gccrs: Repair 'gcc/rust/lang.opt' comment

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

gcc/rust/ChangeLog:

* lang.opt: Fix ordering of file.

gccrs: Cleanup unused parameters to fix the bootstrap build

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.

gccrs: Fix undefined behaviour issues on macos

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`.

gccrs: Add initial support for argument capture of closures

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.

gccrs: Add capture tracking to the type info for closures

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.

gccrs: Add closure binding's tracking to name resolution

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.

gccrs: Refactor name resolver to take a Rib::ItemType

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.

gccrs: Get rid of make builtin macro

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.

gccrs: Improve lexer dump

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>

gccrs: Remove default location. Add visibility location to create_* functions

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.

gccrs: ast: Dump no comma after self in fn params if it is the last one

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump remove /* stmp */ comment to not clutter the dump

gcc/rust/ChangeLog:

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

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

gccrs: ast: Remove unused include in rust-ast-dump.cc

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump generic parameters

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>

gccrs: ast: Dump type param type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump trait object type one bound

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump parenthesised type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump trait object type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump impl trait type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump impl trait type one bound

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump bare function type

+ 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>

gccrs: ast: Dump inferred type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump tuple type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump never type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump raw pointer type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump array type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump slice type

gcc/rust/ChangeLog:

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

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

gccrs: ast: Dump where clause and recursively needed nodes

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>

gccrs: ast: add visit overload for references

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>

gccrs: typecheck: Fix overzealous `delete` call

gcc/rust/ChangeLog:

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

gccrs: add Location to AST::Visibility

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.

gccrs: add lang item "phantom_data"

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.

gccrs: ast: Dump unit struct

gcc/rust/ChangeLog:

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

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

gccrs: ast: refer correctly to arguments in docs-strings

gcc/rust/ChangeLog:

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

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

gccrs: ast: transform helper methods to visits and add methods to simplify repeated patterns

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>

gccrs: ast: visitor pattern -> overload syntax compatibility layer

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add new visit function for overloading.
* ast/rust-ast-dump.h: Add documentation for layer.

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

gccrs: intrinsics: Implement atomic_load intrinsics

gcc/rust/ChangeLog:

* backend/rust-builtins.cc (BuiltinsContext::setup_atomic_fns): Declare atomic
load intrinsics.
* backend/rust-compile-intrinsic.cc (atomic_load_handler_inner): New handler.
(atomic_load_handler): Likewise.
(unchecked_op_handler): Remove `static` function qualifier.
(build_atomic_builtin_name): Handle load intrinsics.
(atomic_store_handler_inner): New handler.

gcc/testsuite/ChangeLog:

* rust/compile/torture/intrinsics-3.rs:
* rust/execute/torture/atomic_load.rs: New test.

gccrs: intrinsics: Cleanup error handling around atomic_store_*

gcc/rust/ChangeLog:

* backend/rust-compile-intrinsic.cc (check_for_basic_integer_type): New function.
(build_atomic_builtin_name): Use HIR Type instead of `tree`.
(atomic_store_handler_inner): Cleanup error handling.
(unchecked_op_inner): Likewise.

gcc/testsuite/ChangeLog:

* rust/compile/torture/intrinsics-5.rs: Fix error message.

gccrs: intrinsics: Use lambdas for wrapping_<op> intrinsics

gcc/rust/ChangeLog:

* backend/rust-compile-intrinsic.cc (wrapping_op_handler): Refactor to return
an `std::function`.
(wrapping_op_handler_inner): Rename.
(wrapping_add_handler): Remove function.
(wrapping_sub_handler): Likewise.
(wrapping_mul_handler): Likewise.

gccrs: intrinsics: Add unchecked operation intrinsics

gcc/rust/ChangeLog:

* backend/rust-compile-intrinsic.cc (is_basic_integer_type): New function.
(unchecked_op_inner): New handler.
(unchecked_op_handler): New handler.

gcc/testsuite/ChangeLog:

