diff --git a/ecmascript_plugin_options.yaml b/ecmascript_plugin_options.yaml
index da7f8e684a7481b080ff8ebde451fb990880bc24..9ef486b7b86626e3a26394a02f3b3332508ce698 100644
--- a/ecmascript_plugin_options.yaml
+++ b/ecmascript_plugin_options.yaml
@@ -83,6 +83,8 @@
       irtoc_files:
         - plugins_interpreter_handlers: plugins/ecmascript/irtoc_scripts/interpreter_handlers.irt
         - plugins_main_loop: plugins/ecmascript/irtoc_scripts/interpreter_main_loop.irt
+      regmasks_defines:
+        - irtoc_optimized_regmask: plugins/ecmascript/libpandabase/regmask.inl
       logger:
         components:
           - name: ecmascript
diff --git a/libpandabase/regmask.inl b/libpandabase/regmask.inl
new file mode 100644
index 0000000000000000000000000000000000000000..26654ce7b39f7aa9a5207737edc9342e117fa085
--- /dev/null
+++ b/libpandabase/regmask.inl
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+constexpr size_t ECMA_FP_REGMASK = 0x00000300;
+regmask = ECMA_FP_REGMASK;