r213045 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Jul 25 07:44:57 2014
New Revision: 213045

URL: https://gcc.gnu.org/viewcvs?rev=213045&root=gcc&view=rev
Log:
2014-07-25  Richard Biener  <rguenther@suse.de>

	PR middle-end/61762
	PR middle-end/61894
	* fold-const.c (native_encode_int): Add and handle offset
	parameter to do partial encodings of expr.
	(native_encode_fixed): Likewise.
	(native_encode_real): Likewise.
	(native_encode_complex): Likewise.
	(native_encode_vector): Likewise.
	(native_encode_string): Likewise.
	(native_encode_expr): Likewise.
	* fold-const.c (native_encode_expr): Add offset parameter
	defaulting to -1.
	* gimple-fold.c (fold_string_cst_ctor_reference): Remove.
	(fold_ctor_reference): Handle all reads from tcc_constant
	ctors.

	* gcc.dg/pr61762.c: New testcase.
	* gcc.dg/fold-cstring.c: Likewise.
	* gcc.dg/fold-cvect.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/fold-cstring.c
    trunk/gcc/testsuite/gcc.dg/fold-cvect.c
    trunk/gcc/testsuite/gcc.dg/pr61762.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/fold-const.h
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog