DI: Make StaticDataMemberCache type-safe, NFC

Change `StaticDataMemberCache` to store references to `DIDerivedType`
directly, and remove now-unnecessary casts from the accessors.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@243129 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index 93a2287b1e012eb0b625a5e1a7b3a14dbc71cfbe..9d115e3c0c7c02e4c8a2c97ca330575465b4a40b 100644 (file)
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -972,7 +972,7 @@ void CGDebugInfo::CollectRecordFields(
         if (MI != StaticDataMemberCache.end()) {
           assert(MI->second &&
                  "Static data member declaration should still exist");
-          elements.push_back(cast<llvm::DIDerivedTypeBase>(MI->second));
+          elements.push_back(MI->second);
         } else {
           auto Field = CreateRecordStaticField(V, RecordTy, record);
           elements.push_back(Field);
@@ -3115,7 +3115,7 @@ CGDebugInfo::getOrCreateStaticDataMemberDeclarationOrNull(const VarDecl *D) {
   auto MI = StaticDataMemberCache.find(D->getCanonicalDecl());
   if (MI != StaticDataMemberCache.end()) {
     assert(MI->second && "Static data member declaration should still exist");
-    return cast<llvm::DIDerivedType>(MI->second);
+    return MI->second;
   }
 
   // If the member wasn't found in the cache, lazily construct and add it to the

diff --git a/lib/CodeGen/CGDebugInfo.h b/lib/CodeGen/CGDebugInfo.h
index 4c77a8d289745304291d30eb892d66f6d3151ef2..73227bc118cc608796dd07aade1b26edd8160627 100644 (file)
--- a/lib/CodeGen/CGDebugInfo.h
+++ b/lib/CodeGen/CGDebugInfo.h
@@ -117,7 +117,8 @@ class CGDebugInfo {
   llvm::DenseMap<const NamespaceDecl *, llvm::TrackingMDRef> NameSpaceCache;
   llvm::DenseMap<const NamespaceAliasDecl *, llvm::TrackingMDRef>
       NamespaceAliasCache;
-  llvm::DenseMap<const Decl *, llvm::TrackingMDRef> StaticDataMemberCache;
+  llvm::DenseMap<const Decl *, llvm::TypedTrackingMDRef<llvm::DIDerivedType>>
+      StaticDataMemberCache;
 
   /// Helper functions for getOrCreateType.
   /// @{