[all-commits] [llvm/llvm-project] 9132a1: [AArch64] Mark FMOVvXfY_ns as rematerializable, cheap

Guy David via All-commits all-commits at lists.llvm.org
Sun Nov 23 08:13:00 PST 2025


  Branch: refs/heads/users/guy-david/aarch64-fmov-vec-imm-rematerializable
  Home:   https://github.com/llvm/llvm-project
  Commit: 9132a1bf33d48666ddacd82a2a1bda22c1548043
      https://github.com/llvm/llvm-project/commit/9132a1bf33d48666ddacd82a2a1bda22c1548043
  Author: Guy David <guyda96 at gmail.com>
  Date:   2025-11-23 (Sun, 23 Nov 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    A llvm/test/CodeGen/AArch64/remat-fmov-vector-imm.mir

  Log Message:
  -----------
  [AArch64] Mark FMOVvXfY_ns as rematerializable, cheap

Otherwise, the register allocator may spill and reload constants that
can be rematerialized with a single instruction.



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