================
@@ -3128,6 +3128,52 @@ static bool interp__builtin_ia32_vpconflict(InterpState
&S, CodePtr OpPC,
return true;
}
+static bool interp__builtin_ia32_shuf(InterpState &S, CodePtr OpPC,
+ const CallExpr *Call) {
+ assert(Call->getNumArgs() == 3);
+
+ unsigned ShuffleMask = popToAPSInt(S, Call->getArg(2)).getZExtValue();
+ QualType Arg0Type = Call->getArg(0)->getType();
+ const auto *VecT = Arg0Type->castAs<VectorType>();
+ PrimType ElemT = *S.getContext().classify(VecT->getElementType());
+ unsigned NumElems = VecT->getNumElements();
+ unsigned LaneWidth = S.getContext().getBitWidth(VecT->getElementType());
----------------
RKSimon wrote:
LaneWidth -> ElemWidth (Lanes in x86 mean 128-bit subvectors)
https://github.com/llvm/llvm-project/pull/164078
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