gcc/ChangeLog:
	PR bootstrap/41205
	Fix AIX bootstrap after PR debug/30161
	* dwarf2out.c (make_ith_pack_parameter_name): Don't used strnlen
	that is a GNU extension.
	(tmpl_value_parm_die_table): Move the definition of this global
	outside #ifdef DWARF2_DEBUGGING_INFO region.

gcc/cp/ChangeLog:
	PR bootstrap/41205
	* pt.c (make_ith_pack_parameter_name): Don't use strnlen that is a
	GNU extension.

From-SVN: r151262

2009-09-01  Richard Guenther  <rguenther@suse.de>

	* tree.c (tree_expr_size): New function.
	* tree.h (tree_expr_size): Declare.
	* rtlanal.c (rtx_addr_can_trap_p_1): Adjust comment.
	* builtins.c (fold_builtin_memory_op): Use tree_expr_size.
	* langhooks.c (lhd_expr_size): Remove.
	* langhooks.h (struct lang_hooks): Remove expr_size.
	* explow.c (expr_size): Use tree_expr_size.
	(int_expr_size): Likewise.
	* langhooks-def.h (lhd_expr_size): Remove.
	(LANG_HOOKS_EXPR_SIZE): Likewise.
	(LANG_HOOKS_INITIALIZER): Adjust.

	cp/
	* cp-objcp-common.c (cp_expr_size): Use tree_expr_size.
	* cp-objcp-common.h (LANG_HOOKS_EXPR_SIZE): Do not define.

From-SVN: r151261

2009-09-01  Richard Guenther  <rguenther@suse.de>

	* tree-flow.h (mark_addressable): Move declaration ...
	* tree.h (mark_addressable): ... here.
	* stmt.c (expand_asm_operands): Use mark_addressable, not
	lang_hooks.mark_addressable.
	* langhooks-def.h (LANG_HOOKS_INITIALIZER): Remove
	LANG_HOOKS_MARK_ADDRESSABLE.
	* langhooks.h (struct lang_hooks): Remove mark_addressable langhook.

	* c-objc-common.h (LANG_HOOKS_MARK_ADDRESSABLE): Remove.

	ada/
	* gcc-interface/misc.c (LANG_HOOKS_MARK_ADDRESSABLE): Remove.

	cp/
	* cp-objcp-common.h (LANG_HOOKS_MARK_ADDRESSABLE): Remove.

	fortran/
	* f95-lang.c (gfc_mark_addressable): Remove.
	(LANG_HOOKS_MARK_ADDRESSABLE): Likewise.

	java/
	* lang.c (LANG_HOOKS_MARK_ADDRESSABLE): Remove.
	* java-tree.h (java_mark_addressable): Likewise.
	* typeck.c (java_mark_addressable): Likewise.

From-SVN: r151260

	* config/i386/i386.c (ix86_vectorize_builtin_conversion): Never
	vectorize if not TARGET_SSE2.

From-SVN: r151259

2009-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/39229
	* scanner.c (next_char): Fix typo in comment.
	(gfc_get_char_literal): Warn if truncate flag is set for both fixed and
	free form source, adjusting error locus as needed.
	* parse.c (next_fixed): Clear the truncate flag.
	(next_statement): Remove truncate warning.

From-SVN: r151258

* config/mep/mep.h (FUNCTION_ARG_REGNO_P): Exclude coprocessor
registers if no coprocessor is enabled.

From-SVN: r151257

From-SVN: r151256

From-SVN: r151252

	* testsuite/18_support/numeric_limits/denorm_min.cc: Use
	dg-add-options ieee.
	* testsuite/18_support/numeric_limits/digits10.cc: Likewise.
	* testsuite/18_support/numeric_limits/epsilon.cc: Likewise.
	* testsuite/18_support/numeric_limits/infinity.cc: Likewise.
	* testsuite/18_support/numeric_limits/is_iec559.cc: Likewise.
	* testsuite/18_support/numeric_limits/is_signed.cc: Likewise.
	* testsuite/18_support/numeric_limits/min_max.cc: Likewise.
	* testsuite/18_support/numeric_limits/quiet_NaN.cc: Likewise.
	* testsuite/18_support/numeric_limits/
	specialization_default_values.cc: Likewise.
	* testsuite/18_support/numeric_limits/traps.cc: Likewise.
	* testsuite/26_numerics/complex/pow.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	01_assoc_laguerre/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	02_assoc_legendre/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	03_beta/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	04_comp_ellint_1/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	05_comp_ellint_2/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	06_comp_ellint_3/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	07_conf_hyperg/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	08_cyl_bessel_i/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	09_cyl_bessel_j/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	10_cyl_bessel_k/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	11_cyl_neumann/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	12_ellint_1/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	13_ellint_2/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	14_ellint_3/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	15_expint/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	16_hermite/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	17_hyperg/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	18_laguerre/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	19_legendre/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	20_riemann_zeta/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	21_sph_bessel/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	22_sph_legendre/check_nan.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	23_sph_neumann/check_nan.cc: Likewise.


