Factor unrelated declarations out of tree.h.

This patch applies the rule that functions defined in FOO.c must be
declared in FOO.h. One of the worst offenders in the code base is
tree.h, unsurprisingly.

The patch creates several new headers: attribs.h calls.h fold-const.h
gcc-symtab.h print-rtl.h print-tree.h stmt.h stor-layout.h stringpool.h
tree-nested.h tree-object-size.h varasm.h.

Functions in each corresponding .c file got moved to those headers and
others that already existed. I wanted to make this patch as mechanical
as possible, so I made no attempt to fix problems like having
build_addr defined in tree-inline.c. I left that for later.

There were some declarations that I could not move out of tree.h
because of header poisoning or the use of target macros. We forbid the
inclusion of things like expr.h from FE files. While that's a
reasonable idea, the FE file *still* manage to at expr.c functionality
because the declarations they want to use were defined in tree.h.

The affected files are builtins.h, emit-rtl.h and expr.h.

If that functionality is allowed to be accessed from the FEs,
then I will later move those functions out of expr.c into tree.c.
I have moved these declarations to the bottom of tree.h so they
are easy to identify later.

There is a namespace collision with libcpp. The file gcc/symtab.c
cannot use gcc/symtab.h because the #include command picks up
libcpp/include/symtab.h first. So I named this file gcc-symtab.h
for now.

Finally, I added a new header to PLUGIN_HEADERS to account for the
tree.h refactoring. I did not add all headers factored out of tree.h
because it is unclear (and impossible to tell) what plugins need.
This adds the one header used by the plugins in the testsuite.

This will be changing quite dramatically as we progress with the header
refactoring.

This patch should offer some minimal incremental build advantages
by reducing the size of tree.h. Changes that would otherwise
affected tree.h, will now go to other headers which are less
frequently included.

