1 // Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! The Rust compiler.
15 //! This API is completely unstable and subject to change.
17 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
18 html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
19 html_root_url = "https://doc.rust-lang.org/nightly/")]
22 #![feature(box_patterns)]
23 #![feature(box_syntax)]
25 #![feature(custom_attribute)]
26 #![allow(unused_attributes)]
27 #![feature(i128_type)]
30 #![feature(rustc_diagnostic_macros)]
31 #![feature(slice_patterns)]
32 #![feature(conservative_impl_trait)]
34 use rustc::dep_graph::WorkProduct;
35 use syntax_pos::symbol::Symbol;
39 extern crate owning_ref;
40 #[macro_use] extern crate rustc;
41 extern crate rustc_allocator;
42 extern crate rustc_back;
43 extern crate rustc_data_structures;
44 extern crate rustc_incremental;
45 extern crate rustc_llvm as llvm;
46 extern crate rustc_platform_intrinsics as intrinsics;
47 extern crate rustc_const_math;
50 extern crate rustc_bitflags;
51 extern crate rustc_demangle;
52 extern crate jobserver;
53 extern crate num_cpus;
55 #[macro_use] extern crate log;
56 #[macro_use] extern crate syntax;
57 extern crate syntax_pos;
58 extern crate rustc_errors as errors;
59 extern crate serialize;
61 extern crate gcc; // Used to locate MSVC, not gcc :)
63 pub use base::trans_crate;
64 pub use back::symbol_names::provide;
66 pub use metadata::LlvmMetadataLoader;
67 pub use llvm_util::{init, target_features, print_version, print_passes, print, enable_llvm_debug};
71 use rustc::hir::def_id::CrateNum;
72 use rustc::util::nodemap::{FxHashSet, FxHashMap};
73 use rustc::middle::cstore::{NativeLibrary, CrateSource, LibSource};
78 pub(crate) mod linker;
81 pub(crate) mod symbol_export;
82 pub(crate) mod symbol_names;
93 mod assert_module_sources;
130 mod symbol_names_test;
138 pub struct ModuleTranslation {
139 /// The name of the module. When the crate may be saved between
140 /// compilations, incremental compilation requires that name be
141 /// unique amongst **all** crates. Therefore, it should contain
142 /// something unique to this crate (e.g., a module path) as well
143 /// as the crate name and disambiguator.
145 symbol_name_hash: u64,
146 pub source: ModuleSource,
147 pub kind: ModuleKind,
150 #[derive(Copy, Clone, Debug)]
151 pub enum ModuleKind {
157 impl ModuleTranslation {
158 pub fn into_compiled_module(self, emit_obj: bool, emit_bc: bool) -> CompiledModule {
159 let pre_existing = match self.source {
160 ModuleSource::Preexisting(_) => true,
161 ModuleSource::Translated(_) => false,
165 name: self.name.clone(),
167 symbol_name_hash: self.symbol_name_hash,
175 impl Drop for ModuleTranslation {
178 ModuleSource::Preexisting(_) => {
179 // Nothing to dispose.
181 ModuleSource::Translated(llvm) => {
183 llvm::LLVMDisposeModule(llvm.llmod);
184 llvm::LLVMContextDispose(llvm.llcx);
192 pub struct CompiledModule {
194 pub kind: ModuleKind,
195 pub symbol_name_hash: u64,
196 pub pre_existing: bool,
202 pub enum ModuleSource {
203 /// Copy the `.o` files or whatever from the incr. comp. directory.
204 Preexisting(WorkProduct),
206 /// Rebuild from this LLVM module.
207 Translated(ModuleLlvm),
210 #[derive(Copy, Clone, Debug)]
211 pub struct ModuleLlvm {
212 llcx: llvm::ContextRef,
213 pub llmod: llvm::ModuleRef,
216 unsafe impl Send for ModuleTranslation { }
217 unsafe impl Sync for ModuleTranslation { }
219 pub struct CrateTranslation {
220 pub crate_name: Symbol,
221 pub modules: Vec<CompiledModule>,
222 allocator_module: Option<CompiledModule>,
223 pub link: rustc::middle::cstore::LinkMeta,
224 pub metadata: rustc::middle::cstore::EncodedMetadata,
225 windows_subsystem: Option<String>,
226 linker_info: back::linker::LinkerInfo,
227 crate_info: CrateInfo,
230 // Misc info we load from metadata to persist beyond the tcx
231 pub struct CrateInfo {
232 panic_runtime: Option<CrateNum>,
233 compiler_builtins: Option<CrateNum>,
234 profiler_runtime: Option<CrateNum>,
235 sanitizer_runtime: Option<CrateNum>,
236 is_no_builtins: FxHashSet<CrateNum>,
237 native_libraries: FxHashMap<CrateNum, Rc<Vec<NativeLibrary>>>,
238 crate_name: FxHashMap<CrateNum, String>,
239 used_libraries: Rc<Vec<NativeLibrary>>,
240 link_args: Rc<Vec<String>>,
241 used_crate_source: FxHashMap<CrateNum, Rc<CrateSource>>,
242 used_crates_static: Vec<(CrateNum, LibSource)>,
243 used_crates_dynamic: Vec<(CrateNum, LibSource)>,
246 __build_diagnostic_array! { librustc_trans, DIAGNOSTICS }