backport: As described in http://gcc.gnu.org/ml/gcc/2012-08/msg00015.html...

Merge from cxx-conversion branch (http://gcc.gnu.org/wiki/cxx-conversion).

As described in http://gcc.gnu.org/ml/gcc/2012-08/msg00015.html, this patch
changes the default bootstrap process so that stage 1 always builds with a C++
compiler.

Other than the bootstrap change, the patch makes no functional changes to the
compiler.  Everything should build as it does now in trunk.  The main
changes in this patch are:

1- Configuration changes.
2- Re-write of VEC.
3- Re-write of gengtype to support C++ templates and
   user-provided marking functions.
4- New hash table class.
5- Re-write double_int.
6- Implement tree macros as inline functions so they can be
   called from gdb.

As discussed before, several of these changes do not fully change
the call sites to use the new APIs.

The bootstrap changes have already been tested on a wide range of
targets (http://gcc.gnu.org/wiki/CppBuildStatus).  Additionally,
I have tested the merged trunk on: x86_64-unknown-linux-gnu,
mips64el-unknown-linux-gnu, powerpc64-unknown-linux-gnu,
i686-pc-linux-gnu, and ia64-unknown-linux-gnu.

ChangeLog
2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.

	* Makefile.tpl (STAGE[+id+]_CXXFLAGS): Remove
	POSTSTAGE1_CONFIGURE_FLAGS.
	* Makefile.in: Regenerate.
	* configure.ac (ENABLE_BUILD_WITH_CXX): Remove.  Update all users.
	Force C++ when bootstrapping.
	* configure: Regenerate.


libcpp/ChangeLog
2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.  Configury.

	* Makefile.in: Remove all handlers of ENABLE_BUILD_WITH_CXX.
	* configure.ac: Likewise.
	* configure: Regenerate.

2012-08-14   Lawrence Crowl  <crowl@google.com>

	Merge from cxx-conversion branch.  New C++ hash table.

	* include/symtab.h (typedef struct ht hash_table): Change the typedef
	name to cpp_hash_table.  Update all users of the typedef.

gcc/ChangeLog
2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.  Configury.

	* configure.ac (CXX_FOR_BUILD): Define and substitute.
	(BUILD_CXXFLAGS): Define.
	Remove all handlers of ENABLE_BUILD_WITH_CXX.
	Force all build to be with C++.
	* Makefile.in (BUILD_CXXFLAGS): Use it.
	Remove all handlers of ENABLE_BUILD_WITH_CXX.
	* configure: Regenerate.
	* config.in: Regenerate.
	* doc/install.texi: Remove documentation for --enable-build-with-cxx
	and --enable-build-poststage1-with-cxx.

2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.  Re-implement VEC in C++.

	* vec.c (vec_heap_free): Convert into a template function.
	(vec_gc_o_reserve_1): Make extern.
	(vec_gc_p_reserve): Remove.
	(vec_gc_p_reserve_exact): Remove.
	(vec_gc_o_reserve): Remove.
	(vec_gc_o_reserve_exact): Remove.
	(vec_heap_o_reserve_1): Make extern.
	(vec_heap_p_reserve): Remove.
	(vec_heap_p_reserve_exact): Remove.
	(vec_heap_o_reserve): Remove.
	(vec_heap_o_reserve_exact): Remove.
	(vec_stack_p_reserve): Remove.
	(vec_stack_p_reserve_exact): Remove.
	* vec.h (VEC_CHECK_INFO, VEC_CHECK_DECL, VEC_CHECK_PASS,
	VEC_ASSERT, VEC_ASSERT_FAIL, vec_assert_fail): Move earlier
	in the file.
	(VEC): Define to vec_t<T>.
	(vec_allocation_t): Define.
	(struct vec_prefix): Move earlier in the file.
	(vec_t<T>): New template.
	(DEF_VEC_I, DEF_VECL_ALLOC_I, DEF_VEC_P, DEF_VEC_ALLOC_P,
	DEF_VEC_O, DEF_VEC_ALLOC_P, DEF_VEC_O, DEF_VEC_ALLOC_O,
	DEF_VEC_ALLOC_P_STACK, DEF_VEC_ALLOC_O_STACK,
	DEF_VEC_ALLOC_I_STACK): Expand to 'struct vec_swallow_trailing_semi'.
	(DEF_VEC_A): Provide template instantiations for
	GC/PCH markers that do not traverse the vector.
	(vec_stack_p_reserve): Remove.
	(vec_stack_p_reserve_exact): Remove.
	(vec_stack_p_reserve_exact_1): Remove.
	(vec_stack_o_reserve): Remove.
	(vec_stack_o_reserve_exact): Remove.
	(vec_stack_free): Re-write as a template function.
	(vec_reserve): New template function.
	(vec_reserve_exact): New template function.
	(vec_heap_free): New template function if GATHER_STATISTICS is
	defined.  Otherwise, macro that expands to free().
	(VEC_length_1): New template function.
	(VEC_length): Call it.
	(VEC_empty_1): New template function.
	(VEC_empty): Call it.
	(VEC_address_1): New template function.
	(VEC_address): Call it.
	(VEC_last_1): New template function.
	(VEC_last): Call it.  Change return type to T&.
	Change all users that used VEC_Os.
	(VEC_index_1): New template function.
	(VEC_index): Call it.  Return a T& instead of a T*.
	Update all callers that were using VEC_O before.
	(VEC_iterate_1): New template function.
	(VEC_iterate): Call it.
	(VEC_embedded_size_1): New template function.
	(VEC_embedded_size): Call it.
	(VEC_embedded_init_1): New template function.
	(VEC_embedded_init): Call it.
	(VEC_alloc_1): New template function.
	(VEC_alloc): Call it.  If A is 'stack', call XALLOCAVAR to
	do the allocation.
	(VEC_free_1): New template function.
	(VEC_free): Call it.
	(VEC_copy_1): New template function.
	(VEC_copy): Call it.
	(VEC_space_1): New template function
	(VEC_space): Call it.
	(VEC_reserve_1): New template function.
	(VEC_reserve): Call it.
	(VEC_reserve_exact_1): New template function.
	(VEC_reserve_exact): Call it.
	(VEC_splice_1): New template function.
	(VEC_splice): Call it.
	(VEC_safe_splice_1): New template function.
	(VEC_safe_splice): Call it.
	(VEC_quick_push_1): New template function.  Create two overloads, one
	accepting T, the other accepting T *.  Update all callers
	where T and T * are ambiguous.
	(VEC_quick_push): Call it.
	(VEC_safe_push_1): New template function. Create two overloads, one
	accepting T, the other accepting T *.  Update all callers
	where T and T * are ambiguous.
	(VEC_safe_push): Call it.
	(VEC_pop_1): New template function.
	(VEC_pop): Call it.
	(VEC_truncate_1): New template function.
	(VEC_truncate): Call it.
	(VEC_safe_grow_1): New template function.
	(VEC_safe_grow): Call it.
	(VEC_safe_grow_cleared_1): New template function.
	(VEC_safe_grow_cleared): Call it.
	(VEC_replace_1): New template function.
	(VEC_replace): Call it.  Always accept T instead of T*.
	Update all callers that used VEC_Os.
	(VEC_quick_insert_1): New template function.
	(VEC_quick_insert): Call it.
	(VEC_safe_insert_1): New template function.
	(VEC_safe_insert): Call it.
	(VEC_ordered_remove_1): New template function.
	(VEC_ordered_remove): Call it.
	(VEC_unordered_remove_1): New template function.
	(VEC_unordered_remove): Call it.
	(VEC_block_remove_1): New template function.
	(VEC_block_remove): Call it.
	(VEC_lower_bound_1): New template function.
	(VEC_lower_bound): Call it.
	(VEC_OP): Remove.
	(DEF_VEC_FUNC_P): Remove.
	(DEF_VEC_ALLOC_FUNC_P): Remove.
	(DEF_VEC_NONALLOC_FUNCS_P): Remove.
	(DEF_VEC_FUNC_O): Remove.
	(DEF_VEC_ALLOC_FUNC_O): Remove.
	(DEF_VEC_NONALLOC_FUNCS_O): Remove.
	(DEF_VEC_ALLOC_FUNC_I): Remove.
	(DEF_VEC_NONALLOC_FUNCS_I): Remove.
	(DEF_VEC_ALLOC_FUNC_P_STACK): Remove.
	(DEF_VEC_ALLOC_FUNC_O_STACK): Remove.
	(DEF_VEC_ALLOC_FUNC_I_STACK): Remove.
	(vec_reserve_exact): New template function.

