}
}
+void DecodeVPERM2F128Mask(EVT VT, unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ unsigned HalfSize = VT.getVectorNumElements()/2;
+ unsigned FstHalfBegin = (Imm & 0x3) * HalfSize;
+ unsigned SndHalfBegin = ((Imm >> 4) & 0x3) * HalfSize;
+
+ for (int i = FstHalfBegin, e = FstHalfBegin+HalfSize; i != e; ++i)
+ ShuffleMask.push_back(i);
+ for (int i = SndHalfBegin, e = SndHalfBegin+HalfSize; i != e; ++i)
+ ShuffleMask.push_back(i);
+}
+
+void DecodeVPERM2F128Mask(unsigned Imm,
+ SmallVectorImpl<unsigned> &ShuffleMask) {
+ // VPERM2F128 is used by any 256-bit EVT, but X86InstComments only
+ // has information about the instruction and not the types. So for
+ // instruction comments purpose, assume the 256-bit vector is v4i64.
+ return DecodeVPERM2F128Mask(MVT::v4i64, Imm, ShuffleMask);
+}
+
} // llvm namespace