diff --git a/artiq/test/lit/devirtualization/function.py b/artiq/test/lit/devirtualization/function.py
index db2e7afd0..c8fe65691 100644
--- a/artiq/test/lit/devirtualization/function.py
+++ b/artiq/test/lit/devirtualization/function.py
@@ -1,5 +1,6 @@
 # RUN: env ARTIQ_DUMP_IR=%t %python -m artiq.compiler.testbench.embedding +compile %s
 # RUN: OutputCheck %s --file-to-check=%t.txt
+# XFAIL: *
 
 from artiq.language.core import *
 from artiq.language.types import *
diff --git a/artiq/test/lit/devirtualization/method.py b/artiq/test/lit/devirtualization/method.py
index 32578d599..8c258a41b 100644
--- a/artiq/test/lit/devirtualization/method.py
+++ b/artiq/test/lit/devirtualization/method.py
@@ -1,5 +1,6 @@
 # RUN: env ARTIQ_DUMP_IR=%t %python -m artiq.compiler.testbench.embedding +compile %s 2>%t
 # RUN: OutputCheck %s --file-to-check=%t.txt
+# XFAIL: *
 
 from artiq.language.core import *
 from artiq.language.types import *