1118 lines
45 KiB
Rust
1118 lines
45 KiB
Rust
// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use rustc::front;
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use rustc::front::map as hir_map;
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use rustc_mir as mir;
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use rustc_mir::mir_map::MirMap;
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use rustc::session::Session;
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use rustc::session::config::{self, Input, OutputFilenames, OutputType};
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use rustc::session::search_paths::PathKind;
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use rustc::lint;
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use rustc::middle::{stability, ty, reachable};
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use rustc::middle::dependency_format;
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use rustc::middle;
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use rustc::util::nodemap::NodeMap;
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use rustc::util::common::time;
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use rustc_borrowck as borrowck;
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use rustc_resolve as resolve;
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use rustc_metadata::macro_import;
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use rustc_metadata::creader::LocalCrateReader;
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use rustc_metadata::cstore::CStore;
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use rustc_trans::back::link;
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use rustc_trans::back::write;
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use rustc_trans::trans;
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use rustc_typeck as typeck;
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use rustc_privacy;
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use rustc_plugin::registry::Registry;
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use rustc_plugin as plugin;
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use rustc_front::hir;
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use rustc_front::lowering::{lower_crate, LoweringContext};
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use super::Compilation;
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use serialize::json;
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use std::collections::HashMap;
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use std::env;
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use std::ffi::{OsString, OsStr};
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use std::fs;
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use std::io::{self, Write};
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use std::path::{Path, PathBuf};
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use syntax::ast::{self, NodeIdAssigner};
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use syntax::attr;
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use syntax::attr::AttrMetaMethods;
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use syntax::diagnostics;
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use syntax::feature_gate::UnstableFeatures;
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use syntax::fold::Folder;
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use syntax::parse;
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use syntax::parse::token;
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use syntax::util::node_count::NodeCounter;
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use syntax::visit;
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use syntax;
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pub fn compile_input(sess: Session,
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cstore: &CStore,
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cfg: ast::CrateConfig,
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input: &Input,
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outdir: &Option<PathBuf>,
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output: &Option<PathBuf>,
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addl_plugins: Option<Vec<String>>,
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control: CompileController) {
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macro_rules! controller_entry_point{($point: ident, $tsess: expr, $make_state: expr) => ({
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let state = $make_state;
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(control.$point.callback)(state);
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$tsess.abort_if_errors();
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if control.$point.stop == Compilation::Stop {
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return;
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}
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})}
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// We need nested scopes here, because the intermediate results can keep
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// large chunks of memory alive and we want to free them as soon as
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// possible to keep the peak memory usage low
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let result = {
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let (outputs, expanded_crate, id) = {
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let krate = phase_1_parse_input(&sess, cfg, input);
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controller_entry_point!(after_parse,
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sess,
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CompileState::state_after_parse(input, &sess, outdir, &krate));
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let outputs = build_output_filenames(input, outdir, output, &krate.attrs, &sess);
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let id = link::find_crate_name(Some(&sess), &krate.attrs, input);
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let expanded_crate = match phase_2_configure_and_expand(&sess,
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&cstore,
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krate,
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&id[..],
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addl_plugins) {
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None => return,
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Some(k) => k,
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};
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(outputs, expanded_crate, id)
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};
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controller_entry_point!(after_expand,
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sess,
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CompileState::state_after_expand(input,
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&sess,
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outdir,
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&expanded_crate,
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&id[..]));
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let expanded_crate = assign_node_ids(&sess, expanded_crate);
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// Lower ast -> hir.
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let lcx = LoweringContext::new(&sess, Some(&expanded_crate));
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let mut hir_forest = time(sess.time_passes(),
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"lowering ast -> hir",
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|| hir_map::Forest::new(lower_crate(&lcx, &expanded_crate)));
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let arenas = ty::CtxtArenas::new();
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let ast_map = make_map(&sess, &mut hir_forest);
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write_out_deps(&sess, &outputs, &id);
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controller_entry_point!(after_write_deps,
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sess,
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CompileState::state_after_write_deps(input,
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&sess,
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outdir,
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&ast_map,
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&expanded_crate,
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&ast_map.krate(),
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&id[..],
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&lcx));
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time(sess.time_passes(), "attribute checking", || {
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front::check_attr::check_crate(&sess, &expanded_crate);
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});
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time(sess.time_passes(),
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"early lint checks",
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|| lint::check_ast_crate(&sess, &expanded_crate));
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phase_3_run_analysis_passes(&sess,
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&cstore,
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ast_map,
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&arenas,
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&id,
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control.make_glob_map,
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|tcx, mir_map, analysis| {
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{
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let state =
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CompileState::state_after_analysis(input,
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&tcx.sess,
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outdir,
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&expanded_crate,
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tcx.map.krate(),
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&analysis,
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&mir_map,
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tcx,
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&lcx,
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&id);
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(control.after_analysis.callback)(state);
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tcx.sess.abort_if_errors();
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if control.after_analysis.stop == Compilation::Stop {
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return Err(());
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}
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}
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if log_enabled!(::log::INFO) {
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println!("Pre-trans");
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tcx.print_debug_stats();
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}
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let trans = phase_4_translate_to_llvm(tcx,
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mir_map,
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analysis);
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if log_enabled!(::log::INFO) {
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println!("Post-trans");
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tcx.print_debug_stats();
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}
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// Discard interned strings as they are no longer required.
