diff options
| author | Olof Johansson <olof@lixom.net> | 2007-03-22 09:34:13 -0500 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-04-13 03:55:13 +1000 |
| commit | 3467bfd340f9ad48f3732415533a2e9c18240b62 (patch) | |
| tree | 91f57918199d9508868aa0889a5b2aca4cc1da13 /arch/powerpc/lib/mem_64.S | |
| parent | 569975591c5530fdc9c7a3c45122e5e46f075a74 (diff) | |
[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>
Diffstat (limited to 'arch/powerpc/lib/mem_64.S')
| -rw-r--r-- | arch/powerpc/lib/mem_64.S | 6 |
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) |