When computing the number of iterations until wrap types are mixed up,
eventually leading to checking ICEs with a pointer bitwise inversion.
The following uses niter_type for the calculation.

	PR tree-optimization/108793
	* tree-ssa-loop-niter.cc (number_of_iterations_until_wrap):
	Use convert operands to niter_type when computing num.

	* gcc.dg/torture/pr108793.c: New testcase.

... which accidentally had gotten reverted in recent
commit r13-6156-g1e8eb102200902e12c1b00e867e338be0a92c292
"gccrs: dump: Emit visibility when dumping items".

gcc/rust/ChangeLog:

	* backend/rust-builtins.cc (BuiltinsContext::setup_math_fns): New functions.

gcc/testsuite/ChangeLog:

	* rust/compile/torture/intrinsics-math.rs: New test.

We only used one path of the C++ folder's get_nth_callarg function:
CALL_EXPR_ARG. Replace all calls to get_nth_callarg by macro calls to
CALL_EXPR_ARG

gcc/rust/ChangeLog:

	* backend/rust-constexpr.cc (get_nth_callarg): Remove function.
	(rs_bind_parameters_in_call): Use CALL_EXPR_ARG instead.
	(potential_constant_expression_1): Likewise.

... lost in #1527 commit 138a6260124740208b8f3aff2e38617f43b05fe8
"rust: Add -frust-compile-until option".

gcc/rust/ChangeLog:

	* lang.opt: Fix ordering of file.

gcc/rust/ChangeLog:

	* backend/rust-compile-type.cc (TyTyResolveCompile::visit): Remove unused parameters.
	* backend/rust-constexpr.cc (constant_value_1): Likewise.
	(fold_non_dependent_init): Likewise.
	* backend/rust-tree.cc (publicly_uniquely_derived_p): Likewise.
	(instantiation_dependent_expression_p): Likewise.
	(type_has_nontrivial_copy_init): Likewise.
	(is_normal_capture_proxy): Likewise.
	(resolve_nondeduced_context): Likewise.
	(undeduced_auto_decl): Likewise.
	(require_deduced_type): Likewise.
	* checks/errors/privacy/rust-privacy-reporter.cc (PrivacyReporter::visit): Likewise.
	* checks/errors/privacy/rust-reachability.cc (ReachabilityVisitor::visit): Likewise.
	* checks/errors/privacy/rust-visibility-resolver.cc (VisibilityResolver::visit): Likewise.
	* checks/errors/rust-const-checker.cc (ConstChecker::visit): Likewise.
	* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit): Likewise.
	* checks/lints/rust-lint-marklive.cc (MarkLive::go): Likewise.
	* checks/lints/rust-lint-unused-var.cc (unused_var_walk_fn): Likewise.
	* expand/rust-macro-builtins.cc (try_expand_single_string_literal): Likewise.
	(try_expand_many_expr): Likewise.
	(parse_single_string_literal): Likewise.
	(MacroBuiltin::assert_handler): Likewise.
	(MacroBuiltin::file_handler): Likewise.
	(MacroBuiltin::column_handler): Likewise.
	(MacroBuiltin::concat_handler): Likewise.
	(MacroBuiltin::env_handler): Likewise.
	(MacroBuiltin::line_handler): Likewise.
	* hir/rust-ast-lower-base.cc (ASTLoweringBase::visit): Likewise.
	(ASTLoweringBase::handle_doc_item_attribute): Likewise.
	* hir/rust-hir-dump.cc (Dump::visit): Likewise.
	* hir/tree/rust-hir-full-test.cc (ConstGenericParam::accept_vis): Likewise.
	* lex/rust-lex.cc (Lexer::parse_utf8_escape): Likewise.
	(Lexer::parse_string): Likewise.
	(Lexer::parse_char_or_lifetime): Likewise.
	* lex/rust-lex.h: Likewise.
	* metadata/rust-export-metadata.cc: Likewise.
	* resolve/rust-ast-resolve-expr.cc (ResolveExpr::visit): Likewise.
	* resolve/rust-ast-resolve-type.cc (ResolveType::visit): Likewise.
	(ResolveTypeToCanonicalPath::visit): Likewise.
	* resolve/rust-ast-verify-assignee.h: Likewise.
	* resolve/rust-early-name-resolver.cc (EarlyNameResolver::visit): Likewise.
	* typecheck/rust-hir-type-check-expr.h: Likewise.
	* typecheck/rust-hir-type-check-item.h: Likewise.
	* typecheck/rust-hir-type-check-pattern.cc (TypeCheckPattern::visit): Likewise.
	* typecheck/rust-tyty-rules.h: Likewise.
	* util/rust-attributes.cc (AttributeChecker::visit): Likewise.

gccrs: Skip this debug test case which is failing on the latest mac-os devtools and its only for debug info

gcc/testsuite/ChangeLog:

	* rust/debug/chartype.rs: Skip testcases on Darwin architectures.

