[PATCH] speedup tagged_types_tu_compatible_p

[Andrew Pinski <pinskia at physics dot uc dot edu>]

When using IMA, tagged_types_tu_compatible_p is slow because 
ENUMERAL_TYPE has to checked.
ENUMERAL_TYPE is slow checking because it has go through two linked 
lists.  This patch
speeds up <ENUMERAL_TYPE> case by special casing the case where the 
enumerator types
values are in the same order.

OK? Bootstrapped on powerpc-apple-darwin7.2.0 with and without 
--enable-intermodule.  No
regressions.

Thanks,
Andrew Pinski

ChangeLog:


	* c-typeck.c (tagged_types_tu_compatible_p) <ENUMERAL_TYPE>:
	Speedup common case of the type values being in the same order.

Attachment: temp.diff.txt
Description: Text document