[PATCH] D108597: [M68k][AsmParser] Support parsing register masks & fix printing them

[Ricky Taylor via Phabricator via llvm-commits]

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Fixes PR51580.

Register masks will now be printed as 'movem.l (%sp), %a0-%a5/%d5'
for example and can now be parsed in the same format.

Previously the printed syntax was 'movem.l (%sp), %a0-%a5,%d', which
didn't match prior art and was too ambiguous to easily parse.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108597

Files:
  llvm/lib/Target/M68k/AsmParser/M68kAsmParser.cpp
  llvm/lib/Target/M68k/M68kInstrInfo.td
  llvm/lib/Target/M68k/MCTargetDesc/M68kInstPrinter.cpp
  llvm/test/CodeGen/M68k/CollapseMOVEM.mir
  llvm/test/MC/M68k/instructions.s

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