[PATCH] longlong.h: Fix obsolete ARC asm constraints

[Vlad Zakharov]

Hello, 

I got inspiration from the following gcc patch:
https://gcc.gnu.org/ml/gcc-patches/2016-04/msg01964.html

"J" constraint is rejected with recent gcc, so we have to replace it.

Adding to "CC" our GCC maintainer, he can give better comments if you have any further questions.

On Mon, 2016-08-22 at 23:36 +0200, Marc Glisse wrote:
> On Wed, 17 Aug 2016, Vlad Zakharov wrote:
> 
> > 
> > We replace obsolete "J" constraint with "Cal" constraint.
> Hello,
> 
> could you give a little more information please? In particular, does "Cal" 
> work with older versions of gcc? Does "J" still work or is it rejected 
> with a recent gcc? Do they mean the same thing?
> 
> I trust that you know what you are doing, I just like to understand a 
> patch before applying it.
> 
-- 
Best regards,
Vlad Zakharov <vzakhar at synopsys.com>