caching patch

caching.py

diff --git a/numba/core/caching.py b/numba/core/caching.py
index a830524acea..1b7eac4ae86 100644
--- a/numba/core/caching.py
+++ b/numba/core/caching.py
@@ -793,7 +793,7 @@ def make_library_cache(prefix):

 # list of types for which the cache invalidation is extended to their
 # definitions
-dep_types = (types.Dispatcher, types.Function)
+dep_types = (types.Dispatcher, types.Function, types.BoundFunction)


 def get_function_dependencies(overload: OverloadData
@@ -843,7 +843,7 @@ def get_deps_info(fc_ty: pt.Union[types.Dispatcher, types.Function], sig
     if isinstance(fc_ty, types.Dispatcher):
         dispatcher = fc_ty.dispatcher
         deps_stamps = dispatcher.cache_deps_info(sig)
-    elif isinstance(fc_ty, types.Function):
+    elif isinstance(fc_ty, (types.Function, types.BoundFunction)):
         if hasattr(fc_ty.typing_key, "_dispatcher"):
             # this case captures DUFuncs and GUFuncs
             dispatcher = fc_ty.key[0]._dispatcher
@@ -853,10 +853,17 @@ def get_deps_info(fc_ty: pt.Union[types.Dispatcher, types.Function], sig
             # overload
             # If the template does not have `get_cache_deps_info` it might be
             # a generated class for a global value in Registry.register_global
-            deps_stamps = [tmplt.get_cache_deps_info(tmplt, sig, get_function_dependencies)
-                           for tmplt in fc_ty.templates
-                           if hasattr(tmplt, 'get_cache_deps_info')]
-            deps_stamps = {k: v for d in deps_stamps for k, v in d.items()}
+            if isinstance(fc_ty, types.Function):
+                deps_stamps = [tmplt.get_cache_deps_info(tmplt, sig, get_function_dependencies)
+                            for tmplt in fc_ty.templates
+                            if hasattr(tmplt, 'get_cache_deps_info')]
+                deps_stamps = {k: v for d in deps_stamps for k, v in d.items()}
+            elif isinstance(fc_ty, types.BoundFunction):
+                tmplt = fc_ty.template
+                deps_stamps = []
+                if hasattr(tmplt, 'get_cache_deps_info'):
+                    deps_stamps.append(tmplt.get_cache_deps_info(tmplt, sig, get_function_dependencies))
+                deps_stamps = {k: v for d in deps_stamps for k, v in d.items()}
     return deps_stamps


@@ -877,7 +884,7 @@ def get_impl_filenames(fc_ty: pt.Union[types.Dispatcher, types.Function]
         dispatcher = fc_ty.dispatcher
         py_func = dispatcher.py_func
         py_files = [py_func.__code__.co_filename]
-    elif isinstance(fc_ty, types.Function):
+    elif isinstance(fc_ty, (types.Function, types.BoundFunction)):
         if hasattr(fc_ty.typing_key, "_dispatcher"):
             # this case captures DUFuncs and GUFuncs
             dispatcher = fc_ty.key[0]._dispatcher
@@ -886,8 +893,13 @@ def get_impl_filenames(fc_ty: pt.Union[types.Dispatcher, types.Function]
         else:
             # a type of Function with a dispatcher associated. Probably an
             # overload
-            py_files = [tmplt.get_template_info(tmplt)["filename"]
-                        for tmplt in fc_ty.templates]
+            if isinstance(fc_ty, types.Function):
+                py_files = [tmplt.get_template_info(tmplt)["filename"]
+                            for tmplt in fc_ty.templates]
+            elif isinstance(fc_ty, types.BoundFunction):
+                tmplt = fc_ty.template
+                info = tmplt.get_template_info(tmplt)
+                py_files = [info["filename"], ]

             # the base path depends on what tmplt.get_template_info is doing
             # in this case, the filenames returned by get_template_info are