frv sibcalls and conditional returns

[Alexandre Oliva]

On Apr 30, 2004, Jim Wilson <wilson@specifixinc.com> wrote:

> Alexandre Oliva wrote:
>> This patch arranges for GCC to emit optimal code for syscall wrappers
>> in frv-uclinux.  Sibcalls were already implemented, but Richard
>> Sandiford says he ran into problems in them a very long time ago,
>> which got him to fully disable them in the branch we've been working
>> on, to the point that I reimplemented it from scratch.

> OK.

> frv_function_ok_for_sibcall has no explanatory comment before it.  It
> should also have ATTRIBUTE_UNUSED markers on the parameters to avoid
> compiler warnings.

Thanks.  Fixed in the patch below, that I'm checking in.  Also, this
one doesn't contain frv-nopic.patch as part of it, that I mistakenly
included in the previous version of this patch.  Sorry about that.

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-- 
Alexandre Oliva             http://www.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer   aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist  oliva@{lsd.ic.unicamp.br, gnu.org}