	* tree.h: Include fold-const.h.
	(aggregate_value_p): Moved to function.h.
	(alloca_call_p): Moved to calls.h.
	(allocate_struct_function): Moved to function.h.
	(apply_tm_attr): Moved to attribs.h.
	(array_at_struct_end_p): Moved to expr.h.
	(array_ref_element_size): Moved to tree-dfa.h.
	(array_ref_low_bound): Moved to tree-dfa.h.
	(array_ref_up_bound): Moved to tree.h.
	(assemble_alias): Moved to cgraph.h.
	(bit_from_pos): Moved to stor-layout.h.
	(build_addr): Moved to tree-nested.h.
	(build_duplicate_type): Moved to tree-inline.h.
	(build_fold_addr_expr): Moved to fold-const.h.
	(build_fold_addr_expr_with_type): Moved to fold-const.h.
	(build_fold_addr_expr_with_type_loc): Moved to fold-const.h.
	(build_fold_indirect_ref): Moved to fold-const.h.
	(build_fold_indirect_ref_loc): Moved to fold-const.h.
	(build_personality_function): Moved to tree.h.
	(build_range_check): Moved to fold-const.h.
	(build_simple_mem_ref): Moved to fold-const.h.
	(build_simple_mem_ref_loc): Moved to fold-const.h.
	(build_tm_abort_call): Moved to trans-mem.h.
	(byte_from_pos): Moved to stor-layout.h.
	(call_expr_flags): Moved to calls.h.
	(can_move_by_pieces): Moved to expr.h.
	(categorize_ctor_elements): Moved to expr.h.
	(change_decl_assembler_name): Moved to gcc-symtab.h.
	(combine_comparisons): Moved to fold-const.h.
	(complete_ctor_at_level_p): Moved to tree.h.
	(component_ref_field_offset): Moved to tree-dfa.h.
	(compute_builtin_object_size): Moved to tree-object-size.h.
	(compute_record_mode): Moved to stor-layout.h.
	(constant_boolean_node): Moved to fold-const.h.
	(constructor_static_from_elts_p): Moved to varasm.h.
	(cxx11_attribute_p): Moved to attribs.h.
	(debug_body): Moved to print-tree.h.
	(debug_find_tree): Moved to tree-inline.h.
	(debug_fold_checksum): Moved to fold-const.h.
	(debug_head): Moved to print-tree.h.
	(debug_head): Moved to print-tree.h.
	(debug_raw): Moved to print-tree.h.
	(debug_tree): Moved to print-tree.h.
	(debug_vec_tree): Moved to print-tree.h.
	(debug_verbose): Moved to print-tree.h.
	(debug_verbose): Moved to print-tree.h.
	(decl_attributes): Moved to attribs.h.
	(decl_binds_to_current_def_p): Moved to varasm.h.
	(decl_default_tls_model): Moved to varasm.h.
	(decl_replaceable_p): Moved to varasm.h.
	(div_if_zero_remainder): Moved to fold-const.h.
	(double_int mem_ref_offset): Moved to fold-const.h.
	(dump_addr): Moved to print-tree.h.
	(element_precision): Moved to machmode.h.
	(expand_dummy_function_end): Moved to function.h.
	(expand_function_end): Moved to function.h.
	(expand_function_start): Moved to function.h.
	(expand_label): Moved to stmt.h.
	(expr_first): Moved to tree-iterator.h.
	(expr_last): Moved to tree-iterator.h.
	(finalize_size_functions): Moved to stor-layout.h.
	(finish_builtin_struct): Moved to stor-layout.h.
	(finish_record_layout): Moved to stor-layout.h.
	(fixup_signed_type): Moved to stor-layout.h.
	(fixup_unsigned_type): Moved to stor-layout.h.
	(flags_from_decl_or_type): Moved to calls.h.
	(fold): Moved to fold-const.h.
	(fold_abs_const): Moved to fold-const.h.
	(fold_binary): Moved to fold-const.h.
	(fold_binary_loc): Moved to fold-const.h.
	(fold_binary_to_constant): Moved to fold-const.h.
	(fold_build1): Moved to fold-const.h.
	(fold_build1_initializer_loc): Moved to fold-const.h.
	(fold_build1_loc): Moved to fold-const.h.
	(fold_build1_stat_loc): Moved to fold-const.h.
	(fold_build2): Moved to fold-const.h.
	(fold_build2_initializer_loc): Moved to fold-const.h.
	(fold_build2_loc): Moved to fold-const.h.
	(fold_build2_stat_loc): Moved to fold-const.h.
	(fold_build3): Moved to fold-const.h.
	(fold_build3_loc): Moved to fold-const.h.
	(fold_build3_stat_loc): Moved to fold-const.h.
	(fold_build_call_array): Moved to fold-const.h.
	(fold_build_call_array_initializer): Moved to fold-const.h.
	(fold_build_call_array_initializer_loc): Moved to fold-const.h.
	(fold_build_call_array_loc): Moved to fold-const.h.
	(fold_build_cleanup_point_expr): Moved to fold-const.h.
	(fold_convert): Moved to fold-const.h.
	(fold_convert_loc): Moved to fold-const.h.
	(fold_convertible_p): Moved to fold-const.h.
	(fold_defer_overflow_warnings): Moved to fold-const.h.
	(fold_deferring_overflow_warnings_p): Moved to fold-const.h.
	(fold_fma): Moved to fold-const.h.
	(fold_ignored_result): Moved to fold-const.h.
	(fold_indirect_ref): Moved to fold-const.h.
	(fold_indirect_ref_1): Moved to fold-const.h.
	(fold_indirect_ref_loc): Moved to fold-const.h.
	(fold_read_from_constant_string): Moved to fold-const.h.
	(fold_real_zero_addition_p): Moved to fold-const.h.
	(fold_single_bit_test): Moved to fold-const.h.
	(fold_strip_sign_ops): Moved to fold-const.h.
	(fold_ternary): Moved to fold-const.h.
	(fold_ternary_loc): Moved to fold-const.h.
	(fold_unary): Moved to tree-data-ref.h.
	(fold_unary_ignore_overflow): Moved to fold-const.h.
	(fold_unary_ignore_overflow_loc): Moved to fold-const.h.
	(fold_unary_loc): Moved to fold-const.h.
	(fold_unary_to_constant): Moved to fold-const.h.
	(fold_undefer_and_ignore_overflow_warnings): Moved to fold-const.h.
	(fold_undefer_overflow_warnings): Moved to fold-const.h.
	(folding_initializer): Moved to fold-const.h.
	(free_temp_slots): Moved to function.h.
	(generate_setjmp_warnings): Moved to function.h.
	(get_attribute_name): Moved to attribs.h.
	(get_identifier): Moved to stringpool.h.
	(get_identifier_with_length): Moved to stringpool.h.
	(get_inner_reference): Moved to tree.h.
	(gimple_alloca_call_p): Moved to calls.h.
	(gimplify_parameters): Moved to function.h.
	(highest_pow2_factor): Moved to expr.h.
	(indent_to): Moved to print-tree.h.
	(init_attributes): Moved to attribs.h.
	(init_dummy_function_start): Moved to function.h.
	(init_function_start): Moved to function.h.
	(init_inline_once): Moved to tree-inline.h.
	(init_object_sizes): Moved to tree-object-size.h.
	(init_temp_slots): Moved to function.h.
	(init_tree_optimization_optabs): Moved to optabs.h.
	(initialize_sizetypes): Moved to stor-layout.h.
	(initializer_constant_valid_for_bitfield_p): Moved to varasm.h.
	(initializer_constant_valid_p): Moved to varasm.h.
	(int_const_binop): Moved to fold-const.h.
	(internal_reference_types): Moved to stor-layout.h.
