Get tensor data

Summary: Retrieve tensor data as a buffer (like executorch_program.buffer)

Differential Revision: D82061884

Author: lucylq

exir/program/_program.py

@@ -626,6 +626,23 @@ def buffer(self) -> bytes:
             self._buffer = bytes(self._get_pte_data())
         return self._buffer
 
+    @property
+    def tensor_data(self) -> Dict[str, bytes]:
+        """Returns the tensor data as a dictionary of filename to byte data.
+          
+        Returns:
+            Dict[str, bytes]: Dictionary mapping tensor data filenames to 
+                their byte content.
+            Returns empty dict if no tensor data is available.
+        """
+        if self._pte_data is None:
+            self._get_pte_data()  # This populates _tensor_data
+          
+        if self._tensor_data is None:
+            return {}
+          
+        return {filename: bytes(cord) for filename, cord in self._tensor_data.items()}
+
     @property
     def program(self) -> Program:
         return self._get_emitter_output().program