================
@@ -1476,8 +1486,14 @@ CoerceScalableToFixed(CodeGenFunction &CGF,
llvm::FixedVectorType *ToTy,
// If we are casting a scalable i1 predicate vector to a fixed i8
// vector, first bitcast the source.
if (FromTy->getElementType()->isIntegerTy(1) &&
- FromTy->getElementCount().isKnownMultipleOf(8) &&
ToTy->getElementType() == CGF.Builder.getInt8Ty()) {
+ if (!FromTy->getElementCount().isKnownMultipleOf(8)) {
+ FromTy = llvm::ScalableVectorType::get(
+ FromTy->getElementType(),
+ llvm::alignTo<8>(FromTy->getElementCount().getKnownMinValue()));
+ llvm::Value *ZeroVec = llvm::Constant::getNullValue(FromTy);
----------------
topperc wrote:
I wasn't sure of the semantics of bitcasting poison elements to a larger
element type. Does it poison just the bits or the whole element?
https://github.com/llvm/llvm-project/pull/139190
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