[all-commits] [llvm/llvm-project] bd8fe9: [VPlan] Mov licm to end of VPlan optimizations.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bd8fe9972e3f17776e4e05e69e13ab8271d34132
      https://github.com/llvm/llvm-project/commit/bd8fe9972e3f17776e4e05e69e13ab8271d34132
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-09-21 (Sat, 21 Sep 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    A llvm/test/Transforms/LoopVectorize/invariant-replicate-region.ll

  Log Message:
  -----------
  [VPlan] Mov licm to end of VPlan optimizations.

This moves licm after expanding replicate regions. This fixes a crash
when trying to hoist a predicated VPReplicateRecipes which later get
expanded to replicate regions.

Hoisting replicate regions out was not intended (see the discussion and
at the review and comment on shallow traversal in licm()).

Fixes https://github.com/llvm/llvm-project/issues/109510.



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