r132480 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Feb 20 14:13:47 2008
New Revision: 132480

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132480
Log:
2008-02-20  Richard Guenther  <rguenther@suse.de>

	* tree.h (fold_real_zero_addition_p): Declare.
	* fold-const.c (fold_real_zero_addition_p): Export.
	* tree-ssa-reassoc.c (eliminate_using_constants): Also handle
	floating-point operations with zero and one.

	* gcc.dg/tree-ssa/reassoc-13.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/reassoc-13.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-reassoc.c
    trunk/gcc/tree.h