	(invert_tree_comparison): Moved to fold-const.h.
	(invert_truthvalue): Moved to fold-const.h.
	(invert_truthvalue_loc): Moved to fold-const.h.
	(is_tm_ending_fndecl): Moved to trans-mem.h.
	(is_tm_may_cancel_outer): Moved to trans-mem.h.
	(is_tm_pure): Moved to trans-mem.h.
	(is_tm_safe): Moved to trans-mem.h.
	(layout_decl): Moved to stor-layout.h.
	(layout_type): Moved to stor-layout.h.
	(lookup_attribute_spec): Moved to attribs.h.
	(make_accum_type): Moved to stor-layout.h.
	(make_decl_one_only): Moved to varasm.h.
	(make_decl_rtl): Moved to tree.h.
	(make_decl_rtl_for_debug): Moved to varasm.h.
	(make_fract_type): Moved to stor-layout.h.
	(make_or_reuse_sat_signed_accum_type): Moved to stor-layout.h.
	(make_or_reuse_sat_signed_fract_type): Moved to stor-layout.h.
	(make_or_reuse_sat_unsigned_accum_type): Moved to stor-layout.h.
	(make_or_reuse_sat_unsigned_fract_type): Moved to stor-layout.h.
	(make_or_reuse_signed_accum_type): Moved to stor-layout.h.
	(make_or_reuse_signed_fract_type): Moved to stor-layout.h.
	(make_or_reuse_unsigned_accum_type): Moved to stor-layout.h.
	(make_or_reuse_unsigned_fract_type): Moved to stor-layout.h.
	(make_range): Moved to fold-const.h.
	(make_range_step): Moved to fold-const.h.
	(make_sat_signed_accum_type): Moved to stor-layout.h.
	(make_sat_signed_fract_type): Moved to stor-layout.h.
	(make_sat_unsigned_accum_type): Moved to stor-layout.h.
	(make_sat_unsigned_fract_type): Moved to stor-layout.h.
	(make_signed_accum_type): Moved to stor-layout.h.
	(make_signed_fract_type): Moved to stor-layout.h.
	(make_signed_type): Moved to stor-layout.h.
	(make_unsigned_accum_type): Moved to stor-layout.h.
	(make_unsigned_fract_type): Moved to stor-layout.h.
	(make_unsigned_type): Moved to stor-layout.h.
	(mark_decl_referenced): Moved to varasm.h.
	(mark_referenced): Moved to varasm.h.
	(may_negate_without_overflow_p): Moved to fold-const.h.
	(maybe_get_identifier): Moved to stringpool.h.
	(merge_ranges): Moved to fold-const.h.
	(merge_weak): Moved to varasm.h.
	(mode_for_size_tree): Moved to stor-layout.h.
	(multiple_of_p): Moved to fold-const.h.
	(must_pass_in_stack_var_size): Moved to calls.h.
	(must_pass_in_stack_var_size_or_pad): Moved to calls.h.
	(native_encode_expr): Moved to fold-const.h.
	(native_interpret_expr): Moved to fold-const.h.
	(non_lvalue): Moved to fold-const.h.
	(non_lvalue_loc): Moved to fold-const.h.
	(normalize_offset): Moved to stor-layout.h.
	(normalize_rli): Moved to stor-layout.h.
	(notice_global_symbol): Moved to varasm.h.
	(omit_one_operand): Moved to fold-const.h.
	(omit_one_operand_loc): Moved to fold-const.h.
	(omit_two_operands): Moved to fold-const.h.
	(omit_two_operands_loc): Moved to fold-const.h.
	(operand_equal_p): Moved to tree-data-ref.h.
	(parse_input_constraint): Moved to stmt.h.
	(parse_output_constraint): Moved to stmt.h.
	(place_field): Moved to stor-layout.h.
	(pop_function_context): Moved to function.h.
	(pop_temp_slots): Moved to function.h.
	(pos_from_bit): Moved to stor-layout.h.
	(preserve_temp_slots): Moved to function.h.
	(print_node): Moved to print-tree.h.
	(print_node_brief): Moved to print-tree.h.
	(print_rtl): Moved to rtl.h.
	(process_pending_assemble_externals): Moved to varasm.h.
	(ptr_difference_const): Moved to fold-const.h.
	(push_function_context): Moved to function.h.
	(push_struct_function): Moved to function.h.
	(push_temp_slots): Moved to function.h.
	(record_tm_replacement): Moved to trans-mem.h.
	(relayout_decl): Moved to stor-layout.h.
	(resolve_asm_operand_names): Moved to stmt.h.
	(resolve_unique_section): Moved to varasm.h.
	(rli_size_so_far): Moved to stor-layout.h.
	(rli_size_unit_so_far): Moved to stor-layout.h.
	(round_down): Moved to fold-const.h.
	(round_down_loc): Moved to fold-const.h.
	(round_up): Moved to fold-const.h.
	(round_up_loc): Moved to fold-const.h.
	(set_decl_incoming_rtl): Moved to emit-rtl.h.
	(set_decl_rtl): Moved to tree.h.
	(set_min_and_max_values_for_integral_type): Moved to stor-layout.h.
	(set_user_assembler_name): Moved to varasm.h.
	(setjmp_call_p): Moved to calls.h.
	(size_binop): Moved to fold-const.h.
	(size_binop_loc): Moved to fold-const.h.
	(size_diffop): Moved to fold-const.h.
	(size_diffop_loc): Moved to fold-const.h.
	(size_int_kind): Moved to fold-const.h.
	(stack_protect_epilogue): Moved to function.h.
	(start_record_layout): Moved to stor-layout.h.
	(supports_one_only): Moved to varasm.h.
	(swap_tree_comparison): Moved to fold-const.h.
	(tm_malloc_replacement): Moved to trans-mem.h.
	(tree build_fold_addr_expr_loc): Moved to fold-const.h.
	(tree build_invariant_address): Moved to fold-const.h.
	(tree_binary_nonnegative_warnv_p): Moved to fold-const.h.
	(tree_binary_nonzero_warnv_p): Moved to fold-const.h.
	(tree_call_nonnegative_warnv_p): Moved to fold-const.h.
	(tree_expr_nonnegative_p): Moved to fold-const.h.
	(tree_expr_nonnegative_warnv_p): Moved to fold-const.h.
	(tree_output_constant_def): Moved to varasm.h.
	(tree_overlaps_hard_reg_set): Moved to stmt.h.
	(tree_single_nonnegative_warnv_p): Moved to fold-const.h.
	(tree_single_nonzero_warnv_p): Moved to fold-const.h.
	(tree_swap_operands_p): Moved to fold-const.h.
	(tree_unary_nonnegative_warnv_p): Moved to fold-const.h.
	(tree_unary_nonzero_warnv_p): Moved to fold-const.h.
	(update_alignment_for_field): Moved to stor-layout.h.
	(use_register_for_decl): Moved to function.h.
	(variable_size): Moved to rtl.h.
	(vector_type_mode): Moved to stor-layout.h.
	* cgraph.h: Corresponding changes.
	* emit-rtl.h: Corresponding changes.
	* expr.h: Corresponding changes.
	* function.h: Corresponding changes.
	* optabs.h: Corresponding changes.
	* trans-mem.h: Corresponding changes.
	Protect against multiple inclusion.
	* tree-inline.h: Corresponding changes.
	* tree-iterator.h: Corresponding changes.
	* tree-dfa.h: Include expr.h.
	* tree-ssanames.h: Include stringpool.h.
	* attribs.h: New file.
	* calls.h: New file.
	* fold-const.h: New file.
	* gcc-symtab.h: New file.
	* print-rtl.h: New file.
	* print-tree.h: New file.
	* stmt.h: New file.
	* stor-layout.h: New file.
	* strinpool.h: New file.
	* tree-nested.h: New file
	* tree-object-size.h: New file.
	* varasm.h: New file.
	* Makefile.in (PLUGIN_HEADERS): Add stringpool.h.

