accessing machine specific attributes from rtx

[Jan Beulich]

That one I found, but this adds the attributes only to the TREE stuff, and I cannot see how I would access this information when having only rtx-es at hand (i.e. in a function called out of an expander in the .md file).

Thanks again, Jan

>>> Jan Hubicka <jh@suse.cz> 06.11.02 14:09:23 >>>
> I would like to add a couple of optmization hint attributes to function declarations (and pointers to functions) to the IA64 targets, but I seem to have difficulty to understand how these attributes can be accessed when I have only rtx elements at hand. Specifically, the information is needed at the point where the function call is being expanded (in this case this would be in ia64_expand_call). I can see that attributes like 'pure', 'const', or 'noreturn' are being converted to notes in emit_call_1, but there does not seem to be a way to extend this scheme for a given machine. If the target were only direct function calls, then perhaps I could look up the declaration from the target function's name, but this is no alternative as it is supposed to work for indirect calls, too.

You are probably looking for TARGET_ATTRIBUTE_TABLE.  You may take a
look how it is handled on i386, that already defines some hooks for
optimization.
Let me know if you need more.

Honza
> 
> Thank you for any hints, Jan
> 
> 
> i.A. Jan Beulich
> Software Engineer Senior
> Novell Core OS Engineering
> 
> Novell, the leading provider of Net business solutions.
> http://www.novell.com/