Co-Authored-By: Kaz Kojima <kkojima@gcc.gnu.org>

From-SVN: r151251

	* lib/target-supports.exp (add_options_for_ieee): New procedure.
	* g++.dg/cdce3.C: Use dg-add-options ieee.
	* g++.dg/torture/type-generic-1.C: Likewise.
	* gcc.c-torture/compile/fix-trunc-mem-1.c: Likewise.
	* gcc.dg/pr28796-2.c: Likewise.
	* gcc.dg/torture/builtin-math-7.c: Likewise.
	* gcc.dg/torture/type-generic-1.c: Likewise.
	* gfortran.dg/boz_14.f90: Likewise.
	* gfortran.dg/erf_2.F90: Likewise.
	* gfortran.dg/init_flag_3.f90: Likewise.
	* gfortran.dg/init_flag_4.f90: Likewise.
	* gfortran.dg/init_flag_5.f90: Likewise.
	* gfortran.dg/integer_exponentiation_1.f90: Likewise.
	* gfortran.dg/integer_exponentiation_5.F90: Likewise.
	* gfortran.dg/isnan_1.f90: Likewise.
	* gfortran.dg/isnan_2.f90: Likewise.
	* gfortran.dg/maxlocval_2.f90: Likewise.
	* gfortran.dg/maxlocval_4.f90: Likewise.
	* gfortran.dg/minlocval_1.f90: Likewise.
	* gfortran.dg/minlocval_4.f90: Likewise.
	* gfortran.dg/module_nan.f90: Likewise.
	* gfortran.dg/namelist_42.f90: Likewise.
	* gfortran.dg/namelist_43.f90: Likewise.
	* gfortran.dg/nan_1.f90: Likewise.
	* gfortran.dg/nan_2.f90: Likewise.
	* gfortran.dg/nan_3.f90: Likewise.
	* gfortran.dg/nan_4.f90: Likewise.
	* gfortran.dg/nan_5.f90: Likewise.
	* gfortran.dg/nearest_1.f90: Likewise.
	* gfortran.dg/nearest_2.f90: Likewise.
	* gfortran.dg/nearest_3.f90: Likewise.
	* gfortran.dg/pr37243.f: Likewise.
	* gfortran.dg/real_const_3.f90: Likewise.
	* gfortran.dg/transfer_simplify_2.f90: Likewise.


Co-Authored-By: Kaz Kojima <kkojima@gcc.gnu.org>

From-SVN: r151250

ChangeLog:
	PR debug/30161
	* include/dwarf2.h (enum dwarf_tag): Added
	DW_TAG_GNU_template_template_param
	(enum dwarf_attribute): Added DW_AT_GNU_template_name.

gcc/ChangeLog:
	PR debug/30161
	* cgraph.h (cgraph_get_node): Declare ...
	* cgraph.c (cgraph_get_node): ... new function.
	* dwarf2out.c (gen_generic_params_dies,
	generic_parameter_die, tree_add_const_value_attribute_for_decl,
	make_ith_pack_parameter_name,
	append_entry_to_tmpl_value_parm_die_table,
	gen_remaining_tmpl_value_param_die_attribute): New functions.
	(gen_subprogram_die): Generate debug info for template parameters
	if debug info level is higher than DINFO_LEVEL_TERSE.
	Use tree_add_const_value_attribute_for_decl instead of
	tree_add_const_value_attribute.
	(gen_const_die): Use tree_add_const_value_attribute_for_decl
	instead of tree_add_const_value_attribute.
	(gen_struct_or_union_type_die): Generate debug
	info for template parameters if debug info level is higher than
	DINFO_LEVEL_TERSE.
	(tree_add_const_value_attribute): Handle integral and pointer
	constants. Update comment.
	(dwarf_tag_name): Support DW_TAG_GNU_template_template_param.
	(dwarf_attr_name): Support DW_AT_GNU_template_name.
	(reference_to_unused): Fix thinko. Remove redundant predicates from
	tests.
	(tree_add_const_value_attribute): Make this work for constant
	expressions only.
	tree_add_const_value_attribute_for_decl is to be used for variable
	DECLs now.
	(add_location_or_const_value_attribute): Use
	tree_add_const_value_attribute_for_decl now.
	(dwarf2out_finish): Emit the DW_AT_const_value attribute of
	DW_TAG_template_value_param DIEs after function DIEs have been
	emitted.
	* langhooks.h (lang_hooks_for_types): Add
	get_argument_pack_elems.
	(lang_hooks_for_decls): Add generic_generic_parameter_decl_p.
	(lang_hooks): Added get_innermost_generic_parms,
	get_innermost_generic_args.
	* langhooks-def.h (LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS,
	LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS,
	LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS,
	LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P): New language hooks.

