gcc/gcc ChangeLog.tree-ssa tree-cfg.c tree-ssa ...

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	law@gcc.gnu.org	2003-02-21 03:40:45

Modified files:
	gcc            : ChangeLog.tree-ssa tree-cfg.c tree-ssa-dce.c 

Log message:
	* tree-cfg.c (remove_bb): Update PHI nodes as edges are removed.
	(cleanup_cond_expr_graph): Likewise.
	(cleanup_switch_expr_graph): Likewise.
	(disconnect_unreachable_case_labels): Likewise.
	
	* tree-ssa-dce.c (mark_control_parent_necessary): Be much more
	selective about what statements in the control parents are marked
	as necessary.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.tree-ssa.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.240&r2=1.1.2.241
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-cfg.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.55&r2=1.1.4.56
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-dce.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.27&r2=1.1.2.28