* rust/compile/torture/intrinsics-6.rs: New test.
* rust/compile/torture/intrinsics-7.rs: New test.

gccrs: intrinsics: Add early implementation for atomic_store_{seqcst, relaxed, release}

gcc/rust/ChangeLog:

* backend/rust-builtins.cc (BuiltinsContext::setup_atomic_fns): New function.
(BuiltinsContext::setup): Call `setup_atomic_fns`.
* backend/rust-builtins.h: Declare `setup_atomic_fns`.
* backend/rust-compile-intrinsic.cc (atomic_store_handler_inner): New function.
(atomic_store_handler): New handler.
(make_unsigned_long_tree): Add helper around making unsigned long trees.
(prefetch_data_handler): Use `make_unsigned_long_tree`.
(build_atomic_builtin_name): New function.

gcc/testsuite/ChangeLog:

* rust/compile/torture/intrinsics-4.rs: New test.
* rust/compile/torture/intrinsics-5.rs: New test.
* rust/execute/torture/atomic_store.rs: New test.

gccrs: constexpr: Add `rust_sorry_at` in places relying on init values

gcc/rust/ChangeLog:

* backend/rust-constexpr.cc (build_anon_member_initialization): Workaround uninitialized
values.
(build_data_member_initialization): Likewise.

gccrs: intrinsics: Add `sorry_handler` intrinsic handler

gcc/rust/ChangeLog:

* backend/rust-compile-intrinsic.cc (sorry_handler): New intrinsic handler.

gcc/testsuite/ChangeLog:

* rust/compile/torture/intrinsics-3.rs: New test.

gccrs: builtins: Rename all bang macro handlers

gcc/rust/ChangeLog:

* expand/rust-macro-builtins.cc (MacroBuiltin::assert): Rename to...
(MacroBuiltin::assert_handler): ..this.
(MacroBuiltin::file): Rename to...
(MacroBuiltin::file_handler): ..this.
(MacroBuiltin::column): Rename to...
(MacroBuiltin::column_handler): ..this.
(MacroBuiltin::include_bytes): Rename to...
(MacroBuiltin::include_bytes_handler): ..this.
(MacroBuiltin::include_str): Rename to...
(MacroBuiltin::include_str_handler): ..this.
(MacroBuiltin::compile_error): Rename to...
(MacroBuiltin::compile_error_handler): ..this.
(MacroBuiltin::concat): Rename to...
(MacroBuiltin::concat_handler): ..this.
(MacroBuiltin::env): Rename to...
(MacroBuiltin::env_handler): ..this.
(MacroBuiltin::cfg): Rename to...
(MacroBuiltin::cfg_handler): ..this.
(MacroBuiltin::include): Rename to...
(MacroBuiltin::include_handler): ..this.
(MacroBuiltin::line): Rename to...
(MacroBuiltin::line_handler): ..this.
* expand/rust-macro-builtins.h: Rename all handlers.
* util/rust-hir-map.cc (Mappings::insert_macro_def): Use new handler
names.

gccrs: rust: Allow gccrs to build on x86_64-apple-darwin with clang/libc++

gcc/rust/ChangeLog:

* util/rust-inline-visitor.h: Remove some offending system includes.

gccrs: Implement the inline visitor

gcc/rust/ChangeLog:

* util/rust-inline-visitor.h: New file.

gccrs: Support Closure calls as generic trait bounds

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc (CompileExpr::visit): Refactor checking of closures.
(CompileExpr::generate_possible_fn_trait_call): New function.
* backend/rust-compile-expr.h: Declare `generate_possible_fn_trait_call`.

gcc/testsuite/ChangeLog:

* rust/execute/torture/closure2.rs: New test.

gccrs: Add missing type resolution for function type segments

gcc/rust/ChangeLog:

* typecheck/rust-tyty-bounds.cc (TypeCheckBase::get_predicate_from_bound): Add missing
implementation.

