need fence before scall for vector mm

diff --git a/benchmarks/mm/mm_main.c b/benchmarks/mm/mm_main.c
index 4fb1b1bfbcda73d1c6a9c9c8841e436f2a2f0960..1f4e28b30b200adcef80862514af2426bcba1d9a 100644 (file)
--- a/benchmarks/mm/mm_main.c
+++ b/benchmarks/mm/mm_main.c
@@ -55,6 +55,8 @@ void thread_entry(int cid, int nc)
     }
   }
 
+  asm volatile("fence");
+
   printf("C%d: reg block %dx%dx%d, cache block %dx%dx%d\n",
          cid, RBM, RBN, RBK, CBM, CBN, CBK);
   printf("C%d: %d instructions\n", cid, (int)(instret));