oppc/code: silence unused insn

diff --git a/src/openpower/oppc/pc_code.py b/src/openpower/oppc/pc_code.py
index 4a396e21d41e7ed951a5eb3cc4d0c86aa181ea8b..8f1b771e663ca67e889b3102aecec47b14c3650e 100644 (file)
--- a/src/openpower/oppc/pc_code.py
+++ b/src/openpower/oppc/pc_code.py
@@ -54,6 +54,8 @@ class CodeVisitor(pc_util.Visitor):
             self.__code[self.__header].emit(stmt=f"struct oppc_value {var};")
         for var in filter(lambda var: var not in operands, sorted(self.__vars)):
             self.__code[self.__header].emit(stmt=f"struct oppc_value {var};")
+        if not operands:
+            self.__code[self.__header].emit("(void)insn;")
         self.__code[self.__header].emit()
 
         for operand in insn.dynamic_operands: