[Bug 91857] Mesa 10.6.3 linker is slow

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91857

--- Comment #14 from Tapani Pälli <lemody at gmail.com> ---
By bisecting and jumping to some old commits I believe there are multiple small
changes (from new features) affecting the total. There are several things
taking the run from 30 to ~40secs but the biggest change is caused by commit
0ecdf04, this doubles the total time from ~40 secs to ~80 secs.

Some times from my system:

0ecdf04 (83 secs)
1370fde (42 secs)
22ee7ee (30 secs)

commit causing the biggest hop is:
--- 8< ---
commit 0ecdf04060518149e99a098caf4f6025fd6482a4
Author: Connor Abbott <cwabbott0 at gmail.com>
Date:   Thu Jun 25 16:22:26 2015 -0700

    i965/fs: emit constants only once

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