	* gengtype-lex.l (DEF_VEC_ALLOC_[IOP]/{EOID}): Remove.
	* gengtype-parse.c (token_names): Remove DEF_VEC_ALLOC_[IOP].
	(typedef_name): Emit vec_t<C1> instead of VEC_C1_C2.
	(def_vec_alloc): Remove.  Update all callers.
	* gengtype.c (filter_type_name): New.
	(output_mangled_typename): Call it.
	(write_func_for_structure): Likewise.
	(write_types): Likewise.
	(write_root): Likewise.
	(write_typed_alloc_def): Likewise.
	(note_def_vec): Emit vec_t<TYPE_NAME> instead of VEC_TYPE_NAME_base.
	(note_def_vec_alloc): Remove.
	* gengtype.h (note_def_vec_alloc): Remove.
	(DEFVEC_ALLOC): Remove token code.

	* df-scan.c (df_bb_verify): Remove call to df_free_collection_rec
	inside the insn traversal loop.
	* gimplify.c (gimplify_compound_lval): Rename STACK to EXPR_STACK.
	* ipa-inline.c (inline_small_functions): Rename HEAP to EDGE_HEAP.
	* reg-stack.c (stack): Rename to STACK_PTR.  Update all users.
	* tree-vrp.c (stack): Rename to EQUIV_STACK.  Update all users.

	* config/bfin/bfin.c (hwloop_optimize): Update some calls to
	VEC_* for vectors of non-pointers.
	* config/c6x/c6x.c (try_rename_operands): Likewise.
	(reshuffle_units): Likewise.
	* config/mips/mips.c (mips_multi_start): Likewise.
	(mips_multi_add): Likewise.
	(mips_multi_copy_insn): Likewise.
	(mips_multi_set_operand): Likewise.
	* hw-doloop.c (discover_loop): Likewise.
	(discover_loops): Likewise.
	(reorg_loops): Likewise.

2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.  C++ support in gengtype.

	* coretypes.h (gt_pointer_operator): Move from ...
	* ggc.h: ... here.
	* doc/gty.texi: Document support for C++ templates and
	user-provided markers.
	* gcc/gengtype-lex.l: Update copyright year.
	Remove support for recognizing DEF_VEC_O, DEF_VEC_P and
	DEFVEC_I.
	* gengtype-parse.c: Update copyright year.
	(token_names): Remove DEF_VEC_O, DEF_VEC_P and DEF_VEC_I.
	(require_template_declaration): New.
	(typedef_name): Call it.
	(type): Replace IS_UNION with KIND. Replace all users.
	(def_vec): Remove.  Update all users.
	* gengtype-state.c (type_lineloc): Handle TYPE_USER_STRUCT.
	(write_state_user_struct_type): New.
	(write_state_type): Call it.
	(read_state_user_struct_type): New.
	(read_state_type): Call it.
	* gengtype.c: Update copyright year.
	(dump_pair): Move declaration to the top.
	(dump_type): Likewise.
	(dump_type_list): Likewise.
	(dbgprint_count_type_at): Handle TYPE_USER_STRUCT.
	(create_user_defined_type): New.
	(resolve_typedef): Call it.
	(new_structure): Replace argument ISUNION with KIND.
	Change users to refer to KIND directly.
	Update all callers.
	(find_structure): Likewise.
	(set_gc_used_type): Handle TYPE_USER_STRUCT.
	(create_file): Update HDR to include new copyright year.
	(struct walk_type_data): Add field IN_PTR_FIELD.
	(output_mangled_typename): Handle TYPE_USER_STRUCT.
	(walk_type): Set D->IN_PTR_FIELD when walking a TYPE_POINTER.
	Clear it afterwards.
	Handle TYPE_USER_STRUCT.
	(write_types_process_field): Handle TYPE_USER_STRUCT.
	(get_type_specifier): Move earlier in the file.
	(write_type_decl): New.
	(write_marker_function_name): New.
	(write_user_func_for_structure_ptr): New.
	(write_user_func_for_structure_body): New.
	(write_user_marking_functions): New.
	(write_func_for_structure): Call write_marker_function_name
	and write_type_decl.
	Do not call walk_type for TYPE_USER_STRUCT. Emit a call to the user
	function directly.
	Call write_user_marking_functions on TYPE_USER_STRUCTs.
	(write_types_local_user_process_field): New.
	(write_pch_user_walking_for_structure_body): New.
	(write_pch_user_walking_functions): New.
	(write_types_local_process_field): Handle TYPE_USER_STRUCT.
	(write_local_func_for_structure): Do not call walk_type for
	TYPE_USER_STRUCT. Instead, emit the call to gt_pch_nx directly.
	Call write_pch_user_walking_functions for TYPE_USER_STRUCTs.
	(write_root): Handle TYPE_USER_STRUCT.
	(vec_prefix_type): Remove.  Update all users.
	(note_def_vec): Remove.  Update all users.
	(dump_typekind): Handle TYPE_USER_STRUCT.
	(dump_type): Initialize SEEN_TYPES, if needed.
	Handle TYPE_USER_STRUCT.
	(dump_everything): Do not initialize SEEN_TYPES.
	* gengtype.h: Update copyright year.
	(enum typekind): Add TYPE_USER_STRUCT.
	(union_or_struct_p): Rename from UNION_OR_STRUCT_P.
	Convert into function.
	Add an overload taking const_type_p.
	Update all callers.
	(new_structure): Change second field to type enum typekind.
	Update all users.
	(find_structure): Likewise.
	(note_def_vec): Remove.
	(DEFVEC_OP): Remove.
	(DEFVEC_I): Remove.
	* ggc-page.c (gt_ggc_mx): Add entry points for marking
	'const char *&', 'unsigned char *&' and 'unsigned char&'.
	* ggc-zone.c (gt_ggc_mx): Add entry points for marking
	'const char *&' and 'unsigned char *&'.
	* stringpool.c (gt_pch_nx): Add entry points for marking
	'const char *&', 'unsigned char *&' and 'unsigned char&'.
	Add an entry point for the overload taking arguments 'unsigned char
	*', 'gt_pointer_operator' and 'void *'.
	* vec.h (struct vec_prefix): Remove GTY marker.
	(struct vec_t): Remove GTY((length)) attribute from field 'vec'.
	(gt_ggc_mx (vec_t<T> *)): New template function.
	(gt_pch_nx (vec_t<T> *)): New template function.
	(gt_pch_nx (vec_t<T *> *, gt_pointer_operator, void *)): New template
	function.
	(gt_pch_nx (vec_t<T> *, gt_pointer_operator, void *)): New template
	function.

