================
@@ -2778,6 +2808,60 @@ void VPWidenPointerInductionRecipe::print(raw_ostream
&O, const Twine &Indent,
}
#endif
+void VPAliasLaneMaskRecipe::execute(VPTransformState &State) {
+ IRBuilderBase Builder = State.Builder;
+ Value *SinkValue = State.get(getSinkValue(), 0, true);
+ Value *SourceValue = State.get(getSourceValue(), 0, true);
+
+ unsigned ElementSize = 0;
+ auto *ReadInsn = cast<Instruction>(SourceValue);
+ auto *ReadCast = dyn_cast<CastInst>(SourceValue);
+ if (ReadInsn->getOpcode() == Instruction::Add)
+ ReadCast = dyn_cast<CastInst>(ReadInsn->getOperand(0));
+
+ if (ReadCast && ReadCast->getOpcode() == Instruction::PtrToInt) {
+ Value *Ptr = ReadCast->getOperand(0);
+ for (auto *Use : Ptr->users()) {
+ if (auto *GEP = dyn_cast<GetElementPtrInst>(Use)) {
+ auto *EltVT = GEP->getSourceElementType();
+ if (EltVT->isArrayTy())
+ ElementSize = EltVT->getArrayElementType()->getScalarSizeInBits() *
+ EltVT->getArrayNumElements();
+ else
+ ElementSize = GEP->getSourceElementType()->getScalarSizeInBits() / 8;
+ break;
+ }
+ }
+ }
+ assert(ElementSize > 0 && "Couldn't get element size from pointer");
----------------
SamTebbs33 wrote:
Thanks Graham, I've had a deeper look and `PointerDiffInfo` provides an
`AccessSize` which corresponds to what we want, so I'm using that now.
https://github.com/llvm/llvm-project/pull/100579
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