargetData &TD, if (Ty->isPointerTy()) return 0; + // We try to analyze GEPs over vectors here, but note that these GEPs are + // extremely poorly defined currently. The long-term goal is to remove GEPing + // over a vector from the IR completely. if (VectorType *VecTy = dyn_cast<VectorType>(Ty)) { unsigned ElementSizeInBits = VecTy->getScalarSizeInBits(); if (ElementSizeInBits % 8) - return 0; // GEPs over multiple of 8 size vector elements are invalid. + return 0; // GEPs over non-multiple of 8 size vector elements are invalid. APInt ElementSize(Offset.getBitWidth(), ElementSizeInBits / 8); APInt NumSkippedElements = Offset.udiv(ElementSize); if (NumSkippedElements.ugt(VecTy->getNumElements())) |