gccrs: Add missing hir lowering to function type-path segments

gcc/rust/ChangeLog:

* Make-lang.in: Compile rust-ast-lower-type.cc.
* ast/rust-path.h: Add `get_locus` method to `TypePathFunction`.
* hir/rust-ast-lower-base.cc (ASTLowerTypePath::visit): Move implementation to
rust-ast-lower-type.cc.
(ASTLowerQualifiedPathInType::visit): Likewise.
(ASTLoweringType::visit): Likewise.
* hir/rust-ast-lower-type.h: Move implementations to source file.
* hir/tree/rust-hir-path.h: Likewise.
* hir/rust-ast-lower-type.cc: New file.

gccrs: Add missing name resolution to Function type-path segments

gcc/rust/ChangeLog:

* resolve/rust-ast-resolve-type.cc (ResolveRelativeTypePath::go): Add missing handling of
function case.

gccrs: Closure support at CallExpr

gcc/rust/ChangeLog:

* backend/rust-compile-context.h: Add new functions: `insert_closure_decl` and
`lookup_closure_decl`.
* backend/rust-compile-expr.cc (CompileExpr::visit): Start compiling Closures properly.
(CompileExpr::generate_closure_function): New function.
(CompileExpr::generate_closure_fntype): Likewise.
* backend/rust-compile-expr.h: Declare `generate_closure_function` and
`generate_closure_fntype`.
* backend/rust-compile-type.cc (TyTyResolveCompile::visit): Visit closure types properly.
* backend/rust-mangle.cc (legacy_mangle_name): Add support for closures.
* backend/rust-tree.h (RS_CLOSURE_FLAG): Add new tree macro.
(RS_CLOSURE_TYPE_P): And checking for it on tree nodes.
* typecheck/rust-tyty.cc (ClosureType::is_equal): Add implementation.

gcc/testsuite/ChangeLog:

* rust/execute/torture/closure1.rs: New test.

gccrs: Initial Type resolution for closures

gcc/rust/ChangeLog:

* hir/tree/rust-hir-expr.h: Add `get_params` method.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Typecheck closure nodes.
(TypeCheckExpr::resolve_fn_trait_call): New function.
* typecheck/rust-hir-type-check-expr.h: Declare `resolve_fn_trait_call` and
`resolve_possible_fn_trait_call_method_name`.
* typecheck/rust-hir-type-check.h: Declare `get_context_type`.
* typecheck/rust-tyctx.cc (TypeCheckContextItem::get_context_type): New function.
* typecheck/rust-tyty-cmp.h: Visit closures properly.
* typecheck/rust-tyty-rules.h: Likewise.
* typecheck/rust-tyty.cc (BaseType::bounds_compatible): Add commented out assertin.
(ClosureType::as_string): Implement it.
(ClosureType::clone): Fix closure cloning.
(ClosureType::setup_fn_once_output): New function.
* typecheck/rust-tyty.h: Improve `ClosureType` class and declare `setup_fn_once_output`.

gccrs: Add closures to lints and error checking

gcc/rust/ChangeLog:

* checks/errors/rust-const-checker.cc (ConstChecker::visit): Visit closures properly.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit): Likewise.
* checks/lints/rust-lint-marklive.h: Likewise.

gccrs: Refactor method call type checking

gcc/rust/ChangeLog:

* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Simplify method
call type checking  by removing visitor and instead using one static cast. Use the
new interface.
* typecheck/rust-tyty-call.cc (TypeCheckMethodCallExpr::visit): Likewise.
(TypeCheckMethodCallExpr::go): Likewise.
(TypeCheckMethodCallExpr::check): Likewise.
* typecheck/rust-tyty-call.h (class TypeCheckMethodCallExpr): Likewise.
(class Argument): Likewise.

gccrs: Add name resolution for closures

gcc/rust/ChangeLog:

* resolve/rust-ast-resolve-expr.cc (ResolveExpr::visit): Visit closure properly when
name resolving.
(ResolveExpr::resolve_closure_param): Implement closure name resolving.
* resolve/rust-ast-resolve-expr.h: Declare visitors for closure types.

