bugfix for sgemv_n_4.c

kernel/x86_64/KERNEL.BULLDOZER

@@ -10,7 +10,7 @@ DSYMV_L_KERNEL = dsymv_L.c
 SSYMV_U_KERNEL = ssymv_U.c
 SSYMV_L_KERNEL = ssymv_L.c
 
-SGEMVNKERNEL = sgemv_n.c
+SGEMVNKERNEL = sgemv_n_4.c
 SGEMVTKERNEL = sgemv_t_4.c
 
 ZGEMVNKERNEL = zgemv_n_dup.S

kernel/x86_64/sgemv_n_4.c

@@ -185,8 +185,17 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLO
 
 	ybuffer = buffer;
 	
-	n1 = n  >> 3 ;
-	n2 = n  &  7  ;
+        if ( inc_x == 1 )
+	{
+		n1 = n >> 3 ;
+		n2 = n &  7 ;
+	}
+	else
+	{
+		n1 = n >> 2 ;
+		n2 = n &  3 ;
+
+	}
 	
         m3 = m & 3  ;
         m1 = m & -4 ;
@@ -258,32 +267,6 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLO
 		{
 
 			for( i = 0; i < n1 ; i++)
-			{
-				xbuffer[0] = x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[1] =  x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[2] =  x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[3] = x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[4] = x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[5] =  x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[6] =  x_ptr[0];
-				x_ptr += inc_x;	
-				xbuffer[7] = x_ptr[0];
-				x_ptr += inc_x;	
-				sgemv_kernel_4x8(NB,ap,x_ptr,ybuffer,lda4);
-				ap[0] += lda8; 
-				ap[1] += lda8; 
-				ap[2] += lda8; 
-				ap[3] += lda8; 
-				a_ptr += lda8;
-			}
-
-			if ( n2 & 4 )
 			{
 				xbuffer[0] = x_ptr[0];
 				x_ptr += inc_x;	
@@ -301,7 +284,7 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLO
 				a_ptr += lda4;
 			}
 
-			for( i = 0; i < ( n2 & 3) ; i++)
+			for( i = 0; i < n2 ; i++)
 			{
 				xbuffer[0] = x_ptr[0];
 				x_ptr += inc_x;