[all-commits] [llvm/llvm-project] f69ac9: [LV] Support widened induction variables in epilog...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f69ac9a22dca54feaa1234dd12a4604a68c979de
      https://github.com/llvm/llvm-project/commit/f69ac9a22dca54feaa1234dd12a4604a68c979de
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2022-12-21 (Wed, 21 Dec 2022)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/test/Transforms/LoopVectorize/AArch64/epilog-vectorization-widen-inductions.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-epilog-vect.ll
    M llvm/test/Transforms/LoopVectorize/X86/conversion-cost.ll
    M llvm/test/Transforms/LoopVectorize/X86/epilog-vectorization-inductions.ll
    M llvm/test/Transforms/LoopVectorize/X86/gather_scatter.ll
    M llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization-limitations.ll
    M llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization.ll

  Log Message:
  -----------
  [LV] Support widened induction variables in epilogue vectorization.

Code generation now uses the start VPValue of induction recipes.

This makes it possible to adjust the start value of the epilogue
vector loop to use the 'resume' value of the main vector loop.

Fixes #59459.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D92132