| use crate::errors; |
| use crate::interface::{Compiler, Result}; |
| use crate::proc_macro_decls; |
| use crate::util; |
| |
| use ast::CRATE_NODE_ID; |
| use rustc_ast::{self as ast, visit}; |
| use rustc_borrowck as mir_borrowck; |
| use rustc_codegen_ssa::traits::CodegenBackend; |
| use rustc_data_structures::parallel; |
| use rustc_data_structures::steal::Steal; |
| use rustc_data_structures::sync::{Lrc, OnceCell, WorkerLocal}; |
| use rustc_errors::PResult; |
| use rustc_expand::base::{ExtCtxt, LintStoreExpand, ResolverExpand}; |
| use rustc_hir::def_id::{StableCrateId, LOCAL_CRATE}; |
| use rustc_lint::{unerased_lint_store, BufferedEarlyLint, EarlyCheckNode, LintStore}; |
| use rustc_metadata::creader::CStore; |
| use rustc_middle::arena::Arena; |
| use rustc_middle::dep_graph::DepGraph; |
| use rustc_middle::ty::query::{ExternProviders, Providers}; |
| use rustc_middle::ty::{self, GlobalCtxt, RegisteredTools, TyCtxt}; |
| use rustc_mir_build as mir_build; |
| use rustc_parse::{parse_crate_from_file, parse_crate_from_source_str, validate_attr}; |
| use rustc_passes::{self, hir_stats, layout_test}; |
| use rustc_plugin_impl as plugin; |
| use rustc_query_impl::{OnDiskCache, Queries as TcxQueries}; |
| use rustc_resolve::Resolver; |
| use rustc_session::config::{CrateType, Input, OutputFilenames, OutputType}; |
| use rustc_session::cstore::{CrateStoreDyn, MetadataLoader, Untracked}; |
| use rustc_session::output::filename_for_input; |
| use rustc_session::search_paths::PathKind; |
| use rustc_session::{Limit, Session}; |
| use rustc_span::symbol::{sym, Symbol}; |
| use rustc_span::FileName; |
| use rustc_target::spec::PanicStrategy; |
| use rustc_trait_selection::traits; |
| |
| use std::any::Any; |
| use std::ffi::OsString; |
| use std::io::{self, BufWriter, Write}; |
| use std::path::{Path, PathBuf}; |
| use std::sync::{Arc, LazyLock}; |
| use std::{env, fs, iter}; |
| |
| pub fn parse<'a>(sess: &'a Session) -> PResult<'a, ast::Crate> { |
| let krate = sess.time("parse_crate", || match &sess.io.input { |
| Input::File(file) => parse_crate_from_file(file, &sess.parse_sess), |
| Input::Str { input, name } => { |
| parse_crate_from_source_str(name.clone(), input.clone(), &sess.parse_sess) |
| } |
| })?; |
| |
| if sess.opts.unstable_opts.input_stats { |
| eprintln!("Lines of code: {}", sess.source_map().count_lines()); |
| eprintln!("Pre-expansion node count: {}", count_nodes(&krate)); |
| } |
| |
| if let Some(ref s) = sess.opts.unstable_opts.show_span { |
| rustc_ast_passes::show_span::run(sess.diagnostic(), s, &krate); |
| } |
| |
| if sess.opts.unstable_opts.hir_stats { |
| hir_stats::print_ast_stats(&krate, "PRE EXPANSION AST STATS", "ast-stats-1"); |
| } |
| |
| Ok(krate) |
| } |
| |
| fn count_nodes(krate: &ast::Crate) -> usize { |
| let mut counter = rustc_ast_passes::node_count::NodeCounter::new(); |
| visit::walk_crate(&mut counter, krate); |
| counter.count |
| } |
| |
| pub fn register_plugins<'a>( |
| sess: &'a Session, |
| metadata_loader: &'a dyn MetadataLoader, |
| register_lints: impl Fn(&Session, &mut LintStore), |
| mut krate: ast::Crate, |
| crate_name: Symbol, |
| ) -> Result<(ast::Crate, LintStore)> { |
| krate = sess.time("attributes_injection", || { |
| rustc_builtin_macros::cmdline_attrs::inject( |
| krate, |
| &sess.parse_sess, |
| &sess.opts.unstable_opts.crate_attr, |
| ) |
| }); |
| |
| let (krate, features) = rustc_expand::config::features(sess, krate, CRATE_NODE_ID); |
| // these need to be set "early" so that expansion sees `quote` if enabled. |
| sess.init_features(features); |
| |
| let crate_types = util::collect_crate_types(sess, &krate.attrs); |
| sess.init_crate_types(crate_types); |
| |
| let stable_crate_id = StableCrateId::new( |
| crate_name, |
| sess.crate_types().contains(&CrateType::Executable), |
| sess.opts.cg.metadata.clone(), |
