Re: [PATCH, GCC/ARM] Use bitmap to control cmse_nonsecure_call register clearing

[Kyrill Tkachov <kyrylo dot tkachov at foss dot arm dot com>]

Hi Thomas,

On 15/11/17 17:08, Thomas Preudhomme wrote:
> Hi,
>
> As part of r253256, cmse_nonsecure_entry_clear_before_return has been
> rewritten to use auto_sbitmap instead of an integer bitfield to control
> which register needs to be cleared. This commit continue this work in
> cmse_nonsecure_call_clear_caller_saved.
>
> ChangeLog entry is as follows:
>
> *** gcc/ChangeLog ***
>
> 2017-10-16  Thomas Preud'homme <thomas.preudhomme@arm.com>
>
>         * config/arm/arm.c (cmse_nonsecure_call_clear_caller_saved): Use
>         auto_sbitap instead of integer bitfield to control register 
> needing
>         clearing.
>
> Testing: bootstrapped on arm-linux-gnueabihf and no regression in the
> testsuite.
>
> Is this ok for trunk?

Ok for trunk.
Thanks for this conversion. It's much easier to understand the code
without having to think about the bitmasks and shifts.

Kyrill

> Best regards,
>
> Thomas