gcc/gcc ChangeLog combine.c

[nemet@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	nemet@gcc.gnu.org	2003-02-14 07:35:46

Modified files:
	gcc            : ChangeLog combine.c 

Log message:
	PR opt/2391
	* combine.c: Fix spelling in comment.
	(cached_nonzero_bits): New function.
	(cached_num_sign_bit_copies): New function.
	(nonzero_bits_with_known): New macro.
	(num_sign_bit_copies_with_known): New macro.
	(nonzero_bits1): Rename from nonzero_bits.  Add three new
	arguments.  Change calls from nonzero_bits to
	nonzero_bits_with_known.
	(num_sign_bit_copies1): Rename from num_sign_bit_copies.  Add
	three new arguments.  Change calls from num_sign_bit_copies to
	num_sign_bit_copies_with_known.
	(nonzero_bits): New macro.
	(num_sign_bit_copies): New macro.
	(update_table_tick): Don't traverse identical subexpression more
	than once.
	(get_last_value_validate): Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.16735&r2=1.16736
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&r1=1.339&r2=1.340