[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/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S
index 7173ba98f427..3f131129d1c1 100644
--- a/arch/powerpc/lib/memcpy_64.S
+++ b/arch/powerpc/lib/memcpy_64.S
@@ -12,7 +12,7 @@
         .align  7
 _GLOBAL(memcpy)
         std     r3,48(r1)       /* save destination pointer for return value */
-        mtcrf   0x01,r5
+        PPC_MTOCRF      0x01,r5
         cmpldi  cr1,r5,16
         neg     r6,r3           # LS 3 bits = # bytes to 8-byte dest bdry
         andi.   r6,r6,7
@@ -128,7 +128,7 @@ _GLOBAL(memcpy)
         b       .Ldo_tail
 
 .Ldst_unaligned:
-        mtcrf   0x01,r6         # put #bytes to 8B bdry into cr7
+        PPC_MTOCRF      0x01,r6         # put #bytes to 8B bdry into cr7
         subf    r5,r6,r5
         li      r7,0
         cmpldi  r1,r5,16
@@ -143,7 +143,7 @@ _GLOBAL(memcpy)
 2:      bf      cr7*4+1,3f
         lwzx    r0,r7,r4
         stwx    r0,r7,r3
-3:      mtcrf   0x01,r5
+3:      PPC_MTOCRF      0x01,r5
         add     r4,r6,r4
         add     r3,r6,r3
         b       .Ldst_aligned