	* alias.c: Include varasm.h.
	Include expr.h.
	* asan.c: Include calls.h.
	Include stor-layout.h.
	Include varasm.h.
	* attribs.c: Include stringpool.h.
	Include attribs.h.
	Include stor-layout.h.
	* builtins.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	Include tree-object-size.h.
	* calls.c: Include stor-layout.h.
	Include varasm.h.
	Include stringpool.h.
	Include attribs.h.
	* cfgexpand.c: Include stringpool.h.
	Include varasm.h.
	Include stor-layout.h.
	Include stmt.h.
	Include print-tree.h.
	* cgraph.c: Include varasm.h.
	Include calls.h.
	Include print-tree.h.
	* cgraphclones.c: Include stringpool.h.
	Include function.h.
	Include emit-rtl.h.
	Move inclusion of rtl.h earlier in the file.
	* cgraphunit.c: Include varasm.h.
	Include stor-layout.h.
	Include stringpool.h.
	* cilk-common.c: Include stringpool.h.
	Include stor-layout.h.
	* combine.c: Include stor-layout.h.
	* config/aarch64/aarch64-builtins.c: Include stor-layout.h.
	Include stringpool.h.
	Include calls.h.
	* config/aarch64/aarch64.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/alpha/alpha.c: Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/arc/arc.c: Include varasm.h.
	Include stor-layout.h.
	Include stringpool.h.
	Include calls.h.
	* config/arm/arm.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/avr/avr-c.c: Include stor-layout.h.
	* config/avr/avr-log.c: Include print-tree.h.
	* config/avr/avr.c: Include print-tree.h.
	Include calls.h.
	Include stor-layout.h.
	Include stringpool.h.
	* config/bfin/bfin.c: Include varasm.h.
	Include calls.h.
	* config/c6x/c6x.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	Include stringpool.h.
	* config/cr16/cr16.c: Include stor-layout.h.
	Include calls.h.
	* config/cris/cris.c: Include varasm.h.
	Include stor-layout.h.
	Include calls.h.
	Include stmt.h.
	* config/darwin.c: Include stringpool.h.
	Include varasm.h.
	Include stor-layout.h.
	* config/epiphany/epiphany.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	Include stringpool.h.
	* config/fr30/fr30.c: Include stor-layout.h.
	Include varasm.h.
	* config/frv/frv.c: Include varasm.h.
	Include stor-layout.h.
	Include stringpool.h.
	* config/h8300/h8300.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	Include stringpool.h.
	* config/i386/i386.c: Include stringpool.h.
	Include attribs.h.
	Include calls.h.
	Include stor-layout.h.
	Include varasm.h.
	* config/i386/winnt-cxx.c: Include stringpool.h.
	Include attribs.h.
	* config/i386/winnt.c: Include stringpool.h.
	Include varasm.h.
	* config/ia64/ia64-c.c: Include stringpool.h.
	* config/ia64/ia64.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/iq2000/iq2000.c: Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/lm32/lm32.c: Include calls.h.
	* config/m32c/m32c.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/m32r/m32r.c: Include stor-layout.h.
	Include varasm.h.
	Include stringpool.h.
	Include calls.h.
	* config/m68k/m68k.c: Include calls.h.
	Include stor-layout.h.
	Include varasm.h.
	* config/mcore/mcore.c: Include stor-layout.h.
	Include varasm.h.
	Include stringpool.h.
	Include calls.h.
	* config/mep/mep.c: Include varasm.h.
	Include calls.h.
	Include stringpool.h.
	Include stor-layout.h.
	* config/microblaze/microblaze.c: Include varasm.h.
	Include stor-layout.h.
	Include calls.h.
	* config/mips/mips.c: Include varasm.h.
	Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	* config/mmix/mmix.c: Include varasm.h.
	Include stor-layout.h.
	Include calls.h.
	* config/mn10300/mn10300.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/moxie/moxie.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/msp430/msp430.c: Include stor-layout.h.
	Include calls.h.
	* config/nds32/nds32.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/pa/pa.c: Include stor-layout.h.
	Include stringpool.h.
	Include varasm.h.
	Include calls.h.
	* config/pdp11/pdp11.c: Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/picochip/picochip.c: Include calls.h.
	Include stor-layout.h.
	Include stringpool.h.
	Include varasm.h.
	* config/rl78/rl78.c: Include varasm.h.
	Include stor-layout.h.
	Include calls.h.
	* config/rs6000/rs6000-c.c: Include stor-layout.h.
	Include stringpool.h.
	* config/rs6000/rs6000.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include print-tree.h.
	Include varasm.h.
	* config/rx/rx.c: Include varasm.h.
	Include stor-layout.h.
	Include calls.h.
	* config/s390/s390.c: Include print-tree.h.
	Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/score/score.c: Include stringpool.h.
	Include calls.h.
	Include varasm.h.
	Include stor-layout.h.
	* config/sh/sh-c.c: Include stringpool.h.
	Include attribs.h.h.
	* config/sh/sh.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/sol2-c.c: Include stringpool.h.
	Include attribs.h.
	* config/sol2-cxx.c: Include stringpool.h.
	* config/sol2.c: Include stringpool.h.
	Include varasm.h.
	* config/sparc/sparc.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/spu/spu-c.c: Include stringpool.h.
	* config/spu/spu.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* config/stormy16/stormy16.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/tilegx/tilegx.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/tilepro/tilepro.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/v850/v850-c.c: Include stringpool.h.
	Include attribs.h.
	* config/v850/v850.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include calls.h.
	* config/vax/vax.c: Include calls.h.
	Include varasm.h.
	* config/vms/vms.c: Include stringpool.h.
	* config/vxworks.c: Include stringpool.h.
	* config/xtensa/xtensa.c: Include stringpool.h.
	Include stor-layout.h.
	Include calls.h.
	Include varasm.h.
	* convert.c: Include stor-layout.h.
	* coverage.c: Include stringpool.h.
	Include stor-layout.h.
	* dbxout.c: Include varasm.h.
	Include stor-layout.h.
	* dojump.c: Include stor-layout.h.
	* dse.c: Include stor-layout.h.
	* dwarf2asm.c: Include stringpool.h.
	Include varasm.h.
	* dwarf2cfi.c: Include stor-layout.h.
	* dwarf2out.c: Include rtl.h.
	Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include function.h.
	Include emit-rtl.h.
	Move inclusion of rtl.h earlier in the file.
	* emit-rtl.c: Include varasm.h.
	* except.c: Include stringpool.h.
