On Sat, Dec 17, 2011 at 3:07 PM, Walter Dnes <[email protected]> wrote: > -march= core2 > -mmmx [disabled] > -msse [disabled] > -msse2 [disabled] > -msse3 [disabled] > -mssse3 [disabled] > > It properly identified the cpu as "core2". But mmx, sse, sse2, sse3 > (aka pni), and ssse3 are disabled!!!
I think you may be misinterpreting that output. It's not telling you that MMX etc. are disabled, it's telling you that the /commandline options/ are disabled. Why? >From the GCC docs: "core2: Intel Core2 CPU with 64-bit extensions, MMX, SSE, SSE2, SSE3 and SSSE3 instruction set support." That means those features are implied by -march=core2, adding those commandline switches would be redundant.
