------- Additional Comments From falk at debian dot org  2005-01-27 09:02 
-------
(In reply to comment #0)
> strspn, strcspn, strpbrk functions make a bitmap out of their second argument 
> and then process their first argument using that bitmap.
> If the second argument is a constant string, that bitmap should be built at 
> the 
> compile time, and strspn call be replaced with some intrinsic function that 
> can 
> use that bitmap.

Well, with that we'd be wandering off far into libc land. While this kind of
optimization is nice, I wouldn't really want to have strspn code for 40
platforms in gcc to maintain (and if you're that desperate for speed, you
want platform-specific code). Alternatively, you could try to convince your
libc providers to include such functions in their libc, and then we might
implement calling them.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19652

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