- Added missing VOP3P opcodes (see https://bugs.llvm.org//show_bug.cgi?id=33593):
- v_pk_sub_u16
- v_pk_mad_i16
- v_pk_mad_u16
- Corrected v_pk_sub_i16 (was labelled as commutable by mistake);
Corrected parser to use MCRegAliasIterator instead of isRegIntersect (as suggested by Matt);
Removed isRegIntersect.