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A comment on Current hardware trends make C++ exceptions harder to justify. Parent comment

Re:Current hardware trends make C++ exceptions harder to jus... by gumby on Tuesday February 22, 2022 @03:44PM (#30433480)
> It's become hard to distinguish right and wrong when it comes to CPU optimization. Different versions of the 'same' CPU can have wildly different sweet spots.

Indeed, though I am shocked when people post benchmarks in which they are obviously unaware of this issue. It's why compilers have all those architecture switches.

If I understand your comment correctly: in the case of the posted paper, the compiler optimization issue the author mentioned was a semantics issue, not an architecture issue. If your comment was about optimizing for the multiprocessor case, I apologize.

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Re:Current hardware trends make C++ exceptions harder to jus... by JoeAltmaier on Tuesday February 22, 2022 @03:48PM (#30433543)
You're right, the issue is convoluted and nuanced. There are architecture issues, cache sizes and layers to consider, cost of misses and writes, alignment and bus sizes.

Oh for the good ol days when register size was all you had to think about!

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