[PATCH][gas][arm] Add -mwarn-restrict-it

[Nick Clifton]

Hi Wilco,

> ping

oops, sorry.

> 2019-12-06  Wilco Dijkstra  <wdijkstr@arm.com>
> 
>         * config/tc-arm.c (warn_on_restrict_it): Add new variable.
>         (it_fsm_post_encode): Check warn_on_restrict_it.
>         (arm_option_table): Add -mwarn-restrict-it/-mno-warn-restrict-it.
>         * testsuite/gas/arm/armv8-2-fp16-scalar-bad.d: Add -mwarn-restrict-it.
>         * testsuite/gas/arm/armv8-2-fp16-scalar-bad-ext.d: Likewise.
>         * testsuite/gas/arm/armv8-a-bad.d: Likewise.
>         * testsuite/gas/arm/armv8-a-it-bad.d: Likewise.
>         * testsuite/gas/arm/armv8-r-bad.d: Likewise.
>         * testsuite/gas/arm/armv8-r-it-bad.d: Likewise.
>         * testsuite/gas/arm/sp-pc-validations-bad-t-v8a.d: Likewise.
>         * testsuite/gas/arm/udf.d: Likewise.

Approved - please apply.

Cheers
  Nick