| ); |
| sess.stable_crate_id.set(stable_crate_id).expect("not yet initialized"); |
| rustc_incremental::prepare_session_directory(sess, crate_name, stable_crate_id)?; |
| |
| if sess.opts.incremental.is_some() { |
| sess.time("incr_comp_garbage_collect_session_directories", || { |
| if let Err(e) = rustc_incremental::garbage_collect_session_directories(sess) { |
| warn!( |
| "Error while trying to garbage collect incremental \ |
| compilation cache directory: {}", |
| e |
| ); |
| } |
| }); |
| } |
| |
| let mut lint_store = rustc_lint::new_lint_store(sess.enable_internal_lints()); |
| register_lints(sess, &mut lint_store); |
| |
| let registrars = |
| sess.time("plugin_loading", || plugin::load::load_plugins(sess, metadata_loader, &krate)); |
| sess.time("plugin_registration", || { |
| let mut registry = plugin::Registry { lint_store: &mut lint_store }; |
| for registrar in registrars { |
| registrar(&mut registry); |
| } |
| }); |
| |
| Ok((krate, lint_store)) |
| } |
| |
| fn pre_expansion_lint<'a>( |
| sess: &Session, |
| lint_store: &LintStore, |
| registered_tools: &RegisteredTools, |
| check_node: impl EarlyCheckNode<'a>, |
| node_name: Symbol, |
| ) { |
| sess.prof.generic_activity_with_arg("pre_AST_expansion_lint_checks", node_name.as_str()).run( |
| || { |
| rustc_lint::check_ast_node( |
| sess, |
| true, |
| lint_store, |
| registered_tools, |
| None, |
| rustc_lint::BuiltinCombinedPreExpansionLintPass::new(), |
| check_node, |
| ); |
| }, |
| ); |
| } |
| |
| // Cannot implement directly for `LintStore` due to trait coherence. |
| struct LintStoreExpandImpl<'a>(&'a LintStore); |
| |
| impl LintStoreExpand for LintStoreExpandImpl<'_> { |
| fn pre_expansion_lint( |
| &self, |
| sess: &Session, |
| registered_tools: &RegisteredTools, |
| node_id: ast::NodeId, |
| attrs: &[ast::Attribute], |
| items: &[rustc_ast::ptr::P<ast::Item>], |
| name: Symbol, |
| ) { |
| pre_expansion_lint(sess, self.0, registered_tools, (node_id, attrs, items), name); |
| } |
| } |
| |
| /// Runs the "early phases" of the compiler: initial `cfg` processing, loading compiler plugins, |
| /// syntax expansion, secondary `cfg` expansion, synthesis of a test |
| /// harness if one is to be provided, injection of a dependency on the |
| /// standard library and prelude, and name resolution. |
| #[instrument(level = "trace", skip(krate, resolver))] |
| fn configure_and_expand(mut krate: ast::Crate, resolver: &mut Resolver<'_, '_>) -> ast::Crate { |
| let tcx = resolver.tcx(); |
| let sess = tcx.sess; |
| let lint_store = unerased_lint_store(tcx); |
| let crate_name = tcx.crate_name(LOCAL_CRATE); |
| pre_expansion_lint(sess, lint_store, resolver.registered_tools(), &krate, crate_name); |
| rustc_builtin_macros::register_builtin_macros(resolver); |
| |
| krate = sess.time("crate_injection", || { |
| rustc_builtin_macros::standard_library_imports::inject(krate, resolver, sess) |
| }); |
| |
| util::check_attr_crate_type(sess, &krate.attrs, &mut resolver.lint_buffer()); |
| |
| // Expand all macros |
| krate = sess.time("macro_expand_crate", || { |
| // Windows dlls do not have rpaths, so they don't know how to find their |
| // dependencies. It's up to us to tell the system where to find all the |
| // dependent dlls. Note that this uses cfg!(windows) as opposed to |
| // targ_cfg because syntax extensions are always loaded for the host |
| // compiler, not for the target. |
| // |
| // This is somewhat of an inherently racy operation, however, as |
| // multiple threads calling this function could possibly continue |
| // extending PATH far beyond what it should. To solve this for now we |
| // just don't add any new elements to PATH which are already there |
| // within PATH. This is basically a targeted fix at #17360 for rustdoc |
| // which runs rustc in parallel but has been seen (#33844) to cause |
