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From: "hubicka at kam dot mff.cuni.cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/102943] [12 Regression] Jump threader
 compile-time hog with 521.wrf_r
Date: Thu, 17 Mar 2022 14:18:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102943

--- Comment #50 from hubicka at kam dot mff.cuni.cz ---
> It helps quite a bit, the worst case is now
>=20
>  tree VRP                           :   5.14 (  7%)   0.02 (  3%)   5.15 =
(  7%)
>    2
> 9M (  3%)
>  backwards jump threading           :   4.05 (  6%)   0.00 (  0%)   4.06 =
(  6%)
>  222
> 0k (  0%)
>=20
> overall the patch reduces compile time from 766s to 749 (parallel compile,
> serial LTO, release checking).  So IMHO definitely worth it if you are ha=
ppy
> with it.
This looks really promising.  Does it also solve the situation with
--param param_inline_functions_called_once_insns=3D1000000

I will benchmark how copmile time now behaves with respect increasing
this bound.

Honza=