[Bug rtl-optimization/98863] WRF with LTO consumes a lot of memory in split2 pass

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98863

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |jamborm at gcc dot gnu.org
   Last reconfirmed|                            |2021-01-28
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
We have an ltrans that needs > 1000s to compile and has a memory hog here:

1034s: current pass = gcse2 (306)
1034s: current pass = split2 (307)
{'ltrans': {'memory': 1.8760414123535156, 'cpu': 6.25}}
{'ltrans': {'memory': 3.2761878967285156, 'cpu': 6.25}}
{'ltrans': {'memory': 6.182369232177734, 'cpu': 6.25}}
{'ltrans': {'memory': 9.13412094116211, 'cpu': 6.25}}
{'ltrans': {'memory': 12.164928436279297, 'cpu': 6.25}}
{'ltrans': {'memory': 15.184154510498047, 'cpu': 6.25}}
{'ltrans': {'memory': 18.196331024169922, 'cpu': 6.25}}
{'ltrans': {'memory': 21.150096893310547, 'cpu': 6.25}}
{'ltrans': {'memory': 21.467578887939453, 'cpu': 6.24375}}
{'ltrans': {'memory': 21.467578887939453, 'cpu': 6.25}}
{'ltrans': {'memory': 21.468082427978516, 'cpu': 6.25}}
1045s: current pass = ree (308)