gccrs: Formatting cleanup in HIR lowering pattern

gcc/rust/ChangeLog:

* hir/rust-ast-lower-pattern.cc (ASTLoweringPattern::ASTLoweringPattern):
Improve formatting.
(ASTLoweringPattern::translate): Likewise.
* hir/rust-ast-lower-pattern.h: Likewise.
* resolve/rust-ast-resolve-expr.h: Likewise.

gccrs: Refactor expression hir lowering into cc file

gcc/rust/ChangeLog:

* Make-lang.in: Add new object file for expression lowering.
* ast/rust-expr.h: Move implementation of expr lowering to source file.
* backend/rust-compile-block.h: Likewise.
* backend/rust-compile-expr.cc (CompileExpr::visit): Likewise.
* backend/rust-compile-expr.h: Likewise.
* checks/errors/privacy/rust-privacy-reporter.cc (PrivacyReporter::visit): Likewise.
* checks/errors/privacy/rust-privacy-reporter.h: Likewise.
* checks/errors/rust-const-checker.cc (ConstChecker::visit): Likewise.
* checks/errors/rust-const-checker.h: Likewise.
* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit): Likewise.
* checks/errors/rust-unsafe-checker.h: Likewise.
* hir/rust-ast-lower-base.h: Likewise.
* hir/rust-ast-lower-expr.h (RUST_AST_LOWER_EXPR): Likewise.
* hir/rust-ast-lower.cc (ASTLoweringBase::lower_closure_param): Likewise.
* hir/rust-hir-dump.cc (Dump::visit): Likewise.
* hir/rust-hir-dump.h: Likewise.
* hir/tree/rust-hir-expr.h (class ClosureExpr): Likewise.
(class ClosureExprInner): Likewise.
(class ClosureExprInnerTyped): Likewise.
* hir/tree/rust-hir-full-decls.h (class ClosureExprInner): Likewise.
(class ClosureExprInnerTyped): Likewise.
* hir/tree/rust-hir-full-test.cc (ClosureExprInnerTyped::as_string): Likewise.
(ClosureExprInner::as_string): Likewise.
(ClosureExprInner::accept_vis): Likewise.
(ClosureExpr::accept_vis): Likewise.
(ClosureExprInnerTyped::accept_vis): Likewise.
* hir/tree/rust-hir-visitor.h: Likewise.
* hir/tree/rust-hir.h (class Expr): Likewise.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Likewise.
* typecheck/rust-hir-type-check-expr.h: Likewise.
* hir/rust-ast-lower-expr.cc: New file.

gccrs: Add missing fn_once_output langitem

gcc/rust/ChangeLog:

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

gccrs: ast: Improve Fragment API

gcc/rust/ChangeLog:

* ast/rust-ast-fragment.cc (Fragment::Fragment): Add better APIs.
(Fragment::complete): New function.
(Fragment::unexpanded): New function.
* ast/rust-ast-fragment.h: Declare new APIs and add documentation.
* expand/rust-attribute-visitor.h: Use new Fragment API.
* expand/rust-macro-builtins.cc (MacroBuiltin::file): Likewise.
(MacroBuiltin::column): Likewise.
(MacroBuiltin::include_bytes): Likewise.
(MacroBuiltin::include_str): Likewise.
(MacroBuiltin::concat): Likewise.
(MacroBuiltin::env): Likewise.
(MacroBuiltin::cfg): Likewise.
(MacroBuiltin::include): Likewise.
(MacroBuiltin::line): Likewise.
* expand/rust-macro-expand.cc (parse_many): Likewise.
(transcribe_expression): Likewise.
(transcribe_type): Likewise.
* expand/rust-macro-expand.h (struct MacroExpander): Likewise.

gccrs: rust: Replace uses of ASTFragment -> Fragment

gcc/rust/ChangeLog:

