================
@@ -3391,6 +3391,72 @@ static bool interp__builtin_ia32_shuffle_generic(
return true;
}
+static bool interp__builtin_ia32_shufbitqmb_mask(InterpState &S, CodePtr OpPC,
+ const CallExpr *Call) {
+
+ assert(Call->getNumArgs() == 3);
+
+ QualType SourceType = Call->getArg(0)->getType();
+ QualType ShuffleMaskType = Call->getArg(1)->getType();
+ QualType ZeroMaskType = Call->getArg(2)->getType();
+ if (!SourceType->isVectorType() || !ShuffleMaskType->isVectorType() ||
+ !ZeroMaskType->isIntegerType()) {
+ return false;
+ }
+
+ Pointer Source, ShuffleMask;
+ APSInt ZeroMask = popToAPSInt(S, Call->getArg(2));
+ ShuffleMask = S.Stk.pop<Pointer>();
+ Source = S.Stk.pop<Pointer>();
+
+ const auto *SourceVecT = SourceType->castAs<VectorType>();
+ const auto *ShuffleMaskVecT = ShuffleMaskType->castAs<VectorType>();
+ assert(SourceVecT->getNumElements() == ShuffleMaskVecT->getNumElements());
+ assert(ZeroMask.getBitWidth() == SourceVecT->getNumElements());
+
+ PrimType SourceElemT =
*S.getContext().classify(SourceVecT->getElementType());
+ PrimType ShuffleMaskElemT =
+ *S.getContext().classify(ShuffleMaskVecT->getElementType());
+
+ const unsigned NumBytesInQWord = 8;
+ const unsigned NumBitsInByte = 8;
+ const unsigned NumBytes = SourceVecT->getNumElements();
+ const unsigned NumQWords = NumBytes / NumBytesInQWord;
+ const unsigned RetWidth = ZeroMask.getBitWidth();
+ APSInt RetMask(llvm::APInt(RetWidth, 0), /*isUnsigned=*/true);
+
+ for (unsigned QWordId = 0; QWordId != NumQWords; ++QWordId) {
+
+ APInt SourceQWord(64, 0);
+ for (unsigned ByteInQWord = 0; ByteInQWord != NumBytesInQWord;
+ ++ByteInQWord) {
+ uint64_t Byte = 0;
+ INT_TYPE_SWITCH(SourceElemT, {
+ Byte = static_cast<uint64_t>(
+ Source.elem<T>(QWordId * NumBytesInQWord + ByteInQWord));
+ });
+ SourceQWord |= (Byte & 0xFF) << (ByteInQWord * NumBitsInByte);
+ }
+
+ for (unsigned ByteInQWord = 0; ByteInQWord != NumBytesInQWord;
----------------
RKSimon wrote:
ByteInQWord -> ByteIdx to help compact code?
https://github.com/llvm/llvm-project/pull/168100
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