[all-commits] [llvm/llvm-project] d3e7c4: AMDGPU: Use real copysign in fast pow (#97152)

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d3e7c4ce7a3d7f08cea02cba8f34c590a349688b
      https://github.com/llvm/llvm-project/commit/d3e7c4ce7a3d7f08cea02cba8f34c590a349688b
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-07-01 (Mon, 01 Jul 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULibCalls.cpp
    M llvm/test/CodeGen/AMDGPU/amdgpu-simplify-libcall-pow.ll
    M llvm/test/CodeGen/AMDGPU/amdgpu-simplify-libcall-pown.ll
    M llvm/test/CodeGen/AMDGPU/simplify-libcalls.ll

  Log Message:
  -----------
  AMDGPU: Use real copysign in fast pow (#97152)

Previously this would introduce some codegen regressions, but
those have been avoided by simplifying demanded bits on copysign
operations.



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