Add support for DW_TAG_unspecified_parameters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115833 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/DebugInfo.h

@@ -119,6 +119,7 @@ namespace llvm {
     bool isEnumerator() const;
     bool isType() const;
     bool isGlobal() const;
+    bool isUnspecifiedParameter() const;
   };
 
   /// DISubrange - This is used to represent ranges, for array bounds.
@@ -626,6 +627,10 @@ namespace llvm {
     /// implicitly uniques the values returned.
     DISubrange GetOrCreateSubrange(int64_t Lo, int64_t Hi);
 
+    /// CreateUnspecifiedParameter - Create unspeicified type descriptor
+    /// for a subroutine type.
+    DIDescriptor CreateUnspecifiedParameter();
+
     /// CreateCompileUnit - Create a new descriptor for the specified compile
     /// unit.
     DICompileUnit CreateCompileUnit(unsigned LangID,