================
@@ -2820,6 +2820,65 @@ static bool interp__builtin_ia32_pmul(
return true;
}
+static bool interp__builtin_ia32_dbpsadbw(InterpState &S, CodePtr OpPC,
+ const CallExpr *Call) {
+ assert(Call->getNumArgs() == 3);
+ QualType Arg2Type = Call->getArg(2)->getType();
+ APSInt ImmVal = popToAPSInt(S, Arg2Type);
+ unsigned Imm = ImmVal.getZExtValue();
+
+ const Pointer &Src2 = S.Stk.pop<Pointer>();
+ const Pointer &Src1 = S.Stk.pop<Pointer>();
+ const Pointer &Dst = S.Stk.peek<Pointer>();
+
+ const auto *SrcVT = Call->getArg(0)->getType()->castAs<VectorType>();
+ PrimType SrcElemT = *S.getContext().classify(SrcVT->getElementType());
+ unsigned SourceLen = SrcVT->getNumElements();
+
+ const auto *DestVT = Call->getType()->castAs<VectorType>();
+ PrimType DestElemT = *S.getContext().classify(DestVT->getElementType());
+ bool DestUnsigned = Call->getType()->isUnsignedIntegerOrEnumerationType();
+
+ unsigned LaneSize = 16; // 128-bit lane = 16 bytes
+ unsigned NumLanes = SourceLen / LaneSize;
+ unsigned BlockOffsetA = (Imm & 0x3) * 4;
+ unsigned BlockOffsetB = ((Imm >> 2) & 0x3) * 4;
+
+ unsigned DstIdx = 0;
+ for (unsigned Lane = 0; Lane < NumLanes; ++Lane) {
----------------
tbaederr wrote:
```suggestion
for (unsigned Lane = 0; Lane != NumLanes; ++Lane) {
```
https://github.com/llvm/llvm-project/pull/188887
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