| // problems with PATH becoming too long. |
| let mut old_path = OsString::new(); |
| if cfg!(windows) { |
| old_path = env::var_os("PATH").unwrap_or(old_path); |
| let mut new_path = sess.host_filesearch(PathKind::All).search_path_dirs(); |
| for path in env::split_paths(&old_path) { |
| if !new_path.contains(&path) { |
| new_path.push(path); |
| } |
| } |
| env::set_var( |
| "PATH", |
| &env::join_paths( |
| new_path.iter().filter(|p| env::join_paths(iter::once(p)).is_ok()), |
| ) |
| .unwrap(), |
| ); |
| } |
| |
| // Create the config for macro expansion |
| let features = sess.features_untracked(); |
| let recursion_limit = get_recursion_limit(&krate.attrs, sess); |
| let cfg = rustc_expand::expand::ExpansionConfig { |
| features: Some(features), |
| recursion_limit, |
| trace_mac: sess.opts.unstable_opts.trace_macros, |
| should_test: sess.opts.test, |
| span_debug: sess.opts.unstable_opts.span_debug, |
| proc_macro_backtrace: sess.opts.unstable_opts.proc_macro_backtrace, |
| ..rustc_expand::expand::ExpansionConfig::default(crate_name.to_string()) |
| }; |
| |
| let lint_store = LintStoreExpandImpl(lint_store); |
| let mut ecx = ExtCtxt::new(sess, cfg, resolver, Some(&lint_store)); |
| // Expand macros now! |
| let krate = sess.time("expand_crate", || ecx.monotonic_expander().expand_crate(krate)); |
| |
| // The rest is error reporting |
| |
| sess.parse_sess.buffered_lints.with_lock(|buffered_lints: &mut Vec<BufferedEarlyLint>| { |
| buffered_lints.append(&mut ecx.buffered_early_lint); |
| }); |
| |
| sess.time("check_unused_macros", || { |
| ecx.check_unused_macros(); |
| }); |
| |
| // If we hit a recursion limit, exit early to avoid later passes getting overwhelmed |
| // with a large AST |
| if ecx.reduced_recursion_limit.is_some() { |
| sess.abort_if_errors(); |
| unreachable!(); |
| } |
| |
| if cfg!(windows) { |
| env::set_var("PATH", &old_path); |
| } |
| |
| krate |
| }); |
| |
| sess.time("maybe_building_test_harness", || { |
| rustc_builtin_macros::test_harness::inject(sess, resolver, &mut krate) |
| }); |
| |
| let has_proc_macro_decls = sess.time("AST_validation", || { |
| rustc_ast_passes::ast_validation::check_crate(sess, &krate, resolver.lint_buffer()) |
| }); |
| |
| let crate_types = sess.crate_types(); |
| let is_executable_crate = crate_types.contains(&CrateType::Executable); |
| let is_proc_macro_crate = crate_types.contains(&CrateType::ProcMacro); |
| |
| if crate_types.len() > 1 { |
| if is_executable_crate { |
| sess.emit_err(errors::MixedBinCrate); |
| } |
| if is_proc_macro_crate { |
| sess.emit_err(errors::MixedProcMacroCrate); |
| } |
| } |
| |
| if is_proc_macro_crate && sess.panic_strategy() == PanicStrategy::Abort { |
| sess.emit_warning(errors::ProcMacroCratePanicAbort); |
| } |
| |
| krate = sess.time("maybe_create_a_macro_crate", || { |
| let is_test_crate = sess.opts.test; |
| rustc_builtin_macros::proc_macro_harness::inject( |
| sess, |
| resolver, |
| krate, |
| is_proc_macro_crate, |
| has_proc_macro_decls, |
| is_test_crate, |
| sess.diagnostic(), |
| ) |
| }); |
| |
| // Done with macro expansion! |
| |
| if sess.opts.unstable_opts.input_stats { |
| eprintln!("Post-expansion node count: {}", count_nodes(&krate)); |
| } |
| |
| if sess.opts.unstable_opts.hir_stats { |
| hir_stats::print_ast_stats(&krate, "POST EXPANSION AST STATS", "ast-stats-2"); |
| } |
| |
| resolver.resolve_crate(&krate); |
| |
| // Needs to go *after* expansion to be able to check the results of macro expansion. |
| sess.time("complete_gated_feature_checking", || { |
| rustc_ast_passes::feature_gate::check_crate(&krate, sess); |
| }); |
| |
| // Add all buffered lints from the `ParseSess` to the `Session`. |
| sess.parse_sess.buffered_lints.with_lock(|buffered_lints| { |
| info!("{} parse sess buffered_lints", buffered_lints.len()); |
