llvm dev - Sep 2018 - How to cross-compile for ARC in clang?

Oh, that's what I was afraid of.
So there is definetly no way to compile for ARC?
If so, should I write ARC.h(.cpp) in lib/Basic/Targets in order to make it
work?

чт, 27 сент. 2018 г. в 14:47, Tim Northover <t.p.northover at gmail.com>:
> Hi,
>
> On Thu, 27 Sep 2018 at 12:41, Павел Безбородов via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > clang -target arc -S test.cpp
>
> I couldn't find any trace of ARC in the Clang source, so I suspect
> it's only supported by LLVM at the moment.
>
> Cheers.
>
> Tim,
>
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On Thu, 27 Sep 2018 at 12:56, Павел Безбородов <dfa.sro591 at gmail.com>
wrote:
> Oh, that's what I was afraid of.
> So there is definetly no way to compile for ARC?
> If so, should I write ARC.h(.cpp) in lib/Basic/Targets in order to make it
work?
Yes, lib/Basic/Targets looks like the basic entry point. If you don't
care what ABI or CPU you get that might be enough. Otherwise you'll
want to investigate lib/CodeGen/TargetInfo.cpp and
lib/Driver/ToolChains/Arch/ARC.cpp too. There are other
target-specific details scattered around the source, but those are the
main ones to get started.

Cheers.

Tim.

On 9/27/2018 7:56 AM, Павел Безбородов via llvm-dev wrote:
Oh, that's what I was afraid of.
So there is definetly no way to compile for ARC?
If so, should I write ARC.h(.cpp) in lib/Basic/Targets in order to make it work?

I suggest you reach out to the contributors of the LLVM ARC backend (CCd) to ask
about their plans to contribute target support for Clang.  I believe they have
work in progress, but I don't know their plans for contributing it.

Tom.


чт, 27 сент. 2018 г. в 14:47, Tim Northover <t.p.northover at
gmail.com<mailto:t.p.northover at gmail.com>>:
Hi,

On Thu, 27 Sep 2018 at 12:41, Павел Безбородов via llvm-dev
<llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>>
wrote:
> clang -target arc -S test.cpp
I couldn't find any trace of ARC in the Clang source, so I suspect
it's only supported by LLVM at the moment.

Cheers.

Tim,

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Hello,

Thanks for the note here.
We put up a patch a while back for enabling the ARC target in clang, the
compiler:
https://reviews.llvm.org/D43089

(I didn't realize this was from so far back until looking now).
The current backend has really only been exercised through C.
So, applying this patch should help.
We also have some driver changes which can be used to integrate with the ARC GNU
toolchain.  The sticky point is C++ support.

Pete


From: Tom Honermann
Sent: Thursday, September 27, 2018 6:17 AM
To: Павел Безбородов <dfa.sro591 at gmail.com>; t.p.northover at
gmail.com; llvm-dev at lists.llvm.org
Cc: Pete Couperus <petecoup at synopsys.com>
Subject: Re: [llvm-dev] How to cross-compile for ARC in clang?

On 9/27/2018 7:56 AM, Павел Безбородов via llvm-dev wrote:
Oh, that's what I was afraid of.
So there is definetly no way to compile for ARC?
If so, should I write ARC.h(.cpp) in lib/Basic/Targets in order to make it work?

I suggest you reach out to the contributors of the LLVM ARC backend (CCd) to ask
about their plans to contribute target support for Clang.  I believe they have
work in progress, but I don't know their plans for contributing it.

Tom.



чт, 27 сент. 2018 г. в 14:47, Tim Northover <t.p.northover at
gmail.com<mailto:t.p.northover at gmail.com>>:
Hi,

On Thu, 27 Sep 2018 at 12:41, Павел Безбородов via llvm-dev
<llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>>
wrote:
> clang -target arc -S test.cpp
I couldn't find any trace of ARC in the Clang source, so I suspect
it's only supported by LLVM at the moment.

Cheers.

Tim,


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