[all-commits] [llvm/llvm-project] d15f3e: [LoopInterchange] Constrain LI within supported lo...

[Madhur Amilkanthwar via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d15f3e828d3d3335aa9b92b9013a590b71e56b92
      https://github.com/llvm/llvm-project/commit/d15f3e828d3d3335aa9b92b9013a590b71e56b92
  Author: Madhur Amilkanthwar <madhura at nvidia.com>
  Date:   2025-01-23 (Thu, 23 Jan 2025)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LoopInterchange.cpp
    M llvm/test/Transforms/LoopInterchange/bail-out-one-loop.ll
    A llvm/test/Transforms/LoopInterchange/deep-loop-nest.ll

  Log Message:
  -----------
  [LoopInterchange] Constrain LI within supported loop nest depth (#118656)

This patch is an extension to #115128.

After profiling LLVM test-suite, I see a lot of loop nest of depth more
than `MaxLoopNestDepth` which is 10. Early exit for them would save
compile-time as it would avoid computing DependenceInfo and CacheCost.

Please see 'bound-max-depth' branch on compile-time-tracker.



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