[all-commits] [llvm/llvm-project] 26c3a8: AArch64: Use consistent atomicrmw expansion for FP...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 26c3a8404f1b3327a0982faeeaee94b08d1ee481
      https://github.com/llvm/llvm-project/commit/26c3a8404f1b3327a0982faeeaee94b08d1ee481
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-08-29 (Thu, 29 Aug 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/atomicrmw-fadd.ll
    M llvm/test/CodeGen/AArch64/atomicrmw-fmax.ll
    M llvm/test/CodeGen/AArch64/atomicrmw-fmin.ll
    M llvm/test/CodeGen/AArch64/atomicrmw-fsub.ll

  Log Message:
  -----------
  AArch64: Use consistent atomicrmw expansion for FP operations (#103702)

Use LLSC or cmpxchg in the same cases as for the unsupported
integer operations. This required some fixups to the LLSC
implementatation to deal with the fp128 case.

The comment about floating-point exceptions was wrong,
because floating-point exceptions are not really exceptions at all.



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