[mlir] Fix TypeID lookup in GDB pretty printers.

[csigg]

Summary

The TypeID instance was moved in D89153.

It wasn't caught that it broke MLIR pretty printers because pre-merge checks don't run check-debuginfo.

Avoid disabling all MLIR printers in case this happens again by catching the exception.

[stellaraccident]

I had no idea. Thanks!

mlir/utils/gdb-scripts/prettyprinters.py

class StorageTypeMap:
 
   def _init_map(self):
     """Lazy initialization  of self.map."""
     if self.map:
       return
     self.map = {}
     for type_name in self.type_names:
       concrete_type = gdb.lookup_type(type_name)
+      try:
         storage = gdb.parse_and_eval(
-          "&'mlir::TypeID::get<%s>()::instance'" % type_name)
+            "&'mlir::detail::TypeIDExported::get<%s>()::instance'" % type_name)
+      except gdb.error:
+        # Skip when TypeID instance cannot be found in current context.
+        continue
       if concrete_type and storage:
         self.map[int(storage)] = concrete_type
 
   def __getitem__(self, type_id):
     self._init_map()
     return self.map.get(int(type_id['storage']))