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// Copyright 2018 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.
use back::lto::{LtoModuleCodegen, SerializedModule, ThinModule};
use back::write::{CodegenContext, ModuleConfig};
use {CompiledModule, ModuleCodegen};
use rustc::dep_graph::WorkProduct;
use rustc::util::time_graph::Timeline;
use rustc_errors::{FatalError, Handler};
pub trait WriteBackendMethods: 'static + Sized + Clone {
type Module: Send + Sync;
type TargetMachine;
type ModuleBuffer: ModuleBufferMethods;
type Context: ?Sized;
type ThinData: Send + Sync;
type ThinBuffer: ThinBufferMethods;
/// Performs LTO, which in the case of full LTO means merging all modules into
/// a single one and returning it for further optimizing. For ThinLTO, it will
/// do the global analysis necessary and return two lists, one of the modules
/// the need optimization and another for modules that can simply be copied over
/// from the incr. comp. cache.
fn run_lto(
cgcx: &CodegenContext<Self>,
modules: Vec<ModuleCodegen<Self::Module>>,
cached_modules: Vec<(SerializedModule<Self::ModuleBuffer>, WorkProduct)>,
timeline: &mut Timeline,
) -> Result<(Vec<LtoModuleCodegen<Self>>, Vec<WorkProduct>), FatalError>;
fn print_pass_timings(&self);
unsafe fn optimize(
cgcx: &CodegenContext<Self>,
diag_handler: &Handler,
module: &ModuleCodegen<Self::Module>,
config: &ModuleConfig,
timeline: &mut Timeline,
) -> Result<(), FatalError>;
unsafe fn optimize_thin(
cgcx: &CodegenContext<Self>,
thin: &mut ThinModule<Self>,
timeline: &mut Timeline,
) -> Result<ModuleCodegen<Self::Module>, FatalError>;
unsafe fn codegen(
cgcx: &CodegenContext<Self>,
diag_handler: &Handler,
module: ModuleCodegen<Self::Module>,
config: &ModuleConfig,
timeline: &mut Timeline,
) -> Result<CompiledModule, FatalError>;
fn run_lto_pass_manager(
cgcx: &CodegenContext<Self>,
llmod: &ModuleCodegen<Self::Module>,
config: &ModuleConfig,
thin: bool,
);
}
pub trait ThinBufferMethods: Send + Sync {
fn data(&self) -> &[u8];
}
pub trait ModuleBufferMethods: Send + Sync {
fn data(&self) -> &[u8];
}
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