[all-commits] [llvm/llvm-project] a80053: [LAA] Remove loop-invariant check added in 234cc40...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a80053322b765eec93951e21db490c55521da2d8
      https://github.com/llvm/llvm-project/commit/a80053322b765eec93951e21db490c55521da2d8
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-08-26 (Mon, 26 Aug 2024)

  Changed paths:
    M llvm/lib/Analysis/LoopAccessAnalysis.cpp
    M llvm/test/Analysis/LoopAccessAnalysis/depend_diff_types.ll
    M llvm/test/Analysis/LoopAccessAnalysis/non-constant-strides-backward.ll
    M llvm/test/Transforms/LoopVectorize/global_alias.ll

  Log Message:
  -----------
  [LAA] Remove loop-invariant check added in 234cc40adc61.

234cc40adc61 introduced a loop-invariance check to limit the
compile-time impact of the newly added checks.

This patch removes the restriction and avoids extra compile-time impact
by sinking the check to exits where we would return an unknown
dependence. This notably reduces the amount the extra checks are
executed while not missing out on any improvements from them.

https://llvm-compile-time-tracker.com/compare.php?from=33e7cd6ff23f6c904314d17c68dc58168fd32d09&to=7c55e66d4f31ce8262b90c119a8e84e1f9515ff1&stat=instructions:u



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