[all-commits] [llvm/llvm-project] 79e7b7: [AMDGPU] Adapt new lowering sequence for `fdiv16`

[Shilei Tian via All-commits]

  Branch: refs/heads/users/shiltian/fp16-correctly-rounded-sequence
  Home:   https://github.com/llvm/llvm-project
  Commit: 79e7b78df97966323c5a75ad072c4bcc2d914504
      https://github.com/llvm/llvm-project/commit/79e7b78df97966323c5a75ad072c4bcc2d914504
  Author: Shilei Tian <i at tianshilei.me>
  Date:   2024-09-27 (Fri, 27 Sep 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/frem.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-fdiv.mir
    M llvm/test/CodeGen/AMDGPU/fdiv.f16.ll
    M llvm/test/CodeGen/AMDGPU/fold-int-pow2-with-fmul-or-fdiv.ll
    M llvm/test/CodeGen/AMDGPU/frem.ll

  Log Message:
  -----------
  [AMDGPU] Adapt new lowering sequence for `fdiv16`

The current lowering of fdiv16 can generate incorrectly rounded result in some
cases.

Fixes SWDEV-47760.



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