[all-commits] [llvm/llvm-project] 796d2e: [DAG] visitAND - attempt to fold (and buildvector(...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 796d2ec4165a063ab9d1512a769978313dc18bc7
      https://github.com/llvm/llvm-project/commit/796d2ec4165a063ab9d1512a769978313dc18bc7
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2026-04-27 (Mon, 27 Apr 2026)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AArch64/sve-streaming-mode-fixed-length-masked-load.ll
    M llvm/test/CodeGen/LoongArch/lasx/vxi1-masks.ll
    M llvm/test/CodeGen/NVPTX/i16x2-instructions.ll
    M llvm/test/CodeGen/PowerPC/masked-sdiv.ll
    M llvm/test/CodeGen/PowerPC/masked-srem.ll
    M llvm/test/CodeGen/PowerPC/masked-udiv.ll
    M llvm/test/CodeGen/PowerPC/masked-urem.ll
    M llvm/test/CodeGen/RISCV/rvv/incorrect-extract-subvector-combine.ll
    M llvm/test/CodeGen/X86/dag-topological-sort.ll
    M llvm/test/CodeGen/X86/pr134602.ll

  Log Message:
  -----------
  [DAG] visitAND - attempt to fold (and buildvector(), buildvector()) -> buildvector() (#193987)

See if we can fold all elements of an AND of buildvectors: AND(-1,X) -> X, AND(0,X) -> 0, etc.

Companion to ##183032



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