r158058 - in /trunk/gcc: ChangeLog Makefile.in ...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Apr  7 12:31:32 2010
New Revision: 158058

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158058
Log:
2010-04-07  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/43270
	* tree-vrp.c (check_array_ref): Fix flexible array member
	detection.
	* tree-ssa-sccvn.h (fully_constant_vn_reference_p): Declare.
	* tree-ssa-pre.c (phi_translate_1): Adjust.
	(fully_constant_expression): Split out vn_reference handling to ...
	* tree-ssa-sccvn.c (fully_constant_vn_reference_p): ... here.
	Fold reads from constant strings.
	(vn_reference_lookup): Handle fully constant references.
	(vn_reference_lookup_pieces): Likewise.
	* Makefile.in (expmed.o-warn): Add -Wno-error.

	* g++.dg/warn/Warray-bounds-4.C: New testcase.
	* gcc.dg/Warray-bounds-7.c: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Warray-bounds-4.C
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-7.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c
    trunk/gcc/tree-ssa-sccvn.c
    trunk/gcc/tree-ssa-sccvn.h
    trunk/gcc/tree-vrp.c