* ast/rust-ast.h (class ASTFragment): Remove old ASTFragment class.
* ast/rust-macro.h (class MacroRulesDefinition): Use new Fragment API.
* expand/rust-attribute-visitor.h: Likewise.
* expand/rust-macro-builtins.cc (macro_end_token): Likewise.
(MacroBuiltin::assert): Likewise.
(MacroBuiltin::file): Likewise.
(MacroBuiltin::column): Likewise.
(MacroBuiltin::include_bytes): Likewise.
(MacroBuiltin::include_str): Likewise.
(MacroBuiltin::compile_error): Likewise.
(MacroBuiltin::concat): Likewise.
(MacroBuiltin::env): Likewise.
(MacroBuiltin::cfg): Likewise.
(MacroBuiltin::include): Likewise.
(MacroBuiltin::line): Likewise.
* expand/rust-macro-builtins.h: Likewise.
* expand/rust-macro-expand.cc (MacroExpander::expand_decl_macro): Likewise.
(MacroExpander::expand_invoc): Likewise.
(MacroExpander::match_repetition): Likewise.
(parse_many): Likewise.
(transcribe_many_items): Likewise.
(transcribe_many_ext): Likewise.
(transcribe_many_trait_items): Likewise.
(transcribe_many_impl_items): Likewise.
(transcribe_many_trait_impl_items): Likewise.
(transcribe_expression): Likewise.
(transcribe_type): Likewise.
(transcribe_on_delimiter): Likewise.
(tokens_to_str): Likewise.
* expand/rust-macro-expand.h (struct MacroExpander): Likewise.
* util/rust-hir-map.cc (Mappings::insert_macro_def): Likewise.

gccrs: ast: Refactor ASTFragment -> Fragment class

gcc/rust/ChangeLog:

* Make-lang.in: Add `rust-ast-fragment.o` object file.
* ast/rust-ast-fragment.cc: New file.
* ast/rust-ast-fragment.h: New file.

gccrs: Add check for recursive trait cycles

gcc/rust/ChangeLog:

* typecheck/rust-hir-trait-resolve.cc (TraitResolver::resolve_trait): Check if a
trait query is currently in progress.
* typecheck/rust-hir-type-check.h (class TraitQueryGuard): Add helpers around
checking for trait queries and inserting them.

gcc/testsuite/ChangeLog:

* rust/compile/issue-1589.rs: New test.

gccrs: dump: Dump macro rules definition

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add missing visitors for macro definition dumping.
(get_delimiters): New function.
* ast/rust-ast-dump.h: Declare `get_delimiters` and add documentation.
* ast/rust-macro.h: Add `get_token_tree` method.

gccrs: ast: Module: unloaded module and inner attributes

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Properly handle unloaded modules.

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

gccrs: dump: Fix module dumping

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Fix formatting when dumping modules.

gccrs: dump: Dump items within modules

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Dump items in modules properly.

gccrs: dump: Emit visibility when dumping items

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc: Emit visibility when dumping items.

gccrs: Support outer attribute handling on trait items just like normal items

gcc/rust/ChangeLog:

* hir/rust-ast-lower-base.h (class ItemWrapper): New class.
* hir/rust-ast-lower-base.cc (ASTLoweringBase::handle_outer_attributes): Use
`ItemWrapper` class.
(ASTLoweringBase::handle_doc_item_attribute): Likewise.
(ASTLoweringBase::handle_lang_item_attribute): Likewise.
* hir/rust-ast-lower-implitem.h: Check outer attributes on items.
* hir/tree/rust-hir-item.h: Add `get_trait_locus` methods.
* hir/tree/rust-hir.h: Likewise.
* util/rust-hir-map.h: Add defId mappings and associated functions.
* util/rust-hir-map.cc (Mappings::insert_defid_mapping): Implement insertion to said
mappings.
(Mappings::lookup_trait_item_defid): And looking up said mappings.

gccrs: ast: dump TypeAlias

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add code for dumping type aliases.

