[all-commits] [llvm/llvm-project] c28b1a: [LegalizeTypes][RISCV] Use SPLAT_VECTOR_PARTS to l...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c28b1a19aadff97b369889aee084073a181cfda8
      https://github.com/llvm/llvm-project/commit/c28b1a19aadff97b369889aee084073a181cfda8
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-09-04 (Wed, 04 Sep 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-llrint.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-masked-load-int.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-masked-store-int.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vadd-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vand-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vmax-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vmaxu-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vmin-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vminu-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vsadd-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vsaddu-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vssub-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vssubu-vp.ll
    M llvm/test/CodeGen/RISCV/srem-seteq-illegal-types.ll

  Log Message:
  -----------
  [LegalizeTypes][RISCV] Use SPLAT_VECTOR_PARTS to legalize splat BUILD_VECTOR (#107290)

If the element type needs to be expanded, we can use SPLAT_VECTOR_PARTS
if the target supports it.

There's already a DAGCombine to turn BUILD_VECTOR into SPLAT_VECTOR if
the target makes SPLAT_VECTOR legal, but it doesn't fire for vectors
that need to be split.



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