	* basic-block.h (struct edge_def): Mark GTY((user)).
	Remove all GTY markers from fields.
	(gt_ggc_mx): Declare.
	(gt_pch_nx): Declare.
	* tree-cfg.c (gt_ggc_mx): New.
	(gt_pch_nx): New.

	* gengtype-lex.l (USER_GTY): Add pattern for "user".
	* gengtype-parse.c (option): Handle USER_GTY.
	(opts_have): New.
	(type): Call it.
	If the keyword 'user' is used, do not walk the fields
	of the structure.
	* gengtype.h (USER_GTY): Add.
	* doc/gty.texi: Update.

2012-08-14   Lawrence Crowl  <crowl@google.com>

	Merge cxx-conversion branch.  Implement C++ hash table.

	* hash-table.h: New. Implementation borrowed from libiberty/hashtab.c.
	* hash-table.c: Likewise.
	* tree-ssa-tail-merge.c: Include hash-table.h instead of hashtab.h.
	(static htab_t same_succ_htab): Change type to hash_table;
	move specification of helper functions from create call to declaration.
	Change users to invoke member functions.
	(same_succ_print_traverse): Make extern ssa_.... Change callers.
	Remove void* casting.
	(same_succ_hash): Likewise.
	(same_succ_equal): Likewise.
	(same_succ_delete): Likewise.
	* tree-ssa-threadupdate.c: Include hash-table.h.
	(struct local_info): Rename to ssa_local_info_t to avoid overloading
	the type name local_info with the variable name local_info.
	(static htab_t redirection_data): Change type to hash_table.
	Move specification of helper functions from create call to declaration.
	Change users to invoke member functions.
	(redirection_data_hash): Make extern ssa_.... Change callers.
	Remove void* casting.
	(redirection_data_eq): Likewise.
	(fix_duplicate_block_edges): Likewise.
	(create_duplicates): Likewise.
	(fixup_template_block): Likewise.
	(redirect_edges): Likewise.
	(lookup_redirection_data): Change types associated with the hash table
	from void* to their actual type. Remove unnecessary casts.
	* tree-ssa-ccp.c: Include hash-table.h.
	(typedef gimple_htab): New.  Uses hash_table.  Replace specific uses
	of htab_t with gimple_htab.  Change users to invoke member functions.
	Move specification of helper functions from create call to declaration.
	* tree-ssa-coalesce.c: Include hash-table.h instead of hashtab.h.
	(hash_ssa_name_by_var): Make extern. Remove void* casting.
	(eq_ssa_name_by_var): Likewise.
	(coalesce_ssa_name): Change type of local static htab_t ssa_name_hash
	to hash_table. Change users to invoke member functions.
	Move specification of helper functions from create call to declaration.
	* coverage.c: Include hash-table.h instead of hashtab.h.
	(static htab_t counts_hash): Change type to hash_table;
	move specification of helper functions from create call to declaration.
	Change users to invoke member functions.
	(htab_counts_entry_hash): Make extern. Rename with coverage_... instead
	of htab_... Remove void* casting.
	(htab_counts_entry_eq): Likewise.
	(htab_counts_entry_del): Likewise.
	* tree-ssa-pre.c: Include hash-table.h instead of hashtab.h.
	(static htab_t expression_to_id): Change type to hash_table.
	Move specification of helper functions from create call to declaration.
	Change users to invoke member functions.
	(static htab_t phi_translate_table): Likewise.
	(pre_expr_eq): Make extern ssa_.... Change callers.
	Remove void* casting.
	(pre_expr_hash): Likewise.
	(expr_pred_trans_hash): Likewise.
	(expr_pred_trans_eq): Likewise.
	(alloc_expression_id): Change types associated with the hash table
	from void* to their actual type. Remove unnecessary casts.
	(lookup_expression_id): Likewise.
	(phi_trans_lookup): Likewise.
	(phi_trans_add): Likewise.
	* stringpool.c: Rename uses of libcpp typedef hash_table to
	cpp_hash_table.
	* Makefile.in: Add hash-table.o to OBJS-libcommon-target.
	Add $(HASH_TABLE_H). Add new dependences on $(HASH_TABLE_H).

2012-08-14   Lawrence Crowl  <crowl@google.com>

	Merge from cxx-conversion branch.  Re-write double_int in C++.

