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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - PhiMovesPass in register allocator broken"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90887#c23">Comment # 23</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - PhiMovesPass in register allocator broken"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90887">bug 90887</a>
from <span class="vcard"><a class="email" href="mailto:j-r@online.de" title="jr <j-r@online.de>"> <span class="fn">jr</span></a>
</span></b>
<pre>(In reply to Ilia Mirkin from <a href="show_bug.cgi?id=90887#c22">comment #22</a>)
<span class="quote">> (In reply to jr from <a href="show_bug.cgi?id=90887#c21">comment #21</a>)
> > Created <span class=""><a href="attachment.cgi?id=117077" name="attach_117077" title="Prototype of a more highlevel graph modification api">attachment 117077</a> <a href="attachment.cgi?id=117077&action=edit" title="Prototype of a more highlevel graph modification api">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=90887&attachment=117077'>[review]</a> [review] [review]
> > Prototype of a more highlevel graph modification api
> >
> > ...
>
> Hrm, I was about to (try to) push this out, but it doesn't seem to work. I
> made a few local adjustments, like
>
> RegAlloc::PhiMovesPass::isCriticalEdge(BasicBlock *b, BasicBlock *p)
> {
> return b->cfg.incidentCount() > 1 && p->cfg.outgoingCount() > 1;
> }
>
> ...
>
>
> where did BB:4 go? poof. not great :( this is with piglit's
> tests/shaders/ssa/fs-critical-edge.shader_test
>
> I guess I'll go with either your or my first patches. Want to get this fixed
> for Mesa 11, which is going to get branched off some time tomorrow.</span >
Sorry, most probably my prototype code is crap. I'll have an hour now to look
at it. I'll let you know if I find something. Otherwise I'm fine with your
first patch.</pre>
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