What’s the cost of an atomic increment on ARM?
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Replying to @chadaustin
IME, it’s expensive (at least on Cortex-A15+Cortex-A7 big.LITTLE).
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Replying to @pcwalton
Better or worse, relatively, than x86? How about A9? Struggling to find numbers on this. :/
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Replying to @chadaustin
A *lot* slower than x86. Dunno about A9.
11:27 AM - 23 Aug 2016
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