	* hash-table.h
	(typedef double_int): Change to struct (POD).
	(double_int::make): New overloads for int to double-int conversion.
	(double_int::mask): New.
	(double_int::max_value): New.
	(double_int::min_value): New.
	(double_int::operator ++): New.
	(double_int::operator --): New.
	(double_int::operator *=): New.
	(double_int::operator +=): New.
	(double_int::operator -=): New.
	(double_int::to_signed): New.
	(double_int::to_unsigned): New.
	(double_int::fits_unsigned): New.
	(double_int::fits_signed): New.
	(double_int::fits): New.
	(double_int::trailing_zeros): New.
	(double_int::popcount): New.
	(double_int::multiple_of): New.
	(double_int::set_bit): New.
	(double_int::mul_with_sign): New.
	(double_int::operator * (binary)): New.
	(double_int::operator + (binary)): New.
	(double_int::operator - (binary)): New.
	(double_int::operator - (unary)): New.
	(double_int::operator ~ (unary)): New.
	(double_int::operator & (binary)): New.
	(double_int::operator | (binary)): New.
	(double_int::operator ^ (binary)): New.
	(double_int::and_not): New.
	(double_int::lshift): New.
	(double_int::rshift): New.
	(double_int::alshift): New.
	(double_int::arshift): New.
	(double_int::llshift): New.
	(double_int::lrshift): New.
	(double_int::lrotate): New.
	(double_int::rrotate): New.
	(double_int::div): New.
	(double_int::sdiv): New.
	(double_int::udiv): New.
	(double_int::mod): New.
	(double_int::smod): New.
	(double_int::umod): New.
	(double_int::divmod): New.
	(double_int::sdivmod): New.
	(double_int::udivmod): New.
	(double_int::ext): New.
	(double_int::zext): New.
	(double_int::sext): New.
	(double_int::is_zero): New.
	(double_int::is_one): New.
	(double_int::is_minus_one): New.
	(double_int::is_negative): New.
	(double_int::cmp): New.
	(double_int::ucmp): New.
	(double_int::scmp): New.
	(double_int::ult): New.
	(double_int::ugt): New.
	(double_int::slt): New.
	(double_int::sgt): New.
	(double_int::max): New.
	(double_int::smax): New.
	(double_int::umax): New.
	(double_int::min): New.
	(double_int::smin): New.
	(double_int::umin): New.
	(double_int::operator ==): New.
	(double_int::operator !=): New.
	(shwi_to_double_int): Change implementation to use member function.
	(double_int_minus_one): Likewise.
	(double_int_zero): Likewise.
	(double_int_one): Likewise.
	(double_int_two): Likewise.
	(double_int_ten): Likewise.
	(uhwi_to_double_int): Likewise.
	(double_int_to_shwi): Likewise.
	(double_int_to_uhwi): Likewise.
	(double_int_fits_in_uhwi_p): Likewise.
	(double_int_fits_in_shwi_p): Likewise.
	(double_int_fits_in_hwi_p): Likewise.
	(double_int_mul): Likewise.
	(double_int_mul_with_sign): Likewise.
	(double_int_add): Likewise.
	(double_int_sub): Likewise.
	(double_int_neg): Likewise.
	(double_int_div): Likewise.
	(double_int_sdiv): Likewise.
	(double_int_udiv): Likewise.
	(double_int_mod): Likewise.
	(double_int_smod): Likewise.
	(double_int_umod): Likewise.
	(double_int_divmod): Likewise.
	(double_int_sdivmod): Likewise.
	(double_int_udivmod): Likewise.
	(double_int_multiple_of): Likewise.
	(double_int_setbit): Likewise.
	(double_int_ctz): Likewise.
	(double_int_not): Likewise.
	(double_int_ior): Likewise.
	(double_int_and): Likewise.
	(double_int_and_not): Likewise.
	(double_int_xor): Likewise.
	(double_int_lshift): Likewise.
	(double_int_rshift): Likewise.
	(double_int_lrotate): Likewise.
	(double_int_rrotate): Likewise.
	(double_int_cmp): Likewise.
	(double_int_scmp): Likewise.
	(double_int_ucmp): Likewise.
	(double_int_max): Likewise.
	(double_int_smax): Likewise.
	(double_int_umax): Likewise.
	(double_int_min): Likewise.
	(double_int_smin): Likewise.
	(double_int_umin): Likewise.
	(double_int_ext): Likewise.
	(double_int_sext): Likewise.
	(double_int_zext): Likewise.
	(double_int_mask): Likewise.
	(double_int_max_value): Likewise.
	(double_int_min_value): Likewise.
	(double_int_zero_p): Likewise.
	(double_int_one_p): Likewise.
	(double_int_minus_one_p): Likewise.
	(double_int_equal_p): Likewise.
	(double_int_popcount): Likewise.
	* hash-table.c
	(double_int_mask): Reuse implementation for double_int::mask.
	(double_int_max_value): Likewise.
	(double_int_min_value): Likewise.
	(double_int_ext): Likewise.
	(double_int_zext): Likewise.
	(double_int_sext): Likewise.
	(double_int_mul_with_sign): Likewise.
	(double_int_divmod): Likewise.
	(double_int_sdivmod): Likewise.
	(double_int_udivmod): Likewise.
	(double_int_div): Likewise.
	(double_int_sdiv): Likewise.
	(double_int_udiv): Likewise.
	(double_int_mod): Likewise.
	(double_int_smod): Likewise.
	(double_int_umod): Likewise.
	(double_int_multiple_of): Likewise.
	(double_int_lshift): Likewise.
	(double_int_rshift): Likewise.
	(double_int_lrotate): Likewise.
	(double_int_rrotate): Likewise.
	(double_int_cmp): Likewise.
	(double_int_ucmp): Likewise.
	(double_int_scmp): Likewise.
	(double_int_max): Likewise.
	(double_int_smax): Likewise.
	(double_int_umax): Likewise.
	(double_int_min): Likewise.
	(double_int_smin): Likewise.
	(double_int_umin): Likewise.
	(double_int_min): Likewise.
	(double_int_min): Likewise.
	(double_int_min): Likewise.
	(double_int_min): Likewise.
	(double_int_min): Likewise.
	(double_int_min): Likewise.
	(double_int::alshift): New.
	(double_int::arshift): New.
	(double_int::llshift): New.
	(double_int::lrshift): New.
	(double_int::ult): New.
	(double_int::ugt): New.
	(double_int::slt): New.
	(double_int::sgt): New.
	(double_int_setbit): Reuse implementation for double_int::set_bit,
	which avoids a name conflict with a macro.
	(double_int_double_int_ctz): Reuse implementation for
	double_int::trailing_zeros.
	(double_int_fits_in_shwi_p): Reuse implementation for
	double_int::fits_signed.
	(double_int_fits_in_hwi_p): Reuse implementation for double_int::fits.
	(double_int_mul): Reuse implementation for binary
	double_int::operator *.
	(double_int_add): Likewise.
	(double_int_sub): Likewise.
	(double_int_neg): Reuse implementation for unary
	double_int::operator -.
	(double_int_max_value): Likewise.
	* fixed-value.c: Change to use member functions introduced above.

