gcc/gcc toplev.c toplev.h ChangeLog

[dj@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dj@gcc.gnu.org	2004-06-08 19:24:14

Modified files:
	gcc            : toplev.c toplev.h ChangeLog 

Log message:
	* toplev.c (floor_log2_wide): Replace loop with faster bit
	operations.
	(exact_log2_wide): Define in terms of the above.
	* toplev.h (floor_log2): Use _builtin_clz family of builtins if
	available.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/toplev.c.diff?cvsroot=gcc&r1=1.902&r2=1.903
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/toplev.h.diff?cvsroot=gcc&r1=1.122&r2=1.123
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3877&r2=2.3878