No sane compiler would optimize atomics (2015)

Re:No sane compiler would optimize atomics (2015) by overgard on Monday July 12, 2021 @09:55AM (#27810299)

To be fair, it's usually like 5% slower. But I also don't usually have control over the flags if I'm writing a library.

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Re:No sane compiler would optimize atomics (2015) by umanwizard on Monday July 12, 2021 @01:02PM (#27812457)

I’d be curious to know what benchmarks you’re using on which O0 is only 5% slower. I suspect your program must be almost entirely IO-bound, if this is the case. In that case, Python, Ruby, or shell probably wouldn’t be much slower either.

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Re:No sane compiler would optimize atomics (2015) by overgard on Monday July 12, 2021 @03:40PM (#27814144)

Writing games, I've rarely seen the optimizer do anything of substantial use.

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