Auto merge of #83610 - bjorn3:driver_cleanup, r=cjgillot

rustc_driver cleanup

Best reviewed one commit at a time.

2 files changed, 3 insertions, 40 deletions

diff --git a/compiler/rustc_codegen_llvm/src/attributes.rs b/compiler/rustc_codegen_llvm/src/attributes.rs
index 9e5e2b1039e..6a032b9be72 100644
--- a/compiler/rustc_codegen_llvm/src/attributes.rs
+++ b/compiler/rustc_codegen_llvm/src/attributes.rs
@@ -4,12 +4,10 @@ use std::ffi::CString;
 
 use cstr::cstr;
 use rustc_codegen_ssa::traits::*;
-use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::small_c_str::SmallCStr;
 use rustc_hir::def_id::DefId;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::ty::layout::HasTyCtxt;
-use rustc_middle::ty::query::Providers;
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_session::config::OptLevel;
 use rustc_session::Session;
@@ -355,35 +353,6 @@ pub fn from_fn_attrs(cx: &CodegenCx<'ll, 'tcx>, llfn: &'ll Value, instance: ty::
     }
 }
 
-pub fn provide_both(providers: &mut Providers) {
-    providers.wasm_import_module_map = |tcx, cnum| {
-        // Build up a map from DefId to a `NativeLib` structure, where
-        // `NativeLib` internally contains information about
-        // `#[link(wasm_import_module = "...")]` for example.
-        let native_libs = tcx.native_libraries(cnum);
-
-        let def_id_to_native_lib = native_libs
-            .iter()
-            .filter_map(|lib| lib.foreign_module.map(|id| (id, lib)))
-            .collect::<FxHashMap<_, _>>();
-
-        let mut ret = FxHashMap::default();
-        for (def_id, lib) in tcx.foreign_modules(cnum).iter() {
-            let module = def_id_to_native_lib.get(&def_id).and_then(|s| s.wasm_import_module);
-            let module = match module {
-                Some(s) => s,
-                None => continue,
-            };
-            ret.extend(lib.foreign_items.iter().map(|id| {
-                assert_eq!(id.krate, cnum);
-                (*id, module.to_string())
-            }));
-        }
-
-        ret
-    };
-}
-
 fn wasm_import_module(tcx: TyCtxt<'_>, id: DefId) -> Option<CString> {
     tcx.wasm_import_module_map(id.krate).get(&id).map(|s| CString::new(&s[..]).unwrap())
 }
diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs
index bc35aa72965..91062926788 100644
--- a/compiler/rustc_codegen_llvm/src/lib.rs
+++ b/compiler/rustc_codegen_llvm/src/lib.rs
@@ -254,13 +254,8 @@ impl CodegenBackend for LlvmCodegenBackend {
         Box::new(metadata::LlvmMetadataLoader)
     }
 
-    fn provide(&self, providers: &mut ty::query::Providers) {
-        attributes::provide_both(providers);
-    }
-
-    fn provide_extern(&self, providers: &mut ty::query::Providers) {
-        attributes::provide_both(providers);
-    }
+    fn provide(&self, _providers: &mut ty::query::Providers) {}
+    fn provide_extern(&self, _providers: &mut ty::query::Providers) {}
 
     fn codegen_crate<'tcx>(
         &self,
@@ -271,6 +266,7 @@ impl CodegenBackend for LlvmCodegenBackend {
         Box::new(rustc_codegen_ssa::base::codegen_crate(
             LlvmCodegenBackend(()),
             tcx,
+            crate::llvm_util::target_cpu(tcx.sess).to_string(),
             metadata,
             need_metadata_module,
         ))
@@ -306,13 +302,11 @@ impl CodegenBackend for LlvmCodegenBackend {
 
         // Run the linker on any artifacts that resulted from the LLVM run.
         // This should produce either a finished executable or library.
-        let target_cpu = crate::llvm_util::target_cpu(sess);
         link_binary::<LlvmArchiveBuilder<'_>>(
             sess,
             &codegen_results,
             outputs,
             &codegen_results.crate_name.as_str(),
-            target_cpu,
         );
 
         Ok(())