[all-commits] [llvm/llvm-project] 986cdd: [VPlan] Move EVL-based transforms to VPlanEVLTrans...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 986cdd8618e3e105bde1d52e7d8888325a7c87b1
      https://github.com/llvm/llvm-project/commit/986cdd8618e3e105bde1d52e7d8888325a7c87b1
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-07-17 (Fri, 17 Jul 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/CMakeLists.txt
    A llvm/lib/Transforms/Vectorize/VPlanEVLTailFolding.cpp
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/lib/Transforms/Vectorize/VPlanUtils.cpp
    M llvm/lib/Transforms/Vectorize/VPlanUtils.h

  Log Message:
  -----------
  [VPlan] Move EVL-based transforms to VPlanEVLTransforms.cpp (NFC) (#209883)

VPlanTransforms.cpp has become quite big and is one of the top 20 most
expensive files in terms of compile-time.


https://llvm-compile-time-tracker.com/compare_clang.php?from=b8ba3c2b72cb53268129bbecfeb4ba7ec5b8d831&to=96a722a0ace661626d071166635728def97f6820&stat=instructions%3Au

Split off the mostly self-contained EVL related transforms and move them
to a new VPlanEVLTransforms.cpp.

This moves simplifyKnownEVL, optimizeEVLMasks, addExplicitVectorLength,
convertToVariableLengthStep and convertEVLExitCond together with their
EVL-specific static helpers.

Shared helpers used by the moved code (isDeadRecipe,
collectUsersRecursively, recursivelyDeleteDeadRecipes,
getOpcodeOrIntrinsicID and tryToFoldLiveIns, pullOutPermutations) are
promoted to vputils.

PR: https://github.com/llvm/llvm-project/pull/209883



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