- FP registers and register classes definitions
- MC support for FP registers
- MC support for the FPDR -> FPDR variant of FMOVE/FSMOVE/FDSMOVE
Note that we don't implement 32/64-bit FP registers with subregisters since
f32/f64 values will be converted to f80 upon storing into a register,
rather than occupying part of the register.
So we only use register classes with different value types to distinguish
them.
Differential Revision: https://reviews.llvm.org/D147480
7486b7b6ba