Linked by Thom Holwerda on Sat 3rd Feb 2018 14:15 UTC, submitted by Drumhellar
Mac OS X

When users attempt to launch a 32-bit app in 10.13.4, it will still launch, but it will do so with a warning message notifying the user that the app will eventually not be compatible with the operating system unless it is updated. This follows the same approach that Apple took with iOS, which completed its sunset of 32-bit app support with iOS 11 last fall.

This is good. I would prefer other companies, too, take a more aggressive approach towards deprecating outdated technology in consumer technology.

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RE: Comment by Kroc
by galvanash on Sat 3rd Feb 2018 21:15 UTC in reply to "Comment by Kroc"
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A chip that has no 32-bit hardware at all is going to require a significantly less number of transistors and therefore less heat / more room to do something else.

It can simplify some things from the perspective of the programming model, and this may allow some small but advantageous hardware changes. However, as a piratical matter, most architectures that support mixed 32-bit/64-bit ISAs do so by simply using the 64-bit hardware - there is no "32-bit hardware"...

In other words there is no significant hardware cost to to supporting 32-bit code using 64-bit hardware and whatnot - you just ignore half the contents of the registers. The only cost real cost comes in decode and some bookkeeping, but generally that cost is mostly significant.

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