This adds missing copy constructors to HIR::PathExprSegment which were
wrongly defaulting to empty vectors when apply specified generic arguments
to method calls.

gcc/rust/ChangeLog:

	* hir/tree/rust-hir-expr.h: Add const `get_method_name`.
	* hir/tree/rust-hir-full-decls.h (struct GenericArgs): Move from `struct`...
	(class GenericArgs): ...to `class`.
	* hir/tree/rust-hir-path.h (struct GenericArgs): Likewise.
	(class GenericArgs): Clear `type_args` in copy constructor.
	* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Reorder
	debug print.
	* typecheck/rust-tyty.h: Add default constructors for `SubstitutionArgumentMappings`.

When we have a closure expression that captures a parent function's
variable we must setup the closure data to contain this. Ignoring
moveability and mutability requires for now, this patch creates the closure
structure with fields for each of the captured variables. When it comes to
compilation of the closure expression in order to support nested closures
we must setup a context of implicit mappings so that for all path
resolution we hit this implicit closure mappings lookups code before any
lookup_var_decl as this decl will not exist so the order here is important
during path resolution which is a similar problem to match expression
destructuring.

Fixes #195

gcc/rust/ChangeLog:

	* backend/rust-compile-context.cc (Context::push_closure_context): New function.
	(Context::pop_closure_context): Likewise.
	(Context::insert_closure_binding): Likewise.
	(Context::lookup_closure_binding): Likewise.
	* backend/rust-compile-context.h: Declare new functions and closure mappings.
	* backend/rust-compile-expr.cc (CompileExpr::visit): Visit captures properly.
	(CompileExpr::generate_closure_function): Compile captures properly.
	* backend/rust-compile-resolve-path.cc (ResolvePathRef::resolve): Check for
	closure bindings.
	* backend/rust-compile-type.cc (TyTyResolveCompile::visit): Compile capture list's
	types as well.

gcc/testsuite/ChangeLog:

	* rust/execute/torture/closure3.rs: New test.

gcc/rust/ChangeLog:

	* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Pass captures
	properly to `TyTy::ClosureType` constructor.
	* typecheck/rust-tyty.cc (ClosureType::as_string): Fix string representation.
	(ClosureType::clone): Pass `captures` argument.
	* typecheck/rust-tyty.h: Add `captures` field.

When we have a closure block referencing variables in a parent function,
we must track what these are. We do this by having a context of closures
so if we have a variable reference and its declared in a rib whose node id
is less than the node id of the closure's node id we know it must be a
captured variable. We also need to iterate all possible closure contexts
as we might be in the case of a nested closure.

Addresses #195

gcc/rust/ChangeLog:

	* resolve/rust-ast-resolve-expr.cc (ResolveExpr::visit): Use proper closure
	contexts.
	* resolve/rust-name-resolver.cc (Scope::lookup_decl_type): New function.
	(Scope::lookup_rib_for_decl): Likewise.
	(Resolver::insert_resolved_name): Insert captured items.
	(Resolver::push_closure_context): New function.
	(Resolver::pop_closure_context): Likewise.
	(Resolver::insert_captured_item): Likewise.
	(Resolver::decl_needs_capture): Likewise.
	(Resolver::get_captures): Likewise.
	* resolve/rust-name-resolver.h: Declare new functions.

This allows us to track the type of declaration that is stored within a
Rib.

gcc/rust/ChangeLog:

	* resolve/rust-ast-resolve-expr.cc (ResolveExpr::visit): Add Rib argument.
	(ResolveExpr::resolve_closure_param): Likewise.
	* resolve/rust-ast-resolve-implitem.h: Likewise.
	* resolve/rust-ast-resolve-item.cc (ResolveTraitItems::visit): Likewise.
	(ResolveItem::visit): Likewise.
	* resolve/rust-ast-resolve-pattern.cc (PatternDeclaration::visit): Likewise.
	* resolve/rust-ast-resolve-pattern.h: Likewise.
	* resolve/rust-ast-resolve-stmt.h: Likewise.
	* resolve/rust-ast-resolve-toplevel.h: Likewise.
	* resolve/rust-ast-resolve-type.h: Likewise.
	* resolve/rust-name-resolver.cc (Rib::lookup_decl_type): Likewise.
	(Scope::insert): Likewise.
	(Resolver::insert_builtin_types): Likewise.
	* resolve/rust-name-resolver.h: Likewise.

