[LLVMdev] Is va_arg deprecated?

[Will Dietz]

To get clang to emit va_arg instructions for va_arg() calls, as
opposed to manually lowering it in the frontend, same as the llvm-gcc
patch sent earlier does.

~Will

On Wed, Aug 17, 2011 at 2:41 PM, Eric Christopher <echristo at apple.com> wrote:
>
> On Aug 17, 2011, at 11:53 AM, Will Dietz wrote:
>
>> FWIW, attached is a similar patch that adds a -falways-use-llvm-vaarg
>> flag to Clang.
>>
>> Applies against mainline.
>>
>> (As discussed, va_arg isn't really supported well so this probably
>> doesn't work well on anything other than simple code, YMMV, etc)
>>
>> ~Will
>>
>> On Thu, May 12, 2011 at 12:29 PM, Arushi Aggarwal <arushi987 at gmail.com> wrote:
>>> Have these changes made it to mainline? Is there a way to get a patch for the
>>> backend, which does the actual lowering?
>>>
>>> Thanks,
>>> Arushi
>>>
>>> On Sun, Feb 20, 2011 at 1:54 PM, David Meyer <pdox at google.com> wrote:
>>>> Sergey,
>>>> Here's a patch on llvm-gcc which adds a flag "-fuse-llvm-va-arg".
>>>> (Note that this patch won't ever be part of llvm-gcc upstream. It will most
>>>> likely be deprecated by later changes.)
>>>> - pdox
>>>>
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>>>
>>>
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>
>> <0001-Add-option-to-force-emitting-va_arg-instruction.patch>_______________________________________________
>
> So, what's the point of this one?
>
> -eric
>
>