https://bugs.freedesktop.org/show_bug.cgi?id=84977
--- Comment #1 from David Heidelberger (okias) david.heidelberger@ixit.cz --- Created attachment 107809 --> https://bugs.freedesktop.org/attachment.cgi?id=107809&action=edit r300_regalloc.txt
Also, problematic swizzle can be seen on instruction 27: in diff wx -> wz.