[PATCH, i386] Fix PR 81294, _subborrow_u64 argument order inconsistent with intrinsic reference

[Jakub Jelinek]

On Tue, Jul 04, 2017 at 10:41:26PM +0200, Uros Bizjak wrote:
> Hello!
> 
> Apparently, Intel changed operand order with the new intrinsic
> reference release version. Attached patch updates gcc intrinsic
> headers accordingly.
> 
> 2017-07-04  Uros Bizjak  <ubizjak@gmail.com>
> 
>     PR target/81294
>     * config/i386/adxintrin.h (_subborrow_u32): Swap _X and _Y
>     arguments in the call to __builtin_ia32_sbb_u32.
>     (_subborrow_u64): Swap _X and _Y arguments in the call to
>     __builtin_ia32_sbb_u64.
> 
> testsuite/ChangeLog:
> 
> 2017-07-04  Uros Bizjak  <ubizjak@gmail.com>
> 
>     PR target/81249
>     * gcc.target/i386/adx_addcarryx32-2.c (adx_test): Swap
>     x and y arguments in the call to _subborrow_u32.
>     * gcc.target/i386/adx_addcarryx64-2.c (adx_test): Swap
>     x and y arguments in the call to _subborrow_u64.
>     * gcc.target/i386/pr81294-1.c: New test.
>     * gcc.target/i386/pr81294-2.c: Ditto.
> 
> Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
> 
> Committed to mainline SVN, willbe backported to release branches.

When it goes into release branches, it needs changes.html changes
for each of those to make users aware of that.
7.2 will have rc after mid July, so if you want it in 7.2, it should be
committed before that.  5.5 + 5.x branch closing will be around that time
too.

	Jakub