diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index cba3c1a..b9db3ac 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -5544,10 +5544,17 @@ aarch64_rtx_costs (rtx x, int code, int outer ATTRIBUTE_UNUSED,
 
 	  /* Fall through.  */
 	case REG:
+	  if (VECTOR_MODE_P (GET_MODE (op0)) && REG_P (op1))
+	    {
+              /* The cost is 1 per register copied.  */
+              int n_minus_1 = (GET_MODE_SIZE (GET_MODE (op0)) - 1)
+			      / GET_MODE_SIZE (V4SImode);
+              *cost = COSTS_N_INSNS (n_minus_1 + 1);
+	    }
 	  /* const0_rtx is in general free, but we will use an
 	     instruction to set a register to 0.  */
-          if (REG_P (op1) || op1 == const0_rtx)
-            {
+	  else if (REG_P (op1) || op1 == const0_rtx)
+	    {
               /* The cost is 1 per register copied.  */
               int n_minus_1 = (GET_MODE_SIZE (GET_MODE (op0)) - 1)
 			      / UNITS_PER_WORD;