gcc/cp/ChangeLog:
	PR debug/30161
	* cp-tree.h (get_template_info): Parameter should be const.
	(CLASSTYPE_SPECIALIZATION_OF_PRIMARY_TEMPLATE_P): Fix typo.
	(get_template_argument_pack_elems,
	get_primary_template_innermost_parameters,
	get_template_innermost_arguments, template_template_parameter_p):
	Declare ...
	* pt.c (get_template_argument_pack_elems,
	get_template_innermost_parameters, get_template_innermost_arguments,
	template_template_parameter_p):
	... New C++ front end implementation of new language hooks.
	(primary_template_instantiation_p): New private helper.
	(make_ith_pack_parameter_name): Use snprintf and strnlen instead of
	printf and strlen.
	(get_template_info): Const-ify parameter.
	* cp-lang.c (LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS,
	LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS,
	LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS,
	LANG_HOOKS_GENERIC_TYPE_PARAMETER_DECL_P): Initialize these
	interfaces for the C++ front-end.

gcc/testsuite/ChangeLog:
	PR debug/30161
	* g++.dg/debug/dwarf2/template-params-1.C: New test.
	* g++.dg/debug/dwarf2/template-params-2.C: Likewise.
	* g++.dg/debug/dwarf2/template-params-3.C: Likewise.
	* g++.dg/debug/dwarf2/template-params-4.C: Likewise.
	* g++.dg/debug/dwarf2/template-params-5.C: Likewise.
	* g++.dg/debug/dwarf2/template-params-6.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-1.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-2.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-3.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-4.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-5.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-6.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-7.C: Likewise.

From-SVN: r151249

* config/mep/mep.c (machine_function): Add frame_locked flag.  Set
it once we start generating the prologue or epilogue.
(mep_call_saves_register): If the frame is locked, re-use cached values.
(mep_assign_save_slots): New, broken out from mep_expand_prologue.
(mep_expand_prologue): Call it.
(mep_expand_epilogue): Likewise.
(mep_start_function): Use the same logic as mep_expand_prologue.
(mep_pass_by_reference): Make logic more readable.
(mep_return_in_memory): Zero-sized objects are passed in memory.
(mep_reorg_noframe): Make sure we have accurate REG_DEAD notes.

From-SVN: r151248

	PR c++/41127
	* parser.c (cp_parser_enum_specifier): Make sure the : is followed by a
	type-specifier-seq before we commit.

From-SVN: r151246

2009-08-31  Janus Weil  <janus@gcc.gnu.org>
	    Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/40940
	* array.c (gfc_match_array_constructor): Rename gfc_match_type_spec.
	* decl.c (gfc_match_type_spec): Rename to gfc_match_decl_type_spec,
	and reject CLASS with -std=f95.
	(gfc_match_implicit, gfc_match_data_decl,gfc_match_prefix,
	match_procedure_interface): Rename gfc_match_type_spec.
	* gfortran.h (gfc_type_compatible): Add prototype.
	* match.h (gfc_match_type_spec): Rename to gfc_match_decl_type_spec.
	* match.c (match_intrinsic_typespec): Rename to match_type_spec, and
	add handling of derived types.
	(gfc_match_allocate): Rename match_intrinsic_typespec and check
	type compatibility of derived types.
	* symbol.c (gfc_type_compatible): New function to check if two types
	are compatible.

2009-08-31  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40940
	* gfortran.dg/allocate_derived_1.f90: New.
	* gfortran.dg/class_3.f03: New.


