diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h
index 166170b08e..5b1794188f 100644
--- a/include/exec/gen-icount.h
+++ b/include/exec/gen-icount.h
@@ -9,11 +9,9 @@ static TCGOp *icount_start_insn;
 
 static inline void gen_io_start(void)
 {
-    TCGv_i32 tmp = tcg_const_i32(1);
-    tcg_gen_st_i32(tmp, cpu_env,
+    tcg_gen_st_i32(tcg_constant_i32(1), cpu_env,
                    offsetof(ArchCPU, parent_obj.can_do_io) -
                    offsetof(ArchCPU, env));
-    tcg_temp_free_i32(tmp);
 }
 
 static inline void gen_tb_start(const TranslationBlock *tb)