[Bug 84977] r300/compiler: register allocation pass generate invalid swizzle for r300/r400

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84977

--- Comment #3 from Tom Stellard <tstellar at gmail.com> ---
(In reply to David Heidelberger (okias) from comment #1)
> Created attachment 107809 [details]
> r300_regalloc.txt
> 
> Also, problematic swizzle can be seen on instruction 27: in diff wx -> wz.

.wz is a legal swizzle according to the native_swizzles table.  Can you add
printfs to lookup_native_swizzle to see why it is not being treated as a legal
swizzle?

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