[Patch AArch64] Turn on -fasynchronous-unwind-tables and -funwind-tables by default.

[James Greenhalgh]

On Tue, Mar 13, 2018 at 01:35:56PM +0000, Ramana Radhakrishnan wrote:
> Jakub commented here that
> https://gcc.gnu.org/ml/gcc-patches/2018-02/msg01325.html we don't turn
> on fasynchronous-unwind-tables for AArch64. I note that x86_64 turns on
> funwind-tables as well. Thus this patch turns on both.
> 
> Note that this doesn't increase code size but will likely increase
> binary size because we now have a lot more eh_frame / debug_frame
> information being spat out. We probably need to do get the clang /llvm
> guys to do the same but I'll prod them separately.
> 
> Bootstrapped and regression tested on aarch64-none-linux-gnu.
> 
> Ok ?

OK.

Thanks,
James