120 lines
3.6 KiB
Rust
120 lines
3.6 KiB
Rust
use super::write::WriteBackendMethods;
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use super::CodegenObject;
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use crate::ModuleCodegen;
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use rustc_ast::expand::allocator::AllocatorKind;
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use rustc_errors::ErrorReported;
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use rustc_middle::dep_graph::DepGraph;
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use rustc_middle::middle::cstore::{EncodedMetadata, MetadataLoaderDyn};
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use rustc_middle::ty::layout::{HasTyCtxt, TyAndLayout};
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use rustc_middle::ty::query::Providers;
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use rustc_middle::ty::{Ty, TyCtxt};
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use rustc_session::{
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config::{self, OutputFilenames, PrintRequest},
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Session,
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};
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use rustc_span::symbol::Symbol;
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use rustc_target::abi::LayoutOf;
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pub use rustc_data_structures::sync::MetadataRef;
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use std::any::Any;
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use std::sync::Arc;
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pub trait BackendTypes {
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type Value: CodegenObject;
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type Function: CodegenObject;
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type BasicBlock: Copy;
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type Type: CodegenObject;
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type Funclet;
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// FIXME(eddyb) find a common convention for all of the debuginfo-related
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// names (choose between `Dbg`, `Debug`, `DebugInfo`, `DI` etc.).
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type DIScope: Copy;
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type DIVariable: Copy;
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}
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pub trait Backend<'tcx>:
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Sized + BackendTypes + HasTyCtxt<'tcx> + LayoutOf<Ty = Ty<'tcx>, TyAndLayout = TyAndLayout<'tcx>>
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{
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}
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impl<'tcx, T> Backend<'tcx> for T where
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Self: BackendTypes + HasTyCtxt<'tcx> + LayoutOf<Ty = Ty<'tcx>, TyAndLayout = TyAndLayout<'tcx>>
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{
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}
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pub trait CodegenBackend {
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fn init(&self, _sess: &Session) {}
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fn print(&self, _req: PrintRequest, _sess: &Session) {}
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fn target_features(&self, _sess: &Session) -> Vec<Symbol> {
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vec![]
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}
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fn print_passes(&self) {}
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fn print_version(&self) {}
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fn metadata_loader(&self) -> Box<MetadataLoaderDyn>;
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fn provide(&self, _providers: &mut Providers);
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fn provide_extern(&self, _providers: &mut Providers);
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fn codegen_crate<'tcx>(
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&self,
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tcx: TyCtxt<'tcx>,
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metadata: EncodedMetadata,
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need_metadata_module: bool,
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) -> Box<dyn Any>;
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/// This is called on the returned `Box<dyn Any>` from `codegen_backend`
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///
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/// # Panics
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///
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/// Panics when the passed `Box<dyn Any>` was not returned by `codegen_backend`.
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fn join_codegen(
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&self,
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ongoing_codegen: Box<dyn Any>,
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sess: &Session,
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dep_graph: &DepGraph,
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) -> Result<Box<dyn Any>, ErrorReported>;
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/// This is called on the returned `Box<dyn Any>` from `join_codegen`
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///
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/// # Panics
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///
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/// Panics when the passed `Box<dyn Any>` was not returned by `join_codegen`.
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fn link(
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&self,
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sess: &Session,
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codegen_results: Box<dyn Any>,
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outputs: &OutputFilenames,
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) -> Result<(), ErrorReported>;
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}
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pub trait ExtraBackendMethods: CodegenBackend + WriteBackendMethods + Sized + Send + Sync {
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fn new_metadata(&self, sess: TyCtxt<'_>, mod_name: &str) -> Self::Module;
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fn write_compressed_metadata<'tcx>(
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&self,
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tcx: TyCtxt<'tcx>,
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metadata: &EncodedMetadata,
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llvm_module: &mut Self::Module,
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);
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fn codegen_allocator<'tcx>(
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&self,
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tcx: TyCtxt<'tcx>,
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mods: &mut Self::Module,
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kind: AllocatorKind,
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);
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/// This generates the codegen unit and returns it along with
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/// a `u64` giving an estimate of the unit's processing cost.
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fn compile_codegen_unit(
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&self,
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tcx: TyCtxt<'_>,
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cgu_name: Symbol,
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) -> (ModuleCodegen<Self::Module>, u64);
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fn target_machine_factory(
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&self,
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sess: &Session,
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opt_level: config::OptLevel,
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) -> Arc<dyn Fn() -> Result<Self::TargetMachine, String> + Send + Sync>;
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fn target_cpu<'b>(&self, sess: &'b Session) -> &'b str;
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fn tune_cpu<'b>(&self, sess: &'b Session) -> Option<&'b str>;
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}
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