loongarch: Fixed {s/d/sc/dz}amin LSX opt

Author: XiWeiGu

kernel/loongarch64/amin_lsx.S

@@ -146,7 +146,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     add.d X, X, INCX
     vinsgr2vr.d VX1, t3, 0
     vinsgr2vr.d VX1, t4, 1
-    vfmaxa.d VM1, VX0, VX1
+    vfmina.d VM1, VX0, VX1
     ld.d t1, X, 0 * SIZE
     add.d X, X, INCX
     ld.d t2, X, 0 * SIZE
@@ -159,9 +159,9 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     add.d X, X, INCX
     vinsgr2vr.d VX1, t3, 0
     vinsgr2vr.d VX1, t4, 1
-    vfmaxa.d VM2, VX0, VX1
-    vfmaxa.d VM1, VM1, VM2
-    vfmaxa.d VM0, VM0, VM1
+    vfmina.d VM2, VX0, VX1
+    vfmina.d VM1, VM1, VM2
+    vfmina.d VM0, VM0, VM1
 #else
     ld.w t1, X, 0
     add.d X, X, INCX
@@ -187,8 +187,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     vinsgr2vr.w VX1, t2, 1
     vinsgr2vr.w VX1, t3, 2
     vinsgr2vr.w VX1, t4, 3
-    vfmaxa.s VM1, VX0, VX1
-    vfmaxa.s VM0, VM0, VM1
+    vfmina.s VM1, VX0, VX1
+    vfmina.s VM0, VM0, VM1
 #endif
     addi.d I, I, -1
     blt $r0, I, .L21

kernel/loongarch64/camin_lsx.S

@@ -186,7 +186,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     FABS t4, t4
     ADD t1, t1, t2
     ADD t3, t3, t4
-    FMIN s1, t1, t3
+    FMIN s2, t1, t3
     LD t1, X, 0 * SIZE
     LD t2, X, 1 * SIZE
     add.d X, X, INCX
@@ -214,13 +214,16 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     ADD t1, t1, t2
     ADD t3, t3, t4
     FMIN s4, t1, t3
+
+    FMIN s1, s1, s2
+    FMIN s3, s3, s4
+    FMIN a0, a0, s3
+    FMIN a0, a0, s1
     blt $r0, I, .L21
     .align 3
 
 .L22:
-    FMIN s1, s1, s2
-    FMIN s3, s3, s4
-    FMIN s1, s1, s3
+    MOV s1, a0
     .align 3
 
 .L23: //N<8