2012-08-14   Lawrence Crowl  <crowl@google.com>

	Merge cxx-conversion branch.  Support tree macro calling
	from gdb.

	* tree.h (tree_check): New.
	(TREE_CHECK): Use inline function above instead of __extension__.
	(tree_not_check): New.
	(TREE_NOT_CHECK): Use inline function above instead of __extension__.
	(tree_check2): New.
	(TREE_CHECK2): Use inline function above instead of __extension__.
	(tree_not_check2): New.
	(TREE_NOT_CHECK2): Use inline function above instead of __extension__.
	(tree_check3): New.
	(TREE_CHECK3): Use inline function above instead of __extension__.
	(tree_not_check3): New.
	(TREE_NOT_CHECK3): Use inline function above instead of __extension__.
	(tree_check4): New.
	(TREE_CHECK4): Use inline function above instead of __extension__.
	(tree_not_check4): New.
	(TREE_NOT_CHECK4): Use inline function above instead of __extension__.
	(tree_check5): New.
	(TREE_CHECK5): Use inline function above instead of __extension__.
	(tree_not_check5): New.
	(TREE_NOT_CHECK5): Use inline function above instead of __extension__.
	(contains_struct_check): New.
	(CONTAINS_STRUCT_CHECK): Use inline function above instead of
	__extension__.
	(tree_class_check): New.
	(TREE_CLASS_CHECK): Use inline function above instead of __extension__.
	(tree_range_check): New.
	(TREE_RANGE_CHECK): Use inline function above instead of __extension__.
	(omp_clause_subcode_check): New.
	(OMP_CLAUSE_SUBCODE_CHECK): Use inline function above instead of
	__extension__.
	(omp_clause_range_check): New.
	(OMP_CLAUSE_RANGE_CHECK): Use inline function above instead of
	__extension__.
	(expr_check): New.
	(EXPR_CHECK): Use inline function above instead of __extension__.
	(non_type_check): New.
	(NON_TYPE_CHECK): Use inline function above instead of __extension__.
	(tree_vec_elt_check): New.
	(TREE_VEC_ELT_CHECK): Use inline function above instead of
	__extension__.
	(omp_clause_elt_check): New.
	(OMP_CLAUSE_ELT_CHECK): Use inline function above instead of
	__extension__.
	(tree_operand_check): New.
	(TREE_OPERAND_CHECK): Use inline function above instead of
	__extension__.
	(tree_operand_check_code): New.
	(TREE_OPERAND_CHECK_CODE): Use inline function above instead of
	__extension__.
	(TREE_CHAIN): Simplify implementation.
	(TREE_TYPE): Simplify implementation.
	(tree_operand_length): Move for compilation dependences.
	* gdbinit.in: (macro define __FILE__): New.
	(macro define __LINE__): New.
	(skip "tree.h"): New.

gcc/cp/ChangeLog
2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.  Re-write VEC in C++.

	* call.c (add_function_candidate): Remove const qualifier
	from call to VEC_index.

2012-08-14   Diego Novillo  <dnovillo@google.com>

	Merge from cxx-conversion branch.  Configury.

	* go-c.h: Remove all handlers of ENABLE_BUILD_WITH_CXX.
	* go-gcc.cc: Likewise.
	* go-system.h: Likewise.

From-SVN: r190402

1 files changed, 210 insertions, 90 deletions

diff --git a/gcc/double-int.c b/gcc/double-int.c
index ea518e3..2f48f2b 100644
--- a/gcc/double-int.c
+++ b/gcc/double-int.c
@@ -610,7 +610,7 @@ div_and_round_double (unsigned code, int uns,
 /* Returns mask for PREC bits.  */
 
 double_int
-double_int_mask (unsigned prec)
+double_int::mask (unsigned prec)
 {
   unsigned HOST_WIDE_INT m;
   double_int mask;
@@ -635,20 +635,20 @@ double_int_mask (unsigned prec)
    of precision PREC.  */
 
 double_int
-double_int_max_value (unsigned int prec, bool uns)
+double_int::max_value (unsigned int prec, bool uns)
 {
-  return double_int_mask (prec - (uns ? 0 : 1));
+  return double_int::mask (prec - (uns ? 0 : 1));
 }
 
 /* Returns a minimum value for signed or unsigned integer
    of precision PREC.  */
 
 double_int
-double_int_min_value (unsigned int prec, bool uns)
+double_int::min_value (unsigned int prec, bool uns)
 {
   if (uns)
     return double_int_zero;
-  return double_int_lshift (double_int_one, prec - 1, prec, false);
+  return double_int_one.lshift (prec - 1, prec, false);
 }
 
 /* Clears the bits of CST over the precision PREC.  If UNS is false, the bits
@@ -659,20 +659,21 @@ double_int_min_value (unsigned int prec, bool uns)
    of CST, with the given signedness.  */
 
 double_int
-double_int_ext (double_int cst, unsigned prec, bool uns)
+double_int::ext (unsigned prec, bool uns) const
 {
   if (uns)
-    return double_int_zext (cst, prec);
+    return this->zext (prec);
   else
-    return double_int_sext (cst, prec);
+    return this->sext (prec);
 }
 
-/* The same as double_int_ext with UNS = true.  */
+/* The same as double_int::ext with UNS = true.  */
 
 double_int
-double_int_zext (double_int cst, unsigned prec)
+double_int::zext (unsigned prec) const
 {
-  double_int mask = double_int_mask (prec);
+  const double_int &cst = *this;
+  double_int mask = double_int::mask (prec);
   double_int r;
 
   r.low = cst.low & mask.low;
@@ -681,12 +682,13 @@ double_int_zext (double_int cst, unsigned prec)
   return r;
 }
 
-/* The same as double_int_ext with UNS = false.  */
+/* The same as double_int::ext with UNS = false.  */
 
 double_int
-double_int_sext (double_int cst, unsigned prec)
+double_int::sext (unsigned prec) const
 {
-  double_int mask = double_int_mask (prec);
+  const double_int &cst = *this;
+  double_int mask = double_int::mask (prec);
   double_int r;
   unsigned HOST_WIDE_INT snum;
 