Co-Authored-By: Paul Thomas <pault@gcc.gnu.org>

From-SVN: r151244

builtins.c (fold_builtin_memory_op): Use the alias oracle to query if the memory regions for memmove overlap.

2009-08-31  Richard Guenther  <rguenther@suse.de>

	* builtins.c (fold_builtin_memory_op): Use the alias oracle
	to query if the memory regions for memmove overlap.
	* tree-ssa-alias.c (ptr_deref_may_alias_decl_p): Relax the
	asserts on pointers, instead deal with odd trees.
	(ptr_derefs_may_alias_p): Likewise.
	(refs_may_alias_p_1): Constructor bases also never alias.

From-SVN: r151241

2009-08-31  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40996
	* check.c (gfc_check_allocated): Implement allocatable scalars.
	* resolve.c (resolve_allocate_expr,resolve_fl_var_and_proc): Ditto.
	* trans-intrinsic.c (gfc_conv_allocated): Ditto.

2009-08-31  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40996
	* gfortran.dg/allocatable_scalar_1.f90: New.
	* gfortran.dg/allocatable_scalar_2.f90: Renamed from finalize_9.f03.
	* gfortran.dg/finalize_9.f03: Renamed to allocatable_scalar_2.f90.
	* gfortran.dg/proc_ptr_comp_pass_4.f90: Modified.

From-SVN: r151240

From-SVN: r151238

	* doc/install.texi (Final install): Adjust reference on where to        
	printed manuals.

From-SVN: r151231

        * dwarf2out.c (switch_to_frame_table_section): Move
        definition prior to first use.

From-SVN: r151230

2009-08-30  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.tpl (AWK): Fix typo.
	* Makefile.in: Regenerate.

From-SVN: r151229

2009-08-30  Paolo Bonzini  <bonzini@gnu.org>

	* configure.ac: Detect awk and sed.
	* Makefile.def (flags_to_pass): Add AWK and SED.
	* Makefile.tpl (AWK, SED): New.
	(BASE_FLAGS_TO_PASS): Add AWK and SED.
	* configure: Regenerate.
	* Makefile.in: Regenerate.

From-SVN: r151228

2009-08-30  Paolo Bonzini  <bonzini@gnu.org>

	PR ada/41122
	* configure.ac: Add AC_PROG_AWK.  Remove useless duplicate
	call to AC_PROG_CC.
	* configure: Regenerate.
	* Makefile.in: Substitute AWK.

From-SVN: r151227

2009-08-30  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/41186
	* tree-ssa-alias.c (ptr_deref_may_alias_ref_p): Remove.
	(ao_ref_init_from_ptr_and_size): New function.
	(ref_maybe_used_by_call_p_1): Be more precise tracking
	used ranges for builtin functions.
	(ref_maybe_used_by_call_p): Adjust.
	(call_may_clobber_ref_p_1): Be more precise tracking clobbered
	ranges for builtin functions.
	* tree-ssa-alias.h (ao_ref_init_from_ptr_and_size): Declare.

	* g++.dg/torture/pr41186.C: New testcase.
	* g++.dg/tree-ssa/pr41186.C: Likewise.

From-SVN: r151226

2009-08-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* m4/pack.m4 (pack_'rtype_code`): Use count_0 for counting true
	values in a logical array.  Mark bounds checking tests as
	unlikely.
	* intrinsics/pack_generic.c (pack_internal): Likewise.
	* runtime/bounds.c (count_0):  Fix off-by-one error in detecting
	empty arrays.
	* generated/pack_c4.c: Regenerated.
	* generated/pack_c8.c: Regenerated.
	* generated/pack_c10.c: Regenerated.
	* generated/pack_c16.c: Regenerated.
	* generated/pack_i1.c: Regenerated.
	* generated/pack_i16.c: Regenerated.
	* generated/pack_i2.c: Regenerated.
	* generated/pack_i4.c: Regenerated.
	* generated/pack_i8.c: Regenerated.
	* generated/pack_r4.c: Regenerated.
	* generated/pack_r8.c: Regenerated.
	* generated/pack_r10.c: Regenerated.
	* generated/pack_r16.c: Regenerated.

