[PATCH] D136525: [M68k] Add codegen pattern for atomic load / store

[Sheng via Phabricator via llvm-commits]

0x59616e updated this revision to Diff 473237.
0x59616e added a comment.

update diff:

- We transform all atomic instruction to `__atomic_*` for sizes > 32.
- Otherwise, lower to either native instruction or `__sync_*` function call.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136525/new/

https://reviews.llvm.org/D136525

Files:
  llvm/lib/Target/M68k/M68kISelLowering.cpp
  llvm/lib/Target/M68k/M68kInstrAtomics.td
  llvm/lib/Target/M68k/M68kInstrInfo.td
  llvm/lib/Target/M68k/M68kTargetMachine.cpp
  llvm/test/CodeGen/M68k/Atomics/cmpxchg.ll
  llvm/test/CodeGen/M68k/Atomics/load-store.ll
  llvm/test/CodeGen/M68k/Atomics/rmw.ll
  llvm/test/CodeGen/M68k/pipeline.ll
  llvm/test/MC/Disassembler/M68k/atomics.txt
  llvm/test/MC/M68k/Atomics/cas.s

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