From 3ddb6f1c003bff156765a04dcfb42d68de0a0fa5 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 23 Dec 2004 21:09:54 -0800 Subject: [PATCH] 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). --- arch/i386/Makefile | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/i386/Makefile b/arch/i386/Makefile index b2f59309f5da..8be151e67258 100644 --- 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) -- 2.39.5