diff options
Diffstat (limited to 'llvm/lib/IR/ConstantFold.cpp')
| -rw-r--r-- | llvm/lib/IR/ConstantFold.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/IR/ConstantFold.cpp b/llvm/lib/IR/ConstantFold.cpp index bf01f9f..6e24f03 100644 --- a/llvm/lib/IR/ConstantFold.cpp +++ b/llvm/lib/IR/ConstantFold.cpp @@ -873,6 +873,12 @@ Constant *llvm::ConstantFoldShuffleVectorInstruction(Constant *V1, // Don't break the bitcode reader hack. if (isa<ConstantExpr>(Mask)) return nullptr; + // Do not iterate on scalable vector. The num of elements is unknown at + // compile-time. + VectorType *ValTy = cast<VectorType>(V1->getType()); + if (ValTy->isScalable()) + return nullptr; + unsigned SrcNumElts = V1->getType()->getVectorNumElements(); // Loop over the shuffle mask, evaluating each element. |