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From: "rguenth at gcc dot gnu.org" <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: Tue, 02 Nov 2021 07:25:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102943

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[12 Regression] VRP         |[12 Regression] Jump
                   |threader compile-time hog   |threader compile-time hog
                   |with 521.wrf_r              |with 521.wrf_r

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
The 'tree VRP threader' instances are now gone (well, obviously..).  There's
now

 backwards jump threading           :  15.98 ( 13%)=20
 TOTAL                              : 120.33=20=20=20=20=20

 backwards jump threading           :  41.23 ( 33%)=20
 TOTAL                              : 125.43=20=20=20=20=20=20=20=20=20

 backwards jump threading           :  89.97 ( 19%)=20=20
 TOTAL                              : 473.55=20=20=20=20=20

in the three biggest LTRANS units (all others are <10s compile time).  It m=
ight
be that the VRP threading opportunities are now simply taken by backwards
threader instances.

So, re-confirmed.=