[all-commits] [llvm/llvm-project] c103bb: [LV] Consider whether vscale is a known power of t...

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c103bbc836691d637c249ca19d38bdb0034437c6
      https://github.com/llvm/llvm-project/commit/c103bbc836691d637c249ca19d38bdb0034437c6
  Author: Philip Reames <preames at rivosinc.com>
  Date:   2025-06-20 (Fri, 20 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/tail-folding-styles.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/inloop-reduction.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/type-info-cache-evl-crash.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-call-intrinsics.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-cast-intrinsics.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-cond-reduction.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-fixed-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-inloop-reduction.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-interleave.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-intermediate-store.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-iv32.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-known-no-overflow.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-masked-loadstore.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-ordered-reduction.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-reduction.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-uniform-store.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-vp-intrinsics.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vplan-vp-select-intrinsics.ll
    A llvm/test/Transforms/LoopVectorize/scalable-predication.ll

  Log Message:
  -----------
  [LV] Consider whether vscale is a known power of two for iteration check (#144963)

Going mostly by the comment here - but it says "vscale is not
necessarily a power-of-2". Both in tree targets have vscale as a power
of two, and we have an existing TTI hook for that.



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