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Date:      Sat, 17 Nov 2007 12:14:46 +0100
From:      Marc Olzheim <marcolz@stack.nl>
To:        freebsd-stable@freebsd.org
Cc:        Marc Olzheim <marcolz@stack.nl>
Subject:   FreeBSD 7.0-BETA2 /usr/src/sys/conf/kern.mk
Message-ID:  <20071117111446.GA24272@ilse.net>

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For the MACHINE_ARCH == "amd64" & ${CC} != "icc" case,
the -mno-sse3 flag that *is* set for MACHINE_ARCH == "i386", is not set.

I don't think the current gcc actually uses sse3 anywhere in the kernel
compile, as my kernels are working as normal, but for the sake of
completeness, I suggest the attached patch. (For CURRENT as well as
RELENG_7)

Marc

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--- /usr/src/sys/conf/kern.mk.orig	2007-05-24 21:53:42.000000000 +0000
+++ /usr/src/sys/conf/kern.mk	2007-11-17 12:10:28.000000000 +0000
@@ -70,7 +70,7 @@
 #
 .if ${MACHINE_ARCH} == "amd64"
 CFLAGS+=	-mcmodel=kernel -mno-red-zone \
-		-mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow \
+		-mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
 		-msoft-float -fno-asynchronous-unwind-tables
 INLINE_LIMIT?=	8000
 .endif

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