[webkit-dev] Bring back ARMv6 support to JSC

Filip Pizlo fpizlo at apple.com
Tue Sep 5 08:37:16 PDT 2017

There isn’t anyone maintaining the 32-not JIT ports to the level of quality we have in our 64-not ports. Making 32-bit use the 64-bit cloop would be a quality progression for actual users of 32-bit. 


> On Sep 5, 2017, at 8:02 AM, Adrian Perez de Castro <aperez at igalia.com> wrote:
>> On Tue, 5 Sep 2017 16:38:09 +0200, Osztrogonác Csaba <oszi at inf.u-szeged.hu> wrote:
>> [...]
>> Maybe it will be hard to say good bye to 32-bit architecutres
>> for many people, but please, it's 2017 now, the first ARMv8 SoC
>> is out 4 years ago, the first AMD64 CPU is out 14 years ago.
> While it's true that amd64/x86_64 has been around long enough to not have to
> care (much) about its 32-bit counterpart; the same cannot be said about ARM.
> It would be great to be able to say that 32-bit ARM is well dead, but we are
> not there yet.
> If we take x86_64 as an example, it has been “only” 10 years since the last
> new 32-bit CPU was announced and until 3-4 years ago it wasn't uncommon to
> see plently of people running 32-bit userlands. If things unroll in a similar
> way in the ARM arena, I would expect good 32-bit ARM support being relevant
> at least for another 3-4 years before the need starts to fade away.
> If something, I think it may make more sense to remove 32-bit x86 support,
> and have the 32-bit ARM support around for some more time.
> Cheers,
> --
> Adrián 🎩
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