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

gccrs: Refactor TraitResolver to not require a visitor

gcc/rust/ChangeLog:

* typecheck/rust-hir-trait-resolve.cc (TraitResolver::TraitResolver): Do not nullptr init
`resolved_trait_reference` anymore.
(TraitResolver::resolve_path): Simplify function and rename to...
(TraitResolver::resolve_path_to_trait): ...this.
(TraitResolver::lookup_path): Use new interface.
* typecheck/rust-hir-trait-resolve.h (class TraitResolver): Do not inherit `HIRFullVisitor`
class anymore.

gccrs: ast: dump: RangeExprs

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add dump for RangeExprs.

gccrs: ast: dump: various simple Exprs

Adds dump for:
- BorrowExpr
- DereferenceExpr
- ErrorPropagationExpr
- NegationExpr
- TypeCastExpr
- GroupedExpr

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add dump for, BorrowExpr, DereferenceExpr,
ErrorPropagationExpr, NegationExpr, TypeCastExpr and GroupedExpr.

gccrs: ast: dump: ArrayExpr

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add dump code for ArrayExpr.

gccrs: ast: dump: ComparisonExpr and LazyBooleanExpr

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Add dumps for ComparisonExpr and
LazyBooleanExpr.

gccrs: ast: dump: minor fixups to IfExpr formatting

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Fix IfExpr formatting.

gccrs: ast: dump: fix extra newline in block without tail

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Fix block formatting.

gccrs: Method resolution must support multiple candidates

This patch fixes bad method resolution in our operator_overload_9 case.
When we have a &mut reference to something and we deref we must resolve to
the mutable reference impl block. The interface we are using to resolve
methods is the can_eq interface which allows for permissive mutability
which means allowing for mutable reference being unified with an immutable
one. This meant we actual match against both the immutable and mutable
version leading to multiple candidate error.

The fix here adds a method resolution flag to the can_eq interface so that
we enforce mutability equality. The other hack is that we do not allow
can_eq of ParamTypes to generic Slices. I think there is some subtle thing
going on for that case. The Rustc method resolver actually filters the
impl blocks for reference types based looking up the relevant lang items
we need to do this as well but is a much larger refactor to our method
resolver which should be done seperately.

Fixes #1588

gcc/rust/ChangeLog:

* typecheck/rust-autoderef.cc: Add support for multiple resolution candidates.
* typecheck/rust-hir-dot-operator.cc (MethodResolver::MethodResolver): Edit
`try_result` field and change constructor.
(MethodResolver::Probe): Return set of candidates instead of singular candidate.
(MethodResolver::select): Add better implementation to account for multiple
candidates.
* typecheck/rust-hir-dot-operator.h (struct MethodCandidate): Overload comparison
operator in order to store them in `std::set`.
* typecheck/rust-hir-inherent-impl-overlap.h: Do not fail assertion on missing type.
* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Adapt code to use
multiple candidates.
* typecheck/rust-tyty.cc (set_cmp_autoderef_mode): Add code to handle automatic
derefs properly.
(reset_cmp_autoderef_mode): Add helper function to reset said mode.
* typecheck/rust-tyty.h (set_cmp_autoderef_mode): Declare function.
(reset_cmp_autoderef_mode): Likewise.
* typecheck/rust-tyty-cmp.h: Add handling of `autoderef_cmp_flag`

gcc/testsuite/ChangeLog:

* rust/compile/generics7.rs: Fix test with missing assertion.
* rust/execute/torture/operator_overload_9.rs: Fix test assertion.

gccrs: Add ABI mappings for rust-call to map to ABI::RUST

gcc/rust/ChangeLog:

* util/rust-abi.cc (get_abi_from_string): Add missing "rust-call"
possibility for ABI variant.

gccrs: Add mappings for fn_once lang item

gcc/rust/ChangeLog:

* util/rust-lang-item.h: Add `fn_once` lang item.

gccrs: Support type resolution on super traits on dyn objects

When checking if specified bounds satisfy other bounds we must lookup the
super traits. To finish the support for super traits we need to redo the
computation of method addresses to support super traits.

