Functions using attribute `noreturn'...

[pmw at uk dot research dot att dot com (Paul Webster)]

I'm currently in the process of porting GCC and am trying to optimise my code
for function prologues and epilogues.

To minimise the amount of code output, I would like to check to see if the
current function is declared with the __noreturn__ attribute. If it is, then
I don't need to do output any of the function return code or save/restore any
registers that otherwise would be.

Is there any way I can find out whether the current function has been declared
with this attribute? (Similarly, for other attributes, such as interrupt). This
would be in the C support code, not in the machine description (.md) file. Is
there a GCC support routine I can call, or is it more involved?

Thanks in advance for any help.

   Paul


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