[all-commits] [llvm/llvm-project] 42429f: [RISCV] Simplify costShuffleViaVRegSplitting [nfc]...

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 42429fedf9198b4a6d7ec51251f6e2bfa1a8385e
      https://github.com/llvm/llvm-project/commit/42429fedf9198b4a6d7ec51251f6e2bfa1a8385e
  Author: Philip Reames <preames at rivosinc.com>
  Date:   2025-03-04 (Tue, 04 Mar 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp

  Log Message:
  -----------
  [RISCV] Simplify costShuffleViaVRegSplitting [nfc] (#129766)

This code goes to some length to cost the subvector extracts, but by
construction, all of the subvector extracts are subregister extracts
from a vector register group and thus have zero cost. As a result, none
of this code is needed.



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