| for early_lint in buffered_lints.drain(..) { |
| resolver.lint_buffer().add_early_lint(early_lint); |
| } |
| }); |
| |
| // Gate identifiers containing invalid Unicode codepoints that were recovered during lexing. |
| sess.parse_sess.bad_unicode_identifiers.with_lock(|identifiers| { |
| let mut identifiers: Vec<_> = identifiers.drain().collect(); |
| identifiers.sort_by_key(|&(key, _)| key); |
| for (ident, mut spans) in identifiers.into_iter() { |
| spans.sort(); |
| if ident == sym::ferris { |
| let first_span = spans[0]; |
| sess.emit_err(errors::FerrisIdentifier { spans, first_span }); |
| } else { |
| sess.emit_err(errors::EmojiIdentifier { spans, ident }); |
| } |
| } |
| }); |
| |
| sess.time("early_lint_checks", || { |
| let lint_buffer = Some(std::mem::take(resolver.lint_buffer())); |
| rustc_lint::check_ast_node( |
| sess, |
| false, |
| lint_store, |
| resolver.registered_tools(), |
| lint_buffer, |
| rustc_lint::BuiltinCombinedEarlyLintPass::new(), |
| &krate, |
| ) |
| }); |
| |
| krate |
| } |
| |
| // Returns all the paths that correspond to generated files. |
| fn generated_output_paths( |
| sess: &Session, |
| outputs: &OutputFilenames, |
| exact_name: bool, |
| crate_name: Symbol, |
| ) -> Vec<PathBuf> { |
| let mut out_filenames = Vec::new(); |
| for output_type in sess.opts.output_types.keys() { |
| let file = outputs.path(*output_type); |
| match *output_type { |
| // If the filename has been overridden using `-o`, it will not be modified |
| // by appending `.rlib`, `.exe`, etc., so we can skip this transformation. |
| OutputType::Exe if !exact_name => { |
| for crate_type in sess.crate_types().iter() { |
| let p = filename_for_input(sess, *crate_type, crate_name, outputs); |
| out_filenames.push(p); |
| } |
| } |
| OutputType::DepInfo if sess.opts.unstable_opts.dep_info_omit_d_target => { |
| // Don't add the dep-info output when omitting it from dep-info targets |
| } |
| _ => { |
| out_filenames.push(file); |
| } |
| } |
| } |
| out_filenames |
| } |
| |
| // Runs `f` on every output file path and returns the first non-None result, or None if `f` |
| // returns None for every file path. |
| fn check_output<F, T>(output_paths: &[PathBuf], f: F) -> Option<T> |
| where |
| F: Fn(&PathBuf) -> Option<T>, |
| { |
| for output_path in output_paths { |
| if let Some(result) = f(output_path) { |
| return Some(result); |
| } |
| } |
| None |
| } |
| |
| fn output_contains_path(output_paths: &[PathBuf], input_path: &Path) -> bool { |
| let input_path = input_path.canonicalize().ok(); |
| if input_path.is_none() { |
| return false; |
| } |
| let check = |output_path: &PathBuf| { |
| if output_path.canonicalize().ok() == input_path { Some(()) } else { None } |
| }; |
| check_output(output_paths, check).is_some() |
| } |
| |
| fn output_conflicts_with_dir(output_paths: &[PathBuf]) -> Option<PathBuf> { |
| let check = |output_path: &PathBuf| output_path.is_dir().then(|| output_path.clone()); |
| check_output(output_paths, check) |
| } |
| |
| fn escape_dep_filename(filename: &str) -> String { |
| // Apparently clang and gcc *only* escape spaces: |
| // https://llvm.org/klaus/clang/commit/9d50634cfc268ecc9a7250226dd5ca0e945240d4 |
| filename.replace(' ', "\\ ") |
| } |
| |
| // Makefile comments only need escaping newlines and `\`. |
| // The result can be unescaped by anything that can unescape `escape_default` and friends. |
| fn escape_dep_env(symbol: Symbol) -> String { |
| let s = symbol.as_str(); |
| let mut escaped = String::with_capacity(s.len()); |
| for c in s.chars() { |
| match c { |
| '\n' => escaped.push_str(r"\n"), |
| '\r' => escaped.push_str(r"\r"), |
| '\\' => escaped.push_str(r"\\"), |
| _ => escaped.push(c), |
| } |
| } |
| escaped |
| } |
| |
| fn write_out_deps( |
| sess: &Session, |
| cstore: &CrateStoreDyn, |
| outputs: &OutputFilenames, |
