[all-commits] [llvm/llvm-project] 09dd4d: DAG: Remove hasBitPreservingFPLogic

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 09dd4d870e192da73594b713bb201859e5a09efb
      https://github.com/llvm/llvm-project/commit/09dd4d870e192da73594b713bb201859e5a09efb
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2023-02-14 (Tue, 14 Feb 2023)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/AMDGPU/SIISelLowering.h
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/lib/Target/PowerPC/PPCISelLowering.h
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.h
    M llvm/lib/Target/SystemZ/SystemZISelLowering.h
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.h
    M llvm/test/CodeGen/AMDGPU/fneg.ll
    M llvm/test/CodeGen/PowerPC/fabs.ll
    M llvm/test/CodeGen/X86/avx512fp16-fp-logic.ll
    M llvm/test/CodeGen/X86/fp128-i128.ll

  Log Message:
  -----------
  DAG: Remove hasBitPreservingFPLogic

This doesn't make sense as an option. fneg and fabs are bit
preserving by definition. If a target has some fneg or fabs
instruction that are not bitpreserving it's incorrect to lower
fneg/fabs to use it.