[PATCH] D130895: Make VL choosing for a splat constant based on its users

[Anton Sidorenko via Phabricator via llvm-commits]

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When translating splat constants to VMV, X0 is used as default VL.
It may cause redundant changing of AVL to VLMAX even if it could be
smaller. For optimal VL we can use common VL of splat users if it
exists.

PR#55615


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130895

Files:
  llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
  llvm/test/CodeGen/RISCV/rvv/pr55615.ll
  llvm/test/CodeGen/RISCV/rvv/vsetvli-insert-crossbb.ll

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