[all-commits] [llvm/llvm-project] 458ed5: [TargetLowering][RISCV] Prevent scalarization of f...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 458ed5fcc3626d84fe13db1048dc6742a60f7624
      https://github.com/llvm/llvm-project/commit/458ed5fcc3626d84fe13db1048dc6742a60f7624
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-10-21 (Thu, 21 Oct 2021)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-bswap.ll

  Log Message:
  -----------
  [TargetLowering][RISCV] Prevent scalarization of fixed vector bswap.

It's better to do the ands, shifts, ors in the vector domain than
to scalarize it and do those operations on each element.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D112248