[PATCH] D109827: AArch64: use ldp/stp for 128-bit atomic load/store with v8.4

[Tim Northover via Phabricator via llvm-commits]

t.p.northover updated this revision to Diff 372908.
t.p.northover added a comment.

- Added tests.
- Switched to existing SDAG LDP/STP route for volatiles.
- Simplified GISel path with matching expressions.
- Think I fixed everything else mentioned.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109827/new/

https://reviews.llvm.org/D109827

Files:
  llvm/lib/Target/AArch64/AArch64.td
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/AArch64/AArch64Subtarget.h
  llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
  llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/arm64-atomic-128.ll
  llvm/test/CodeGen/AArch64/GlobalISel/v8.4-atomic-128.ll
  llvm/test/CodeGen/AArch64/atomic-ops-lse.ll
  llvm/test/CodeGen/AArch64/v8.4-atomic-128.ll

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