[all-commits] [llvm/llvm-project] 98117f: [VP] Add splitting for VP_STRIDED_STORE and VP_STR...

[Lorenzo Albano via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 98117fe2080bc1c419587189369de77afe0850f6
      https://github.com/llvm/llvm-project/commit/98117fe2080bc1c419587189369de77afe0850f6
  Author: Lorenzo Albano <loralb at posteo.net>
  Date:   2022-08-19 (Fri, 19 Aug 2022)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-strided-vpload.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-strided-vpstore.ll
    M llvm/test/CodeGen/RISCV/rvv/strided-vpload.ll
    M llvm/test/CodeGen/RISCV/rvv/strided-vpstore.ll

  Log Message:
  -----------
  [VP] Add splitting for VP_STRIDED_STORE and VP_STRIDED_LOAD

Following the comment's thread of D117235, I added checks for the widening + splitting case, which also causes a split with one of the resulting vectors to be empty. Due to the same issues described in that same thread, the `fixed-vectors-strided-store.ll` test is missing the widening + splitting case, while the same case in the `strided-vpload.ll` test requires to manually split the loaded vector.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D121784