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token::get_ident_interner().clear();
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Ok((outputs, trans))
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})
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};
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let (outputs, trans) = if let Ok(out) = result {
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out
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} else {
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return;
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};
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phase_5_run_llvm_passes(&sess, &trans, &outputs);
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controller_entry_point!(after_llvm,
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sess,
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CompileState::state_after_llvm(input, &sess, outdir, &trans));
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phase_6_link_output(&sess, &trans, &outputs);
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}
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/// The name used for source code that doesn't originate in a file
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/// (e.g. source from stdin or a string)
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pub fn anon_src() -> String {
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"<anon>".to_string()
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}
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pub fn source_name(input: &Input) -> String {
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match *input {
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// FIXME (#9639): This needs to handle non-utf8 paths
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Input::File(ref ifile) => ifile.to_str().unwrap().to_string(),
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Input::Str(_) => anon_src(),
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}
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}
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/// CompileController is used to customise compilation, it allows compilation to
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/// be stopped and/or to call arbitrary code at various points in compilation.
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/// It also allows for various flags to be set to influence what information gets
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/// collected during compilation.
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///
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/// This is a somewhat higher level controller than a Session - the Session
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/// controls what happens in each phase, whereas the CompileController controls
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/// whether a phase is run at all and whether other code (from outside the
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/// the compiler) is run between phases.
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///
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/// Note that if compilation is set to stop and a callback is provided for a
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/// given entry point, the callback is called before compilation is stopped.
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///
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/// Expect more entry points to be added in the future.
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pub struct CompileController<'a> {
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pub after_parse: PhaseController<'a>,
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pub after_expand: PhaseController<'a>,
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pub after_write_deps: PhaseController<'a>,
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pub after_analysis: PhaseController<'a>,
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pub after_llvm: PhaseController<'a>,
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pub make_glob_map: resolve::MakeGlobMap,
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}
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impl<'a> CompileController<'a> {
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pub fn basic() -> CompileController<'a> {
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CompileController {
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after_parse: PhaseController::basic(),
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after_expand: PhaseController::basic(),
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after_write_deps: PhaseController::basic(),
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after_analysis: PhaseController::basic(),
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after_llvm: PhaseController::basic(),
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make_glob_map: resolve::MakeGlobMap::No,
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}
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}
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}
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pub struct PhaseController<'a> {
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pub stop: Compilation,
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pub callback: Box<Fn(CompileState) -> () + 'a>,
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}
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impl<'a> PhaseController<'a> {
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pub fn basic() -> PhaseController<'a> {
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PhaseController {
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stop: Compilation::Continue,
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callback: box |_| {},
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}
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}
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}
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/// State that is passed to a callback. What state is available depends on when
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/// during compilation the callback is made. See the various constructor methods
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/// (`state_*`) in the impl to see which data is provided for any given entry point.
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pub struct CompileState<'a, 'ast: 'a, 'tcx: 'a> {
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pub input: &'a Input,
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pub session: &'a Session,
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pub cfg: Option<&'a ast::CrateConfig>,
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pub krate: Option<&'a ast::Crate>,
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pub crate_name: Option<&'a str>,
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pub output_filenames: Option<&'a OutputFilenames>,
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pub out_dir: Option<&'a Path>,
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pub expanded_crate: Option<&'a ast::Crate>,
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pub hir_crate: Option<&'a hir::Crate>,
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pub ast_map: Option<&'a hir_map::Map<'ast>>,
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pub mir_map: Option<&'a MirMap<'tcx>>,
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pub analysis: Option<&'a ty::CrateAnalysis<'a>>,
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pub tcx: Option<&'a ty::ctxt<'tcx>>,
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pub lcx: Option<&'a LoweringContext<'a>>,
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pub trans: Option<&'a trans::CrateTranslation>,
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}
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impl<'a, 'ast, 'tcx> CompileState<'a, 'ast, 'tcx> {
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fn empty(input: &'a Input,
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session: &'a Session,
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out_dir: &'a Option<PathBuf>)
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-> CompileState<'a, 'ast, 'tcx> {
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CompileState {
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input: input,
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session: session,
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out_dir: out_dir.as_ref().map(|s| &**s),
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cfg: None,
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krate: None,
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crate_name: None,
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output_filenames: None,
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expanded_crate: None,
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hir_crate: None,
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ast_map: None,
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analysis: None,
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mir_map: None,
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tcx: None,
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lcx: None,
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trans: None,
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}
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}
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fn state_after_parse(input: &'a Input,
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session: &'a Session,
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out_dir: &'a Option<PathBuf>,
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krate: &'a ast::Crate)
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-> CompileState<'a, 'ast, 'tcx> {
