Revert "Dead Virtual Function Elimination"

This reverts commit 9f6a873268e1ad9855873d9d8007086c0d01cf4f.

llvm-svn: 374844

1 files changed, 2 insertions, 33 deletions

diff --git a/clang/lib/CodeGen/CGVTables.cpp b/clang/lib/CodeGen/CGVTables.cpp
index f9f25e7e57a..a74905fd70f 100644
--- a/clang/lib/CodeGen/CGVTables.cpp
+++ b/clang/lib/CodeGen/CGVTables.cpp
@@ -808,7 +808,7 @@ CodeGenVTables::GenerateConstructionVTable(const CXXRecordDecl *RD,
   assert(!VTable->isDeclaration() && "Shouldn't set properties on declaration");
   CGM.setGVProperties(VTable, RD);
 
-  CGM.EmitVTableTypeMetadata(RD, VTable, *VTLayout.get());
+  CGM.EmitVTableTypeMetadata(VTable, *VTLayout.get());
 
   return VTable;
 }
@@ -1039,32 +1039,7 @@ bool CodeGenModule::HasHiddenLTOVisibility(const CXXRecordDecl *RD) {
   return true;
 }
 
-llvm::GlobalObject::VCallVisibility
-CodeGenModule::GetVCallVisibilityLevel(const CXXRecordDecl *RD) {
-  LinkageInfo LV = RD->getLinkageAndVisibility();
-  llvm::GlobalObject::VCallVisibility TypeVis;
-  if (!isExternallyVisible(LV.getLinkage()))
-    TypeVis = llvm::GlobalObject::VCallVisibilityTranslationUnit;
-  else if (HasHiddenLTOVisibility(RD))
-    TypeVis = llvm::GlobalObject::VCallVisibilityLinkageUnit;
-  else
-    TypeVis = llvm::GlobalObject::VCallVisibilityPublic;
-
-  for (auto B : RD->bases())
-    if (B.getType()->getAsCXXRecordDecl()->isDynamicClass())
-      TypeVis = std::min(TypeVis,
-                    GetVCallVisibilityLevel(B.getType()->getAsCXXRecordDecl()));
-
-  for (auto B : RD->vbases())
-    if (B.getType()->getAsCXXRecordDecl()->isDynamicClass())
-      TypeVis = std::min(TypeVis,
-                    GetVCallVisibilityLevel(B.getType()->getAsCXXRecordDecl()));
-
-  return TypeVis;
-}
-
-void CodeGenModule::EmitVTableTypeMetadata(const CXXRecordDecl *RD,
-                                           llvm::GlobalVariable *VTable,
+void CodeGenModule::EmitVTableTypeMetadata(llvm::GlobalVariable *VTable,
                                            const VTableLayout &VTLayout) {
   if (!getCodeGenOpts().LTOUnit)
     return;
@@ -1124,10 +1099,4 @@ void CodeGenModule::EmitVTableTypeMetadata(const CXXRecordDecl *RD,
       VTable->addTypeMetadata((PointerWidth * I).getQuantity(), MD);
     }
   }
-
-  if (getCodeGenOpts().VirtualFunctionElimination) {
-    llvm::GlobalObject::VCallVisibility TypeVis = GetVCallVisibilityLevel(RD);
-    if (TypeVis != llvm::GlobalObject::VCallVisibilityPublic)
-      VTable->addVCallVisibilityMetadata(TypeVis);
-  }
 }