| #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")] |
| |
| #![feature(box_patterns)] |
| #![feature(box_syntax)] |
| #![feature(core_intrinsics)] |
| #![feature(libc)] |
| #![feature(rustc_diagnostic_macros)] |
| #![feature(stmt_expr_attributes)] |
| #![feature(try_blocks)] |
| #![feature(in_band_lifetimes)] |
| #![feature(nll)] |
| #![feature(trusted_len)] |
| #![allow(unused_attributes)] |
| #![allow(dead_code)] |
| #![deny(rust_2018_idioms)] |
| #![deny(internal)] |
| #![deny(unused_lifetimes)] |
| #![allow(explicit_outlives_requirements)] |
| |
| #![recursion_limit="256"] |
| |
| //! This crate contains codegen code that is used by all codegen backends (LLVM and others). |
| //! The backend-agnostic functions of this crate use functions defined in various traits that |
| //! have to be implemented by each backends. |
| |
| #[macro_use] extern crate log; |
| #[macro_use] extern crate rustc; |
| #[macro_use] extern crate rustc_data_structures; |
| #[macro_use] extern crate syntax; |
| |
| use std::path::PathBuf; |
| use rustc::dep_graph::WorkProduct; |
| use rustc::session::config::{OutputFilenames, OutputType}; |
| use rustc::middle::lang_items::LangItem; |
| use rustc::hir::def_id::CrateNum; |
| use rustc_data_structures::fx::{FxHashMap, FxHashSet}; |
| use rustc_data_structures::sync::Lrc; |
| use rustc_data_structures::svh::Svh; |
| use rustc::middle::cstore::{LibSource, CrateSource, NativeLibrary}; |
| use syntax_pos::symbol::Symbol; |
| |
| // N.B., this module needs to be declared first so diagnostics are |
| // registered before they are used. |
| mod error_codes; |
| |
| pub mod common; |
| pub mod traits; |
| pub mod mir; |
| pub mod debuginfo; |
| pub mod base; |
| pub mod callee; |
| pub mod glue; |
| pub mod meth; |
| pub mod mono_item; |
| pub mod back; |
| |
| pub struct ModuleCodegen<M> { |
| /// 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. |
| /// We currently generate these names via CodegenUnit::build_cgu_name(). |
| pub name: String, |
| pub module_llvm: M, |
| pub kind: ModuleKind, |
| } |
| |
| pub const METADATA_FILENAME: &str = "rust.metadata.bin"; |
| pub const RLIB_BYTECODE_EXTENSION: &str = "bc.z"; |
| |
| impl<M> ModuleCodegen<M> { |
| pub fn into_compiled_module(self, |
| emit_obj: bool, |
| emit_bc: bool, |
| emit_bc_compressed: bool, |
| outputs: &OutputFilenames) -> CompiledModule { |
| 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 { |
| name: self.name.clone(), |
| kind: self.kind, |
| object, |
| bytecode, |
| bytecode_compressed, |
| } |
| } |
| } |
| |
| #[derive(Debug)] |
| pub struct CompiledModule { |
| pub name: String, |
| pub kind: ModuleKind, |
| pub object: Option<PathBuf>, |
| pub bytecode: Option<PathBuf>, |
| pub bytecode_compressed: Option<PathBuf>, |
| } |
| |
| pub struct CachedModuleCodegen { |
| pub name: String, |
| pub source: WorkProduct, |
| } |
| |
| #[derive(Copy, Clone, Debug, PartialEq)] |
| pub enum ModuleKind { |
| Regular, |
| Metadata, |
| Allocator, |
| } |
| |
| bitflags::bitflags! { |
| pub struct MemFlags: u8 { |
| const VOLATILE = 1 << 0; |
| const NONTEMPORAL = 1 << 1; |
| const UNALIGNED = 1 << 2; |
| } |
| } |
| |
| /// Misc info we load from metadata to persist beyond the tcx. |
| pub struct CrateInfo { |
| pub panic_runtime: Option<CrateNum>, |
| pub compiler_builtins: Option<CrateNum>, |
| pub profiler_runtime: Option<CrateNum>, |
| pub sanitizer_runtime: Option<CrateNum>, |
| pub is_no_builtins: FxHashSet<CrateNum>, |
| pub native_libraries: FxHashMap<CrateNum, Lrc<Vec<NativeLibrary>>>, |
| pub crate_name: FxHashMap<CrateNum, String>, |
| pub used_libraries: Lrc<Vec<NativeLibrary>>, |
| pub link_args: Lrc<Vec<String>>, |
| pub used_crate_source: FxHashMap<CrateNum, Lrc<CrateSource>>, |
| pub used_crates_static: Vec<(CrateNum, LibSource)>, |
| pub used_crates_dynamic: Vec<(CrateNum, LibSource)>, |
| pub lang_item_to_crate: FxHashMap<LangItem, CrateNum>, |
| pub missing_lang_items: FxHashMap<CrateNum, Vec<LangItem>>, |
| } |
| |
| |
| pub struct CodegenResults { |
| pub crate_name: Symbol, |
| pub modules: Vec<CompiledModule>, |
| pub allocator_module: Option<CompiledModule>, |
| pub metadata_module: Option<CompiledModule>, |
| pub crate_hash: Svh, |
| pub metadata: rustc::middle::cstore::EncodedMetadata, |
| pub windows_subsystem: Option<String>, |
| pub linker_info: back::linker::LinkerInfo, |
| pub crate_info: CrateInfo, |
| } |
| |
| __build_diagnostic_array! { librustc_codegen_ssa, DIAGNOSTICS } |