From mboxrd@z Thu Jan  1 00:00:00 1970
From: pmw@uk.research.att.com (Paul Webster)
To: gcc-help@gcc.gnu.org
Subject: Functions using attribute `noreturn'...
Date: Sat, 01 Apr 2000 00:00:00 -0000
Message-ID: <200002021707.RAA14128@rocoto>
X-SW-Source: 2000-q1/msg00202.html
Message-ID: <20000401000000.EeDdd0YphI5_osrUx17I9q2IMIkdqR2pgWmaQ0LrLGM@z>

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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                          AT&T Laboratories Cambridge
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