	Include stor-layout.h.
	* explow.c: Include stor-layout.h.
	* expmed.c: Include stor-layout.h.
	* expr.c: Include stringpool.h.
	Include stor-layout.h.
	Include attribs.h.
	Include varasm.h.
	* final.c: Include varasm.h.
	* fold-const.c: Include stor-layout.h.
	Include calls.h.
	Include tree-iterator.h.
	* function.c: Include stor-layout.h.
	Include varasm.h.
	Include stringpool.h.
	* genattrtab.c (write_header): Emit includes for varasm.h,
	stor-layout.h and calls.h.
	* genautomata.c (main): Likewise.
	* genemit.c: Likewise.
	* genopinit.c: Likewise.
	* genoutput.c (output_prologue): Likewise.
	* genpeep.c: Likewise.
	* genpreds.c (write_insn_preds_c): Likewise.
	* gengtype.c (open_base_files): Add stringpool.h.
	* gimple-expr.c: Include stringpool.h.
	Include stor-layout.h.
	* gimple-fold.c: Include stringpool.h.
	Include expr.h.
	Include stmt.h.
	Include stor-layout.h.
	* gimple-low.c: Include tree-nested.h.
	Include calls.h.
	* gimple-pretty-print.c: Include stringpool.h.
	* gimple-ssa-strength-reduction.c: Include stor-layout.h.
	Include expr.h.
	* gimple-walk.c: Include stmt.h.
	* gimple.c: Include calls.h.
	Include stmt.h.
	Include stor-layout.h.
	* gimplify.c: Include stringpool.h.
	Include calls.h.
	Include varasm.h.
	Include stor-layout.h.
	Include stmt.h.
	Include print-tree.h.
	Include expr.h.
	* gimplify-me.c: Include stmt.h
	Include stor-layout.h
	* internal-fn.c: Include stor-layout.h.
	* ipa-devirt.c: Include print-tree.h.
	Include calls.h.
	* ipa-inline-analysis.c: Include stor-layout.h.
	Include stringpool.h.
	Include print-tree.h.
	* ipa-inline.c: Include trans-mem.h.
	Include calls.h.
	* ipa-prop.c: Include expr.h.
	Include stor-layout.h.
	Include print-tree.h.
	* ipa-pure-const.c: Include print-tree.h.
	Include calls.h.
	* ipa-reference.c: Include calls.h.
	* ipa-split.c: Include stringpool.h.
	Include expr.h.
	Include calls.h.
	* ipa.c: Include calls.h.
	Include stringpool.h.
	* langhooks.c: Include stringpool.h.
	Include attribs.h.
	* lto-cgraph.c: Include stringpool.h.
	* lto-streamer-in.c: Include stringpool.h.
	* lto-streamer-out.c: Include stor-layout.h.
	Include stringpool.h.
	* omp-low.c: Include stringpool.h.
	Include stor-layout.h.
	Include expr.h.
	* optabs.c: Include stor-layout.h.
	Include stringpool.h.
	Include varasm.h.
	* passes.c: Include varasm.h.
	* predict.c: Include calls.h.
	* print-rtl.c: Include print-tree.h.
	* print-tree.c: Include varasm.h.
	Include print-rtl.h.
	Include stor-layout.h.
	* realmpfr.c: Include stor-layout.h.
	* reg-stack.c: Include varasm.h.
	* sdbout.c: Include varasm.h.
	Include stor-layout.h.
	* simplify-rtx.c: Include varasm.h.
	* stmt.c: Include varasm.h.
	Include stor-layout.h.
	* stor-layout.c: Include stor-layout.h.
	Include stringpool.h.
	Include varasm.h.
	Include print-tree.h.
	* symtab.c: Include rtl.h.
	Include print-tree.h.
	Include varasm.h.
	Include function.h.
	Include emit-rtl.h.
	* targhooks.c: Include stor-layout.h.
	Include varasm.h.
	* toplev.c: Include varasm.h.
	Include tree-inline.h.
	* trans-mem.c: Include calls.h.
	Include function.h.
	Include rtl.h.
	Include emit-rtl.h.
	* tree-affine.c: Include expr.h.
	* tree-browser.c: Include print-tree.h.
	* tree-call-cdce.c: Include stor-layout.h.
	* tree-cfg.c: Include trans-mem.h.
	Include stor-layout.h.
	Include print-tree.h.
	* tree-complex.c: Include stor-layout.h.
	* tree-data-ref.c: Include expr.h.
	* tree-dfa.c: Include stor-layout.h.
	* tree-eh.c: Include expr.h.
	Include calls.h.
	* tree-emutls.c: Include stor-layout.h.
	Include varasm.h.
	* tree-if-conv.c: Include stor-layout.h.
	* tree-inline.c: Include stor-layout.h.
	Include calls.h.
	* tree-loop-distribution.c: Include stor-layout.h.
	* tree-nested.c: Include stringpool.h.
	Include stor-layout.h.
	* tree-object-size.c: Include tree-object-size.h.
	* tree-outof-ssa.c: Include stor-layout.h.
	* tree-parloops.c: Include stor-layout.h.
	Include tree-nested.h.
	* tree-pretty-print.c: Include stor-layout.h.
	Include expr.h.
	* tree-profile.c: Include varasm.h.
	Include tree-nested.h.
	* tree-scalar-evolution.c: Include expr.h.
	* tree-sra.c: Include stor-layout.h.
	* tree-ssa-address.c: Include stor-layout.h.
	* tree-ssa-ccp.c: Include stor-layout.h.
	* tree-ssa-dce.c: Include calls.h.
	* tree-ssa-dom.c: Include stor-layout.h.
	* tree-ssa-forwprop.c: Include stor-layout.h.
	* tree-ssa-ifcombine.c: Include stor-layout.h.
	* tree-ssa-loop-ivopts.c: Include stor-layout.h.
	* tree-ssa-loop-niter.c: Include calls.h.
	Include expr.h.
	* tree-ssa-loop-prefetch.c: Include stor-layout.h.
	* tree-ssa-math-opts.c: Include stor-layout.h.
	* tree-ssa-operands.c: Include stmt.h.
	Include print-tree.h.
	* tree-ssa-phiopt.c: Include stor-layout.h.
	* tree-ssa-reassoc.c: Include stor-layout.h.
	* tree-ssa-sccvn.c: Include stor-layout.h.
	* tree-ssa-sink.c: Include stor-layout.h.
	* tree-ssa-strlen.c: Include stor-layout.h.
	* tree-ssa-structalias.c: Include stor-layout.h.
	Include stmt.h.
	* tree-ssa-tail-merge.c: Include stor-layout.h.
	Include trans-mem.h.
	* tree-ssa-uncprop.c: Include stor-layout.h.
	* tree-ssa.c: Include stor-layout.h.
	* tree-ssanames.c: Include stor-layout.h.
	* tree-streamer-in.c: Include stringpool.h.
	* tree-streamer-out.c: Include stor-layout.h.
	* tree-switch-conversion.c: Include varasm.h.
	Include stor-layout.h.
	* tree-tailcall.c: Include stor-layout.h.
	* tree-vect-data-refs.c: Include stor-layout.h.
	* tree-vect-generic.c: Include stor-layout.h.
	* tree-vect-loop.c: Include stor-layout.h.
	* tree-vect-patterns.c: Include stor-layout.h.
	* tree-vect-slp.c: Include stor-layout.h.
	* tree-vect-stmts.c: Include stor-layout.h.
	* tree-vectorizer.c: Include stor-layout.h.
	* tree-vrp.c: Include stor-layout.h.
	Include calls.h.
	* tree.c: Include stor-layout.h.
	Include calls.h.
	Include attribs.h.
	Include varasm.h.
	* tsan.c: Include expr.h.
	* ubsan.c: Include stor-layout.h.
	Include stringpool.h.
	* value-prof.c: Include tree-nested.h.
	Include calls.h.
	* var-tracking.c: Include varasm.h.
	Include stor-layout.h.
	* varasm.c: Include stor-layout.h.
	Include stringpool.h.
	Include gcc-symtab.h.
	Include varasm.h.
	* varpool.c: Include varasm.h.
	* vmsdbgout.c: Include varasm.h.
	* xcoffout.c: Include varasm.h.

