[klibc] ppc64: build with -mcmodel=small
If available, use -mcmodel=small. klibc is small enough that we
should never hit the limits of the small memory model.
This produces better code, for example:
000000000f003890 <.strcasecmp>:
f003890: 3c a2 ff fe addis r5,r2,-2
...
f003898: 38 c5 23 58 addi r6,r5,9048
...
f0038ac: 7d 46 50 ae lbzx r10,r6,r10
vs:
000000000f0037c4 <.strcasecmp>:
f0037c4: e8 c2 81 48 ld r6,-32440(r2)
f0037dc: 7d 46 50 ae lbzx r10,r6,r10
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/usr/klibc/arch/ppc64/MCONFIG b/usr/klibc/arch/ppc64/MCONFIG
index 0294c44..1331e05 100644
--- a/usr/klibc/arch/ppc64/MCONFIG
+++ b/usr/klibc/arch/ppc64/MCONFIG
@@ -9,6 +9,7 @@
KLIBCARCHREQFLAGS = -m64
KLIBCARCHREQFLAGS += $(call cc-option, -mcall-aixdesc, )
+KLIBCARCHREQFLAGS += $(call cc-option, -mcmodel=small, )
KLIBCOPTFLAGS += -Os
KLIBCBITSIZE = 64
