[all-commits] [llvm/llvm-project] 252414: [RISCV] Add DAG combine for (vmv_s_x_vl (undef) (v...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2524146b256002bfc70b38008425291f5b3dd08c
      https://github.com/llvm/llvm-project/commit/2524146b256002bfc70b38008425291f5b3dd08c
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-04-29 (Mon, 29 Apr 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vector-i8-index-cornercase.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-int-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vreductions-int-vp.ll

  Log Message:
  -----------
  [RISCV] Add DAG combine for (vmv_s_x_vl (undef) (vmv_x_s X). (#90524)

We can use the original vector as long as the type of X matches the
result type of the vmv_s_x_vl.



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