ada/ChangeLog

	* gcc-interface/decl.c: Include stringpool.h
	Include stor-layout.h
	* gcc-interface/misc.c: Include stor-layout.h
	Include print-tree.h
	* gcc-interface/trans.c: Include stringpool.h
	Include stor-layout.h
	Include stmt.h
	Include varasm.h
	* gcc-interface/utils.c: Include stringpool.h
	Include stor-layout.h
	Include attribs.h
	Include varasm.h
	* gcc-interface/utils2.c: Include stringpool.h
	Include stor-layout.h
	Include attribs.h
	Include varasm.h

c-family/ChangeLog

	* c-common.c: Include fold-const.h.
	Include stor-layout.h.
	Include calls.h.
	Include stringpool.h.
	Include attribs.h.
	Include varasm.h.
	Include trans-mem.h.
	* c-cppbuiltin.c: Include stor-layout.h.
	Include stringpool.h.
	* c-format.c: Include stringpool.h.
	* c-lex.c: Include stringpool.h.
	Include stor-layout.h.
	* c-pragma.c: Include stringpool.h.
	Include attribs.h.
	Include varasm.h.
	Include gcc-symtab.h.
	* c-pretty-print.c: Include stor-layout.h.
	Include attribs.h.
	* cilk.c: Include stringpool.h.
	Include calls.h.

c/ChangeLog

	* c-decl.c: Include print-tree.h.
	Include stor-layout.h.
	Include varasm.h.
	Include attribs.h.
	Include stringpool.h.
	* c-lang.c: Include fold-const.h.
	* c-parser.c: Include stringpool.h.
	Include attribs.h.
	Include stor-layout.h.
	Include varasm.h.
	Include trans-mem.h.
	* c-typeck.c: Include stor-layout.h.
	Include trans-mem.h.
	Include varasm.h.
	Include stmt.h.

cp/ChangeLog

	* call.c: Include stor-layout.h.
	Include trans-mem.h.
	Include stringpool.h.
	* class.c: Include stringpool.h.
	Include stor-layout.h.
	Include attribs.h.
	* cp-gimplify.c: Include stor-layout.h.
	* cvt.c: Include stor-layout.h.
	* decl.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include attribs.h.
	Include calls.h.
	* decl2.c: Include stringpool.h.
	Include varasm.h.
	Include attribs.h.
	Include stor-layout.h.
	Include calls.h.
	* error.c: Include stringpool.h.
	* except.c: Include stringpool.h.
	Include trans-mem.h.
	Include attribs.h.
	* init.c: Include stringpool.h.
	Include varasm.h.
	* lambda.c: Include stringpool.h.
	* lex.c: Include stringpool.h.
	* mangle.c: Include stor-layout.h.
	Include stringpool.h.
	* method.c: Include stringpool.h.
	Include varasm.h.
	* name-lookup.c: Include stringpool.h.
	Include print-tree.h.
	Include attribs.h.
	* optimize.c: Include stringpool.h.
	* parser.c: Include print-tree.h.
	Include stringpool.h.
	Include attribs.h.
	Include trans-mem.h.
	* pt.c: Include stringpool.h.
	Include varasm.h.
	Include attribs.h.
	Include stor-layout.h.
	* ptree.c: Include print-tree.h.
	* repo.c: Include stringpool.h.
	* rtti.c: Include stringpool.h.
	Include stor-layout.h.
	* semantics.c: Include stmt.h.
	Include varasm.h.
	Include stor-layout.h.
	Include stringpool.h.
	* tree.c: Include stor-layout.h.
	Include print-tree.h.
	Include tree-iterator.h.
	* typeck.c: Include stor-layout.h.
	Include varasm.h.
	* typeck2.c: Include stor-layout.h.
	Include varasm.h.
	* vtable-class-hierarchy.c: Include stringpool.h.
	Include stor-layout.h.

fortran/ChangeLog

	* decl.c: Include stringpool.h.
	* iresolve.c: Include stringpool.h.
	* match.c: Include stringpool.h.
	* module.c: Include stringpool.h.
	* target-memory.c: Include stor-layout.h.
	* trans-common.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	* trans-const.c: Include stor-layout.h.
	* trans-decl.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	Include attribs.h.
	* trans-expr.c: Include stringpool.h.
	* trans-intrinsic.c: Include stringpool.h.
	Include tree-nested.h.
	Include stor-layout.h.
	* trans-io.c: Include stringpool.h.
	Include stor-layout.h.
	* trans-openmp.c: Include stringpool.h.
	* trans-stmt.c: Include stringpool.h.
	* trans-types.c: Include stor-layout.h.
	Include stringpool.h.
	* trans.c: Include stringpool.h.

