Index: testing/arch/ppc/Makefile
===================================================================
--- testing.orig/arch/ppc/Makefile	2005-11-16 13:31:24.000000000 -0200
+++ testing/arch/ppc/Makefile	2005-11-16 13:40:15.000000000 -0200
@@ -36,6 +36,16 @@
 CFLAGS		+= -mstring
 endif
 
+cpu-opt-$(CONFIG_6xx)		+= -mcpu=750 -mtune=7450
+cpu-opt-$(CONFIG_40x)		+= -mcpu=405
+cpu-opt-$(CONFIG_44x)		+= -mcpu=440
+cpu-opt-$(CONFIG_POWER3)	+= -mcpu=power3
+cpu-opt-$(CONFIG_POWER4)	+= -mcpu=power4
+cpu-opt-$(CONFIG_8xx)		+= -mcpu=860
+cpu-opt-$(CONFIG_E500)		+= -mcpu=8540
+
+CFLAGS += $(cpu-opt-y)
+
 cpu-as-$(CONFIG_PPC64BRIDGE)	+= -Wa,-mppc64bridge
 cpu-as-$(CONFIG_4xx)		+= -Wa,-m405
 cpu-as-$(CONFIG_6xx)		+= -Wa,-maltivec