[all-commits] [llvm/llvm-project] d03a1a: [ValueTracking] Compute knownbits from known fp cl...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d03a1a6e5838c7c2c0836d71507dfdf7840ade49
      https://github.com/llvm/llvm-project/commit/d03a1a6e5838c7c2c0836d71507dfdf7840ade49
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2024-05-14 (Tue, 14 May 2024)

  Changed paths:
    M llvm/include/llvm/IR/PatternMatch.h
    M llvm/lib/Analysis/ValueTracking.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
    M llvm/test/Transforms/InstCombine/known-bits.ll

  Log Message:
  -----------
  [ValueTracking] Compute knownbits from known fp classes (#86409)

This patch calculates knownbits from fp instructions/dominating fcmp
conditions. It will enable more optimizations with signbit idioms.



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