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link: rely on the default metadata loader.

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Eduard-Mihai Burtescu 2021-08-13 10:58:40 +03:00 committed by Eduard-Mihai Burtescu
parent 731a5e86aa
commit 4dcb50169f
2 changed files with 1 additions and 42 deletions
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19
crates/rustc_codegen_spirv/src/lib.rs
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@ -167,10 +167,9 @@ use rustc_codegen_ssa::traits::{
};
use rustc_codegen_ssa::{CodegenResults, CompiledModule, ModuleCodegen, ModuleKind};
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::sync::MetadataRef;
use rustc_errors::{ErrorReported, FatalError, Handler};
use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
use rustc_middle::middle::cstore::{EncodedMetadata, MetadataLoader, MetadataLoaderDyn};
use rustc_middle::middle::cstore::EncodedMetadata;
use rustc_middle::mir::mono::{Linkage, MonoItem, Visibility};
use rustc_middle::ty::print::with_no_trimmed_paths;
use rustc_middle::ty::{self, query, DefIdTree, Instance, InstanceDef, TyCtxt};
@ -262,18 +261,6 @@ impl ThinBufferMethods for SpirvThinBuffer {
}
}
struct SpirvMetadataLoader;
impl MetadataLoader for SpirvMetadataLoader {
fn get_rlib_metadata(&self, _: &Target, path: &Path) -> Result<MetadataRef, String> {
link::read_metadata(path)
}
fn get_dylib_metadata(&self, target: &Target, path: &Path) -> Result<MetadataRef, String> {
rustc_codegen_ssa::back::metadata::DefaultMetadataLoader.get_dylib_metadata(target, path)
}
}
#[derive(Clone)]
struct SpirvCodegenBackend;
@ -299,10 +286,6 @@ impl CodegenBackend for SpirvCodegenBackend {
}
}
fn metadata_loader(&self) -> Box<MetadataLoaderDyn> {
Box::new(SpirvMetadataLoader)
}
fn provide(&self, providers: &mut query::Providers) {
// This is a lil weird: so, we obviously don't support C ABIs at all. However, libcore does declare some extern
// C functions:

24
crates/rustc_codegen_spirv/src/link.rs
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@ -8,9 +8,6 @@ use rustc_codegen_ssa::back::lto::{LtoModuleCodegen, SerializedModule, ThinModul
use rustc_codegen_ssa::back::write::CodegenContext;
use rustc_codegen_ssa::{CodegenResults, NativeLib, METADATA_FILENAME};
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::owning_ref::OwningRef;
use rustc_data_structures::rustc_erase_owner;
use rustc_data_structures::sync::MetadataRef;
use rustc_errors::FatalError;
use rustc_middle::bug;
use rustc_middle::dep_graph::WorkProduct;
@ -481,27 +478,6 @@ fn create_archive(files: &[&Path], metadata: &[u8], out_filename: &Path) {
builder.into_inner().unwrap();
}
pub fn read_metadata(rlib: &Path) -> Result<MetadataRef, String> {
fn read_metadata_internal(rlib: &Path) -> Result<Option<MetadataRef>, std::io::Error> {
let mut archive = Archive::new(File::open(rlib).unwrap());
while let Some(entry) = archive.next_entry() {
let mut entry = entry?;
if entry.header().identifier() == METADATA_FILENAME.as_bytes() {
let mut bytes = Vec::new();
entry.read_to_end(&mut bytes)?;
let buf: OwningRef<Vec<u8>, [u8]> = OwningRef::new(bytes);
return Ok(Some(rustc_erase_owner!(buf.map_owner_box())));
}
}
Ok(None)
}
match read_metadata_internal(rlib) {
Ok(Some(m)) => Ok(m),
Ok(None) => Err(format!("No .metadata file in rlib: {:?}", rlib)),
Err(io) => Err(format!("Failed to read rlib at {:?}: {}", rlib, io)),
}
}
/// This is the actual guts of linking: the rest of the link-related functions are just digging through rustc's
/// shenanigans to collect all the object files we need to link.
fn do_link(