Add a line number for the scope of the function (starting at the first

brace) so that we get more accurate line number information about the
declaration of a given function and the line where the function
first starts.

Part of rdar://11026482

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153916 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/DIBuilder.h

@@ -445,6 +445,7 @@ namespace llvm {
     /// @param Ty            Function type.
     /// @param isLocalToUnit True if this function is not externally visible..
     /// @param isDefinition  True if this is a function definition.
+    /// @param ScopeLine     Set to the beginning of the scope this starts
     /// @param Flags         e.g. is this function prototyped or not.
     ///                      This flags are used to emit dwarf attributes.
     /// @param isOptimized   True if optimization is ON.
@@ -455,6 +456,7 @@ namespace llvm {
                                 DIFile File, unsigned LineNo,
                                 DIType Ty, bool isLocalToUnit,
                                 bool isDefinition,
+                                unsigned ScopeLine,
                                 unsigned Flags = 0,
                                 bool isOptimized = false,
                                 Function *Fn = 0,

include/llvm/Analysis/DebugInfo.h

@@ -519,6 +519,7 @@ namespace llvm {
     DICompositeType getContainingType() const {
       return getFieldAs<DICompositeType>(13);
     }
+
     unsigned isArtificial() const    { 
       if (getVersion() <= llvm::LLVMDebugVersion8)
         return getUnsignedField(14); 
@@ -567,6 +568,11 @@ namespace llvm {
       return getFieldAs<DIFile>(6).getDirectory(); 
     }
 
+    /// getScopeLineNumber - Get the beginning of the scope of the
+    /// function, not necessarily where the name of the program
+    /// starts.
+    unsigned getScopeLineNumber() const { return getUnsignedField(20); }
+
     /// Verify - Verify that a subprogram descriptor is well formed.
     bool Verify() const;