[PATCH] D123169: AtomicExpand: Change return type for shouldExpandAtomicStoreInIR

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: jyknight, efriedma, wsmoses, kparzysz, jberdine, reames.
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Herald added a subscriber: wdng.
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Use the same enum as the other atomic instructions for consistency, in
preparation for addition of another strategy.

      

Introduce a new "Expand" option, since the store expansion does not
use cmpxchg. Alternatively, the existing CmpXChg strategy could be
renamed to Expand.


https://reviews.llvm.org/D123169

Files:
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/lib/CodeGen/AtomicExpandPass.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/ARM/ARMISelLowering.cpp
  llvm/lib/Target/ARM/ARMISelLowering.h
  llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
  llvm/lib/Target/Hexagon/HexagonISelLowering.h
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86ISelLowering.h

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