[all-commits] [llvm/llvm-project] 1246ce: DAG: Handle lowering unordered compare with inf

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/dag-lower-unordered-compare-with-inf
  Home:   https://github.com/llvm/llvm-project
  Commit: 1246ce40eebc1ba1c39525f686ec15e784d28232
      https://github.com/llvm/llvm-project/commit/1246ce40eebc1ba1c39525f686ec15e784d28232
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-07-26 (Fri, 26 Jul 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/CodeGenCommonISel.h
    M llvm/lib/CodeGen/CodeGenCommonISel.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AMDGPU/fp-classify.ll
    M llvm/test/CodeGen/AMDGPU/llvm.is.fpclass.bf16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.is.fpclass.f16.ll
    M llvm/test/CodeGen/PowerPC/fp-classify.ll
    M llvm/test/CodeGen/PowerPC/is_fpclass.ll
    M llvm/test/CodeGen/X86/is_fpclass-fp80.ll
    M llvm/test/CodeGen/X86/is_fpclass.ll

  Log Message:
  -----------
  DAG: Handle lowering unordered compare with inf

Try to take advantage of the nan check behavior of fcmp.
x86_64 looks better, x86_32 looks worse.



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