Re: Sibcall fallback

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Jan 6, 2010 at 2:13 PM, Paulo J. Matos <pocmatos@xxxxxxxxx> wrote:
>
> An issue arose during the implementation of the solution to my initial problem.
> As far as I understood epilogues include a return instruction but not
> sibcall epilogues. Therefore, if decide to do sibcall from
> TARGET_FUNCTION_OK_FOR_SIBCALL and later in the expand_epilogue, I
> decide that I don't want to do a sibcall, I need to somehow avoid the
> generation of the sibcall return outside the epilogue (usually done
> through sibcall, sibcall_value, etc.).
>
> How can I do this?
>

Well, just found I can't. From the internals on TARGET_FUNCTION_OK_FOR_SIBCALL:
"The hook is used to enforce these restrictions, as the sibcall md
pattern can not fail, or fall over to a “normal” call."

> Cheers,
>
> Paulo Matos
>
>> Thanks,
>>
>> --
>> Paulo Jorge Matos - pocmatos at gmail.com
>> http://www.pmatos.net
>>
>
>
>
> --
> Paulo Jorge Matos - pocmatos at gmail.com
> http://www.pmatos.net
>



-- 
Paulo Jorge Matos - pocmatos at gmail.com
http://www.pmatos.net


[Index of Archives]     [Linux C Programming]     [Linux Kernel]     [eCos]     [Fedora Development]     [Fedora Announce]     [Autoconf]     [The DWARVES Debugging Tools]     [Yosemite Campsites]     [Yosemite News]     [Linux GCC]

  Powered by Linux