[all-commits] [llvm/llvm-project] ab21be: [AArch64][FastISel] Handle CRC32 intrinsics

[aengelke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ab21beaccc9d69339cc148151f1a4bec0c87a5bd
      https://github.com/llvm/llvm-project/commit/ab21beaccc9d69339cc148151f1a4bec0c87a5bd
  Author: Alexis Engelke <engelke at in.tum.de>
  Date:   2023-04-28 (Fri, 28 Apr 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64FastISel.cpp
    A llvm/test/CodeGen/AArch64/arm64-fast-isel-crc32.ll

  Log Message:
  -----------
  [AArch64][FastISel] Handle CRC32 intrinsics

With a similar reason as D148023; some applications make heavy use of
the CRC32 intrinsic (e.g., as part of a hash function) and therefore
benefit from avoiding frequent SelectionDAG fallbacks. In our
application, we get a 2% compile-time improvement.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D148917