[POWERPC] Use mtocrf instruction in asm when CONFIG_POWER4_ONLY=y

mtocrf is a faster single-field mtcrf (move to condition register
fields) instruction available in POWER4 and later processors.  It can
make quite a difference in performance on some implementations, so use
it for CONFIG_POWER4_ONLY builds.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/powerpc/lib/mem_64.S b/arch/powerpc/lib/mem_64.S
index 68df20283ff5..11ce045e21fd 100644
--- a/arch/powerpc/lib/mem_64.S
+++ b/arch/powerpc/lib/mem_64.S
@@ -19,7 +19,7 @@ _GLOBAL(memset)
         rlwimi  r4,r4,16,0,15
         cmplw   cr1,r5,r0               /* do we get that far? */
         rldimi  r4,r4,32,0
-        mtcrf   1,r0
+        PPC_MTOCRF      1,r0
         mr      r6,r3
         blt     cr1,8f
         beq+    3f                      /* if already 8-byte aligned */
@@ -49,7 +49,7 @@ _GLOBAL(memset)
         bdnz    4b
 5:      srwi.   r0,r5,3
         clrlwi  r5,r5,29
-        mtcrf   1,r0
+        PPC_MTOCRF      1,r0
         beq     8f
         bf      29,6f
         std     r4,0(r6)
@@ -65,7 +65,7 @@ _GLOBAL(memset)
         std     r4,0(r6)
         addi    r6,r6,8
 8:      cmpwi   r5,0
-        mtcrf   1,r5
+        PPC_MTOCRF      1,r5
         beqlr+
         bf      29,9f
         stw     r4,0(r6)