[llvm] [LoopInterchange] Constrain LI within supported loop nest depth (PR #118656)

[Madhur Amilkanthwar via llvm-commits]

madhur13490 wrote:

> > 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.
> 
> Would be good to know how much compile time reduction for LLVM test-suite you could achieve with this patch?

Sure, let me rerun again with compile-time-tracker.


https://github.com/llvm/llvm-project/pull/118656