| out_filenames: &[PathBuf], |
| ) { |
| // Write out dependency rules to the dep-info file if requested |
| if !sess.opts.output_types.contains_key(&OutputType::DepInfo) { |
| return; |
| } |
| let deps_filename = outputs.path(OutputType::DepInfo); |
| |
| let result: io::Result<()> = try { |
| // Build a list of files used to compile the output and |
| // write Makefile-compatible dependency rules |
| let mut files: Vec<String> = sess |
| .source_map() |
| .files() |
| .iter() |
| .filter(|fmap| fmap.is_real_file()) |
| .filter(|fmap| !fmap.is_imported()) |
| .map(|fmap| escape_dep_filename(&fmap.name.prefer_local().to_string())) |
| .collect(); |
| |
| // Account for explicitly marked-to-track files |
| // (e.g. accessed in proc macros). |
| let file_depinfo = sess.parse_sess.file_depinfo.borrow(); |
| |
| let normalize_path = |path: PathBuf| { |
| let file = FileName::from(path); |
| escape_dep_filename(&file.prefer_local().to_string()) |
| }; |
| |
| let extra_tracked_files = |
| file_depinfo.iter().map(|path_sym| normalize_path(PathBuf::from(path_sym.as_str()))); |
| files.extend(extra_tracked_files); |
| |
| // We also need to track used PGO profile files |
| if let Some(ref profile_instr) = sess.opts.cg.profile_use { |
| files.push(normalize_path(profile_instr.as_path().to_path_buf())); |
| } |
| if let Some(ref profile_sample) = sess.opts.unstable_opts.profile_sample_use { |
| files.push(normalize_path(profile_sample.as_path().to_path_buf())); |
| } |
| |
| if sess.binary_dep_depinfo() { |
| if let Some(ref backend) = sess.opts.unstable_opts.codegen_backend { |
| if backend.contains('.') { |
| // If the backend name contain a `.`, it is the path to an external dynamic |
| // library. If not, it is not a path. |
| files.push(backend.to_string()); |
| } |
| } |
| |
| let cstore = cstore.as_any().downcast_ref::<CStore>().unwrap(); |
| for cnum in cstore.crates_untracked() { |
| let source = cstore.crate_source_untracked(cnum); |
| if let Some((path, _)) = &source.dylib { |
| files.push(escape_dep_filename(&path.display().to_string())); |
| } |
| if let Some((path, _)) = &source.rlib { |
| files.push(escape_dep_filename(&path.display().to_string())); |
| } |
| if let Some((path, _)) = &source.rmeta { |
| files.push(escape_dep_filename(&path.display().to_string())); |
| } |
| } |
| } |
| |
| let mut file = BufWriter::new(fs::File::create(&deps_filename)?); |
| for path in out_filenames { |
| writeln!(file, "{}: {}\n", path.display(), files.join(" "))?; |
| } |
| |
| // Emit a fake target for each input file to the compilation. This |
| // prevents `make` from spitting out an error if a file is later |
| // deleted. For more info see #28735 |
| for path in files { |
| writeln!(file, "{path}:")?; |
| } |
| |
| // Emit special comments with information about accessed environment variables. |
| let env_depinfo = sess.parse_sess.env_depinfo.borrow(); |
| if !env_depinfo.is_empty() { |
| let mut envs: Vec<_> = env_depinfo |
| .iter() |
| .map(|(k, v)| (escape_dep_env(*k), v.map(escape_dep_env))) |
| .collect(); |
| envs.sort_unstable(); |
| writeln!(file)?; |
| for (k, v) in envs { |
| write!(file, "# env-dep:{k}")?; |
| if let Some(v) = v { |
| write!(file, "={v}")?; |
| } |
| writeln!(file)?; |
| } |
| } |
| }; |
| |
| match result { |
| Ok(_) => { |
| if sess.opts.json_artifact_notifications { |
| sess.parse_sess |
| .span_diagnostic |
| .emit_artifact_notification(&deps_filename, "dep-info"); |
| } |
| } |
| Err(error) => { |
| sess.emit_fatal(errors::ErrorWritingDependencies { path: &deps_filename, error }); |
| } |
| } |
| } |
| |
| fn resolver_for_lowering<'tcx>( |
| tcx: TyCtxt<'tcx>, |
| (): (), |
| ) -> &'tcx Steal<(ty::ResolverAstLowering, Lrc<ast::Crate>)> { |
| let arenas = Resolver::arenas(); |
| let krate = tcx.crate_for_resolver(()).steal(); |
