[LLVMdev] A7 processor support?

Jun Koi junkoi2004 at gmail.com
Tue Sep 10 18:39:51 PDT 2013

On Wed, Sep 11, 2013 at 9:00 AM, Chris Lattner <clattner at apple.com> wrote:

> On Sep 10, 2013, at 4:17 PM, Alex Rosenberg <alexr at leftfield.org> wrote:
> > I know it's quick to ask, but when might support for the new Apple A7
> processor appear in tree?
> >
> > Is the 64-bit architecture the same as ARMv8, or will we have a much
> bigger set of changes to contend with?
> Hi Alex,
> A number of you have asked about the 64-bit CPU in the iPhone 5s, and what
> that means for LLVM.  The iPhone 5s is based on the ARMv8 / Aarch64
> instruction set, but the clang compiler in Xcode 5 is based on a custom
> LLVM Aarch64 backend, not the one currently on llvm.org.

so i suppose that Apple use the very same Aarch64 instruction set, without
any modification/extension? therefore, what they keep to themself is only
the LLVM backend?


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