Date: Thu, 10 Jun 2010 12:31:16 -0700 From: Matthew Jacob <mj@feral.com> To: freebsd-current@freebsd.org Subject: Re: kernel make noise with clang suppression Message-ID: <4C113D84.30301@feral.com> In-Reply-To: <861vcesn3u.fsf@gmail.com> References: <4C113167.8040205@feral.com> <861vcesn3u.fsf@gmail.com>
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On 6/10/2010 12:29 PM, Anonymous wrote:
> Matthew Jacob<mj@feral.com> writes:
>
>
>> Comments? (yes, I know -fformat-extensions have just been added...)
>>
>>
>>
>> diff -r ea5e09d013e7 sys/conf/kern.mk
>> --- a/sys/conf/kern.mk Thu Jun 10 07:40:51 2010 -0700
>> +++ b/sys/conf/kern.mk Thu Jun 10 11:35:50 2010 -0700
>> @@ -63,9 +67,15 @@
>> # reserved for user applications.
>> #
>> .if ${MACHINE_ARCH} == "amd64"
>> +.if ${CC} == "clang"
>> +CFLAGS+= -mcmodel=kernel -mno-red-zone \
>> + -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
>>
> Shouldn't be there all supported -msse* by clang? I for one have ssse3
> and sse4.1 that are not supported by basegcc.
>
SSE instructions are disabled in the kernel.
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