[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 #4 from David Heidelberger (okias) <david.heidelberger at ixit.cz> ---
> > 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?

I made printf in lookup_native_swizzle originally.
I probably messed this. It's wz -> wx. (it fails for www after 1. w, same for
wzy, also fails after 1. w).

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