powerpc/8xx: Duplicate two insns instead of branching

Branching takes two cycles on MPC8xx. Lets duplicate the two instructions
and avoid the branching.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 1bdd7c13ddc1..fafff8dbd5d9 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -644,9 +644,11 @@ modified_instr:
 
         /* special handling for r10,r11 since these are modified already */
 153:    mfspr   r11, SPRN_SPRG_SCRATCH1 /* load r11 from SPRN_SPRG_SCRATCH1 */
-        b       155f
+        add     r10, r10, r11   /* add it */
+        mfctr   r11             /* restore r11 */
+        b       151b
 154:    mfspr   r11, SPRN_SPRG_SCRATCH0 /* load r10 from SPRN_SPRG_SCRATCH0 */
-155:    add     r10, r10, r11   /* add it */
+        add     r10, r10, r11   /* add it */
         mfctr   r11             /* restore r11 */
         b       151b
 #endif