This macro is a mess and a helper method is much better for this case.

gcc/rust/ChangeLog:

	* resolve/rust-name-resolver.cc (MKBUILTIN_TYPE): Remove macro.
	(Rib::Rib): Remove `mappings` field.
	(Resolver::generate_builtins): Use `setup_builtin` instead of macro.
	(Resolver::setup_builtin): New function.
	* resolve/rust-name-resolver.h: Declare `setup_builtin`, add FIXME
	comment.

gcc/rust/ChangeLog:

	* lex/rust-lex.cc (Lexer::Lexer): Add `dump_lex` boolean flag.
	(Lexer::skip_token): Dump tokens if flag is enabled.
	(Lexer::dump_and_skip): New function.
	* lex/rust-lex.h: Include optional.h and declare functions.
	* parse/rust-parse-impl.h (Parser::debug_dump_lex_output): Remove old
	unused function.
	* parse/rust-parse.h: Likewise.
	* rust-session-manager.cc (Session::compile_crate): Pass lexer dump
	option to lexer.
	(Session::dump_lex): New function.
	* util/rust-optional.h: Add missing constructor.

Signed-off-by: Raiki Tamura <tamaron1203@gmail.com>

gcc/rust/ChangeLog:

	* ast/rust-item.h: Remoe default location for Visibility class.
	* parse/rust-parse-impl.h (Parser::parse_visibility): Pass proper location
	when instantiating visibilities.

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Fix dumping of fn params.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Remove extraneous string when
	dumping statements.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc: Remove unused include.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.
	* ast/rust-ast-dump.h: Likewise.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

+ Return FunctionQualifiers as ref to work in ast dump

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.
	* ast/rust-ast-dump.h: Add missing getter declaration.
	* ast/rust-ast-full-test.cc (BareFunctionType::as_string): Fix bare function
	string representation.
	* ast/rust-type.h (class BareFunctionType): Declare said getter.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing tuple type visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing never type visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing RawPointer visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing array visitor

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing slice visitor.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

This is currently needed for lifetimes to use the existing infrastructure.

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add missing visitors.
	* ast/rust-ast-dump.h: Likewise.
	* ast/rust-ast.h: Add `get_lifetime_bounds` method.
	* ast/rust-item.h: Add missing getter for lifetimes.
	* ast/rust-type.h: Likewise.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

This is currently needed for lifetimes to use the existing infrastructure.

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add new reference visitor wrapper.
	* ast/rust-ast-dump.h: Declare it.
	* ast/rust-item.h: Add mutable visibility getters.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* typecheck/rust-tyty-call.cc (TypeCheckCallExpr::visit): Fix extra call
	to `delete`.

gcc/rust/ChangeLog:

	* ast/rust-item.h: Add location member.
	* hir/rust-ast-lower.cc (translate_visibility): Pass location argument.
	* hir/tree/rust-hir-item.h: Fix constructor to accept Location argument.

gcc/rust/ChangeLog:

	* util/rust-lang-item.h: Add handling for `phantom_data` lang item.

gcc/testsuite/ChangeLog:

	* rust/compile/torture/phantom_data.rs: New test.

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::visit): Add handling for unit structures.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.h: Fix documentation.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

gcc/rust/ChangeLog:

	* ast/rust-ast-dump.cc (Dump::go): Use new API.
	(Dump::format_function_param): Refactor.
	(Dump::visit_items_joined_by_separator): New function.
	(Dump::emit_attrib): Refactor.
	(Dump::visit_as_line): New function.
	(Dump::visit_items_as_lines): Likewise.
	(Dump::visit_items_as_block): Likewise.
	(Dump::visit): Use new API.
	(Dump::emit_visibility): Likewise.
	(Dump::emit_indented_string): Likewise.
	(Dump::emit_generic_params): Likewise.
	(Dump::format_tuple_field): Likewise.
	(Dump::format_struct_field): Likewise.
	(Dump::format_function_common): Likewise.
	(Dump::visit_function_common): Likewise.
	* ast/rust-ast-dump.h: Declare new functions and add documentation.

Signed-off-by: Jakub Dupak <dev@jakubdupak.com>