r143588 - in /trunk/gcc: ChangeLog fold-const.c...

[bonzini@gcc.gnu.org]

Author: bonzini
Date: Fri Jan 23 15:57:19 2009
New Revision: 143588

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143588
Log:
2008-01-23  Paolo Bonzini  <bonzini@gnu.org>

	PR tree-optimization/38932
	* fold-const.c (fold_unary_no_overflow): New.
	* tree.h (fold_unary_no_overflow): Declare.
	* tree-ssa-ccp.c (ccp_fold): Use fold_unary_no_overflow.
	* tree-ssa-sccvn.c (visit_reference_op_load,
	simplify_unary_expression): Likewise.

testsuite:
2008-01-23  Paolo Bonzini  <bonzini@gnu.org>

	PR tree-optimization/38932
	* gcc.dg/pr38932.c: New.


Added:
    trunk/gcc/testsuite/gcc.dg/pr38932.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c
    trunk/gcc/tree-ssa-sccvn.c
    trunk/gcc/tree.h