go/ChangeLog

	* go-backend.c: Include stor-layout.h.
	* go-gcc.cc: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	* go-lang.c: Include stor-layout.h.

java/ChangeLog

	* builtins.c: Include stor-layout.h.
	Include stringpool.h.
	* class.c: Include stringpool.h.
	Include stor-layout.h.
	Include varasm.h.
	* constants.c: Include stringpool.h.
	Include stor-layout.h.
	* decl.c: Include stor-layout.h.
	Include stringpool.h.
	Include varasm.h.
	* except.c: Include stringpool.h.
	Include stor-layout.h.
	* expr.c: Include stringpool.h.
	Include stor-layout.h.
	* jcf-parse.c: Include stringpool.h.
	* mangle.c: Include stringpool.h.
	* resource.c: Include stringpool.h.
	Include stor-layout.h.
	* typeck.c: Include stor-layout.h.
	Include stringpool.h.
	* verify-glue.c: Include stringpool.h.

lto/ChangeLog
	* lto-lang.c: Include stringpool.h.
	Include stor-layout.h.
	* lto-partition.c: Include gcc-symtab.h.
	* lto.c: Include stor-layout.h.

objc/ChangeLog
	* objc-act.c: Include stringpool.h.
	Include stor-layout.h.
	Include attribs.h.
	* objc-encoding.c: Include stringpool.h.
	Include stor-layout.h.
	* objc-gnu-runtime-abi-01.c: Include stringpool.h.
	* objc-next-runtime-abi-01.c:
	Include stringpool.h.
	* objc-next-runtime-abi-02.c: Include stringpool.h.
	* objc-runtime-shared-support.c: Include stringpool.h.

testsuite/ChangeLog

	* gcc.dg/plugin/selfassign.c: Include stringpool.h.
	* gcc.dg/plugin/start_unit_plugin.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205023 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 172 insertions, 0 deletions

