diff --git a/kernel/loongarch64/axpby_lasx.S b/kernel/loongarch64/axpby_lasx.S
index 7a246ca5c..b5cf77dc4 100644
--- a/kernel/loongarch64/axpby_lasx.S
+++ b/kernel/loongarch64/axpby_lasx.S
@@ -139,9 +139,9 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     xvst VX1, Y, 4 * SIZE
 #else
     xvfmul.s VX0, VX0, VXA
-    addi.d  I, I, -1
     xvst VX0, Y, 0 * SIZE
 #endif
+    addi.d  I, I, -1
     addi.d X, X, 8 * SIZE
     addi.d Y, Y, 8 * SIZE
     blt $r0, I, .L112
@@ -288,6 +288,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     addi.d X, X, 8 * SIZE
     addi.d  I, I, -1
     blt $r0, I, .L121
+    move  Y, YY
     b .L997
     .align 3
 
@@ -334,6 +335,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     add.d YY, YY, INCY
     addi.d X, X, 8 * SIZE
     blt $r0, I, .L122
+    move  Y, YY
     b .L997
     .align 3
 
@@ -425,6 +427,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     add.d YY, YY, INCY
     addi.d  I, I, -1
     blt $r0, I, .L123
+    move  Y, YY
     b .L997
     .align 3
 
@@ -465,6 +468,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     add.d YY, YY, INCY
     addi.d  I, I, -1
     blt $r0, I, .L124
+    move  Y, YY
     b .L997
     .align 3
 
@@ -803,6 +807,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endif
     add.d YY, YY, INCY
     blt $r0, I, .L221
+    move  Y, YY
     b .L997
     .align 3
 
@@ -895,6 +900,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endif
     add.d YY, YY, INCY
     blt $r0, I, .L222
+    move  Y, YY
     b .L997
     .align 3
 
@@ -987,6 +993,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endif
     add.d YY, YY, INCY
     blt $r0, I, .L223
+    move  Y, YY
     b .L997
     .align 3
 
@@ -1027,6 +1034,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     add.d YY, YY, INCY
     addi.d  I, I, -1
     blt $r0, I, .L224
+    move  Y, YY
     b .L997
     .align 3
 
diff --git a/kernel/loongarch64/caxpby_lasx.S b/kernel/loongarch64/caxpby_lasx.S
index c5802092e..5f34f1380 100644
--- a/kernel/loongarch64/caxpby_lasx.S
+++ b/kernel/loongarch64/caxpby_lasx.S
@@ -176,13 +176,13 @@
     xvilvh.d VX3, x4, x3
     xvst VX2, Y, 0 * SIZE
     xvst VX3, Y, 4 * SIZE
-    addi.d X, Y, 8 * SIZE
+    addi.d Y, Y, 8 * SIZE
 #else
     xvilvl.w VX2, x4 ,x3
     xvilvh.w VX3, x4, x3
     xvst VX2, Y, 0 * SIZE
     xvst VX3, Y, 8 * SIZE
-    addi.d X, Y, 16 * SIZE
+    addi.d Y, Y, 16 * SIZE
 #endif
     addi.d  I, I, -1
     blt $r0, I, .L113
@@ -617,6 +617,7 @@
     xvstelm.d x4, YY, 1 * SIZE, 3
     add.d YY, YY, INCY
     blt $r0, I, .L222
+    move  Y, YY
     b .L997
     .align 3
 #else
@@ -691,6 +692,7 @@
     xvstelm.w x4, YY, 1 * SIZE, 7
     add.d YY, YY, INCY
     blt $r0, I, .L222
+    move  Y, YY
     b .L997
     .align 3
 #endif
@@ -1011,7 +1013,11 @@
 #endif
 
 .L997:
+#ifdef DOUBLE
+    andi I, N, 3
+#else
     andi I, N, 7
+#endif
     bge $r0, I, .L999
     .align 3