From 4305d758c4a13bc1c93748dc59c689554bb10a19 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Tue, 7 Jun 2022 19:27:18 -0500
Subject: [PATCH] Deprecate passing unevaluated arrays to compiled functions
---
arraycontext/impl/pytato/compile.py | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arraycontext/impl/pytato/compile.py b/arraycontext/impl/pytato/compile.py
index 129a2c4..a8da390 100644
--- a/arraycontext/impl/pytato/compile.py
+++ b/arraycontext/impl/pytato/compile.py
@@ -468,6 +468,14 @@ def _args_to_device_buffers(actx, input_id_to_name_in_program, arg_id_to_arg):
pass
elif isinstance(arg, pt.Array):
# got an array expression => evaluate it
+ from warnings import warn
+ warn(f"Argument array '{arg_id}' to a compiled function is "
+ "unevaluated. Evaluating just-in-time, at "
+ "considerable expense. This is deprecated and will stop "
+ "working in 2023. To avoid this warning, force evaluation "
+ "of all arguments via freeze/thaw.",
+ DeprecationWarning, stacklevel=4)
+
arg = actx.freeze(arg)
else:
raise NotImplementedError(type(arg))
--
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