diff --git a/gcc/fold-const.h b/gcc/fold-const.h
new file mode 100644
index 00000000000..1d458366951
--- /dev/null
+++ b/gcc/fold-const.h
@@ -0,0 +1,172 @@
+/* Fold a constant sub-tree into a single node for C-compiler
+   Copyright (C) 1987-2013 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_FOLD_CONST_H
+#define GCC_FOLD_CONST_H
+
+/* Non-zero if we are folding constants inside an initializer; zero
+   otherwise.  */
+extern int folding_initializer;
+
+/* Convert between trees and native memory representation.  */
+extern int native_encode_expr (const_tree, unsigned char *, int);
+extern tree native_interpret_expr (tree, const unsigned char *, int);
+
+/* Fold constants as much as possible in an expression.
+   Returns the simplified expression.
+   Acts only on the top level of the expression;
+   if the argument itself cannot be simplified, its
+   subexpressions are not changed.  */
+
+extern tree fold (tree);
+#define fold_unary(CODE,T1,T2)\
+   fold_unary_loc (UNKNOWN_LOCATION, CODE, T1, T2)
+extern tree fold_unary_loc (location_t, enum tree_code, tree, tree);
+#define fold_unary_ignore_overflow(CODE,T1,T2)\
+   fold_unary_ignore_overflow_loc (UNKNOWN_LOCATION, CODE, T1, T2)
+extern tree fold_unary_ignore_overflow_loc (location_t, enum tree_code, tree, tree);
+#define fold_binary(CODE,T1,T2,T3)\
+   fold_binary_loc (UNKNOWN_LOCATION, CODE, T1, T2, T3)
+extern tree fold_binary_loc (location_t, enum tree_code, tree, tree, tree);
+#define fold_ternary(CODE,T1,T2,T3,T4)\
+   fold_ternary_loc (UNKNOWN_LOCATION, CODE, T1, T2, T3, T4)
+extern tree fold_ternary_loc (location_t, enum tree_code, tree, tree, tree, tree);
+#define fold_build1(c,t1,t2)\
+   fold_build1_stat_loc (UNKNOWN_LOCATION, c, t1, t2 MEM_STAT_INFO)
+#define fold_build1_loc(l,c,t1,t2)\
+   fold_build1_stat_loc (l, c, t1, t2 MEM_STAT_INFO)
+extern tree fold_build1_stat_loc (location_t, enum tree_code, tree,
+				  tree MEM_STAT_DECL);
+#define fold_build2(c,t1,t2,t3)\
+   fold_build2_stat_loc (UNKNOWN_LOCATION, c, t1, t2, t3 MEM_STAT_INFO)
+#define fold_build2_loc(l,c,t1,t2,t3)\
+   fold_build2_stat_loc (l, c, t1, t2, t3 MEM_STAT_INFO)
+extern tree fold_build2_stat_loc (location_t, enum tree_code, tree, tree,
+				  tree MEM_STAT_DECL);
+#define fold_build3(c,t1,t2,t3,t4)\
+   fold_build3_stat_loc (UNKNOWN_LOCATION, c, t1, t2, t3, t4 MEM_STAT_INFO)
+#define fold_build3_loc(l,c,t1,t2,t3,t4)\
+   fold_build3_stat_loc (l, c, t1, t2, t3, t4 MEM_STAT_INFO)
+extern tree fold_build3_stat_loc (location_t, enum tree_code, tree, tree, tree,
+				  tree MEM_STAT_DECL);
+extern tree fold_build1_initializer_loc (location_t, enum tree_code, tree, tree);
+extern tree fold_build2_initializer_loc (location_t, enum tree_code, tree, tree, tree);
+#define fold_build_call_array(T1,T2,N,T4)\
+   fold_build_call_array_loc (UNKNOWN_LOCATION, T1, T2, N, T4)
+extern tree fold_build_call_array_loc (location_t, tree, tree, int, tree *);
+#define fold_build_call_array_initializer(T1,T2,N,T4)\
+   fold_build_call_array_initializer_loc (UNKNOWN_LOCATION, T1, T2, N, T4)
+extern tree fold_build_call_array_initializer_loc (location_t, tree, tree, int, tree *);
+extern bool fold_convertible_p (const_tree, const_tree);
+#define fold_convert(T1,T2)\
+   fold_convert_loc (UNKNOWN_LOCATION, T1, T2)
+extern tree fold_convert_loc (location_t, tree, tree);
+extern tree fold_single_bit_test (location_t, enum tree_code, tree, tree, tree);
+extern tree fold_ignored_result (tree);
+extern tree fold_abs_const (tree, tree);
+extern tree fold_indirect_ref_1 (location_t, tree, tree);
+extern void fold_defer_overflow_warnings (void);
+extern void fold_undefer_overflow_warnings (bool, const_gimple, int);
+extern void fold_undefer_and_ignore_overflow_warnings (void);
+extern bool fold_deferring_overflow_warnings_p (void);
+extern tree fold_fma (location_t, tree, tree, tree, tree);
+extern int operand_equal_p (const_tree, const_tree, unsigned int);
+extern int multiple_of_p (tree, const_tree, const_tree);
+#define omit_one_operand(T1,T2,T3)\
+   omit_one_operand_loc (UNKNOWN_LOCATION, T1, T2, T3)
+extern tree omit_one_operand_loc (location_t, tree, tree, tree);
+#define omit_two_operands(T1,T2,T3,T4)\
+   omit_two_operands_loc (UNKNOWN_LOCATION, T1, T2, T3, T4)
+extern tree omit_two_operands_loc (location_t, tree, tree, tree, tree);
+#define invert_truthvalue(T)\
+   invert_truthvalue_loc (UNKNOWN_LOCATION, T)
+extern tree invert_truthvalue_loc (location_t, tree);
+extern tree fold_unary_to_constant (enum tree_code, tree, tree);
+extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree);
+extern tree fold_read_from_constant_string (tree);
+extern tree int_const_binop (enum tree_code, const_tree, const_tree);
+#define build_fold_addr_expr(T)\
+        build_fold_addr_expr_loc (UNKNOWN_LOCATION, (T))
+extern tree build_fold_addr_expr_loc (location_t, tree);
+#define build_fold_addr_expr_with_type(T,TYPE)\
+        build_fold_addr_expr_with_type_loc (UNKNOWN_LOCATION, (T), TYPE)
+extern tree build_fold_addr_expr_with_type_loc (location_t, tree, tree);
+extern tree fold_build_cleanup_point_expr (tree type, tree expr);
+extern tree fold_strip_sign_ops (tree);
+#define build_fold_indirect_ref(T)\
+        build_fold_indirect_ref_loc (UNKNOWN_LOCATION, T)
+extern tree build_fold_indirect_ref_loc (location_t, tree);
+#define fold_indirect_ref(T)\
+        fold_indirect_ref_loc (UNKNOWN_LOCATION, T)
+extern tree fold_indirect_ref_loc (location_t, tree);
+extern tree build_simple_mem_ref_loc (location_t, tree);
+#define build_simple_mem_ref(T)\
+	build_simple_mem_ref_loc (UNKNOWN_LOCATION, T)
+extern double_int mem_ref_offset (const_tree);
+extern tree build_invariant_address (tree, tree, HOST_WIDE_INT);
+extern tree constant_boolean_node (bool, tree);
+extern tree div_if_zero_remainder (enum tree_code, const_tree, const_tree);
+
+extern bool tree_swap_operands_p (const_tree, const_tree, bool);
+extern enum tree_code swap_tree_comparison (enum tree_code);
+
+extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
+extern enum tree_code invert_tree_comparison (enum tree_code, bool);
+
+extern bool tree_unary_nonzero_warnv_p (enum tree_code, tree, tree, bool *);
+extern bool tree_binary_nonzero_warnv_p (enum tree_code, tree, tree, tree op1,
+                                         bool *);
+extern bool tree_single_nonzero_warnv_p (tree, bool *);
+extern bool tree_unary_nonnegative_warnv_p (enum tree_code, tree, tree, bool *);
+extern bool tree_binary_nonnegative_warnv_p (enum tree_code, tree, tree, tree,
+                                             bool *);
+extern bool tree_single_nonnegative_warnv_p (tree t, bool *strict_overflow_p);
+extern bool tree_call_nonnegative_warnv_p (tree, tree, tree, tree, bool *);
+
+extern bool fold_real_zero_addition_p (const_tree, const_tree, int);
+extern tree combine_comparisons (location_t, enum tree_code, enum tree_code,
+				 enum tree_code, tree, tree, tree);
+extern void debug_fold_checksum (const_tree);
+extern bool may_negate_without_overflow_p (const_tree);
+#define round_up(T,N) round_up_loc (UNKNOWN_LOCATION, T, N)
+extern tree round_up_loc (location_t, tree, int);
+#define round_down(T,N) round_down_loc (UNKNOWN_LOCATION, T, N)
+extern tree round_down_loc (location_t, tree, int);
+extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
+#define size_binop(CODE,T1,T2)\
+   size_binop_loc (UNKNOWN_LOCATION, CODE, T1, T2)
+extern tree size_binop_loc (location_t, enum tree_code, tree, tree);
+#define size_diffop(T1,T2)\
+   size_diffop_loc (UNKNOWN_LOCATION, T1, T2)
+extern tree size_diffop_loc (location_t, tree, tree);
+
+/* Return an expr equal to X but certainly not valid as an lvalue.  */
+#define non_lvalue(T) non_lvalue_loc (UNKNOWN_LOCATION, T)
+extern tree non_lvalue_loc (location_t, tree);
+
+extern bool tree_expr_nonnegative_p (tree);
+extern bool tree_expr_nonnegative_warnv_p (tree, bool *);
+extern tree make_range (tree, int *, tree *, tree *, bool *);
+extern tree make_range_step (location_t, enum tree_code, tree, tree, tree,
+			     tree *, tree *, int *, bool *);
+extern tree build_range_check (location_t, tree, tree, int, tree, tree);
+extern bool merge_ranges (int *, tree *, tree *, int, tree, tree, int,
+			  tree, tree);
+
+#endif // GCC_FOLD_CONST_H