... but if I explicitly reorder it a bit, gcc turns it into fully interleaved operations? or is this just a side effect of sth else?pic.twitter.com/MNRGHVN7E4
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stupid question: why doesn't gcc reorder this? why aren't pipeline stalls a problem here?pic.twitter.com/F2fHuZir2o
... but if I explicitly reorder it a bit, gcc turns it into fully interleaved operations? or is this just a side effect of sth else?pic.twitter.com/MNRGHVN7E4
I think gcc assumes out-of-order execution is implemented on the CPU, shouldn't these kind of optimizations be pretty useless on modern cpu?
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