[all-commits] [llvm/llvm-project] 15fade: [RISCV] Add cost for @llvm.experimental.vp.splat (...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 15fadeb2aa8b9f27a5a45f15832e73ef79cfe407
      https://github.com/llvm/llvm-project/commit/15fadeb2aa8b9f27a5a45f15832e73ef79cfe407
  Author: Luke Lau <luke at igalia.com>
  Date:   2024-11-25 (Mon, 25 Nov 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll

  Log Message:
  -----------
  [RISCV] Add cost for @llvm.experimental.vp.splat (#117313)

This is split off from #115274. There doesn't seem to be an easy way to
share this with getShuffleCost since that requires passing in a real
insert_element operand to get it to recognise it's a scalar splat.

For i1 vectors we can't currently lower them so it returns an invalid
cost.

---------

Co-authored-by: Shih-Po Hung <shihpo.hung at sifive.com>



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