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Vasily Khoruzhick authored
Writes to regs that are never read will confuse regalloc since they are never live and don't conflict with any regs. Kill them to prevent overwriting another live reg. Reviewed-by: Andreas Baierl <ichgeh@imkreisrum.de> Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Tested-by: Marge Bot <mesa/mesa!4125> Part-of: <mesa/mesa!4125>
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