From abb9bf4bcf98a226d9350448e31411eb55e9efb0 Mon Sep 17 00:00:00 2001
From: Nick Desaulniers <ndesaulniers@google.com>
Date: Fri, 7 Aug 2020 16:11:41 -0700
Subject: Revert "[Clang] implement -fno-eliminate-unused-debug-types"

This reverts commit e486921fd6cf96ae9114adac455f7c0b5c1088a7.

Breaks windows builds and osx builds.
---
 clang/lib/CodeGen/CodeGenModule.cpp | 32 ++++----------------------------
 1 file changed, 4 insertions(+), 28 deletions(-)

(limited to 'clang/lib/CodeGen/CodeGenModule.cpp')

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 67f06ac1c07c..f3712ea1f541 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -5392,21 +5392,16 @@ void CodeGenModule::EmitTopLevelDecl(Decl *D) {
           Spec->hasDefinition())
         DI->completeTemplateDefinition(*Spec);
   } LLVM_FALLTHROUGH;
-  case Decl::CXXRecord: {
-    CXXRecordDecl *CRD = cast<CXXRecordDecl>(D);
-    if (CGDebugInfo *DI = getModuleDebugInfo()) {
-      if (CRD->hasDefinition())
-        DI->EmitAndRetainType(getContext().getRecordType(cast<RecordDecl>(D)));
+  case Decl::CXXRecord:
+    if (CGDebugInfo *DI = getModuleDebugInfo())
       if (auto *ES = D->getASTContext().getExternalSource())
         if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
-          DI->completeUnusedClass(*CRD);
-    }
+          DI->completeUnusedClass(cast<CXXRecordDecl>(*D));
     // Emit any static data members, they may be definitions.
-    for (auto *I : CRD->decls())
+    for (auto *I : cast<CXXRecordDecl>(D)->decls())
       if (isa<VarDecl>(I) || isa<CXXRecordDecl>(I))
         EmitTopLevelDecl(I);
     break;
-  }
     // No code generation needed.
   case Decl::UsingShadow:
   case Decl::ClassTemplate:
@@ -5592,25 +5587,6 @@ void CodeGenModule::EmitTopLevelDecl(Decl *D) {
     EmitOMPRequiresDecl(cast<OMPRequiresDecl>(D));
     break;
 
-  case Decl::Typedef:
-  case Decl::TypeAlias: // using foo = bar; [C++11]
-    if (CGDebugInfo *DI = getModuleDebugInfo())
-      DI->EmitAndRetainType(
-          getContext().getTypedefType(cast<TypedefNameDecl>(D)));
-    break;
-
-  case Decl::Record:
-    if (CGDebugInfo *DI = getModuleDebugInfo())
-      if (cast<RecordDecl>(D)->getDefinition())
-        DI->EmitAndRetainType(getContext().getRecordType(cast<RecordDecl>(D)));
-    break;
-
-  case Decl::Enum:
-    if (CGDebugInfo *DI = getModuleDebugInfo())
-      if (cast<EnumDecl>(D)->getDefinition())
-        DI->EmitAndRetainType(getContext().getEnumType(cast<EnumDecl>(D)));
-    break;
-
   default:
     // Make sure we handled everything we should, every other kind is a
     // non-top-level decl.  FIXME: Would be nice to have an isTopLevelDeclKind
-- 
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