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CompileState { krate: Some(krate), ..CompileState::empty(input, session, out_dir) }
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}
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fn state_after_expand(input: &'a Input,
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session: &'a Session,
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out_dir: &'a Option<PathBuf>,
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expanded_crate: &'a ast::Crate,
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crate_name: &'a str)
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-> CompileState<'a, 'ast, 'tcx> {
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CompileState {
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crate_name: Some(crate_name),
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expanded_crate: Some(expanded_crate),
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..CompileState::empty(input, session, out_dir)
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}
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}
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fn state_after_write_deps(input: &'a Input,
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session: &'a Session,
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out_dir: &'a Option<PathBuf>,
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ast_map: &'a hir_map::Map<'ast>,
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krate: &'a ast::Crate,
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hir_crate: &'a hir::Crate,
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crate_name: &'a str,
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lcx: &'a LoweringContext<'a>)
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-> CompileState<'a, 'ast, 'tcx> {
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CompileState {
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crate_name: Some(crate_name),
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ast_map: Some(ast_map),
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krate: Some(krate),
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hir_crate: Some(hir_crate),
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lcx: Some(lcx),
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..CompileState::empty(input, session, out_dir)
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}
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}
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fn state_after_analysis(input: &'a Input,
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session: &'a Session,
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out_dir: &'a Option<PathBuf>,
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krate: &'a ast::Crate,
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hir_crate: &'a hir::Crate,
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analysis: &'a ty::CrateAnalysis,
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mir_map: &'a MirMap<'tcx>,
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tcx: &'a ty::ctxt<'tcx>,
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lcx: &'a LoweringContext<'a>,
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crate_name: &'a str)
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-> CompileState<'a, 'ast, 'tcx> {
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CompileState {
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analysis: Some(analysis),
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mir_map: Some(mir_map),
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tcx: Some(tcx),
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krate: Some(krate),
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hir_crate: Some(hir_crate),
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lcx: Some(lcx),
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crate_name: Some(crate_name),
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..CompileState::empty(input, session, out_dir)
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}
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}
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fn state_after_llvm(input: &'a Input,
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session: &'a Session,
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out_dir: &'a Option<PathBuf>,
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trans: &'a trans::CrateTranslation)
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-> CompileState<'a, 'ast, 'tcx> {
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CompileState { trans: Some(trans), ..CompileState::empty(input, session, out_dir) }
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}
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}
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pub fn phase_1_parse_input(sess: &Session, cfg: ast::CrateConfig, input: &Input) -> ast::Crate {
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// These may be left in an incoherent state after a previous compile.
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// `clear_tables` and `get_ident_interner().clear()` can be used to free
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// memory, but they do not restore the initial state.
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syntax::ext::mtwt::reset_tables();
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token::reset_ident_interner();
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let krate = time(sess.time_passes(), "parsing", || {
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match *input {
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Input::File(ref file) => {
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parse::parse_crate_from_file(&(*file), cfg.clone(), &sess.parse_sess)
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}
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Input::Str(ref src) => {
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parse::parse_crate_from_source_str(anon_src().to_string(),
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src.to_string(),
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cfg.clone(),
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&sess.parse_sess)
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}
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}
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});
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if sess.opts.debugging_opts.ast_json_noexpand {
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println!("{}", json::as_json(&krate));
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}
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if sess.opts.debugging_opts.input_stats {
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println!("Lines of code: {}", sess.codemap().count_lines());
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println!("Pre-expansion node count: {}", count_nodes(&krate));
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}
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if let Some(ref s) = sess.opts.show_span {
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syntax::show_span::run(sess.diagnostic(), s, &krate);
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}
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krate
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}
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fn count_nodes(krate: &ast::Crate) -> usize {
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let mut counter = NodeCounter::new();
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visit::walk_crate(&mut counter, krate);
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counter.count
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}
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// For continuing compilation after a parsed crate has been
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// modified
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/// Run the "early phases" of the compiler: initial `cfg` processing,
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/// loading compiler plugins (including those from `addl_plugins`),
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/// syntax expansion, secondary `cfg` expansion, synthesis of a test
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/// harness if one is to be provided and injection of a dependency on the
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/// standard library and prelude.
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///
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/// Returns `None` if we're aborting after handling -W help.
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pub fn phase_2_configure_and_expand(sess: &Session,
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cstore: &CStore,
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mut krate: ast::Crate,
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crate_name: &str,
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addl_plugins: Option<Vec<String>>)
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-> Option<ast::Crate> {
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let time_passes = sess.time_passes();
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// strip before anything else because crate metadata may use #[cfg_attr]
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// and so macros can depend on configuration variables, such as
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//
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// #[macro_use] #[cfg(foo)]
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// mod bar { macro_rules! baz!(() => {{}}) }
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//
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// baz! should not use this definition unless foo is enabled.
