1 files changed, 38 insertions, 0 deletions
diff --git a/src/ir/boolean.h b/src/ir/boolean.h
new file mode 100644
index 000000000..58601c2ce
--- /dev/null
+++ b/src/ir/boolean.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2022 WebAssembly Community Group participants
+ *
+ * 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.
+ */
+
+#ifndef wasm_ir_boolean_h
+#define wasm_ir_boolean_h
+
+#include "wasm.h"
+
+namespace wasm::Properties {
+
+inline bool emitsBoolean(Expression* curr) {
+  if (auto* unary = curr->dynCast<Unary>()) {
+    return unary->isRelational();
+  } else if (auto* binary = curr->dynCast<Binary>()) {
+    return binary->isRelational();
+  } else if (curr->is<RefIs>() || curr->is<RefEq>() || curr->is<RefTest>() ||
+             curr->is<StringEq>()) {
+    return true;
+  }
+  return false;
+}
+
+} // namespace wasm::Properties
+
+#endif // wasm_ir_boolean_h