Add methods to instructions to retrieve metadata and determine if metadata exists for the instruction.

llvm/core.py

@@ -1689,6 +1689,12 @@ class Instruction(User):
     def set_metadata(self, kind, metadata):
         self._ptr.setMetadata(kind, metadata._ptr)
         
+    def has_metadata(self):
+        return self._ptr.hasMetadata()
+
+    def get_metadata(self, kind):
+        return self._ptr.getMetadata(kind)
+
     @property
     def opcode(self):
         return self._ptr.getOpcode()