[Bug tree-optimization/122843] [16 Regression] Excessive compile time with flags -O2 -fpeel-loops -march=znver3

[rguenther at suse dot de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122843

--- Comment #8 from rguenther at suse dot de <rguenther at suse dot de> ---
> Am 25.11.2025 um 19:22 schrieb pinskia at gcc dot gnu.org 
> <gcc-bugzi...@gcc.gnu.org>:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122843
> 
> --- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>> simplify a deeply nested XOR chain.  
> 
> Yes and which almost all cancel out, see PR 122845.

I suspect the recursion limit can actually backfire here, causing O(n*lilmit)
complexity to what should be overall O(n).

> 
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