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gcc/gcc ChangeLog cfgloop.h cfgloopanal.c


CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rakdver@gcc.gnu.org	2003-11-05 18:10:44

Modified files:
	gcc            : ChangeLog cfgloop.h cfgloopanal.c 

Log message:
	* cfgloopanal.c (variable_initial_value, variable_initial_values,
	simple_loop_exit_p): Record the fact that initial value is extended
	from inner mode.
	(count_strange_loop_iterations, count_loop_iterations): Handle
	ivs that iterate in a narrower mode. Fix handling of overflows.
	Improve handling of NE conditions.
	(inverse, fits_in_mode_p): New static functions.
	(simple_increment): Detect variables that iterate in a narrower mode.
	* cfgloop.h (struct loop_desc): Fields inner_mode and extend added.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1674&r2=2.1675
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgloop.h.diff?cvsroot=gcc&r1=1.10&r2=1.11
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgloopanal.c.diff?cvsroot=gcc&r1=1.14&r2=1.15


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