The debugger sometimes lookup dynamically in the runtime to find ivar info of any Objective-C classes. It would be very helpful to debugger if the compiler encodes runtime version number in DWARF.

Add support for two additional DWARF attributes to encode Objective-C runtime version number.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64834 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/DebugInfo.h

@@ -118,9 +118,11 @@ namespace llvm {
     /// code generator accepts maximum one main compile unit per module. If a
     /// module does not contain any main compile unit then the code generator 
     /// will emit multiple compile units in the output object file.
+
     bool isMain() const                { return getUnsignedField(6); }
     bool isOptimized() const           { return getUnsignedField(7); }
     std::string getFlags() const       { return getStringField(8); }
+    unsigned getRunTimeVersion() const { return getUnsignedField(9); }
 
     /// Verify - Verify that a compile unit is well formed.
     bool Verify() const;
@@ -231,6 +233,7 @@ namespace llvm {
   public:
     explicit DICompositeType(GlobalVariable *GV);
     DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
+    unsigned getRunTimeLang() const { return getUnsignedField(11); }
 
     /// Verify - Verify that a composite type descriptor is well formed.
     bool Verify() const;
@@ -381,7 +384,8 @@ namespace llvm {
                                     const std::string &Producer,
                                     bool isMain = false,
                                     bool isOptimized = false,
-                                    const char *Flags = "");
+                                    const char *Flags = "",
+                                    unsigned RunTimeVer = 0);
 
     /// CreateEnumerator - Create a single enumerator value.
     DIEnumerator CreateEnumerator(const std::string &Name, uint64_t Val);
@@ -412,7 +416,8 @@ namespace llvm {
                                         uint64_t AlignInBits,
                                         uint64_t OffsetInBits, unsigned Flags,
                                         DIType DerivedFrom,
-                                        DIArray Elements);
+                                        DIArray Elements,
+                                        unsigned RunTimeLang = 0);
 
     /// CreateSubprogram - Create a new descriptor for the specified subprogram.
     /// See comments in DISubprogram for descriptions of these fields.