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let mut feature_gated_cfgs = vec![];
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krate = time(time_passes, "configuration 1", || {
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syntax::config::strip_unconfigured_items(sess.diagnostic(), krate, &mut feature_gated_cfgs)
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});
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*sess.crate_types.borrow_mut() = collect_crate_types(sess, &krate.attrs);
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*sess.crate_metadata.borrow_mut() = collect_crate_metadata(sess, &krate.attrs);
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time(time_passes, "recursion limit", || {
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middle::recursion_limit::update_recursion_limit(sess, &krate);
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});
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time(time_passes, "gated macro checking", || {
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let features = syntax::feature_gate::check_crate_macros(sess.codemap(),
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&sess.parse_sess.span_diagnostic,
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&krate);
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// these need to be set "early" so that expansion sees `quote` if enabled.
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*sess.features.borrow_mut() = features;
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sess.abort_if_errors();
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});
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krate = time(time_passes, "crate injection", || {
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syntax::std_inject::maybe_inject_crates_ref(krate, sess.opts.alt_std_name.clone())
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});
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let macros = time(time_passes,
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"macro loading",
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|| macro_import::read_macro_defs(sess, &cstore, &krate));
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let mut addl_plugins = Some(addl_plugins);
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let registrars = time(time_passes, "plugin loading", || {
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plugin::load::load_plugins(sess, &cstore, &krate, addl_plugins.take().unwrap())
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});
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let mut registry = Registry::new(sess, &krate);
|
|
|
|
time(time_passes, "plugin registration", || {
|
|
if sess.features.borrow().rustc_diagnostic_macros {
|
|
registry.register_macro("__diagnostic_used",
|
|
diagnostics::plugin::expand_diagnostic_used);
|
|
registry.register_macro("__register_diagnostic",
|
|
diagnostics::plugin::expand_register_diagnostic);
|
|
registry.register_macro("__build_diagnostic_array",
|
|
diagnostics::plugin::expand_build_diagnostic_array);
|
|
}
|
|
|
|
for registrar in registrars {
|
|
registry.args_hidden = Some(registrar.args);
|
|
(registrar.fun)(&mut registry);
|
|
}
|
|
});
|
|
|
|
let Registry { syntax_exts, early_lint_passes, late_lint_passes, lint_groups,
|
|
llvm_passes, attributes, .. } = registry;
|
|
|
|
{
|
|
let mut ls = sess.lint_store.borrow_mut();
|
|
for pass in early_lint_passes {
|
|
ls.register_early_pass(Some(sess), true, pass);
|
|
}
|
|
for pass in late_lint_passes {
|
|
ls.register_late_pass(Some(sess), true, pass);
|
|
}
|
|
|
|
for (name, to) in lint_groups {
|
|
ls.register_group(Some(sess), true, name, to);
|
|
}
|
|
|
|
*sess.plugin_llvm_passes.borrow_mut() = llvm_passes;
|
|
*sess.plugin_attributes.borrow_mut() = attributes.clone();
|
|
}
|
|
|
|
// Lint plugins are registered; now we can process command line flags.
|
|
if sess.opts.describe_lints {
|
|
super::describe_lints(&*sess.lint_store.borrow(), true);
|
|
return None;
|
|
}
|
|
sess.lint_store.borrow_mut().process_command_line(sess);
|
|
|
|
// Abort if there are errors from lint processing or a plugin registrar.
|
|
sess.abort_if_errors();
|
|
|
|
krate = time(time_passes, "expansion", || {
|
|
// 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.
|
|
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)
|
|
.get_dylib_search_paths();
|
|
new_path.extend(env::split_paths(&_old_path));
|
|
env::set_var("PATH", &env::join_paths(new_path).unwrap());
|
|
}
|
|
let features = sess.features.borrow();
|
|
let cfg = syntax::ext::expand::ExpansionConfig {
|
|
crate_name: crate_name.to_string(),
|
|
features: Some(&features),
|
|
recursion_limit: sess.recursion_limit.get(),
|
|
trace_mac: sess.opts.debugging_opts.trace_macros,
|
|
};
|
|
let (ret, macro_names) = syntax::ext::expand::expand_crate(&sess.parse_sess,
|
|
cfg,
|
|
macros,
|
|
syntax_exts,
|
|
&mut feature_gated_cfgs,
|
|
krate);
|
|
if cfg!(windows) {
|
|
env::set_var("PATH", &_old_path);
|
|
}
|
|
*sess.available_macros.borrow_mut() = macro_names;
|
|
ret
|
|
});
|
|
|
|
// Needs to go *after* expansion to be able to check the results
|
|
// of macro expansion. This runs before #[cfg] to try to catch as
|
|
// much as possible (e.g. help the programmer avoid platform
|
|
// specific differences)
|
|
time(time_passes, "complete gated feature checking 1", || {
|
|
let features = syntax::feature_gate::check_crate(sess.codemap(),
|
|
&sess.parse_sess.span_diagnostic,
|
|
&krate,
|
|
&attributes,
|
|
sess.opts.unstable_features);
|
|
*sess.features.borrow_mut() = features;
|
|
sess.abort_if_errors();
|
|
});
|
|
|
|
// JBC: make CFG processing part of expansion to avoid this problem:
|
|
|
|
// strip again, in case expansion added anything with a #[cfg].
