As been as old as Quinn, I got the exact SAME impression! :)
> On 22 Aug 2016, at 11:03, Quinn The Eskimo! via swift-dev > <swift-dev@swift.org> wrote: > > > On 21 Aug 2016, at 02:25, Chris Lattner via swift-dev <swift-dev@swift.org> > wrote: > >> ARM64 even has a hardware feature for this, called “top byte ignored” (TBI) >> which means you don’t even have to do the masking. > > Urgh, horrible flashbacks to the “32-bit clean” effort during the late 80s: > > Currently the Macintosh OS runs in a 24-bit world, where the hardware > ignores > the high byte of all memory addresses (including pointers and handles). > -- Technote OV11 “The Joy Of Being 32-Bit Clean” > > <https://developer.apple.com/legacy/library/technotes/ov/ov_11.html#//apple_ref/doc/uid/DTS10002609> > > (-: > > Share and Enjoy > -- > Quinn "The Eskimo!" <http://www.apple.com/developer/> > Apple Developer Relations, Developer Technical Support, Core OS/Hardware > > > _______________________________________________ > swift-dev mailing list > swift-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-dev _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev
