src/librustc_codegen_ssa/traits/write.rs

   1 use crate::back::lto::{LtoModuleCodegen, SerializedModule, ThinModule};
   2 use crate::back::write::{CodegenContext, FatLTOInput, ModuleConfig};
   3 use crate::{CompiledModule, ModuleCodegen};
   4
   5 use rustc_errors::{FatalError, Handler};
   6 use rustc_middle::dep_graph::WorkProduct;
   7
   8 pub trait WriteBackendMethods: 'static + Sized + Clone {
   9     type Module: Send + Sync;
  10     type TargetMachine;
  11     type ModuleBuffer: ModuleBufferMethods;
  12     type Context: ?Sized;
  13     type ThinData: Send + Sync;
  14     type ThinBuffer: ThinBufferMethods;
  15
  16     /// Performs fat LTO by merging all modules into a single one and returning it
  17     /// for further optimization.
  18     fn run_fat_lto(
  19         cgcx: &CodegenContext<Self>,
  20         modules: Vec<FatLTOInput<Self>>,
  21         cached_modules: Vec<(SerializedModule<Self::ModuleBuffer>, WorkProduct)>,
  22     ) -> Result<LtoModuleCodegen<Self>, FatalError>;
  23     /// Performs thin LTO by performing necessary global analysis and returning two
  24     /// lists, one of the modules that need optimization and another for modules that
  25     /// can simply be copied over from the incr. comp. cache.
  26     fn run_thin_lto(
  27         cgcx: &CodegenContext<Self>,
  28         modules: Vec<(String, Self::ThinBuffer)>,
  29         cached_modules: Vec<(SerializedModule<Self::ModuleBuffer>, WorkProduct)>,
  30     ) -> Result<(Vec<LtoModuleCodegen<Self>>, Vec<WorkProduct>), FatalError>;
  31     fn print_pass_timings(&self);
  32     unsafe fn optimize(
  33         cgcx: &CodegenContext<Self>,
  34         diag_handler: &Handler,
  35         module: &ModuleCodegen<Self::Module>,
  36         config: &ModuleConfig,
  37     ) -> Result<(), FatalError>;
  38     unsafe fn optimize_thin(
  39         cgcx: &CodegenContext<Self>,
  40         thin: &mut ThinModule<Self>,
  41     ) -> Result<ModuleCodegen<Self::Module>, FatalError>;
  42     unsafe fn codegen(
  43         cgcx: &CodegenContext<Self>,
  44         diag_handler: &Handler,
  45         module: ModuleCodegen<Self::Module>,
  46         config: &ModuleConfig,
  47     ) -> Result<CompiledModule, FatalError>;
  48     fn prepare_thin(module: ModuleCodegen<Self::Module>) -> (String, Self::ThinBuffer);
  49     fn serialize_module(module: ModuleCodegen<Self::Module>) -> (String, Self::ModuleBuffer);
  50     fn run_lto_pass_manager(
  51         cgcx: &CodegenContext<Self>,
  52         llmod: &ModuleCodegen<Self::Module>,
  53         config: &ModuleConfig,
  54         thin: bool,
  55     );
  56 }
  57
  58 pub trait ThinBufferMethods: Send + Sync {
  59     fn data(&self) -> &[u8];
  60 }
  61
  62 pub trait ModuleBufferMethods: Send + Sync {
  63     fn data(&self) -> &[u8];
  64 }