@@ -714,8 +716,9 @@ double_int_sext (double_int cst, unsigned prec)
 /* Returns true if CST fits in signed HOST_WIDE_INT.  */
 
 bool
-double_int_fits_in_shwi_p (double_int cst)
+double_int::fits_signed () const
 {
+  const double_int &cst = *this;
   if (cst.high == 0)
     return (HOST_WIDE_INT) cst.low >= 0;
   else if (cst.high == -1)
@@ -728,19 +731,20 @@ double_int_fits_in_shwi_p (double_int cst)
    unsigned HOST_WIDE_INT if UNS is true.  */
 
 bool
-double_int_fits_in_hwi_p (double_int cst, bool uns)
+double_int::fits (bool uns) const
 {
   if (uns)
-    return double_int_fits_in_uhwi_p (cst);
+    return this->fits_unsigned ();
   else
-    return double_int_fits_in_shwi_p (cst);
+    return this->fits_signed ();
 }
 
 /* Returns A * B.  */
 
 double_int
-double_int_mul (double_int a, double_int b)
+double_int::operator * (double_int b) const
 {
+  const double_int &a = *this;
   double_int ret;
   mul_double (a.low, a.high, b.low, b.high, &ret.low, &ret.high);
   return ret;
@@ -750,9 +754,9 @@ double_int_mul (double_int a, double_int b)
    *OVERFLOW is set to nonzero.  */
 
 double_int
-double_int_mul_with_sign (double_int a, double_int b,
-                          bool unsigned_p, int *overflow)
+double_int::mul_with_sign (double_int b, bool unsigned_p, int *overflow) const
 {
+  const double_int &a = *this;
   double_int ret;
   *overflow = mul_double_with_sign (a.low, a.high, b.low, b.high,
                                     &ret.low, &ret.high, unsigned_p);
@@ -762,8 +766,9 @@ double_int_mul_with_sign (double_int a, double_int b,
 /* Returns A + B.  */
 
 double_int
-double_int_add (double_int a, double_int b)
+double_int::operator + (double_int b) const
 {
+  const double_int &a = *this;
   double_int ret;
   add_double (a.low, a.high, b.low, b.high, &ret.low, &ret.high);
   return ret;
@@ -772,8 +777,9 @@ double_int_add (double_int a, double_int b)
 /* Returns A - B.  */
 
 double_int
-double_int_sub (double_int a, double_int b)
+double_int::operator - (double_int b) const
 {
+  const double_int &a = *this;
   double_int ret;
   neg_double (b.low, b.high, &b.low, &b.high);
   add_double (a.low, a.high, b.low, b.high, &ret.low, &ret.high);
@@ -783,8 +789,9 @@ double_int_sub (double_int a, double_int b)
 /* Returns -A.  */
 
 double_int
-double_int_neg (double_int a)
+double_int::operator - () const
 {
+  const double_int &a = *this;
   double_int ret;
   neg_double (a.low, a.high, &ret.low, &ret.high);
   return ret;
@@ -796,9 +803,10 @@ double_int_neg (double_int a)
    stored to MOD.  */
 
 double_int
-double_int_divmod (double_int a, double_int b, bool uns, unsigned code,
-		   double_int *mod)
+double_int::divmod (double_int b, bool uns, unsigned code,
+		    double_int *mod) const
 {
+  const double_int &a = *this;
   double_int ret;
 
   div_and_round_double (code, uns, a.low, a.high,
@@ -807,20 +815,20 @@ double_int_divmod (double_int a, double_int b, bool uns, unsigned code,
   return ret;
 }
 
-/* The same as double_int_divmod with UNS = false.  */
+/* The same as double_int::divmod with UNS = false.  */
 
 double_int
-double_int_sdivmod (double_int a, double_int b, unsigned code, double_int *mod)
+double_int::sdivmod (double_int b, unsigned code, double_int *mod) const
 {
-  return double_int_divmod (a, b, false, code, mod);
+  return this->divmod (b, false, code, mod);
 }
 
-/* The same as double_int_divmod with UNS = true.  */
+/* The same as double_int::divmod with UNS = true.  */
 
 double_int
-double_int_udivmod (double_int a, double_int b, unsigned code, double_int *mod)
+double_int::udivmod (double_int b, unsigned code, double_int *mod) const
 {
-  return double_int_divmod (a, b, true, code, mod);
+  return this->divmod (b, true, code, mod);
 }
 
 /* Returns A / B (computed as unsigned depending on UNS, and rounded as
@@ -828,27 +836,27 @@ double_int_udivmod (double_int a, double_int b, unsigned code, double_int *mod)
    must be included before tree.h.  */
 
 double_int
-double_int_div (double_int a, double_int b, bool uns, unsigned code)
+double_int::div (double_int b, bool uns, unsigned code) const
 {
   double_int mod;
 
-  return double_int_divmod (a, b, uns, code, &mod);
+  return this->divmod (b, uns, code, &mod);
 }
 
-/* The same as double_int_div with UNS = false.  */
+/* The same as double_int::div with UNS = false.  */
 
 double_int
-double_int_sdiv (double_int a, double_int b, unsigned code)
+double_int::sdiv (double_int b, unsigned code) const
 {
-  return double_int_div (a, b, false, code);
+  return this->div (b, false, code);
 }
 
-/* The same as double_int_div with UNS = true.  */
+/* The same as double_int::div with UNS = true.  */
 
 double_int
-double_int_udiv (double_int a, double_int b, unsigned code)
+double_int::udiv (double_int b, unsigned code) const
 {
-  return double_int_div (a, b, true, code);
+  return this->div (b, true, code);
 }
 
 /* Returns A % B (computed as unsigned depending on UNS, and rounded as
@@ -856,28 +864,28 @@ double_int_udiv (double_int a, double_int b, unsigned code)
    must be included before tree.h.  */
 
 double_int
-double_int_mod (double_int a, double_int b, bool uns, unsigned code)
+double_int::mod (double_int b, bool uns, unsigned code) const
 {
   double_int mod;
 
-  double_int_divmod (a, b, uns, code, &mod);
+  this->divmod (b, uns, code, &mod);
   return mod;
 }
 
-/* The same as double_int_mod with UNS = false.  */
+/* The same as double_int::mod with UNS = false.  */
 
 double_int
-double_int_smod (double_int a, double_int b, unsigned code)
+double_int::smod (double_int b, unsigned code) const
 {
-  return double_int_mod (a, b, false, code);
+  return this->mod (b, false, code);
 }
 
