mips64: Fixed numpy CI failure

Author: XiWeiGu

kernel/mips64/scal.S

@@ -39,15 +39,16 @@
 #define ASSEMBLER
 #include "common.h"
 
-#define N	$4
+#define N	    $4
 
-#define X	$8
+#define X	    $8
 #define INCX	$9
 
-#define I	$2
+#define I	    $2
 #define TEMP	$3
 
-#define XX	$5
+#define XX	    $5
+#define DUMMY2  $6
 
 #define ALPHA	$f15
 
@@ -73,14 +74,14 @@
 	blez	N, .L999
 	dsll	INCX, INCX, BASE_SHIFT
 
-	CMPEQ	$fcc0, ALPHA, a1
-	NOP
+    CMPEQ	$fcc0,  ALPHA, a1
+    LDARG   DUMMY2, 8($sp)
 
-	bc1f	$fcc0, .L50
-	NOP
+    bc1f	$fcc0, .L50
+    dsll    DUMMY2, DUMMY2, BASE_SHIFT
 
-	bc1t	$fcc0, .L50
-	NOP
+    beq     DUMMY2, TEMP, .L50 // If dummy2 == 1, do not directly copy 0
+    NOP
 
 	bne	INCX, TEMP, .L20
 	dsra	I, N, 3