[PATCH] D147480: [M68k] Basic FP register files and FMOVE implementations

[Min-Yih Hsu via Phabricator via llvm-commits]

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- 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.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147480

Files:
  llvm/lib/Target/M68k/AsmParser/M68kAsmParser.cpp
  llvm/lib/Target/M68k/Disassembler/M68kDisassembler.cpp
  llvm/lib/Target/M68k/M68kInstrData.td
  llvm/lib/Target/M68k/M68kInstrInfo.td
  llvm/lib/Target/M68k/M68kRegisterInfo.td
  llvm/test/MC/Disassembler/M68k/fp-data.txt
  llvm/test/MC/M68k/Data/Classes/MxFMove_FF.s

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