Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 17, 2016, at 12:01 PM, Michael Gottesman wrote: > > >> On Oct 17, 2016, at 11:53 AM, Michael Gottesman via swift-dev >> mailto:swift-dev@swift.org>> wrote: >> >> >>> On Oct 17, 2016, at 10:00 AM, Joe Groff >> > wrote: >>> >>> On Oct 17, 2016, at 9:57

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 17, 2016, at 11:53 AM, Michael Gottesman via swift-dev > wrote: > > >> On Oct 17, 2016, at 10:00 AM, Joe Groff > > wrote: >> >> >>> On Oct 17, 2016, at 9:57 AM, Michael Gottesman >> > wrote: >>> >>> On Oct 17, 2016, at 9:4

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 17, 2016, at 10:00 AM, Joe Groff wrote: > > >> On Oct 17, 2016, at 9:57 AM, Michael Gottesman wrote: >> >> >>> On Oct 17, 2016, at 9:42 AM, Joe Groff via swift-dev >>> wrote: >>> >>> On Oct 16, 2016, at 1:10 PM, Dave Abrahams via swift-dev wrote: on

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 17, 2016, at 10:54 AM, Dave Abrahams wrote: > > > on Mon Oct 17 2016, Joe Groff wrote: > >>> On Oct 16, 2016, at 1:10 PM, Dave Abrahams via swift-dev >>> wrote: >>> >>> >>> on Thu Oct 13 2016, Joe Groff wrote: >>> >> > On Oct 13, 2016, at 1:18 PM, Greg Parker wrote: >

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

on Mon Oct 17 2016, Joe Groff wrote: >> On Oct 16, 2016, at 1:10 PM, Dave Abrahams via swift-dev >> wrote: >> >> >> on Thu Oct 13 2016, Joe Groff wrote: >> > On Oct 13, 2016, at 1:18 PM, Greg Parker wrote: > On Oct 13, 2016, at 10:46 AM, John McCall via swift-dev >>>

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 17, 2016, at 9:57 AM, Michael Gottesman wrote: > > >> On Oct 17, 2016, at 9:42 AM, Joe Groff via swift-dev >> wrote: >> >> >>> On Oct 16, 2016, at 1:10 PM, Dave Abrahams via swift-dev >>> wrote: >>> >>> >>> on Thu Oct 13 2016, Joe Groff wrote: >>> > On Oct 13, 2016, at 1:

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 17, 2016, at 9:42 AM, Joe Groff via swift-dev > wrote: > > >> On Oct 16, 2016, at 1:10 PM, Dave Abrahams via swift-dev >> wrote: >> >> >> on Thu Oct 13 2016, Joe Groff wrote: >> On Oct 13, 2016, at 1:18 PM, Greg Parker wrote: > On Oct 13, 2016, at 10:46 AM,

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 16, 2016, at 1:10 PM, Dave Abrahams via swift-dev > wrote: > > > on Thu Oct 13 2016, Joe Groff wrote: > >>> On Oct 13, 2016, at 1:18 PM, Greg Parker wrote: >>> >>> On Oct 13, 2016, at 10:46 AM, John McCall via swift-dev wrote: >> > On Oct 13, 2016, at 9:04

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

on Thu Oct 13 2016, Joe Groff wrote: >> On Oct 13, 2016, at 1:18 PM, Greg Parker wrote: >> >> >>> On Oct 13, 2016, at 10:46 AM, John McCall via swift-dev >>> wrote: >>> > On Oct 13, 2016, at 9:04 AM, Joe Groff via swift-dev wrote: > On Mar 1, 2016, at 1:33 PM, Joe Gro

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 13, 2016, at 5:14 PM, Joe Groff wrote: > > >> On Oct 13, 2016, at 2:04 PM, Alexis wrote: >> >> Correct me if I’m wrong, but aren’t all kernel addresses negative on x64 and >> AArch64? Would this then mean any attempt to use Swift in kernel-space >> requires a distinct ABI? > > Th

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 13, 2016, at 2:14 PM, Joe Groff via swift-dev > wrote: > > >> On Oct 13, 2016, at 2:04 PM, Alexis wrote: >> >> Correct me if I’m wrong, but aren’t all kernel addresses negative on x64 and >> AArch64? Would this then mean any attempt to use Swift in kernel-space >> requires a disti

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 13, 2016, at 2:04 PM, Alexis wrote: > > Correct me if I’m wrong, but aren’t all kernel addresses negative on x64 and > AArch64? Would this then mean any attempt to use Swift in kernel-space > requires a distinct ABI? That's correct, but we'd likely already have to have a separate "ke

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

Correct me if I’m wrong, but aren’t all kernel addresses negative on x64 and AArch64? Would this then mean any attempt to use Swift in kernel-space requires a distinct ABI? > On Oct 13, 2016, at 12:04 PM, Joe Groff via swift-dev > wrote: > > >> On Mar 1, 2016, at 1:33 PM, Joe Groff via swift

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 13, 2016, at 1:18 PM, Greg Parker wrote: > > >> On Oct 13, 2016, at 10:46 AM, John McCall via swift-dev >> wrote: >> >>> On Oct 13, 2016, at 9:04 AM, Joe Groff via swift-dev >>> wrote: >>> On Mar 1, 2016, at 1:33 PM, Joe Groff via swift-dev wrote: In swift_

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 13, 2016, at 10:46 AM, John McCall via swift-dev > wrote: > >> On Oct 13, 2016, at 9:04 AM, Joe Groff via swift-dev > > wrote: >> >>> On Mar 1, 2016, at 1:33 PM, Joe Groff via swift-dev >> > wrote: >>> >>> In swift_retain/releas

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Oct 13, 2016, at 9:04 AM, Joe Groff via swift-dev > wrote: > > >> On Mar 1, 2016, at 1:33 PM, Joe Groff via swift-dev > > wrote: >> >> In swift_retain/release, we have an early-exit check to pass through a nil >> pointer. Since we're already burning branch, I

Re: [swift-dev] Having 64-bit swift_retain/release ignore all negative pointer values

> On Mar 1, 2016, at 1:33 PM, Joe Groff via swift-dev > wrote: > > In swift_retain/release, we have an early-exit check to pass through a nil > pointer. Since we're already burning branch, I'm thinking we could pass > through not only zero but negative pointer values too on 64-bit systems, >