gcc/gcc ChangeLog tree-ssa-threadupdate.c test ...

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	law@gcc.gnu.org	2005-05-06 03:04:16

Modified files:
	gcc            : ChangeLog tree-ssa-threadupdate.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/compile: pr21380.c 

Log message:
	PR tree-optimization/21380
	* tree-ssa-threadupdate.c (thread_through_all_blocks): Do not
	thread through a block with no preds.
	
	* gcc.c-torture/compile/pr21380.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.221&r2=2.7592.2.222
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-threadupdate.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.20&r2=2.20.10.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.161&r2=1.5084.2.162
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/pr21380.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1