[all-commits] [llvm/llvm-project] ad58ea: [VPlan] Bail out before construction VPlan0 if Min...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ad58ea3ba8b9ab60a3b31316cb2010034f6257e3
      https://github.com/llvm/llvm-project/commit/ad58ea3ba8b9ab60a3b31316cb2010034f6257e3
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-05-27 (Tue, 27 May 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

  Log Message:
  -----------
  [VPlan] Bail out before construction VPlan0 if MinVF > MaxVF.

This reduces the cases where we need to create initial VPlans
unnecessarily after 567b3172da2d52f5df70a37f3de06b7000b25968.

buildVPlansWithVPRecipes is called with MinVF > MaxVF if the target does
not support scalable vectors.

Recovers some of the compile-time impact
http://llvm-compile-time-tracker.com/compare.php?from=3033f202f6707937cd28c2473479db134993f96f&to=1a0b9e5834f7fd4abf058864e656f8e26b7a26ff&stat=instructions:u



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