1 files changed, 48 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/namespace.rs b/compiler/rustc_codegen_llvm/src/debuginfo/namespace.rs
new file mode 100644
index 000000000..d5ea48c31
--- /dev/null
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/namespace.rs
@@ -0,0 +1,48 @@
+// Namespace Handling.
+
+use super::utils::{debug_context, DIB};
+use rustc_codegen_ssa::debuginfo::type_names;
+use rustc_middle::ty::{self, Instance};
+
+use crate::common::CodegenCx;
+use crate::llvm;
+use crate::llvm::debuginfo::DIScope;
+use rustc_hir::def_id::DefId;
+
+pub fn mangled_name_of_instance<'a, 'tcx>(
+    cx: &CodegenCx<'a, 'tcx>,
+    instance: Instance<'tcx>,
+) -> ty::SymbolName<'tcx> {
+    let tcx = cx.tcx;
+    tcx.symbol_name(instance)
+}
+
+pub fn item_namespace<'ll>(cx: &CodegenCx<'ll, '_>, def_id: DefId) -> &'ll DIScope {
+    if let Some(&scope) = debug_context(cx).namespace_map.borrow().get(&def_id) {
+        return scope;
+    }
+
+    let def_key = cx.tcx.def_key(def_id);
+    let parent_scope = def_key
+        .parent
+        .map(|parent| item_namespace(cx, DefId { krate: def_id.krate, index: parent }));
+
+    let namespace_name_string = {
+        let mut output = String::new();
+        type_names::push_item_name(cx.tcx, def_id, false, &mut output);
+        output
+    };
+
+    let scope = unsafe {
+        llvm::LLVMRustDIBuilderCreateNameSpace(
+            DIB(cx),
+            parent_scope,
+            namespace_name_string.as_ptr().cast(),
+            namespace_name_string.len(),
+            false, // ExportSymbols (only relevant for C++ anonymous namespaces)
+        )
+    };
+
+    debug_context(cx).namespace_map.borrow_mut().insert(def_id, scope);
+    scope
+}