search for: scalarreg

...isters to store predicate values (vector comparisons results are also stored as a bit mask in a scalar register). I've currently specified that scalar registers can be either of type v16i1 (for predicates; vectors have 16 elements) or i32, which would allow them to work in either context: def ScalarReg : RegisterClass<"VP", [i32, v16i1… I soon realized this has an onerous side effect. Since vector comparison results (of type v16i1) can be used in arithmetic, most instructions that deal with scalar registers need to have a patterns for every permutation of v16i1 and i32 parameters....