[Bug 103322] i965: dEQP-GLES31.functional.ssbo.layout.random.all_shared_buffer.23 takes 3m22s to compile
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Oct 18 06:22:41 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=103322
Kenneth Graunke <kenneth at whitecape.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|mattst88 at gmail.com |kenneth at whitecape.org
Status|NEW |ASSIGNED
--- Comment #2 from Kenneth Graunke <kenneth at whitecape.org> ---
Oh, I think there's actually a simple fix here.
The issue is that add_barrier_dep sets is_barrier = true, and walks backward to
the previous barrier, and forward to...the end of the program...because if
you're walking forward, you haven't set is_barrier on any future instructions
yet.
I think we just need to change to is_scheduling_barrier() instead, which means
moving some things to backend_instruction instead of fs_inst. (I have a vague
memory that Curro wanted us to do that in the first place...)
I've got a patch to do that, and it reduces the runtime to 3.6 seconds. The
test still passes, but I'll have to do real regression testing and clean it up
tomorrow.
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