Add call_fusage_contains_non_callee_clobbers hook

[Tom de Vries]

On 23-04-14 17:10, Richard Sandiford wrote:
> FWIW I think this should be a plain bool rather than a function,
> like delay_sched2 etc.
>

Vladimir,

I've reimplemented the hook using DEFHOOKPOD instead of DEFHOOK, to make it a 
plain bool.

OK for trunk?

Thanks,
- Tom

2013-04-29  Radovan Obradovic  <robradovic@mips.com>
             Tom de Vries  <tom@codesourcery.com>

         * target.def (call_fusage_contains_non_callee_clobbers): New DEFHOOKPOD.
         * doc/tm.texi.in (@node Stack and Calling): Add Miscellaneous Register
         Hooks to @menu.
         (@node Miscellaneous Register Hooks): New node.
         (@hook TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS): New hook.
         * doc/tm.texi: Regenerate.


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