|
|
krate = time(time_passes, "configuration 2", || {
|
|
syntax::config::strip_unconfigured_items(sess.diagnostic(), krate, &mut feature_gated_cfgs)
|
|
});
|
|
|
|
time(time_passes, "gated configuration checking", || {
|
|
let features = sess.features.borrow();
|
|
feature_gated_cfgs.sort();
|
|
feature_gated_cfgs.dedup();
|
|
for cfg in &feature_gated_cfgs {
|
|
cfg.check_and_emit(sess.diagnostic(), &features);
|
|
}
|
|
});
|
|
|
|
krate = time(time_passes, "maybe building test harness", || {
|
|
syntax::test::modify_for_testing(&sess.parse_sess, &sess.opts.cfg, krate, sess.diagnostic())
|
|
});
|
|
|
|
krate = time(time_passes,
|
|
"prelude injection",
|
|
|| syntax::std_inject::maybe_inject_prelude(&sess.parse_sess, krate));
|
|
|
|
time(time_passes,
|
|
"checking that all macro invocations are gone",
|
|
|| syntax::ext::expand::check_for_macros(&sess.parse_sess, &krate));
|
|
|
|
time(time_passes,
|
|
"checking for inline asm in case the target doesn't support it",
|
|
|| middle::check_no_asm::check_crate(sess, &krate));
|
|
|
|
// One final feature gating of the true AST that gets compiled
|
|
// later, to make sure we've got everything (e.g. configuration
|
|
// can insert new attributes via `cfg_attr`)
|
|
time(time_passes, "complete gated feature checking 2", || {
|
|
let features = syntax::feature_gate::check_crate(sess.codemap(),
|
|
&sess.parse_sess.span_diagnostic,
|
|
&krate,
|
|
&attributes,
|
|
sess.opts.unstable_features);
|
|
*sess.features.borrow_mut() = features;
|
|
sess.abort_if_errors();
|
|
});
|
|
|
|
if sess.opts.debugging_opts.input_stats {
|
|
println!("Post-expansion node count: {}", count_nodes(&krate));
|
|
}
|
|
|
|
Some(krate)
|
|
}
|
|
|
|
pub fn assign_node_ids(sess: &Session, krate: ast::Crate) -> ast::Crate {
|
|
struct NodeIdAssigner<'a> {
|
|
sess: &'a Session,
|
|
}
|
|
|
|
impl<'a> Folder for NodeIdAssigner<'a> {
|
|
fn new_id(&mut self, old_id: ast::NodeId) -> ast::NodeId {
|
|
assert_eq!(old_id, ast::DUMMY_NODE_ID);
|
|
self.sess.next_node_id()
|
|
}
|
|
}
|
|
|
|
let krate = time(sess.time_passes(),
|
|
"assigning node ids",
|
|
|| NodeIdAssigner { sess: sess }.fold_crate(krate));
|
|
|
|
if sess.opts.debugging_opts.ast_json {
|
|
println!("{}", json::as_json(&krate));
|
|
}
|
|
|
|
krate
|
|
}
|
|
|
|
pub fn make_map<'ast>(sess: &Session,
|
|
forest: &'ast mut front::map::Forest)
|
|
-> front::map::Map<'ast> {
|
|
// Construct the 'ast'-map
|
|
let map = time(sess.time_passes(),
|
|
"indexing hir",
|
|
move || front::map::map_crate(forest));
|
|
|
|
map
|
|
}
|
|
|
|
/// Run the resolution, typechecking, region checking and other
|
|
/// miscellaneous analysis passes on the crate. Return various
|
|
/// structures carrying the results of the analysis.
|
|
pub fn phase_3_run_analysis_passes<'tcx, F, R>(sess: &'tcx Session,
|
|
cstore: &CStore,
|
|
ast_map: front::map::Map<'tcx>,
|
|
arenas: &'tcx ty::CtxtArenas<'tcx>,
|
|
name: &str,
|
|
make_glob_map: resolve::MakeGlobMap,
|
|
f: F)
|
|
-> R
|
|
where F: for<'a> FnOnce(&'a ty::ctxt<'tcx>, MirMap<'tcx>, ty::CrateAnalysis) -> R
|
|
{
|
|
let time_passes = sess.time_passes();
|
|
let krate = ast_map.krate();
|
|
|
|
time(time_passes,
|
|
"external crate/lib resolution",
|
|
|| LocalCrateReader::new(sess, cstore, &ast_map).read_crates(krate));
|
|
|
|
let lang_items = time(time_passes,
|
|
"language item collection",
|
|
|| middle::lang_items::collect_language_items(&sess, &ast_map));
|
|
|
|
let resolve::CrateMap {
|
|
def_map,
|
|
freevars,
|
|
export_map,
|
|
trait_map,
|
|
external_exports,
|
|
glob_map,
|
|
} = time(time_passes,
|
|
"resolution",
|
|
|| resolve::resolve_crate(sess, &ast_map, make_glob_map));
|
|
|
|
// Discard MTWT tables that aren't required past resolution.
