[all-commits] [llvm/llvm-project] 0d0bfa: [RISCV] Add test cases for vmerge peephole with vs...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0d0bfa8a14dc9061cea1699b933e27ba057c340b
      https://github.com/llvm/llvm-project/commit/0d0bfa8a14dc9061cea1699b933e27ba057c340b
  Author: Luke Lau <luke at igalia.com>
  Date:   2023-06-26 (Mon, 26 Jun 2023)

  Changed paths:
    M llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-masked-vops.ll
    M llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-vops.ll

  Log Message:
  -----------
  [RISCV] Add test cases for vmerge peephole with vslides

Currently vslide1{up,down}s can have vmerges folded into them, but not
vslide{up,down}s.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D153630


  Commit: 0e9384a6c6ca86e042a1ed75c5f22db7cf14f132
      https://github.com/llvm/llvm-project/commit/0e9384a6c6ca86e042a1ed75c5f22db7cf14f132
  Author: Luke Lau <luke at igalia.com>
  Date:   2023-06-26 (Mon, 26 Jun 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
    M llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-masked-vops.ll
    M llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-vops.ll

  Log Message:
  -----------
  [RISCV] Teach doPeepholeMaskedRVV to handle vslide{up,down}

We already handle vslide1{up,down}, so this extends it to vslide{up,down}.

This was unintentionally added in https://reviews.llvm.org/D150463 and
then removed in 37cfcfcef76bb615b941d7077ca81168bd7ad080, but unless I'm
missing something this should still be ok as the mask only controls what
destination elements are written to.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D153631


Compare: https://github.com/llvm/llvm-project/compare/d66ed10f8698...0e9384a6c6ca