I've already described so called predicates. Unfortunately they have only size of operands. Unlike predicates properties also have types:
IDEST_OPERAND_MAP = (1<<INDEX(Rd));
IDEST_OPERAND_TYPE = (1<<IOPERAND_TYPE_GENERIC);
IDEST2_OPERAND_MAP = (1<<IOPERAND_MAP_NON_EXISTENT_OPERAND);
IDEST2_OPERAND_TYPE = (1<<IOPERAND_TYPE_NON_EXISTENT_OPERAND);
ISRC_B_OPERAND_MAP = (1<<INDEX(Rb));
ISRC_B_OPERAND_TYPE = (1<<IOPERAND_TYPE_GENERIC);
ISRC_C_OPERAND_MAP = (1<<INDEX(Rc));
ISRC_C_OPERAND_TYPE = (1<<IOPERAND_TYPE_TEX);
ISRC_A_OPERAND_MAP = (1<<INDEX(Ra));
ISRC_A_OPERAND_TYPE = (1<<IOPERAND_TYPE_SURFACE_COORDINATES);
This sample for suatom instruction. Here destination has single operand so DEST2 marked with NON_EXISTENT_OPERAND. Unfortunately properties has couple of serious drawbacks:
1) they were cut out by paranoid NVidia somewhere in version 12.7-12.8, so I ripped MDs with properties up to sm90 - sm100, sm101 & sm120 don't have them. I also tried to re-apply properties from sm90 to 3 remained - but this is very unreliable
2) they are not complete. Lets see couple of samples