|
|
// FIXME: get rid of uses of MTWT tables in typeck, mir and trans and clear them
|
|
if !sess.opts.debugging_opts.keep_mtwt_tables {
|
|
// syntax::ext::mtwt::clear_tables();
|
|
}
|
|
|
|
let named_region_map = time(time_passes,
|
|
"lifetime resolution",
|
|
|| middle::resolve_lifetime::krate(sess, krate, &def_map.borrow()));
|
|
|
|
time(time_passes,
|
|
"looking for entry point",
|
|
|| middle::entry::find_entry_point(sess, &ast_map));
|
|
|
|
sess.plugin_registrar_fn.set(time(time_passes, "looking for plugin registrar", || {
|
|
plugin::build::find_plugin_registrar(sess.diagnostic(), krate)
|
|
}));
|
|
|
|
let region_map = time(time_passes,
|
|
"region resolution",
|
|
|| middle::region::resolve_crate(sess, krate));
|
|
|
|
time(time_passes,
|
|
"loop checking",
|
|
|| middle::check_loop::check_crate(sess, krate));
|
|
|
|
time(time_passes,
|
|
"static item recursion checking",
|
|
|| middle::check_static_recursion::check_crate(sess, krate, &def_map.borrow(), &ast_map));
|
|
|
|
ty::ctxt::create_and_enter(sess,
|
|
arenas,
|
|
def_map,
|
|
named_region_map,
|
|
ast_map,
|
|
freevars,
|
|
region_map,
|
|
lang_items,
|
|
stability::Index::new(krate),
|
|
|tcx| {
|
|
// passes are timed inside typeck
|
|
typeck::check_crate(tcx, trait_map);
|
|
|
|
time(time_passes,
|
|
"const checking",
|
|
|| middle::check_const::check_crate(tcx));
|
|
|
|
let access_levels =
|
|
time(time_passes, "privacy checking", || {
|
|
rustc_privacy::check_crate(tcx,
|
|
&export_map,
|
|
external_exports)
|
|
});
|
|
|
|
// Do not move this check past lint
|
|
time(time_passes, "stability index", || {
|
|
tcx.stability.borrow_mut().build(tcx, krate, &access_levels)
|
|
});
|
|
|
|
time(time_passes,
|
|
"intrinsic checking",
|
|
|| middle::intrinsicck::check_crate(tcx));
|
|
|
|
time(time_passes,
|
|
"effect checking",
|
|
|| middle::effect::check_crate(tcx));
|
|
|
|
time(time_passes,
|
|
"match checking",
|
|
|| middle::check_match::check_crate(tcx));
|
|
|
|
let mir_map = match tcx.sess.opts.unstable_features {
|
|
UnstableFeatures::Disallow => {
|
|
// use this as a shorthand for beta/stable, and skip
|
|
// MIR construction there until known regressions are
|
|
// addressed
|
|
NodeMap()
|
|
}
|
|
UnstableFeatures::Allow | UnstableFeatures::Cheat => {
|
|
time(time_passes,
|
|
"MIR dump",
|
|
|| mir::mir_map::build_mir_for_crate(tcx))
|
|
}
|
|
};
|
|
|
|
time(time_passes,
|
|
"liveness checking",
|
|
|| middle::liveness::check_crate(tcx));
|
|
|
|
time(time_passes,
|
|
"borrow checking",
|
|
|| borrowck::check_crate(tcx));
|
|
|
|
time(time_passes,
|
|
"rvalue checking",
|
|
|| middle::check_rvalues::check_crate(tcx, krate));
|
|
|
|
// Avoid overwhelming user with errors if type checking failed.
|
|
// I'm not sure how helpful this is, to be honest, but it avoids
|
|
// a
|
|
// lot of annoying errors in the compile-fail tests (basically,
|
|
// lint warnings and so on -- kindck used to do this abort, but
|
|
// kindck is gone now). -nmatsakis
|
|
tcx.sess.abort_if_errors();
|
|
|
|
let reachable_map =
|
|
time(time_passes,
|
|
"reachability checking",
|
|
|| reachable::find_reachable(tcx, &access_levels));
|
|
|
|
time(time_passes, "death checking", || {
|
|
middle::dead::check_crate(tcx, &access_levels);
|
|
});
|
|
|
|
let ref lib_features_used =
|
|
time(time_passes,
|
|
"stability checking",
|
|
|| stability::check_unstable_api_usage(tcx));
|
|
|
|
time(time_passes, "unused lib feature checking", || {
|
|
stability::check_unused_or_stable_features(&tcx.sess,
|
|
lib_features_used)
|
|
});
|
|
|
|
time(time_passes,
|
|
"lint checking",
|
|
|| lint::check_crate(tcx, &access_levels));
|
|
|
|
// The above three passes generate errors w/o aborting
|
|
tcx.sess.abort_if_errors();
|
|
|
|
f(tcx,
|
|
mir_map,
|
|
ty::CrateAnalysis {
|
|
export_map: export_map,
|
|
access_levels: access_levels,
|
|
reachable: reachable_map,
|
|
name: name,
|
|
glob_map: glob_map,
|
|
})
|
|
})
|
|
}
|
|
|
|
/// Run the translation phase to LLVM, after which the AST and analysis can
|
|
/// be discarded.