| let mut resolver = Resolver::new(tcx, &krate, &arenas); |
| let krate = configure_and_expand(krate, &mut resolver); |
| |
| // Make sure we don't mutate the cstore from here on. |
| tcx.untracked().cstore.leak(); |
| |
| let ty::ResolverOutputs { |
| global_ctxt: untracked_resolutions, |
| ast_lowering: untracked_resolver_for_lowering, |
| } = resolver.into_outputs(); |
| |
| let feed = tcx.feed_unit_query(); |
| feed.resolutions(tcx.arena.alloc(untracked_resolutions)); |
| tcx.arena.alloc(Steal::new((untracked_resolver_for_lowering, Lrc::new(krate)))) |
| } |
| |
| fn output_filenames(tcx: TyCtxt<'_>, (): ()) -> Arc<OutputFilenames> { |
| let sess = tcx.sess; |
| let _timer = sess.timer("prepare_outputs"); |
| let (_, krate) = &*tcx.resolver_for_lowering(()).borrow(); |
| let crate_name = tcx.crate_name(LOCAL_CRATE); |
| |
| // FIXME: rustdoc passes &[] instead of &krate.attrs here |
| let outputs = util::build_output_filenames(&krate.attrs, sess); |
| |
| let output_paths = |
| generated_output_paths(sess, &outputs, sess.io.output_file.is_some(), crate_name); |
| |
| // Ensure the source file isn't accidentally overwritten during compilation. |
| if let Some(ref input_path) = sess.io.input.opt_path() { |
| if sess.opts.will_create_output_file() { |
| if output_contains_path(&output_paths, input_path) { |
| sess.emit_fatal(errors::InputFileWouldBeOverWritten { path: input_path }); |
| } |
| if let Some(ref dir_path) = output_conflicts_with_dir(&output_paths) { |
| sess.emit_fatal(errors::GeneratedFileConflictsWithDirectory { |
| input_path, |
| dir_path, |
| }); |
| } |
| } |
| } |
| |
| if let Some(ref dir) = sess.io.temps_dir { |
| if fs::create_dir_all(dir).is_err() { |
| sess.emit_fatal(errors::TempsDirError); |
| } |
| } |
| |
| write_out_deps(sess, &*tcx.cstore_untracked(), &outputs, &output_paths); |
| |
| let only_dep_info = sess.opts.output_types.contains_key(&OutputType::DepInfo) |
| && sess.opts.output_types.len() == 1; |
| |
| if !only_dep_info { |
| if let Some(ref dir) = sess.io.output_dir { |
| if fs::create_dir_all(dir).is_err() { |
| sess.emit_fatal(errors::OutDirError); |
| } |
| } |
| } |
| |
| outputs.into() |
| } |
| |
| pub static DEFAULT_QUERY_PROVIDERS: LazyLock<Providers> = LazyLock::new(|| { |
| let providers = &mut Providers::default(); |
| providers.analysis = analysis; |
| providers.hir_crate = rustc_ast_lowering::lower_to_hir; |
| providers.output_filenames = output_filenames; |
| providers.resolver_for_lowering = resolver_for_lowering; |
| proc_macro_decls::provide(providers); |
| rustc_const_eval::provide(providers); |
| rustc_middle::hir::provide(providers); |
| mir_borrowck::provide(providers); |
| mir_build::provide(providers); |
| rustc_mir_transform::provide(providers); |
| rustc_monomorphize::provide(providers); |
| rustc_privacy::provide(providers); |
| rustc_hir_analysis::provide(providers); |
| rustc_hir_typeck::provide(providers); |
| ty::provide(providers); |
| traits::provide(providers); |
| rustc_passes::provide(providers); |
| rustc_traits::provide(providers); |
| rustc_ty_utils::provide(providers); |
| rustc_metadata::provide(providers); |
| rustc_lint::provide(providers); |
| rustc_symbol_mangling::provide(providers); |
| rustc_codegen_ssa::provide(providers); |
| *providers |
| }); |
| |
| pub static DEFAULT_EXTERN_QUERY_PROVIDERS: LazyLock<ExternProviders> = LazyLock::new(|| { |
| let mut extern_providers = ExternProviders::default(); |
| rustc_metadata::provide_extern(&mut extern_providers); |
| rustc_codegen_ssa::provide_extern(&mut extern_providers); |
| extern_providers |
| }); |
| |
| pub fn create_global_ctxt<'tcx>( |
| compiler: &'tcx Compiler, |
| lint_store: Lrc<LintStore>, |
| dep_graph: DepGraph, |
| untracked: Untracked, |
| queries: &'tcx OnceCell<TcxQueries<'tcx>>, |
| gcx_cell: &'tcx OnceCell<GlobalCtxt<'tcx>>, |
