gcc/gcc ChangeLog tree-ssa-phiopt.c testsuite/ ...

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	law@gcc.gnu.org	2004-05-19 03:35:20

Modified files:
	gcc            : ChangeLog tree-ssa-phiopt.c 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/gcc.dg/tree-ssa: 20040514-2.c 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: 20040518-2.c 

Log message:
	* tree-ssa-phiopt.c (abs_replacement): New function.
	(empty_block_p): New function extracted from...
	(candidate_bb_for_phi_optimization): Break out empty block test.
	(conditional_replacement): Use empty_block_p.
	(value_replacement): Similarly.
	
	* gcc.dg/tree-ssa/20040514-2.c: Update expected output.
	* gcc.dg/tree-ssa/20040518-2.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3689&r2=2.3690
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-phiopt.c.diff?cvsroot=gcc&r1=2.5&r2=2.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3761&r2=1.3762
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/20040518-2.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/20040514-2.c.diff?cvsroot=gcc&r1=1.1&r2=1.2