[Patch, ARM] Relax the restrictions on REG_SP under Thumb mode on ARMv8-A

[Jiong Wang]

On 11/07/17 13:38, Jiong Wang wrote:
>
>
> This patch relaxes one restriction on REG_SP.  That restriction is valid
> before ARMv8-A, but has been removed since ARMv8-A on ARM32.  GAS support
> had missed this.  I think there is no risk to backport this bug fix.
>
> I will wait Tristan's approval.

Have pushed to 2.28 branch after quick build and gas cross-regression OK.

This privately approved by Tristan.

Thanks.

Regards,
Jiong