| arena: &'tcx WorkerLocal<Arena<'tcx>>, |
| hir_arena: &'tcx WorkerLocal<rustc_hir::Arena<'tcx>>, |
| ) -> &'tcx GlobalCtxt<'tcx> { |
| // We're constructing the HIR here; we don't care what we will |
| // read, since we haven't even constructed the *input* to |
| // incr. comp. yet. |
| dep_graph.assert_ignored(); |
| |
| let sess = &compiler.session(); |
| let query_result_on_disk_cache = rustc_incremental::load_query_result_cache(sess); |
| |
| let codegen_backend = compiler.codegen_backend(); |
| let mut local_providers = *DEFAULT_QUERY_PROVIDERS; |
| codegen_backend.provide(&mut local_providers); |
| |
| let mut extern_providers = *DEFAULT_EXTERN_QUERY_PROVIDERS; |
| codegen_backend.provide_extern(&mut extern_providers); |
| |
| if let Some(callback) = compiler.override_queries { |
| callback(sess, &mut local_providers, &mut extern_providers); |
| } |
| |
| let queries = queries.get_or_init(|| { |
| TcxQueries::new(local_providers, extern_providers, query_result_on_disk_cache) |
| }); |
| |
| sess.time("setup_global_ctxt", || { |
| gcx_cell.get_or_init(move || { |
| TyCtxt::create_global_ctxt( |
| sess, |
| lint_store, |
| arena, |
| hir_arena, |
| untracked, |
| dep_graph, |
| queries.on_disk_cache.as_ref().map(OnDiskCache::as_dyn), |
| queries.as_dyn(), |
| rustc_query_impl::query_callbacks(arena), |
| ) |
| }) |
| }) |
| } |
| |
| /// Runs the resolution, type-checking, region checking and other |
| /// miscellaneous analysis passes on the crate. |
| fn analysis(tcx: TyCtxt<'_>, (): ()) -> Result<()> { |
| rustc_passes::hir_id_validator::check_crate(tcx); |
| |
| let sess = tcx.sess; |
| let mut entry_point = None; |
| |
| sess.time("misc_checking_1", || { |
| parallel!( |
| { |
| entry_point = sess.time("looking_for_entry_point", || tcx.entry_fn(())); |
| |
| sess.time("looking_for_derive_registrar", || { |
| tcx.ensure().proc_macro_decls_static(()) |
| }); |
| |
| CStore::from_tcx(tcx).report_unused_deps(tcx); |
| }, |
| { |
| tcx.hir().par_for_each_module(|module| { |
| tcx.ensure().check_mod_loops(module); |
| tcx.ensure().check_mod_attrs(module); |
| tcx.ensure().check_mod_naked_functions(module); |
| tcx.ensure().check_mod_unstable_api_usage(module); |
| tcx.ensure().check_mod_const_bodies(module); |
| }); |
| }, |
| { |
| sess.time("unused_lib_feature_checking", || { |
| rustc_passes::stability::check_unused_or_stable_features(tcx) |
| }); |
| }, |
| { |
| // We force these queries to run, |
| // since they might not otherwise get called. |
| // This marks the corresponding crate-level attributes |
| // as used, and ensures that their values are valid. |
| tcx.ensure().limits(()); |
| tcx.ensure().stability_index(()); |
| } |
| ); |
| }); |
| |
| // passes are timed inside typeck |
| rustc_hir_analysis::check_crate(tcx)?; |
| |
| sess.time("misc_checking_2", || { |
| parallel!( |
| { |
| sess.time("match_checking", || { |
| tcx.hir().par_body_owners(|def_id| tcx.ensure().check_match(def_id.to_def_id())) |
| }); |
| }, |
| { |
| sess.time("liveness_checking", || { |
| tcx.hir().par_body_owners(|def_id| { |
| // this must run before MIR dump, because |
| // "not all control paths return a value" is reported here. |
| // |
| // maybe move the check to a MIR pass? |
| tcx.ensure().check_liveness(def_id.to_def_id()); |
| }); |
| }); |
| } |
| ); |
| }); |
| |
| sess.time("MIR_borrow_checking", || { |
| tcx.hir().par_body_owners(|def_id| tcx.ensure().mir_borrowck(def_id)); |
| }); |
| |
| sess.time("MIR_effect_checking", || { |
| for def_id in tcx.hir().body_owners() { |
| tcx.ensure().thir_check_unsafety(def_id); |
| if !tcx.sess.opts.unstable_opts.thir_unsafeck { |
| rustc_mir_transform::check_unsafety::check_unsafety(tcx, def_id); |
| } |
| tcx.ensure().has_ffi_unwind_calls(def_id); |
| |
| if tcx.hir().body_const_context(def_id).is_some() { |
| tcx.ensure() |
