================
@@ -2817,6 +2817,46 @@ static bool interp__builtin_ia32_pshuf(InterpState &S,
CodePtr OpPC,
return true;
}
+static bool interp__builtin_ia32_movmsk_op(InterpState &S, CodePtr OpPC,
+ const CallExpr *Call) {
+ assert(Call->getNumArgs() == 1);
+
+ const Pointer &Source = S.Stk.pop<Pointer>();
+
+ unsigned SourceLen = Source.getNumElems();
+ const QualType ElemQT = getElemType(Source);
+ const OptPrimType ElemPT = S.getContext().classify(ElemQT);
+ unsigned LaneWidth = S.getASTContext().getTypeSize(ElemQT);
+
+ if (ElemQT->isIntegerType()) {
+ unsigned Byte = 8;
+ unsigned ResultLen = (LaneWidth * SourceLen) / Byte;
+ APInt Result(ResultLen, 0);
+ unsigned ResultIdx = 0;
+ for (unsigned I = 0; I != SourceLen; ++I) {
+ APInt Lane;
+ INT_TYPE_SWITCH_NO_BOOL(*ElemPT,
+ { Lane = Source.elem<T>(I).toAPSInt(); });
+ for (unsigned J = 0; J != LaneWidth; J += Byte) {
+ Result.setBitVal(ResultIdx++, Lane[J + 7]);
+ }
----------------
RKSimon wrote:
MOVMSK needs to work per element, not per byte - PMOVMSKB has a vXi8 type so
each element happens to be byte size, but all the ElemBitWidth/BitsInAByte code
is unnecessary
https://github.com/llvm/llvm-project/pull/161914
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