[all-commits] [llvm/llvm-project] ff79d7: InstCombine: Apply demanded mask at recursion limi...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ff79d7d1bf0415e52ad542b059c55f0e92b3bad6
      https://github.com/llvm/llvm-project/commit/ff79d7d1bf0415e52ad542b059c55f0e92b3bad6
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-01-27 (Tue, 27 Jan 2026)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
    M llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll

  Log Message:
  -----------
  InstCombine: Apply demanded mask at recursion limit in SimplifyDemandedFPClass (#178157)

This fixes missed flag inference in some cases, due to not inferring
no-nan result implies no-nan source. Also start treating explicit
nofpclass
attributes as a leaf value, like a constant or argument.



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