r150572 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Aug  7 17:02:43 2009
New Revision: 150572

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=150572
Log:
2009-08-07  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/40999
	* tree-ssa-ccp.c (get_symbol_constant_value): Handle CONST_DECLs.
	(maybe_fold_reference): Lookup constant initializers.
	(fold_gimple_assign): Likewise.

	* gfortran.dg/pr40999.f: New testcase.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr40999.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c