[all-commits] [llvm/llvm-project] 660b74: [DAG] Support store merging of vector constant stores

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 660b740e4b3c4b23dfba36940ae0fe2ad41bfedf
      https://github.com/llvm/llvm-project/commit/660b740e4b3c4b23dfba36940ae0fe2ad41bfedf
  Author: Philip Reames <preames at rivosinc.com>
  Date:   2023-08-02 (Wed, 02 Aug 2023)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/RISCV/rvv/memset-inline.ll
    M llvm/test/CodeGen/X86/MergeConsecutiveStores.ll
    M llvm/test/CodeGen/X86/avx512-mask-op.ll

  Log Message:
  -----------
  [DAG] Support store merging of vector constant stores

Ran across this when making a change to RISCV memset lowering. Seems very odd that manually merging a store into a vector prevents it from being further merged.

Differential Revision: https://reviews.llvm.org/D156349