67 lines
2.3 KiB
Rust
67 lines
2.3 KiB
Rust
// Copyright 2018 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::ty::layout::{HasTyCtxt, LayoutOf, TyLayout};
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use rustc::ty::Ty;
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use super::write::WriteBackendMethods;
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use super::CodegenObject;
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use rustc::middle::allocator::AllocatorKind;
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use rustc::middle::cstore::EncodedMetadata;
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use rustc::mir::mono::Stats;
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use rustc::session::Session;
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use rustc::ty::TyCtxt;
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use rustc_codegen_utils::codegen_backend::CodegenBackend;
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use std::sync::Arc;
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use syntax_pos::symbol::InternedString;
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pub trait BackendTypes {
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type Value: CodegenObject;
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type BasicBlock: Copy;
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type Type: CodegenObject;
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type Context;
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type Funclet;
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type DIScope: 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>, TyLayout = TyLayout<'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>, TyLayout = TyLayout<'tcx>>
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{}
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pub trait ExtraBackendMethods: CodegenBackend + WriteBackendMethods + Sized + Send {
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fn new_metadata(&self, sess: &Session, mod_name: &str) -> Self::Module;
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fn write_metadata<'b, 'gcx>(
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&self,
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tcx: TyCtxt<'b, 'gcx, 'gcx>,
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metadata: &Self::Module,
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) -> EncodedMetadata;
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fn codegen_allocator(&self, tcx: TyCtxt, mods: &Self::Module, kind: AllocatorKind);
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fn compile_codegen_unit<'a, 'tcx: 'a>(
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&self,
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tcx: TyCtxt<'a, 'tcx, 'tcx>,
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cgu_name: InternedString,
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) -> Stats;
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// If find_features is true this won't access `sess.crate_types` by assuming
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// that `is_pie_binary` is false. When we discover LLVM target features
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// `sess.crate_types` is uninitialized so we cannot access it.
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fn target_machine_factory(
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&self,
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sess: &Session,
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find_features: bool,
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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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}
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