pub trait CodegenBackend {
    // Required methods
    fn locale_resource(&self) -> &'static str;
    fn codegen_crate<'tcx>(
        &self,
        tcx: TyCtxt<'tcx>,
        metadata: EncodedMetadata,
        need_metadata_module: bool
    ) -> Box<dyn Any>;
    fn join_codegen(
        &self,
        ongoing_codegen: Box<dyn Any>,
        sess: &Session,
        outputs: &OutputFilenames
    ) -> (CodegenResults, FxIndexMap<WorkProductId, WorkProduct>);
    fn link(
        &self,
        sess: &Session,
        codegen_results: CodegenResults,
        outputs: &OutputFilenames
    ) -> Result<(), ErrorGuaranteed>;

    // Provided methods
    fn init(&self, _sess: &Session) { ... }
    fn print(
        &self,
        _req: &PrintRequest,
        _out: &mut dyn PrintBackendInfo,
        _sess: &Session
    ) { ... }
    fn target_features(
        &self,
        _sess: &Session,
        _allow_unstable: bool
    ) -> Vec<Symbol> { ... }
    fn print_passes(&self) { ... }
    fn print_version(&self) { ... }
    fn target_override(&self, _opts: &Options) -> Option<Target> { ... }
    fn metadata_loader(&self) -> Box<MetadataLoaderDyn> { ... }
    fn provide(&self, _providers: &mut Providers) { ... }
}

Required Methods§

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fn locale_resource(&self) -> &'static str

Locale resources for diagnostic messages - a string the content of the Fluent resource. Called before init so that all other functions are able to emit translatable diagnostics.

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fn codegen_crate<'tcx>( &self, tcx: TyCtxt<'tcx>, metadata: EncodedMetadata, need_metadata_module: bool ) -> Box<dyn Any>

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fn join_codegen( &self, ongoing_codegen: Box<dyn Any>, sess: &Session, outputs: &OutputFilenames ) -> (CodegenResults, FxIndexMap<WorkProductId, WorkProduct>)

This is called on the returned Box<dyn Any> from codegen_backend

§Panics

Panics when the passed Box<dyn Any> was not returned by codegen_backend.

This is called on the returned CodegenResults from join_codegen

Provided Methods§

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fn init(&self, _sess: &Session)

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fn print( &self, _req: &PrintRequest, _out: &mut dyn PrintBackendInfo, _sess: &Session )

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fn target_features(&self, _sess: &Session, _allow_unstable: bool) -> Vec<Symbol>

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fn print_passes(&self)

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fn print_version(&self)

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fn target_override(&self, _opts: &Options) -> Option<Target>

If this plugin provides additional builtin targets, provide the one enabled by the options here. Be careful: this is called before init() is called.

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fn metadata_loader(&self) -> Box<MetadataLoaderDyn>

The metadata loader used to load rlib and dylib metadata.

Alternative codegen backends may want to use different rlib or dylib formats than the default native static archives and dynamic libraries.

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fn provide(&self, _providers: &mut Providers)

Implementors§