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lib.rs
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// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! The Rust compiler.
//!
//! # Note
//!
//! This API is completely unstable and subject to change.
#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
html_root_url = "https://doc.rust-lang.org/nightly/")]
#![deny(warnings)]
#![feature(box_patterns)]
#![feature(box_syntax)]
#![feature(custom_attribute)]
#![allow(unused_attributes)]
#![feature(i128_type)]
#![feature(i128)]
#![feature(inclusive_range)]
#![feature(inclusive_range_syntax)]
#![feature(libc)]
#![feature(quote)]
#![feature(rustc_diagnostic_macros)]
#![feature(slice_patterns)]
#![feature(conservative_impl_trait)]
use rustc::dep_graph::WorkProduct;
use syntax_pos::symbol::Symbol;
#[macro_use]
extern crate bitflags;
extern crate flate2;
extern crate libc;
#[macro_use] extern crate rustc;
extern crate jobserver;
extern crate num_cpus;
extern crate rustc_mir;
extern crate rustc_allocator;
extern crate rustc_apfloat;
extern crate rustc_back;
extern crate rustc_binaryen;
extern crate rustc_const_math;
extern crate rustc_data_structures;
extern crate rustc_demangle;
extern crate rustc_incremental;
extern crate rustc_llvm as llvm;
extern crate rustc_platform_intrinsics as intrinsics;
extern crate rustc_trans_utils;
#[macro_use] extern crate log;
#[macro_use] extern crate syntax;
extern crate syntax_pos;
extern crate rustc_errors as errors;
extern crate serialize;
#[cfg(windows)]
extern crate cc; // Used to locate MSVC
extern crate tempdir;
pub use base::trans_crate;
use back::bytecode::RLIB_BYTECODE_EXTENSION;
pub use metadata::LlvmMetadataLoader;
pub use llvm_util::{init, target_features, print_version, print_passes, print};
use std::any::Any;
use std::path::PathBuf;
use std::rc::Rc;
use std::sync::mpsc;
use rustc::dep_graph::DepGraph;
use rustc::hir::def_id::CrateNum;
use rustc::middle::cstore::MetadataLoader;
use rustc::middle::cstore::{NativeLibrary, CrateSource, LibSource};
use rustc::session::Session;
use rustc::session::config::{OutputFilenames, OutputType};
use rustc::ty::{self, TyCtxt};
use rustc::util::nodemap::{FxHashSet, FxHashMap};
use rustc_mir::monomorphize;
mod diagnostics;
pub mod back {
mod archive;
pub mod bytecode;
mod command;
pub(crate) mod linker;
pub mod link;
mod lto;
pub(crate) mod symbol_export;
pub(crate) mod symbol_names;
pub mod write;
mod rpath;
}
mod abi;
mod allocator;
mod asm;
mod assert_module_sources;
mod attributes;
mod base;
mod builder;
mod cabi_aarch64;
mod cabi_arm;
mod cabi_asmjs;
mod cabi_hexagon;
mod cabi_mips;
mod cabi_mips64;
mod cabi_msp430;
mod cabi_nvptx;
mod cabi_nvptx64;
mod cabi_powerpc;
mod cabi_powerpc64;
mod cabi_s390x;
mod cabi_sparc;
mod cabi_sparc64;
mod cabi_x86;
mod cabi_x86_64;
mod cabi_x86_win64;
mod callee;
mod common;
mod consts;
mod context;
mod debuginfo;
mod declare;
mod glue;
mod intrinsic;
mod llvm_util;
mod metadata;
mod meth;
mod mir;
mod symbol_names_test;
mod time_graph;
mod trans_item;
mod type_;
mod type_of;
mod value;
pub struct LlvmTransCrate(());
impl LlvmTransCrate {
pub fn new() -> Self {
LlvmTransCrate(())
}
}
impl rustc_trans_utils::trans_crate::TransCrate for LlvmTransCrate {
type MetadataLoader = metadata::LlvmMetadataLoader;
type OngoingCrateTranslation = back::write::OngoingCrateTranslation;
type TranslatedCrate = CrateTranslation;
fn metadata_loader() -> Box<MetadataLoader> {
box metadata::LlvmMetadataLoader
}
fn provide(providers: &mut ty::maps::Providers) {
back::symbol_names::provide(providers);
back::symbol_export::provide(providers);
base::provide(providers);
}
fn provide_extern(providers: &mut ty::maps::Providers) {
back::symbol_export::provide_extern(providers);
}
fn trans_crate<'a, 'tcx>(
tcx: TyCtxt<'a, 'tcx, 'tcx>,
rx: mpsc::Receiver<Box<Any + Send>>
) -> Self::OngoingCrateTranslation {
base::trans_crate(tcx, rx)
}
fn join_trans(
trans: Self::OngoingCrateTranslation,
sess: &Session,
dep_graph: &DepGraph
) -> Self::TranslatedCrate {
trans.join(sess, dep_graph)
}
fn link_binary(sess: &Session, trans: &Self::TranslatedCrate, outputs: &OutputFilenames) {
back::link::link_binary(sess, trans, outputs, &trans.crate_name.as_str());
}
fn dump_incremental_data(trans: &Self::TranslatedCrate) {
back::write::dump_incremental_data(trans);
}
}
pub struct ModuleTranslation {
/// The name of the module. When the crate may be saved between
/// compilations, incremental compilation requires that name be
/// unique amongst **all** crates. Therefore, it should contain
/// something unique to this crate (e.g., a module path) as well
/// as the crate name and disambiguator.
