3 Aug
2012
3 Aug
'12
12:49 p.m.
I have noticed gcc has a preference for generating UXTB instructions when an AND with #255 would do the same thing. This is bad, because on A9 UXTB has two cycles latency compared to one cycle for AND. On A8 both instructions have one cycle latency.
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Mans Rullgard / mru