-/* The same as double_int_mod with UNS = true.  */
+/* The same as double_int::mod with UNS = true.  */
 
 double_int
-double_int_umod (double_int a, double_int b, unsigned code)
+double_int::umod (double_int b, unsigned code) const
 {
-  return double_int_mod (a, b, true, code);
+  return this->mod (b, true, code);
 }
 
 /* Return TRUE iff PRODUCT is an integral multiple of FACTOR, and return
@@ -885,13 +893,13 @@ double_int_umod (double_int a, double_int b, unsigned code)
    unchanged.  */
 
 bool
-double_int_multiple_of (double_int product, double_int factor,
-			bool unsigned_p, double_int *multiple)
+double_int::multiple_of (double_int factor,
+			 bool unsigned_p, double_int *multiple) const
 {
   double_int remainder;
-  double_int quotient = double_int_divmod (product, factor, unsigned_p,
+  double_int quotient = this->divmod (factor, unsigned_p,
 					   TRUNC_DIV_EXPR, &remainder);
-  if (double_int_zero_p (remainder))
+  if (remainder.is_zero ())
     {
       *multiple = quotient;
       return true;
@@ -902,8 +910,9 @@ double_int_multiple_of (double_int product, double_int factor,
 
 /* Set BITPOS bit in A.  */
 double_int
-double_int_setbit (double_int a, unsigned bitpos)
+double_int::set_bit (unsigned bitpos) const
 {
+  double_int a = *this;
   if (bitpos < HOST_BITS_PER_WIDE_INT)
     a.low |= (unsigned HOST_WIDE_INT) 1 << bitpos;
   else
@@ -914,8 +923,9 @@ double_int_setbit (double_int a, unsigned bitpos)
 
 /* Count trailing zeros in A.  */
 int
-double_int_ctz (double_int a)
+double_int::trailing_zeros () const
 {
+  const double_int &a = *this;
   unsigned HOST_WIDE_INT w = a.low ? a.low : (unsigned HOST_WIDE_INT) a.high;
   unsigned bits = a.low ? 0 : HOST_BITS_PER_WIDE_INT;
   if (!w)
@@ -929,30 +939,76 @@ double_int_ctz (double_int a)
    otherwise use logical shift.  */
 
 double_int
-double_int_lshift (double_int a, HOST_WIDE_INT count, unsigned int prec, bool arith)
+double_int::lshift (HOST_WIDE_INT count, unsigned int prec, bool arith) const
 {
+  const double_int &a = *this;
   double_int ret;
   lshift_double (a.low, a.high, count, prec, &ret.low, &ret.high, arith);
   return ret;
 }
 
-/* Shift A rigth by COUNT places keeping only PREC bits of result.  Shift
+/* Shift A right by COUNT places keeping only PREC bits of result.  Shift
    left if COUNT is negative.  ARITH true specifies arithmetic shifting;
    otherwise use logical shift.  */
 
 double_int
-double_int_rshift (double_int a, HOST_WIDE_INT count, unsigned int prec, bool arith)
+double_int::rshift (HOST_WIDE_INT count, unsigned int prec, bool arith) const
 {
+  const double_int &a = *this;
   double_int ret;
   lshift_double (a.low, a.high, -count, prec, &ret.low, &ret.high, arith);
   return ret;
 }
 
+/* Arithmetic shift A left by COUNT places keeping only PREC bits of result.
+   Shift right if COUNT is negative.  */
+
+double_int
+double_int::alshift (HOST_WIDE_INT count, unsigned int prec) const
+{
+  double_int r;
+  lshift_double (low, high, count, prec, &r.low, &r.high, true);
+  return r;
+}
+
+/* Arithmetic shift A right by COUNT places keeping only PREC bits of result.
+   Shift left if COUNT is negative.  */
+
+double_int
+double_int::arshift (HOST_WIDE_INT count, unsigned int prec) const
+{
+  double_int r;
+  lshift_double (low, high, -count, prec, &r.low, &r.high, true);
+  return r;
+}
+
+/* Logical shift A left by COUNT places keeping only PREC bits of result.
+   Shift right if COUNT is negative.  */
+
+double_int
+double_int::llshift (HOST_WIDE_INT count, unsigned int prec) const
+{
+  double_int r;
+  lshift_double (low, high, count, prec, &r.low, &r.high, false);
+  return r;
+}
+
+/* Logical shift A right by COUNT places keeping only PREC bits of result.
+   Shift left if COUNT is negative.  */
+
+double_int
+double_int::lrshift (HOST_WIDE_INT count, unsigned int prec) const
+{
+  double_int r;
+  lshift_double (low, high, -count, prec, &r.low, &r.high, false);
+  return r;
+}
+
 /* Rotate  A left by COUNT places keeping only PREC bits of result.
    Rotate right if COUNT is negative.  */
 
 double_int
-double_int_lrotate (double_int a, HOST_WIDE_INT count, unsigned int prec)
+double_int::lrotate (HOST_WIDE_INT count, unsigned int prec) const
 {
   double_int t1, t2;
 
@@ -960,17 +1016,17 @@ double_int_lrotate (double_int a, HOST_WIDE_INT count, unsigned int prec)
   if (count < 0)
     count += prec;
 
-  t1 = double_int_lshift (a, count, prec, false);
-  t2 = double_int_rshift (a, prec - count, prec, false);
+  t1 = this->lshift (count, prec, false);
+  t2 = this->rshift (prec - count, prec, false);
 
-  return double_int_ior (t1, t2);
+  return t1 | t2;
 }
 
 /* Rotate A rigth by COUNT places keeping only PREC bits of result.
    Rotate right if COUNT is negative.  */
 
 double_int
-double_int_rrotate (double_int a, HOST_WIDE_INT count, unsigned int prec)
+double_int::rrotate (HOST_WIDE_INT count, unsigned int prec) const
 {
   double_int t1, t2;
 
@@ -978,30 +1034,31 @@ double_int_rrotate (double_int a, HOST_WIDE_INT count, unsigned int prec)
   if (count < 0)
     count += prec;
 
-  t1 = double_int_rshift (a, count, prec, false);
-  t2 = double_int_lshift (a, prec - count, prec, false);
+  t1 = this->rshift (count, prec, false);
+  t2 = this->lshift (prec - count, prec, false);
 
-  return double_int_ior (t1, t2);
+  return t1 | t2;
 }
 
 /* Returns -1 if A < B, 0 if A == B and 1 if A > B.  Signedness of the
    comparison is given by UNS.  */
 
 int
-double_int_cmp (double_int a, double_int b, bool uns)
+double_int::cmp (double_int b, bool uns) const
 {
   if (uns)
-    return double_int_ucmp (a, b);
+    return this->ucmp (b);
   else
-    return double_int_scmp (a, b);
+    return this->scmp (b);
 }
 
