How to assign proper static_pass_number and recalculate other ones?

[Jeff Law]

On 10/01/2015 02:47 AM, Konstantin Vladimirov wrote:
> Hi,
>
> I am creating my own RTL pass inside private backend (GCC 5.2.0) and I
> want to register it via register_pass call from override_options hook,
> to not interfere with platform-independent GCC code.
>
>    register_pass (new my_cool_rtl_pass (g, "my_cool_pass"),
>                   PASS_POS_INSERT_AFTER, "sched1", 1);
>
> Everything just fine except the number of pass to print a dump file
> name is assigned the very last one (about 280), whereas pass itself
> should go immediately after sched1, so I want it to have static number
> 234 and dump file name as test.c.234.my_cool_pass. Now it runs after
> sched1 correctly, but have large number and visually goes in dump-all
> list at the end.
>
> Can I inside pass manager update all pass numbers after pass insertion
> to preserve visible dump order the same as run order?
David probably knows best what's currently possible with dump numbers in 
the pass manager.  He's on PTO this week.

ISTM that whatever we're currently doing that if a pass is inserted by a 
plug-in that pass #s ought to auto-magically update themselves.

jeff