Date: Tue, 13 Mar 2012 19:18:34 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r232933 - head/sys/conf Message-ID: <201203131918.q2DJIYBA058647@svn.freebsd.org>
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Author: dim Date: Tue Mar 13 19:18:34 2012 New Revision: 232933 URL: http://svn.freebsd.org/changeset/base/232933 Log: Update comments and CFLAGS in sys/conf/kern.mk, introduced in r221879, to match reality: clang does _not_ disable SSE automatically when -mno-mmx is used, you have to specify -mno-sse explicitly. Note this was the case even before r232894, which only makes a change in the 'positive' flag case; e.g. when you specify -msse, MMX gets enabled too. MFC after: 1 week Modified: head/sys/conf/kern.mk Modified: head/sys/conf/kern.mk ============================================================================== --- head/sys/conf/kern.mk Tue Mar 13 18:59:19 2012 (r232932) +++ head/sys/conf/kern.mk Tue Mar 13 19:18:34 2012 (r232933) @@ -46,16 +46,16 @@ CWARNEXTRA?= -Wno-error-tautological-com # Setting -mno-sse implies -mno-sse2, -mno-sse3 and -mno-ssse3 # # clang: -# Setting -mno-mmx implies -mno-3dnow, -mno-3dnowa, -mno-sse, -mno-sse2, -# -mno-sse3, -mno-ssse3, -mno-sse41 and -mno-sse42 +# Setting -mno-mmx implies -mno-3dnow and -mno-3dnowa +# Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3, -mno-sse41 and -mno-sse42 # .if ${MACHINE_CPUARCH} == "i386" .if ${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang" -CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2 -mno-sse +CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2 .else CFLAGS+= -mno-aes -mno-avx .endif -CFLAGS+= -mno-mmx -msoft-float +CFLAGS+= -mno-mmx -mno-sse -msoft-float INLINE_LIMIT?= 8000 .endif @@ -93,17 +93,15 @@ INLINE_LIMIT?= 15000 # Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3 and -mfpmath=387 # # clang: -# Setting -mno-mmx implies -mno-3dnow, -mno-3dnowa, -mno-sse, -mno-sse2, -# -mno-sse3, -mno-ssse3, -mno-sse41 and -mno-sse42 +# Setting -mno-mmx implies -mno-3dnow and -mno-3dnowa +# Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3, -mno-sse41 and -mno-sse42 # (-mfpmath= is not supported) # .if ${MACHINE_CPUARCH} == "amd64" -.if ${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang" -CFLAGS+= -mno-sse -.else +.if ${MK_CLANG_IS_CC} != "no" || ${CC:T:Mclang} == "clang" CFLAGS+= -mno-aes -mno-avx .endif -CFLAGS+= -mcmodel=kernel -mno-red-zone -mno-mmx -msoft-float \ +CFLAGS+= -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -msoft-float \ -fno-asynchronous-unwind-tables INLINE_LIMIT?= 8000 .endif
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