[all-commits] [llvm/llvm-project] 774b45: [Analysis][RISCV] More accurately estimate the cos...

[Ryan Buchner via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 774b4527fd60dc5ef7ed6539a8f2e6fe100e337b
      https://github.com/llvm/llvm-project/commit/774b4527fd60dc5ef7ed6539a8f2e6fe100e337b
  Author: Ryan Buchner <rbuchner at qti.qualcomm.com>
  Date:   2026-09-25 (Fri, 25 Sep 2026)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/CodeGen/BasicTTIImpl.h
    M llvm/lib/Target/RISCV/RISCVProcessors.td
    M llvm/lib/Target/RISCV/RISCVSubtarget.h
    M llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/RISCV/vp-intrinsics.ll

  Log Message:
  -----------
  [Analysis][RISCV] More accurately estimate the cost of strided vector loads (#175135)

For small constant strides, attempt to predict the amount of coalescing
that will be done by the target machine to give a better cost estimate.

Currently, strided loads/stores are costed as having a cost of 1 per
element (i.e. being equivalent to scalar loads/stores).

---------

Co-authored-by: Luke Lau <luke_lau at icloud.com>



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