Addresses #914

gcc/rust/ChangeLog:

* backend/rust-compile.cc: Add note about missing support for super
traits.
* typecheck/rust-tyty.cc (BaseType::satisfies_bound): New function.
(BaseType::bounds_compatible): New function.
(DynamicObjectType::get_object_items): New function.
* typecheck/rust-hir-trait-ref.h: Use new API to perform type resolution
on dyn objects.

gccrs: early-name-resolver: Add simple macro name resolution

This name resolver performs the same macro name resolution as what was
previously done by the AttrVisitor visitor and macro expander.

It also resolves macro expressions in builtin-macros properly, as well
as expanded AST nodes when necessary.

gcc/rust/ChangeLog:

* Make-lang.in: Compile early name resolver.
* expand/rust-attribute-visitor.cc (AttrVisitor::visit): Move macro
name resolution.
* expand/rust-macro-builtins.cc (try_expand_macro_expression): Run ENR
when recursively expanding macros.
* expand/rust-macro-expand.cc (MacroExpander::expand_invoc): No longer
perform name resolution in `expand_invoc`.
* expand/rust-macro-expand.h (struct MacroExpander): Keep ENR within
MacroExpander.
* rust-session-manager.cc (Session::expansion): Run ENR.
* resolve/rust-early-name-resolver.cc: New file.
* resolve/rust-early-name-resolver.h: New file.

gccrs: ast: Add accept_vis() method to `GenericArg`

gcc/rust/ChangeLog:

* ast/rust-path.h: Add `accept_vis` method to `GenericArg` class.

gccrs: rust-ast-resolve-item: Add note about resolving glob uses

gcc/rust/ChangeLog:

* resolve/rust-ast-resolve-item.cc (ResolveItem::visit): Add note for
glob import resolving.

gccrs: mappings: Add MacroInvocation -> MacroRulesDef mappings

gcc/rust/ChangeLog:

* util/rust-hir-map.h: Add new mappings.
* util/rust-hir-map.cc (Mappings::insert_macro_invocation): Add insertion
function into mappings.
(Mappings::lookup_macro_invocation): Add lookup function for mappings.

gccrs: fix ICE on missing closing paren

Fix crash (segfault) on a missing closing parenthesis when parsing the
expressions in a block. The returned `expr` was missing a check before being
used.

Add corresponding test.

Signed-off-by: Marc Poulhiès <dkm@kataplop.net>
gcc/rust/ChangeLog:

* parse/rust-parse-impl.h (Parser::parse_stmt_or_expr_without_block):
Check if `expr` is valid after parsing it.

gcc/testsuite/ChangeLog:

* rust/compile/missing_closing_paren.rs: New test.

gccrs: intrinsics: Add data prefetching intrinsics

gcc/rust/ChangeLog:

* backend/rust-builtins.cc (BuiltinsContext::setup): Declare prefetch
intrinsics.
* backend/rust-compile-intrinsic.cc (enum class Prefetch): Add kinds of
prefetch intrinsics.
(prefetch_data_handler): New function.
(prefetch_read_data): Likewise.
(prefetch_write_data): Likewise.

gcc/testsuite/ChangeLog:

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

gccrs: ast: dump structs, enums and unions

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Fill empty functions for
structs, enums and unions.

gccrs: ast: dump: add format_{tuple,struct}_field helpers

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::format_tuple_field): New.
(Dump::format_struct_field): New.
* ast/rust-ast-dump.h (format_tuple_field): New.
(format_struct_field): New.

gccrs: ast: dump: add emit_generic_params helper

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): move generic params dump ...
(Dump::emit_generic_params): ... here.
* ast/rust-ast-dump.h (emit_generic_params): New.

gccrs: Support looking up super traits for trait items

When supporting calls to super traits we need to allow lookups based on
the super traits as specified on the TraitReferences.

