[all-commits] [llvm/llvm-project] 1bfd44: [DAGCombiner] Fold and/or of NaN SETCC (#135645)

[Alex MacLean via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1bfd44462886b167f0d82e44e6a9856a830c1f8b
      https://github.com/llvm/llvm-project/commit/1bfd44462886b167f0d82e44e6a9856a830c1f8b
  Author: Alex MacLean <amaclean at nvidia.com>
  Date:   2025-04-16 (Wed, 16 Apr 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    A llvm/test/CodeGen/NVPTX/and-or-setcc.ll
    A llvm/test/CodeGen/X86/and-or-setcc.ll

  Log Message:
  -----------
  [DAGCombiner] Fold and/or of NaN SETCC (#135645)

Fold an AND or OR of two NaN SETCC nodes into a single SETCC where
possible. This optimization already exists in InstCombine but adding in
here as well can allow for additional folding if more logical operations
are exposed.



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