On 2/18/2010 4:54 PM, Joe Buck wrote:

But maybe I didn't ask the right question: can any x86 experts comment on
recently made x86 CPUs that would not function correctly with code
produced by --with-arch=i486?  Are there any?

All CPUs still in production are at least SSE3 capable, unless someone can come up with one of which I'm not aware. Intel compilers made the switch last year to requiring SSE2 capability for the host, as well as in the default target options, even for 32-bit. All x86_64 or X64 CPUs for which any compiler was produced had SSE2 capability, so it is required for those 64-bit targets.

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Tim Prince

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