Debug Info: Move isSubprogramContext from DebugInfo to DwarfDebug.

This helper function needs the type identifier map when we switch
DIType::getContext to return DIScopeRef instead of DIScope.

Since isSubprogramContext is used by DwarfDebug only, We move it to DwarfDebug
to have easy access to the map.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190325 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 18 insertions, 1 deletions

diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 15bfb7e543..6ec68834cf 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -1435,7 +1435,7 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
     // Do not create specification DIE if context is either compile unit
     // or a subprogram.
     if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
-        !GVContext.isFile() && !isSubprogramContext(GVContext)) {
+        !GVContext.isFile() && !DD->isSubprogramContext(GVContext)) {
       // Create specification DIE.
       VariableSpecDIE = new DIE(dwarf::DW_TAG_variable);
       addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 885d4ba5cd..bdcb813e22 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -332,6 +332,19 @@ static void addSubprogramNames(CompileUnit *TheCU, DISubprogram SP,
   }
 }
 
+/// isSubprogramContext - Return true if Context is either a subprogram
+/// or another context nested inside a subprogram.
+bool DwarfDebug::isSubprogramContext(const MDNode *Context) {
+  if (!Context)
+    return false;
+  DIDescriptor D(Context);
+  if (D.isSubprogram())
+    return true;
+  if (D.isType())
+    return isSubprogramContext(DIType(Context).getContext());
+  return false;
+}
+
 // Find DIE for the given subprogram and attach appropriate DW_AT_low_pc
 // and DW_AT_high_pc attributes. If there are global variables in this
 // scope then create and insert DIEs for these variables.
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 5ccaf0fa48..f8c27d950e 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -686,6 +686,10 @@ public:
   /// Find the MDNode for the given scope reference.
   DIScope resolve(DIScopeRef SRef) const;
 
+  /// isSubprogramContext - Return true if Context is either a subprogram
+  /// or another context nested inside a subprogram.
+  bool isSubprogramContext(const MDNode *Context);
+
 };
 } // End of namespace llvm