Merge pull request #831 from wernsaar/develop

updated sgemm- and strmm-kernel for POWER8

Author: wernsaar

kernel/power/sgemm_kernel_16x8_power8.S

@@ -26,11 +26,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
 /**************************************************************************************
-* 2016/03/18 Werner Saar (wernsaar@googlemail.com)
+* 2016/04/02 Werner Saar (wernsaar@googlemail.com)
 * 	 BLASTEST 		: OK
 * 	 CTEST			: OK
 * 	 TEST			: OK
-*	 LAPACK-TEST		: OK
+* 	 LAPACK-TEST		: OK
 **************************************************************************************/
 
 /*********************************************************************/
@@ -128,17 +128,18 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endif
 
 #define alpha_r vs30
+#define alpha_vr vs31
 
 #define o0	0
 
-#define TBUFFER r14
+#define BBUFFER r14
 #define o4	r15
 #define o12	r16
 #define o8	r17
 #define L	r18
 #define T1	r19
 #define KK	r20
-#define BB	r21
+#define BBO	r21
 #define	I	r22
 #define J	r23
 #define AO	r24
@@ -256,11 +257,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 	cmpwi	cr0, M, 0
-	ble	.L999_H1
+	ble	L999_H1
 	cmpwi	cr0, N, 0
-	ble	.L999_H1
+	ble	L999_H1
 	cmpwi	cr0, K, 0
-	ble	.L999_H1
+	ble	L999_H1
 
 	li	PRE, 256 
 	li	o4 , 4
@@ -269,18 +270,25 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	li	o16, 16
 	li	o32, 32
 	li	o48, 48
-	addi	TBUFFER, SP, 320
+
+	li	T1, 256
+	slwi	T1, T1, 9		// 131072
+	sub	BBUFFER, A, T1		// temp buffer for B unrolled
 
         addi    T1, SP, 300
-        stfs    f1, 0(T1)
+        stxsspx    f1, o0 , T1
+        stxsspx    f1, o4 , T1
+        stxsspx    f1, o8 , T1
+        stxsspx    f1, o12 , T1
 
-        lxsspx  alpha_r, 0, T1
+	lxsspx	   alpha_r,  o0, T1
+        lxvw4x     alpha_vr, o0, T1
 
 
 
 #include "sgemm_logic_16x8_power8.S"
 
-.L999:
+L999:
 	addi	r3, 0, 0
 
 	lfd	f14,    0(SP)