[all-commits] [llvm/llvm-project] 264e57: AMDGPU: Handle new atomicrmw metadata for fadd case

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/amdgpu-atomic-metadata-fadd-case
  Home:   https://github.com/llvm/llvm-project
  Commit: 264e57bd73e343d6fa4d788215df28dee761d05e
      https://github.com/llvm/llvm-project/commit/264e57bd73e343d6fa4d788215df28dee761d05e
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-07-12 (Fri, 12 Jul 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f32.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f64.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fp-atomics-gfx940.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fp64-atomics-gfx90a.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/global-atomic-fadd.f64.ll
    M llvm/test/CodeGen/AMDGPU/atomicrmw-expand.ll
    M llvm/test/CodeGen/AMDGPU/atomics-hw-remarks-gfx90a.ll
    M llvm/test/CodeGen/AMDGPU/buffer-fat-pointer-atomicrmw-fadd.ll
    M llvm/test/CodeGen/AMDGPU/flat-atomic-fadd.f32.ll
    M llvm/test/CodeGen/AMDGPU/flat-atomic-fadd.f64.ll
    M llvm/test/CodeGen/AMDGPU/flat-atomicrmw-fadd.ll
    M llvm/test/CodeGen/AMDGPU/flat-atomicrmw-fsub.ll
    M llvm/test/CodeGen/AMDGPU/fp-atomics-gfx940.ll
    M llvm/test/CodeGen/AMDGPU/fp64-atomics-gfx90a.ll
    M llvm/test/CodeGen/AMDGPU/global-atomic-fadd.f32-no-rtn.ll
    M llvm/test/CodeGen/AMDGPU/global-atomic-fadd.f32-rtn.ll
    M llvm/test/CodeGen/AMDGPU/global-atomic-fadd.f64.ll
    M llvm/test/CodeGen/AMDGPU/global-atomicrmw-fadd-wrong-subtarget.ll
    M llvm/test/CodeGen/AMDGPU/global-atomicrmw-fadd.ll
    M llvm/test/CodeGen/AMDGPU/global-atomicrmw-fsub.ll
    M llvm/test/CodeGen/AMDGPU/global-atomics-fp-wrong-subtarget.ll
    M llvm/test/CodeGen/AMDGPU/global_atomic_optimizer_fp_rtn.ll
    M llvm/test/CodeGen/AMDGPU/global_atomics_optimizer_fp_no_rtn.ll
    M llvm/test/CodeGen/AMDGPU/global_atomics_scan_fadd.ll
    M llvm/test/CodeGen/AMDGPU/global_atomics_scan_fsub.ll
    M llvm/test/CodeGen/AMDGPU/insert_waitcnt_for_precise_memory.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f32-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f32-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f64-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-f64-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-i128.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fadd-flat-specialization.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-rmw-fadd.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-simplify-cfg-CAS-block.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2bf16-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2f16-agent.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomic-v2f16-system.ll
    M llvm/test/Transforms/AtomicExpand/AMDGPU/expand-atomicrmw-fp-vector.ll

  Log Message:
  -----------
  AMDGPU: Handle new atomicrmw metadata for fadd case

This is the most complex atomicrmw support case. Note we don't have
accurate remarks for all of the cases, which I'm planning on fixing
in a later change with more precise wording.

Continue respecting amdgpu-unsafe-fp-atomics until it's eventual removal.
Also seems to fix a few cases not interpreting amdgpu-unsafe-fp-atomics
appropriately aggressively.



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