1 files changed, 10 insertions, 12 deletions
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
index d808f8c5f..c3f0a0033 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
@@ -21,12 +21,13 @@ use rustc_codegen_ssa::debuginfo::type_names;
 use rustc_codegen_ssa::mir::debuginfo::{DebugScope, FunctionDebugContext, VariableKind};
 use rustc_codegen_ssa::traits::*;
 use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::stable_hasher::Hash128;
 use rustc_data_structures::sync::Lrc;
 use rustc_hir::def_id::{DefId, DefIdMap};
-use rustc_index::vec::IndexVec;
+use rustc_index::IndexVec;
 use rustc_middle::mir;
 use rustc_middle::ty::layout::LayoutOf;
-use rustc_middle::ty::subst::{GenericArgKind, SubstsRef};
+use rustc_middle::ty::subst::SubstsRef;
 use rustc_middle::ty::{self, Instance, ParamEnv, Ty, TypeVisitableExt};
 use rustc_session::config::{self, DebugInfo};
 use rustc_session::Session;
@@ -61,7 +62,7 @@ pub struct CodegenUnitDebugContext<'ll, 'tcx> {
     llcontext: &'ll llvm::Context,
     llmod: &'ll llvm::Module,
     builder: &'ll mut DIBuilder<'ll>,
-    created_files: RefCell<FxHashMap<Option<(u128, SourceFileHash)>, &'ll DIFile>>,
+    created_files: RefCell<FxHashMap<Option<(Hash128, SourceFileHash)>, &'ll DIFile>>,
 
     type_map: metadata::TypeMap<'ll, 'tcx>,
     namespace_map: RefCell<DefIdMap<&'ll DIScope>>,
@@ -481,12 +482,12 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                 let names = get_parameter_names(cx, generics);
                 iter::zip(substs, names)
                     .filter_map(|(kind, name)| {
-                        if let GenericArgKind::Type(ty) = kind.unpack() {
+                        kind.as_type().map(|ty| {
                             let actual_type =
                                 cx.tcx.normalize_erasing_regions(ParamEnv::reveal_all(), ty);
                             let actual_type_metadata = type_di_node(cx, actual_type);
                             let name = name.as_str();
-                            Some(unsafe {
+                            unsafe {
                                 Some(llvm::LLVMRustDIBuilderCreateTemplateTypeParameter(
                                     DIB(cx),
                                     None,
@@ -494,10 +495,8 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                                     name.len(),
                                     actual_type_metadata,
                                 ))
-                            })
-                        } else {
-                            None
-                        }
+                            }
+                        })
                     })
                     .collect()
             } else {
@@ -530,15 +529,14 @@ impl<'ll, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                     let impl_self_ty = cx.tcx.subst_and_normalize_erasing_regions(
                         instance.substs,
                         ty::ParamEnv::reveal_all(),
-                        cx.tcx.type_of(impl_def_id).skip_binder(),
+                        cx.tcx.type_of(impl_def_id),
                     );
 
                     // Only "class" methods are generally understood by LLVM,
                     // so avoid methods on other types (e.g., `<*mut T>::null`).
                     if let ty::Adt(def, ..) = impl_self_ty.kind() && !def.is_box() {
                         // Again, only create type information if full debuginfo is enabled
-                        if cx.sess().opts.debuginfo == DebugInfo::Full
-                            && !impl_self_ty.needs_subst()
+                        if cx.sess().opts.debuginfo == DebugInfo::Full && !impl_self_ty.has_param()
                         {
                             return (type_di_node(cx, impl_self_ty), true);
                         } else {