Hi-- On Aug 25, 2011, at 5:56 PM, Pegasus Mc Cleaft wrote: > I am running FreeBSD 9.0-BETA1 r225125 compiled with LLVM on a Xeon > processor (CPUTYPE=core2 and CFLAGS= -mmmx -msse -msse2 -msse3 -O2 > -fno-strict-aliasing -pipe) The FreeBSD kernel doesn't use MMX or SSE by explicit design choice. See sys/conf/kern.mk: # [ ... ] Explicitly prohibit the use of SSE and other SIMD # operations inside the kernel itself. These operations are exclusively # reserved for user applications. # .if ${MACHINE_ARCH} == "i386" && ${CC} != "icc" CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2 \ -mno-mmx -mno-3dnow -mno-sse -mno-sse2 INLINE_LIMIT?= 8000 .endif Trying to override the default compiler flags to force it to use MMX/SSE is simply not going to work. Regards, -- -ChuckReceived on Fri Aug 26 2011 - 04:41:58 UTC
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