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Altera_Forum
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20 years ago

using packet data types on nios

I am creating a large embedded file system on my board. Memory constraints may require that I use packed data types. I realize there are issues with data alignment and code efficiency, but maybe ther...
Altera_Forum's avatar
Altera_Forum
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20 years ago

I usually try to lump my odd-sized structure members together so the majority of the members are aligned.

It's really hard to know what the compiler will do, though, since it may well load your packed structure member into a register once and then not access the struct again. Probably best to start out packed, turn on full optimization and then fix performance problems.

Andrew