А вот про реордеринг обычных операций вокруг операций с

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А вот про реордеринг обычных операций вокруг операций с

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what about nearby ordinary reads and writes -- can those still be reordered around unoptimizable reads and writes? Today, there is no practical portable answer because C/C++ compiler implementations vary widely and aren't likely to converge anytime soon. For example, one interpretation of the C++ Standard holds that ordinary reads can move freely in either direction across a C/C++ volatile read or write, but that an ordinary write cannot move at all across a C/C++ volatile read or write -- which would make C/C++ volatile both less restrictive and more restrictive, respectively, than an ordered atomic. Some compiler vendors support that interpretation; others don't optimize across volatile reads or writes at all; and still others have their own preferred semantics.

#c++ #embedded #programming #russian

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10.09.2019

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Ilya Zviagin · Accepted Answer

Ilya Zviagin

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10.09.2019

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А вот про реордеринг обычных операций вокруг операций с

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