From: Eric Christopher <echristo@apple.com>
Date: Tue, 13 Mar 2012 23:40:48 +0000 (+0000)
Subject: When adding member functions to a class add any specializations of
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3b10cfe6b804cef041ddf85854d2d536f7a82cb6;p=clang

When adding member functions to a class add any specializations of
function templates as well.

A future commit will mangle the added name with the template args
like classes are mangled.

Fixes rdar://10986010

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152683 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index bd37197ae3..d88f24339a 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -831,7 +831,7 @@ CGDebugInfo::getOrCreateMethodType(const CXXMethodDecl *Method,
     = getOrCreateType(QualType(Method->getType()->getAs<FunctionProtoType>(),
                                0),
                       Unit);
-  
+
   // Add "this" pointer.
   llvm::DIArray Args = llvm::DICompositeType(FnTy).getTypeArray();
   assert (Args.getNumElements() && "Invalid number of arguments!");
@@ -946,14 +946,16 @@ CGDebugInfo::CreateCXXMemberFunction(const CXXMethodDecl *Method,
   }
   if (Method->hasPrototype())
     Flags |= llvm::DIDescriptor::FlagPrototyped;
-    
+
+  llvm::DIArray TParamsArray = CollectFunctionTemplateParams(Method, Unit);
   llvm::DISubprogram SP =
     DBuilder.createMethod(RecordTy, MethodName, MethodLinkageName, 
                           MethodDefUnit, MethodLine,
                           MethodTy, /*isLocalToUnit=*/false, 
                           /* isDefinition=*/ false,
                           Virtuality, VIndex, ContainingType,
-                          Flags, CGM.getLangOpts().Optimize);
+                          Flags, CGM.getLangOpts().Optimize, NULL,
+                          TParamsArray);
   
   SPCache[Method->getCanonicalDecl()] = llvm::WeakVH(SP);
 
@@ -967,14 +969,25 @@ void CGDebugInfo::
 CollectCXXMemberFunctions(const CXXRecordDecl *RD, llvm::DIFile Unit,
                           SmallVectorImpl<llvm::Value *> &EltTys,
                           llvm::DIType RecordTy) {
-  for(CXXRecordDecl::method_iterator I = RD->method_begin(),
-        E = RD->method_end(); I != E; ++I) {
-    const CXXMethodDecl *Method = *I;
-    
-    if (Method->isImplicit() && !Method->isUsed())
+
+  // Since we want more than just the individual member decls if we
+  // have templated functions iterate over every declaration to gather
+  // the functions.
+  for(DeclContext::decl_iterator I = RD->decls_begin(),
+        E = RD->decls_end(); I != E; ++I) {
+    Decl *D = *I;
+    if (D->isImplicit() && !D->isUsed())
       continue;
 
-    EltTys.push_back(CreateCXXMemberFunction(Method, Unit, RecordTy));
+    if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D))
+      EltTys.push_back(CreateCXXMemberFunction(Method, Unit, RecordTy));
+    else if (FunctionTemplateDecl *FTD = dyn_cast<FunctionTemplateDecl>(D))
+      for (FunctionTemplateDecl::spec_iterator SI = FTD->spec_begin(),
+            SE = FTD->spec_end(); SI != SE; ++SI) {
+        FunctionDecl *FD = *SI;
+        if (CXXMethodDecl *M = dyn_cast<CXXMethodDecl>(FD))
+          EltTys.push_back(CreateCXXMemberFunction(M, Unit, RecordTy));
+      }
   }
 }                                 
 
diff --git a/test/CodeGenCXX/debug-info-template-member.cpp b/test/CodeGenCXX/debug-info-template-member.cpp
new file mode 100644
index 0000000000..c272dd4dd2
--- /dev/null
+++ b/test/CodeGenCXX/debug-info-template-member.cpp
@@ -0,0 +1,21 @@
+// RUN: %clang_cc1 -emit-llvm -g -triple x86_64-apple-darwin %s -o - | FileCheck %s
+
+class MyClass
+{
+public:
+    int add2(int j)
+    {
+        return add<2>(j);
+    }
+private:
+    template <int i> int add(int j)
+    {
+        return i + j;
+    }
+};
+
+MyClass m;
+
+// CHECK: metadata !{i32 {{.*}}, null, metadata !"MyClass", metadata {{.*}}, i32 {{.*}}, i64 8, i64 8, i32 0, i32 0, null, metadata [[C_MEM:.*]], i32 0, null, null} ; [ DW_TAG_class_type ]
+// CHECK: [[C_MEM]] = metadata !{metadata {{.*}}, metadata [[C_TEMP:.*]], metadata {{.*}}}
+// CHECK: [[C_TEMP]] = metadata !{i32 {{.*}}, i32 0, metadata {{.*}}, metadata !"add", metadata !"add", metadata !"_ZN7MyClass3addILi2EEEii", metadata {{.*}}