[Bug 94744] Merge similar if-statements

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94744

--- Comment #2 from Timothy Arceri <t_arceri at yahoo.com.au> ---
(In reply to Eero Tamminen from comment #1)
> > Existing optimization passes should turn this into a pair of bcsel instructions.
> 
> Ian, is this already done or do you have patches for it?

This is done however i965 doesn't make use of it. If you pass a non-zero limit
to nir_opt_peephole_select() (i965 currently has a limit of zero, all other nir
drivers seem to pass a value) these if-statments should get turned into bcsel.

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