|
|
pub fn phase_4_translate_to_llvm<'tcx>(tcx: &ty::ctxt<'tcx>,
|
|
mut mir_map: MirMap<'tcx>,
|
|
analysis: ty::CrateAnalysis)
|
|
-> trans::CrateTranslation {
|
|
let time_passes = tcx.sess.time_passes();
|
|
|
|
time(time_passes,
|
|
"resolving dependency formats",
|
|
|| dependency_format::calculate(&tcx.sess));
|
|
|
|
time(time_passes,
|
|
"erasing regions from MIR",
|
|
|| mir::transform::erase_regions::erase_regions(tcx, &mut mir_map));
|
|
|
|
// Option dance to work around the lack of stack once closures.
|
|
time(time_passes,
|
|
"translation",
|
|
move || trans::trans_crate(tcx, &mir_map, analysis))
|
|
}
|
|
|
|
/// Run LLVM itself, producing a bitcode file, assembly file or object file
|
|
/// as a side effect.
|
|
pub fn phase_5_run_llvm_passes(sess: &Session,
|
|
trans: &trans::CrateTranslation,
|
|
outputs: &OutputFilenames) {
|
|
if sess.opts.cg.no_integrated_as {
|
|
let mut map = HashMap::new();
|
|
map.insert(OutputType::Assembly, None);
|
|
time(sess.time_passes(),
|
|
"LLVM passes",
|
|
|| write::run_passes(sess, trans, &map, outputs));
|
|
|
|
write::run_assembler(sess, outputs);
|
|
|
|
// Remove assembly source, unless --save-temps was specified
|
|
if !sess.opts.cg.save_temps {
|
|
fs::remove_file(&outputs.temp_path(OutputType::Assembly)).unwrap();
|
|
}
|
|
} else {
|
|
time(sess.time_passes(),
|
|
"LLVM passes",
|
|
|| write::run_passes(sess, trans, &sess.opts.output_types, outputs));
|
|
}
|
|
|
|
sess.abort_if_errors();
|
|
}
|
|
|
|
/// Run the linker on any artifacts that resulted from the LLVM run.
|
|
/// This should produce either a finished executable or library.
|
|
pub fn phase_6_link_output(sess: &Session,
|
|
trans: &trans::CrateTranslation,
|
|
outputs: &OutputFilenames) {
|
|
time(sess.time_passes(),
|
|
"linking",
|
|
|| link::link_binary(sess, trans, outputs, &trans.link.crate_name));
|
|
}
|
|
|
|
fn escape_dep_filename(filename: &str) -> String {
|
|
// Apparently clang and gcc *only* escape spaces:
|
|
// http://llvm.org/klaus/clang/commit/9d50634cfc268ecc9a7250226dd5ca0e945240d4
|
|
filename.replace(" ", "\\ ")
|
|
}
|
|
|
|
fn write_out_deps(sess: &Session, outputs: &OutputFilenames, id: &str) {
|
|
let mut out_filenames = Vec::new();
|
|
for output_type in sess.opts.output_types.keys() {
|
|
let file = outputs.path(*output_type);
|
|
match *output_type {
|
|
OutputType::Exe => {
|
|
for output in sess.crate_types.borrow().iter() {
|
|
let p = link::filename_for_input(sess, *output, id, outputs);
|
|
out_filenames.push(p);
|
|
}
|
|
}
|
|
_ => {
|
|
out_filenames.push(file);
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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<()> {
|
|
// Build a list of files used to compile the output and
|
|
// write Makefile-compatible dependency rules
|
|
let files: Vec<String> = sess.codemap()
|
|
.files
|
|
.borrow()
|
|
.iter()
|
|
.filter(|fmap| fmap.is_real_file())
|
|
.filter(|fmap| !fmap.is_imported())
|
|
.map(|fmap| escape_dep_filename(&fmap.name))
|
|
.collect();
|
|
let mut file = try!(fs::File::create(&deps_filename));
|
|
for path in &out_filenames {
|
|
try!(write!(file, "{}: {}\n\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 {
|
|
try!(writeln!(file, "{}:", path));
|
|
}
|
|
Ok(())
|
|
})();
|
|
|
|
match result {
|
|
Ok(()) => {}
|
|
Err(e) => {
|
|
sess.fatal(&format!("error writing dependencies to `{}`: {}",
|
|
deps_filename.display(),
|
|
e));
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn collect_crate_types(session: &Session, attrs: &[ast::Attribute]) -> Vec<config::CrateType> {
|
|
// Unconditionally collect crate types from attributes to make them used
|
|
let attr_types: Vec<config::CrateType> =
|
|
