[all-commits] [llvm/llvm-project] 0a8341: [RISCV] Avoid VMNOT by swapping VMERGE operands fo...

[Piotr Fusik via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0a8341fdb2f574019fb6cf99e207754e962dc81d
      https://github.com/llvm/llvm-project/commit/0a8341fdb2f574019fb6cf99e207754e962dc81d
  Author: Piotr Fusik <p.fusik at samsung.com>
  Date:   2025-02-20 (Thu, 20 Feb 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/mask-exts-not.ll

  Log Message:
  -----------
  [RISCV] Avoid VMNOT by swapping VMERGE operands for mask extensions (#126751)

Fold:

    (select (not m),  1, 0) -> (select m, 0,  1)
    (select (not m), -1, 0) -> (select m, 0, -1)



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