Don't use "-march=pentium3" for gcc tuning.

rth tells me that some versions of gcc may end up using the
SSE registers for data movement when you do that.

Use "-march=i686 -mtune=xxxx" instead.

(We do the same thing for march=pentium2/4 too, just for
consistency).

diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index b2f59309f5dab3a9e87a7c7942b4fd98b6a36b34..8be151e67258722aa4940aaedd381061edea04b6 100644 (file)
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -32,17 +32,17 @@ cflags-$(CONFIG_M586)               += -march=i586
 cflags-$(CONFIG_M586TSC)       += -march=i586
 cflags-$(CONFIG_M586MMX)       += $(call cc-option,-march=pentium-mmx,-march=i586)
 cflags-$(CONFIG_M686)          += -march=i686
-cflags-$(CONFIG_MPENTIUMII)    += $(call cc-option,-march=pentium2,-march=i686)
-cflags-$(CONFIG_MPENTIUMIII)   += $(call cc-option,-march=pentium3,-march=i686)
-cflags-$(CONFIG_MPENTIUMM)     += $(call cc-option,-march=pentium3,-march=i686)
-cflags-$(CONFIG_MPENTIUM4)     += $(call cc-option,-march=pentium4,-march=i686)
+cflags-$(CONFIG_MPENTIUMII)    += -march=i686 $(call cc-option,-mtune=pentium2)
+cflags-$(CONFIG_MPENTIUMIII)   += -march=i686 $(call cc-option,-mtune=pentium3)
+cflags-$(CONFIG_MPENTIUMM)     += -march=i686 $(call cc-option,-mtune=pentium3)
+cflags-$(CONFIG_MPENTIUM4)     += -march=i686 $(call cc-option,-mtune=pentium4)
 cflags-$(CONFIG_MK6)           += -march=k6
 # Please note, that patches that add -march=athlon-xp and friends are pointless.
 # They make zero difference whatsosever to performance at this time.
 cflags-$(CONFIG_MK7)           += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)
 cflags-$(CONFIG_MK8)           += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4))
 cflags-$(CONFIG_MCRUSOE)       += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
-cflags-$(CONFIG_MEFFICEON)     += $(call cc-option,-march=pentium3,-march=i686) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+cflags-$(CONFIG_MEFFICEON)     += -march=i686 $(call cc-option,-mtune=pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
 cflags-$(CONFIG_MWINCHIPC6)    += $(call cc-option,-march=winchip-c6,-march=i586)
 cflags-$(CONFIG_MWINCHIP2)     += $(call cc-option,-march=winchip2,-march=i586)
 cflags-$(CONFIG_MWINCHIP3D)    += $(call cc-option,-march=winchip2,-march=i586)