From-SVN: r151225

2009-08-30  Daniel Kraft  <d@domob.eu>

	PR fortran/37425
	* dump-parse-tree.c (show_typebound_proc): Renamed from `show_typebound'
	and accept gfc_typebound_proc and name instead of the symtree, needed
	for intrinsic operator output.
	(show_typebound_symtree): New method calling `show_typebound_proc'.
	(show_f2k_derived): Output type-bound operators also.
	(show_symbol): Moved output of `Procedure bindings:' label to
	`show_f2k_derived'.
	* gfortran.texi (Fortran 2003 status): Mention support of
	array-constructors with explicit type specification, type-bound
	procedures/operators, type extension, ABSTRACT types and DEFERRED.
	Link to Fortran 2003 wiki page.
	(Fortran 2008 status): Fix typo.  Link to Fortran 2008 wiki page.
	* gfc-internals.texi (Type-bound Procedures): Document the new
	members/attributes of gfc_expr.value.compcall used for type-bound
	operators.
	(Type-bound Operators): New section documenting their internals.

From-SVN: r151224

gcc/testsuite/ChangeLog:
	PR c++/41187
	* g++.dg/debug/dwarf2/namespace-1.C: Use a loosier regexp to
	take ia64 assembly comments syntax in account.

From-SVN: r151223

	* gcc.target/i386/funcspec-5.c: Remove fused-add test.

From-SVN: r151222

	PR target/41081
	* fwprop.c (get_reg_use_in): Delete.
	(free_load_extend): New function.
	(forward_propagate_subreg): Use it.

From-SVN: r151221

From-SVN: r151217

From-SVN: r151216

	* config.gcc (sh*-*-elf): Add superh stuff only for sh*-superh-elf.

From-SVN: r151213

	* gfortran.dg/whole_file_5.f90: Add -fpie when pic, fix scan
	pattern.
	* gfortran.dg/whole_file_6.f90: Likewise.

From-SVN: r151211

2009-08-29  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/stl_construct.h: Include <bits/move.h>.

From-SVN: r151208

2009-08-29  Chris Jefferson  <chris@bubblescope.net>

	* include/bits/move.h (_GLIBCXX_FORWARD): Add.
	* include/bits/stl_uninitialized.h (__uninitialized_construct_range):
	Add.
	* include/bits/stl_tempbuf.h (_Temporary_buffer::
	_Temporary_buffer(_ForwardIterator, _ForwardIterator)): Use the latter.
	* include/bits/stl_construct.h (_Construct(_T1*, _T2&&)): Add in
	C++0x mode.
	* testsuite/util/testsuite_hooks.h (operator<(const copy_tracker&,
    	const copy_tracker&)): Add.
	* testsuite/25_algorithms/stable_partition/mem_check.cc: New.
	* testsuite/25_algorithms/stable_sort/mem_check.cc: Likewise.

From-SVN: r151207

2009-08-29  Steven G. Kargl  <kargl@gcc.gnu.org>

	* trans-expr.c(gfc_trans_assignment_1): Correct a comment.

From-SVN: r151205

2009-08-29  Kai Tietz<kai.tietz@onevision.com>

        PR/41184
        * config/i386.c (ix86_expand_epilogue): Correct stack adjustment for
        padding.

From-SVN: r151204

	* crtstuff.c (__do_global_dtors_aux): Use atexit if no
	fini or fini_array section.

From-SVN: r151202

From-SVN: r151199

2009-08-28  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-dependences.c (graphite_legal_transform_bb): Call
	pbb_remove_duplicate_pdrs.
	* graphite-poly.c (can_collapse_pdr): Removed.
	(pdr_find_duplicate): Removed.
	(can_collapse_pdrs): New.
	(pbb_remove_duplicate_pdrs): New.
	(new_poly_dr): Do not look for duplicates.
	* graphite-poly.h (struct poly_bb): New field pdr_duplicates_removed.
	(PBB_PDR_DUPLICATES_REMOVED): New.
	(pbb_remove_duplicate_pdrs): Declared.

From-SVN: r151192

graphite-interchange.c (pbb_interchange_profitable_p): Adjust the strides by multiplying by PDR_NB_REFS.

2009-08-28  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-interchange.c (pbb_interchange_profitable_p): Adjust
	the strides by multiplying by PDR_NB_REFS.
	* graphite-poly.c (can_collapse_pdr): New.
	(pdr_find_duplicate): New.
	(new_poly_dr): Call pdr_find_duplicate.  Collapse duplicate PDRs.
	Initialize PDR_NB_REFS.
	* graphite-poly.h (struct poly_dr): Add field nb_refs.
	(PDR_NB_REFS): New.
	(new_poly_dr): Number of subscripts is a graphite_dim_t.

From-SVN: r151191