[all-commits] [llvm/llvm-project] 86bf47: llvm-reduce: Add target-features-attr reduction

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/llvm-reduce/add-reduce-target-features-attr-reduction
  Home:   https://github.com/llvm/llvm-project
  Commit: 86bf478e77ba53aa64121eee71ea583d1472a65c
      https://github.com/llvm/llvm-project/commit/86bf478e77ba53aa64121eee71ea583d1472a65c
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-04-01 (Tue, 01 Apr 2025)

  Changed paths:
    A llvm/test/tools/llvm-reduce/reduce-target-features-attr.ll
    M llvm/tools/llvm-reduce/CMakeLists.txt
    M llvm/tools/llvm-reduce/DeltaManager.cpp
    M llvm/tools/llvm-reduce/DeltaPasses.def
    A llvm/tools/llvm-reduce/deltas/ReduceTargetFeaturesAttr.cpp
    A llvm/tools/llvm-reduce/deltas/ReduceTargetFeaturesAttr.h
    M llvm/utils/gn/secondary/llvm/tools/llvm-reduce/BUILD.gn

  Log Message:
  -----------
  llvm-reduce: Add target-features-attr reduction

Try to reduce individual subtarget features in the "target-features"
attribute. This attempts a textual removal of the fields in the string,
not a semantic removal. Typically there's a lot of redundant feature spam
in the feature list implied by the target-cpu (which I really wish clang
would stop emitting). If we could parse these out, we could easily drop
the fields without testing anything.



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