[Mesa-dev] [PATCH 2/2] nir: Lower ldexp to arithmetic.

[Kenneth Graunke]

On Tuesday, January 19, 2016 10:14:18 PM PST Kenneth Graunke wrote:
> This is a port of Matt's GLSL IR lowering pass to NIR.  It's required
> because we translate SPIR-V directly to NIR, bypassing GLSL IR.
> 
> I haven't introduced a lower_ldexp flag, as I believe all current NIR
> consumers would set the flag.  i965 wants this, vc4 doesn't implement
> this feature, and st_glsl_to_tgsi currently lowers ldexp
> unconditionally anyway.
> 
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>

NAK.  This code doesn't work.  I definitely have Piglit results with
columns of green, but apparently I my test suites got broken in some
bizarre way.  After a bunch of clean builds, it fails.

I'll send out a fixed version once I have one...
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