name: String,
llmod_id: String,
pub source: ModuleSource,
pub kind: ModuleKind,
}
#[derive(Copy, Clone, Debug, PartialEq)]
pub enum ModuleKind {
Regular,
Metadata,
Allocator,
}
impl ModuleTranslation {
pub fn llvm(&self) -> Option<&ModuleLlvm> {
match self.source {
ModuleSource::Translated(ref llvm) => Some(llvm),
ModuleSource::Preexisting(_) => None,
}
}
pub fn into_compiled_module(self,
emit_obj: bool,
emit_bc: bool,
emit_bc_compressed: bool,
outputs: &OutputFilenames) -> CompiledModule {
let pre_existing = match self.source {
ModuleSource::Preexisting(_) => true,
ModuleSource::Translated(_) => false,
};
let object = if emit_obj {
Some(outputs.temp_path(OutputType::Object, Some(&self.name)))
} else {
None
};
let bytecode = if emit_bc {
Some(outputs.temp_path(OutputType::Bitcode, Some(&self.name)))
} else {
None
};
let bytecode_compressed = if emit_bc_compressed {
Some(outputs.temp_path(OutputType::Bitcode, Some(&self.name))
.with_extension(RLIB_BYTECODE_EXTENSION))
} else {
None
};
CompiledModule {
llmod_id: self.llmod_id,
name: self.name.clone(),
kind: self.kind,
pre_existing,
object,
bytecode,
bytecode_compressed,
}
}
}
#[derive(Debug)]
pub struct CompiledModule {
pub name: String,
pub llmod_id: String,
pub kind: ModuleKind,
pub pre_existing: bool,
pub object: Option<PathBuf>,
pub bytecode: Option<PathBuf>,
pub bytecode_compressed: Option<PathBuf>,
}
pub enum ModuleSource {
/// Copy the `.o` files or whatever from the incr. comp. directory.
Preexisting(WorkProduct),
/// Rebuild from this LLVM module.
Translated(ModuleLlvm),
}
#[derive(Debug)]
pub struct ModuleLlvm {
llcx: llvm::ContextRef,
pub llmod: llvm::ModuleRef,
tm: llvm::TargetMachineRef,
}
unsafe impl Send for ModuleLlvm { }
unsafe impl Sync for ModuleLlvm { }
impl Drop for ModuleLlvm {
fn drop(&mut self) {
unsafe {
llvm::LLVMDisposeModule(self.llmod);
llvm::LLVMContextDispose(self.llcx);
llvm::LLVMRustDisposeTargetMachine(self.tm);
}
}
}
pub struct CrateTranslation {
pub crate_name: Symbol,
pub modules: Vec<CompiledModule>,
allocator_module: Option<CompiledModule>,
metadata_module: CompiledModule,
pub link: rustc::middle::cstore::LinkMeta,
pub metadata: rustc::middle::cstore::EncodedMetadata,
windows_subsystem: Option<String>,
linker_info: back::linker::LinkerInfo,
crate_info: CrateInfo,
}
// Misc info we load from metadata to persist beyond the tcx
pub struct CrateInfo {
panic_runtime: Option<CrateNum>,
compiler_builtins: Option<CrateNum>,
profiler_runtime: Option<CrateNum>,
sanitizer_runtime: Option<CrateNum>,
is_no_builtins: FxHashSet<CrateNum>,
native_libraries: FxHashMap<CrateNum, Rc<Vec<NativeLibrary>>>,
crate_name: FxHashMap<CrateNum, String>,
used_libraries: Rc<Vec<NativeLibrary>>,
link_args: Rc<Vec<String>>,
used_crate_source: FxHashMap<CrateNum, Rc<CrateSource>>,
used_crates_static: Vec<(CrateNum, LibSource)>,
used_crates_dynamic: Vec<(CrateNum, LibSource)>,
}
#[cfg(not(stage0))] // remove after the next snapshot
__build_diagnostic_array! { librustc_trans, DIAGNOSTICS }