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use std::path::PathBuf;
use rustc_errors::DiagCtxtHandle;
use rustc_middle::dep_graph::WorkProduct;
use crate::back::lto::{SerializedModule, ThinModule};
use crate::back::write::{CodegenContext, FatLtoInput, ModuleConfig};
use crate::{CompiledModule, ModuleCodegen};
pub trait WriteBackendMethods: Clone + 'static {
type Module: Send + Sync;
type TargetMachine;
type TargetMachineError;
type ModuleBuffer: ModuleBufferMethods;
type ThinData: Send + Sync;
type ThinBuffer: ThinBufferMethods;
/// Performs fat LTO by merging all modules into a single one, running autodiff
/// if necessary and running any further optimizations
fn run_and_optimize_fat_lto(
cgcx: &CodegenContext<Self>,
exported_symbols_for_lto: &[String],
each_linked_rlib_for_lto: &[PathBuf],
modules: Vec<FatLtoInput<Self>>,
) -> ModuleCodegen<Self::Module>;
/// Performs thin LTO by performing necessary global analysis and returning two
/// lists, one of the modules that need optimization and another for modules that
/// can simply be copied over from the incr. comp. cache.
fn run_thin_lto(
cgcx: &CodegenContext<Self>,
exported_symbols_for_lto: &[String],
each_linked_rlib_for_lto: &[PathBuf],
modules: Vec<(String, Self::ThinBuffer)>,
cached_modules: Vec<(SerializedModule<Self::ModuleBuffer>, WorkProduct)>,
) -> (Vec<ThinModule<Self>>, Vec<WorkProduct>);
fn print_pass_timings(&self);
fn print_statistics(&self);
fn optimize(
cgcx: &CodegenContext<Self>,
dcx: DiagCtxtHandle<'_>,
module: &mut ModuleCodegen<Self::Module>,
config: &ModuleConfig,
);
fn optimize_thin(
cgcx: &CodegenContext<Self>,
thin: ThinModule<Self>,
) -> ModuleCodegen<Self::Module>;
fn codegen(
cgcx: &CodegenContext<Self>,
module: ModuleCodegen<Self::Module>,
config: &ModuleConfig,
) -> CompiledModule;
fn prepare_thin(module: ModuleCodegen<Self::Module>) -> (String, Self::ThinBuffer);
fn serialize_module(module: ModuleCodegen<Self::Module>) -> (String, Self::ModuleBuffer);
}
pub trait ThinBufferMethods: Send + Sync {
fn data(&self) -> &[u8];
}
pub trait ModuleBufferMethods: Send + Sync {
fn data(&self) -> &[u8];
}
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