[all-commits] [llvm/llvm-project] 30086b: [RISCV] Remove RISCVVectorPeephole::tryToReduceVL ...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 30086bc246ebf3402856805977ace06951a0f1f8
      https://github.com/llvm/llvm-project/commit/30086bc246ebf3402856805977ace06951a0f1f8
  Author: Luke Lau <luke at igalia.com>
  Date:   2026-03-05 (Thu, 05 Mar 2026)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVVectorPeephole.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-insert-subvector-shuffle.ll
    R llvm/test/CodeGen/RISCV/rvv/reduce-vl-peephole.ll
    R llvm/test/CodeGen/RISCV/rvv/reduce-vl-peephole.mir
    M llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-to-vmv.mir
    M llvm/test/CodeGen/RISCV/rvv/vmv.v.v-peephole.mir

  Log Message:
  -----------
  [RISCV] Remove RISCVVectorPeephole::tryToReduceVL (#184297)

Now that RISCVVLOptimizer has been extended to handle the remaining
cases tryToReduceVL handles, we can remove tryToReduceVL to keep all the
reduction logic in one place.

Intended to be NFC but it looks like in
test/CodeGen/RISCV/rvv/fixed-vectors-insert-subvector-shuffle.ll we were
previously reducing the vl of a volatile load in
insert_subvector_dag_loop, which RISCVVLOptimizer knows to avoid.

On llvm-test-suite and SPEC CPU 2017 -march=rva23u64 -O3 there are no
changes with this patch.



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