[Bug 109081] [bisected] [HSW] Regression in clipping.user_defined.clip_* vulkancts tests

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109081

--- Comment #6 from Ian Romanick <idr at freedesktop.org> ---
(In reply to Timothy Arceri from comment #5)
> (In reply to Ian Romanick from comment #3)
> > I've submitted an MR for a possible fix for problem #2.
> > 
> > https://gitlab.freedesktop.org/mesa/mesa/merge_requests/26
> > 
> > I'm have an idea for problem #1, but I don't know that I'll get to it before
> > the new year.  Maybe Tim will beat me to it. ;)
> 
> The problem with peephole select is that we loose opportunities to apply the
> growing list of opts in nir_opt_if(). In this case we no longer recognise
> the pattern in opt_peel_loop_initial_if()

I suspected it was something like that.  I was planning to go through and beef
up the places that handle if-statements to also handle bcsel.  That doesn't
(conceptually) seem to hard.  What do you think?

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