attrs.iter()
|
|
.filter_map(|a| {
|
|
if a.check_name("crate_type") {
|
|
match a.value_str() {
|
|
Some(ref n) if *n == "rlib" => {
|
|
Some(config::CrateTypeRlib)
|
|
}
|
|
Some(ref n) if *n == "dylib" => {
|
|
Some(config::CrateTypeDylib)
|
|
}
|
|
Some(ref n) if *n == "lib" => {
|
|
Some(config::default_lib_output())
|
|
}
|
|
Some(ref n) if *n == "staticlib" => {
|
|
Some(config::CrateTypeStaticlib)
|
|
}
|
|
Some(ref n) if *n == "bin" => Some(config::CrateTypeExecutable),
|
|
Some(_) => {
|
|
session.add_lint(lint::builtin::UNKNOWN_CRATE_TYPES,
|
|
ast::CRATE_NODE_ID,
|
|
a.span,
|
|
"invalid `crate_type` value".to_string());
|
|
None
|
|
}
|
|
_ => {
|
|
session.span_err(a.span, "`crate_type` requires a value");
|
|
session.note("for example: `#![crate_type=\"lib\"]`");
|
|
None
|
|
}
|
|
}
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
.collect();
|
|
|
|
// If we're generating a test executable, then ignore all other output
|
|
// styles at all other locations
|
|
if session.opts.test {
|
|
return vec![config::CrateTypeExecutable];
|
|
}
|
|
|
|
// Only check command line flags if present. If no types are specified by
|
|
// command line, then reuse the empty `base` Vec to hold the types that
|
|
// will be found in crate attributes.
|
|
let mut base = session.opts.crate_types.clone();
|
|
if base.is_empty() {
|
|
base.extend(attr_types);
|
|
if base.is_empty() {
|
|
base.push(link::default_output_for_target(session));
|
|
}
|
|
base.sort();
|
|
base.dedup();
|
|
}
|
|
|
|
base.into_iter()
|
|
.filter(|crate_type| {
|
|
let res = !link::invalid_output_for_target(session, *crate_type);
|
|
|
|
if !res {
|
|
session.warn(&format!("dropping unsupported crate type `{}` for target `{}`",
|
|
*crate_type,
|
|
session.opts.target_triple));
|
|
}
|
|
|
|
res
|
|
})
|
|
.collect()
|
|
}
|
|
|
|
pub fn collect_crate_metadata(session: &Session, _attrs: &[ast::Attribute]) -> Vec<String> {
|
|
session.opts.cg.metadata.clone()
|
|
}
|
|
|
|
pub fn build_output_filenames(input: &Input,
|
|
odir: &Option<PathBuf>,
|
|
ofile: &Option<PathBuf>,
|
|
attrs: &[ast::Attribute],
|
|
sess: &Session)
|
|
-> OutputFilenames {
|
|
match *ofile {
|
|
None => {
|
|
// "-" as input file will cause the parser to read from stdin so we
|
|
// have to make up a name
|
|
// We want to toss everything after the final '.'
|
|
let dirpath = match *odir {
|
|
Some(ref d) => d.clone(),
|
|
None => PathBuf::new(),
|
|
};
|
|
|
|
// If a crate name is present, we use it as the link name
|
|
let stem = sess.opts
|
|
.crate_name
|
|
.clone()
|
|
.or_else(|| attr::find_crate_name(attrs).map(|n| n.to_string()))
|
|
.unwrap_or(input.filestem());
|
|
|
|
OutputFilenames {
|
|
out_directory: dirpath,
|
|
out_filestem: stem,
|
|
single_output_file: None,
|
|
extra: sess.opts.cg.extra_filename.clone(),
|
|
outputs: sess.opts.output_types.clone(),
|
|
}
|
|
}
|
|
|
|
Some(ref out_file) => {
|
|
let unnamed_output_types = sess.opts
|
|
.output_types
|
|
.values()
|
|
.filter(|a| a.is_none())
|
|
.count();
|
|
let ofile = if unnamed_output_types > 1 {
|
|
sess.warn("ignoring specified output filename because multiple outputs were \
|
|
requested");
|
|
None
|
|
} else {
|
|
Some(out_file.clone())
|
|
};
|
|
if *odir != None {
|
|
sess.warn("ignoring --out-dir flag due to -o flag.");
|
|
}
|
|
|
|
let cur_dir = Path::new("");
|
|
|
|
OutputFilenames {
|
|
out_directory: out_file.parent().unwrap_or(cur_dir).to_path_buf(),
|
|
out_filestem: out_file.file_stem()
|
|
.unwrap_or(OsStr::new(""))
|
|
.to_str()
|
|
.unwrap()
|
|
.to_string(),
|
|
single_output_file: ofile,
|
|
extra: sess.opts.cg.extra_filename.clone(),
|
|
outputs: sess.opts.output_types.clone(),
|
|
}
|
|
}
|
|
}
|
|
}
|