| .mir_drops_elaborated_and_const_checked(ty::WithOptConstParam::unknown(def_id)); |
| } |
| } |
| }); |
| |
| if tcx.sess.opts.unstable_opts.drop_tracking_mir { |
| tcx.hir().par_body_owners(|def_id| { |
| if let rustc_hir::def::DefKind::Generator = tcx.def_kind(def_id) { |
| tcx.ensure().mir_generator_witnesses(def_id); |
| tcx.ensure().check_generator_obligations(def_id); |
| } |
| }); |
| } |
| |
| sess.time("layout_testing", || layout_test::test_layout(tcx)); |
| |
| // Avoid overwhelming user with errors if borrow checking failed. |
| // I'm not sure how helpful this is, to be honest, but it avoids a |
| // lot of annoying errors in the ui tests (basically, |
| // lint warnings and so on -- kindck used to do this abort, but |
| // kindck is gone now). -nmatsakis |
| if let Some(reported) = sess.has_errors() { |
| return Err(reported); |
| } |
| |
| sess.time("misc_checking_3", || { |
| parallel!( |
| { |
| tcx.ensure().effective_visibilities(()); |
| |
| parallel!( |
| { |
| tcx.ensure().check_private_in_public(()); |
| }, |
| { |
| tcx.hir() |
| .par_for_each_module(|module| tcx.ensure().check_mod_deathness(module)); |
| }, |
| { |
| sess.time("lint_checking", || { |
| rustc_lint::check_crate(tcx, || { |
| rustc_lint::BuiltinCombinedLateLintPass::new() |
| }); |
| }); |
| } |
| ); |
| }, |
| { |
| sess.time("privacy_checking_modules", || { |
| tcx.hir().par_for_each_module(|module| { |
| tcx.ensure().check_mod_privacy(module); |
| }); |
| }); |
| } |
| ); |
| |
| // This check has to be run after all lints are done processing. We don't |
| // define a lint filter, as all lint checks should have finished at this point. |
| sess.time("check_lint_expectations", || tcx.check_expectations(None)); |
| }); |
| |
| Ok(()) |
| } |
| |
| /// Runs the codegen backend, after which the AST and analysis can |
| /// be discarded. |
| pub fn start_codegen<'tcx>( |
| codegen_backend: &dyn CodegenBackend, |
| tcx: TyCtxt<'tcx>, |
| ) -> Box<dyn Any> { |
| info!("Pre-codegen\n{:?}", tcx.debug_stats()); |
| |
| let (metadata, need_metadata_module) = rustc_metadata::fs::encode_and_write_metadata(tcx); |
| |
| let codegen = tcx.sess.time("codegen_crate", move || { |
| codegen_backend.codegen_crate(tcx, metadata, need_metadata_module) |
| }); |
| |
| // Don't run these test assertions when not doing codegen. Compiletest tries to build |
| // build-fail tests in check mode first and expects it to not give an error in that case. |
| if tcx.sess.opts.output_types.should_codegen() { |
| rustc_incremental::assert_module_sources::assert_module_sources(tcx); |
| rustc_symbol_mangling::test::report_symbol_names(tcx); |
| } |
| |
| info!("Post-codegen\n{:?}", tcx.debug_stats()); |
| |
| if tcx.sess.opts.output_types.contains_key(&OutputType::Mir) { |
| if let Err(error) = rustc_mir_transform::dump_mir::emit_mir(tcx) { |
| tcx.sess.emit_err(errors::CantEmitMIR { error }); |
| tcx.sess.abort_if_errors(); |
| } |
| } |
| |
| codegen |
| } |
| |
| fn get_recursion_limit(krate_attrs: &[ast::Attribute], sess: &Session) -> Limit { |
| if let Some(attr) = krate_attrs |
| .iter() |
| .find(|attr| attr.has_name(sym::recursion_limit) && attr.value_str().is_none()) |
| { |
| // This is here mainly to check for using a macro, such as |
| // #![recursion_limit = foo!()]. That is not supported since that |
| // would require expanding this while in the middle of expansion, |
| // which needs to know the limit before expanding. Otherwise, |
| // validation would normally be caught in AstValidator (via |
| // `check_builtin_attribute`), but by the time that runs the macro |
| // is expanded, and it doesn't give an error. |
| validate_attr::emit_fatal_malformed_builtin_attribute( |
| &sess.parse_sess, |
| attr, |
| sym::recursion_limit, |
| ); |
| } |
| rustc_middle::middle::limits::get_recursion_limit(krate_attrs, sess) |
| } |