Fixes #1555

gcc/rust/ChangeLog:

* typecheck/rust-hir-trait-ref.h (lookup_trait_item): Add lookup
in super_trait.

gcc/testsuite/ChangeLog:

* rust/compile/torture/issue-1555.rs: New test.

gccrs: Ensure uniqueness on Path probe's

When we lookup names in paths such as Foo::bar, foo is a type we resolve
and then we lookup 'bar' based on what type Foo is which includes probing
relevant bounds of this type. We currently return a vector of possible
candidates and this patch changes it so that we return a set of unique
items based on DefId.

Addresses #1555

gcc/rust/ChangeLog:

* backend/rust-compile-expr.cc
(CompileExpr::resolve_method_address): Use auto and minor change
in candidate init.
* typecheck/rust-hir-type-check-path.cc
(TypeCheckExpr::resolve_segments): Likewise.
* typecheck/rust-hir-type-check-type.cc: Likewise.
* backend/rust-compile-resolve-path.cc
(HIRCompileBase::query_compile): Likewise. Removecall to
set_ty_ref.
* typecheck/rust-hir-path-probe.h (struct PathProbeCandidate): Add
locus initializer in ctor, implement get_defid.
(class PathProbeType::Probe): return a set instead of vector.
Adjust class impl.
(class ReportMultipleCandidateError): Do not inherit from
HIRImplVisitor anymore and remove corresponding impl. Adjust for
change in Probe. Simplify Report handling.
(class PathProbeImplTrait::Probe): Adjust return type.

gccrs: Track DefId on ADT variants

We must track the DefID on variants for algebraic data types as this will
allow us to enforce unique'ness on path queries relating to this.

gcc/rust/ChangeLog:

* typecheck/rust-hir-type-check-enumitem.cc
(TypeCheckEnumItem::visit): Adjust VariantDef ctor calls with
DefID.
* typecheck/rust-hir-type-check-item.cc (TypeCheckItem::visit):
Likewise.
* typecheck/rust-tyty.h (VariantDef): Add defid parameter to ctor.

gccrs: builtins: Move implementation into source file

gcc/rust/ChangeLog:

* Make-lang.in: Add `rust-builtins.o` as target
* backend/rust-builtins.h: Refactor to new file.
* backend/rust-builtins.cc: New file.

gccrs: ast: dump If expressions

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Implement visitor for If
expressions.

gccrs: ast: dump assignment and compound assignment expr

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::visit): Dump assignment and compound
assignment expressions.

gccrs: testing: try loop in const function

Signed-off-by: Faisal Abbas <90.abbasfaisal@gmail.com>
gcc/testsuite/ChangeLog:

* rust/compile/const9.rs: New test.

Signed-off-by: Faisal Abbas <faisal.abbas@elastica.co>

gccrs: Add catch for recusive type queries

When we have a type query where by generic substitution occurs we can hit
the case where we need to Probe the bounds of the substited item to
determine whether the the bounds are compatible this can cause us to
end up querying the same type recursively.

Fixes #1550

gcc/rust/ChangeLog:

* typecheck/rust-hir-type-check-base.cc (TypeCheckBase::query_type):
Check for recursive queries.
* typecheck/rust-hir-type-check.h: New functions: `query_completed`,
`query_in_progress`, `insert_query`.
* typecheck/rust-tyty-bounds.cc (TypeBoundsProbe::scan): Use `query_type` API.

gccrs: dump: Emit visibility when dumping items

gcc/rust/ChangeLog:

* ast/rust-ast-dump.cc (Dump::emit_visibility): New function.
(Dump::visit): Call into `emit_visibility`.
(Dump::format_function_common): Likewise.
* ast/rust-ast-dump.h: Declare `emit_visibility`.

gccrs: visibility: Rename get_public_vis_type -> get_vis_type

gcc/rust/ChangeLog:

* ast/rust-item.h: Rename get_public_vis_type.
* hir/rust-ast-lower.cc (translate_visibility): Use new name.