So awesome: Microsoft's "performance tidbits" got 50% of their "incontrovertible facts" about x64 wrong :(pic.twitter.com/Ukc9x7GYdb
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@cmuratori @ricomariani It is not difficult to construct a register-dependent algorithm that is bigger in x86 than in x64.
@cmuratori @ricomariani Similarly, it is equivalently false, _and even usually false_, that the same algorithm is _slower_.
@cmuratori @ricomariani This is again because of register spilling.
@cmuratori The article is about a hypothetical port of VS to 64 bit. I can assure you it would be bigger. It isn't about say math kernels.
@ricomariani Yeah, I can assure you it would be bigger too! What does that have to do with the definition of a fact?
@cmuratori I've consistently disclaimed that I write approximately correct articles to avoid having to write a novel.
@ricomariani That's such a cop-out. Allow me to quote you:pic.twitter.com/kBKR8cESPm
@cmuratori I could write, most programs ported most of the time mostly get somewhat bigger except sometimes. This would be very tedious.
@ricomariani Or you could write the truth, which is that well-written programs get slightly larger and slightly faster in 64-bit.
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