Refactor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100768 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AsmPrinter/DwarfDebug.cpp

@@ -2268,6 +2268,16 @@ bool DwarfDebug::extractScopeInformation() {
 
   CurrentFnDbgScope->fixInstructionMarkers(MIIndexMap);
 
+  populateDbgScopeInverseMaps();
+
+  return !DbgScopeMap.empty();
+}
+
+/// populateDbgScopeInverseMaps() - Populate DbgScopeBeginMap and
+/// DbgScopeEndMap. This maps are used to indentify debug scope started
+/// and ended by an instruction.
+void DwarfDebug::populateDbgScopeInverseMaps() {
+
   // Each scope has first instruction and last instruction to mark beginning
   // and end of a scope respectively. Create an inverse map that list scopes
   // starts (and ends) with an instruction. One instruction may start (or end)
@@ -2302,8 +2312,6 @@ bool DwarfDebug::extractScopeInformation() {
     else
       DbgScopeEndMap[MI].push_back(S);
   }
-
-  return !DbgScopeMap.empty();
 }
 
 /// beginFunction - Gather pre-function debug information.  Assumes being

lib/CodeGen/AsmPrinter/DwarfDebug.h

@@ -527,6 +527,11 @@ private:
     return Lines.size();
   }
   
+  /// populateDbgScopeInverseMaps() - Populate DbgScopeBeginMap and
+  /// DbgScopeEndMap. This maps are used to indentify debug scope started
+  /// and ended by an instruction.
+  void populateDbgScopeInverseMaps();
+
   /// extractScopeInformation - Scan machine instructions in this function
   /// and collect DbgScopes. Return true, if atleast one scope was found.
   bool extractScopeInformation();