[all-commits] [llvm/llvm-project] b1ff20: [LV] Enable scalable vectorization by default for ...

[sdesmalen-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b1ff20fd35431dc2b1a9a0f8353f52b26b579dc4
      https://github.com/llvm/llvm-project/commit/b1ff20fd35431dc2b1a9a0f8353f52b26b579dc4
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2021-12-20 (Mon, 20 Dec 2021)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/include/llvm/Transforms/Vectorize/LoopVectorizationLegality.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
    M llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/eliminate-tail-predication.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/masked-op-cost.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-alloca.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-call.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-predicate-instruction.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-reductions.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-strict-fadd.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-vectorization-cost-tuning.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-vectorization.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-vf-hint.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-basic-vec.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-cond-inv-loads.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-epilog-vect.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-extract-last-veclane.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-gather-scatter.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-illegal-type.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-inductions-unusual-types.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-inductions.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-inv-loads.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-inv-store.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-large-strides.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-masked-loadstore.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-select-cmp.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-strict-fadd-cost.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-tail-folding.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-type-conv.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-vector-reverse-mask4.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-vector-reverse.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-extractvalue.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-gep.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-phi.ll
    M llvm/test/Transforms/LoopVectorize/metadata-width.ll

  Log Message:
  -----------
  [LV] Enable scalable vectorization by default for SVE cores.

The availability of SVE should be sufficient to enable scalable
auto-vectorization.

This patch adds a new TTI interface to query the target what style of
vectorization it wants when scalable vectors are available. For other
targets than AArch64, this currently defaults to 'FixedWidthOnly'.

Differential Revision: https://reviews.llvm.org/D115651