[all-commits] [llvm/llvm-project] 70511e: [M68k] Fix CConvs for pointer type return values

[Min-Yih Hsu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 70511e61761eb7d1c4fb5ff1a8383ced18843753
      https://github.com/llvm/llvm-project/commit/70511e61761eb7d1c4fb5ff1a8383ced18843753
  Author: Min-Yih Hsu <minyihh at uci.edu>
  Date:   2023-03-24 (Fri, 24 Mar 2023)

  Changed paths:
    M llvm/lib/Target/M68k/M68kCallingConv.td
    M llvm/test/CodeGen/M68k/CodeModel/medium-pic.ll
    M llvm/test/CodeGen/M68k/CodeModel/medium-static.ll
    M llvm/test/CodeGen/M68k/CodeModel/small-pic.ll
    M llvm/test/CodeGen/M68k/CodeModel/small-static.ll

  Log Message:
  -----------
  [M68k] Fix CConvs for pointer type return values

Put the value into A0 instead of data registers. And remove the
redundant `RetCC_M68kCommon` as there aren't many rules shared between
existing CCs other than the pointer one.
This change is tested by existing tests.