[PATCH] D40092: [globalisel][irtranslator] Add support for atomicrmw and (strong) cmpxchg

[Daniel Sanders via Phabricator via llvm-commits]

dsanders created this revision.
Herald added subscribers: igorb, javed.absar, kristof.beyls.

This patch adds support for the atomicrmw instructions and the strong
cmpxchg instruction to the IRTranslator.

I've left out weak cmpxchg because LangRef.rst isn't entirely clear on what
difference it makes to the backend. As far as I can tell from the code, it
only matters to AtomicExpandPass which is run at the LLVM-IR level.


https://reviews.llvm.org/D40092

Files:
  include/llvm/CodeGen/GlobalISel/IRTranslator.h
  include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
  include/llvm/Target/GenericOpcodes.td
  include/llvm/Target/TargetOpcodes.def
  lib/CodeGen/GlobalISel/IRTranslator.cpp
  lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
  test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll

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