 /* Compares two unsigned values A and B.  Returns -1 if A < B, 0 if A == B,
    and 1 if A > B.  */
 
 int
-double_int_ucmp (double_int a, double_int b)
+double_int::ucmp (double_int b) const
 {
+  const double_int &a = *this;
   if ((unsigned HOST_WIDE_INT) a.high < (unsigned HOST_WIDE_INT) b.high)
     return -1;
   if ((unsigned HOST_WIDE_INT) a.high > (unsigned HOST_WIDE_INT) b.high)
@@ -1018,8 +1075,9 @@ double_int_ucmp (double_int a, double_int b)
    and 1 if A > B.  */
 
 int
-double_int_scmp (double_int a, double_int b)
+double_int::scmp (double_int b) const
 {
+  const double_int &a = *this;
   if (a.high < b.high)
     return -1;
   if (a.high > b.high)
@@ -1032,49 +1090,111 @@ double_int_scmp (double_int a, double_int b)
   return 0;
 }
 
+/* Compares two unsigned values A and B for less-than.  */
+
+bool
+double_int::ult (double_int b) const
+{
+  if ((unsigned HOST_WIDE_INT) high < (unsigned HOST_WIDE_INT) b.high)
+    return true;
+  if ((unsigned HOST_WIDE_INT) high > (unsigned HOST_WIDE_INT) b.high)
+    return false;
+  if (low < b.low)
+    return true;
+  return false;
+}
+
+/* Compares two unsigned values A and B for greater-than.  */
+
+bool
+double_int::ugt (double_int b) const
+{
+  if ((unsigned HOST_WIDE_INT) high > (unsigned HOST_WIDE_INT) b.high)
+    return true;
+  if ((unsigned HOST_WIDE_INT) high < (unsigned HOST_WIDE_INT) b.high)
+    return false;
+  if (low > b.low)
+    return true;
+  return false;
+}
+
+/* Compares two signed values A and B for less-than.  */
+
+bool
+double_int::slt (double_int b) const
+{
+  if (high < b.high)
+    return true;
+  if (high > b.high)
+    return false;
+  if (low < b.low)
+    return true;
+  return false;
+}
+
+/* Compares two signed values A and B for greater-than.  */
+
+bool
+double_int::sgt (double_int b) const
+{
+  if (high > b.high)
+    return true;
+  if (high < b.high)
+    return false;
+  if (low > b.low)
+    return true;
+  return false;
+}
+
+
 /* Compares two values A and B.  Returns max value.  Signedness of the
    comparison is given by UNS.  */
 
 double_int
-double_int_max (double_int a, double_int b, bool uns)
+double_int::max (double_int b, bool uns)
 {
-  return (double_int_cmp (a, b, uns) == 1) ? a : b;
+  return (this->cmp (b, uns) == 1) ? *this : b;
 }
 
 /* Compares two signed values A and B.  Returns max value.  */
 
-double_int double_int_smax (double_int a, double_int b)
+double_int
+double_int::smax (double_int b)
 {
-  return (double_int_scmp (a, b) == 1) ? a : b;
+  return (this->scmp (b) == 1) ? *this : b;
 }
 
 /* Compares two unsigned values A and B.  Returns max value.  */
 
-double_int double_int_umax (double_int a, double_int b)
+double_int
+double_int::umax (double_int b)
 {
-  return (double_int_ucmp (a, b) == 1) ? a : b;
+  return (this->ucmp (b) == 1) ? *this : b;
 }
 
 /* Compares two values A and B.  Returns mix value.  Signedness of the
    comparison is given by UNS.  */
 
-double_int double_int_min (double_int a, double_int b, bool uns)
+double_int
+double_int::min (double_int b, bool uns)
 {
-  return (double_int_cmp (a, b, uns) == -1) ? a : b;
+  return (this->cmp (b, uns) == -1) ? *this : b;
 }
 
 /* Compares two signed values A and B.  Returns min value.  */
 
-double_int double_int_smin (double_int a, double_int b)
+double_int
+double_int::smin (double_int b)
 {
-  return (double_int_scmp (a, b) == -1) ? a : b;
+  return (this->scmp (b) == -1) ? *this : b;
 }
 
 /* Compares two unsigned values A and B.  Returns min value.  */
 
-double_int double_int_umin (double_int a, double_int b)
+double_int
+double_int::umin (double_int b)
 {
-  return (double_int_ucmp (a, b) == -1) ? a : b;
+  return (this->ucmp (b) == -1) ? *this : b;
 }
 
 /* Splits last digit of *CST (taken as unsigned) in BASE and returns it.  */
@@ -1102,19 +1222,19 @@ dump_double_int (FILE *file, double_int cst, bool uns)
   unsigned digits[100], n;
   int i;
 
-  if (double_int_zero_p (cst))
+  if (cst.is_zero ())
     {
       fprintf (file, "0");
       return;
     }
 
-  if (!uns && double_int_negative_p (cst))
+  if (!uns && cst.is_negative ())
     {
       fprintf (file, "-");
-      cst = double_int_neg (cst);
+      cst = -cst;
     }
 
-  for (n = 0; !double_int_zero_p (cst); n++)
+  for (n = 0; !cst.is_zero (); n++)
     digits[n] = double_int_split_digit (&cst, 10);
   for (i = n - 1; i >= 0; i--)
     fprintf (file, "%u", digits[i]);
@@ -1130,10 +1250,10 @@ mpz_set_double_int (mpz_t result, double_int val, bool uns)
   bool negate = false;
   unsigned HOST_WIDE_INT vp[2];
 
-  if (!uns && double_int_negative_p (val))
+  if (!uns && val.is_negative ())
     {
       negate = true;
-      val = double_int_neg (val);
+      val = -val;
     }
 
   vp[0] = val.low;
@@ -1191,9 +1311,9 @@ mpz_get_double_int (const_tree type, mpz_t val, bool wrap)
   res.low = vp[0];
   res.high = (HOST_WIDE_INT) vp[1];
 
-  res = double_int_ext (res, TYPE_PRECISION (type), TYPE_UNSIGNED (type));
+  res = res.ext (TYPE_PRECISION (type), TYPE_UNSIGNED (type));
   if (mpz_sgn (val) < 0)
-    res = double_int_neg (res);
+    res = -res;
 
   return res;
 }