Date: Wed, 03 Mar 2010 19:09:26 +0200 From: keramida@freebsd.org (Giorgos Keramidas) To: Dan Naumov <dan.naumov@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Compiler Flags problem with core2 CPU Message-ID: <87fx4hfi2h.fsf@kobe.laptop> In-Reply-To: <cf9b1ee01003021326ja02110fjd91bc4977dd0c3cf@mail.gmail.com> (Dan Naumov's message of "Tue, 2 Mar 2010 23:26:20 %2B0200") References: <cf9b1ee01003021326ja02110fjd91bc4977dd0c3cf@mail.gmail.com>
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On Tue, 2 Mar 2010 23:26:20 +0200, Dan Naumov <dan.naumov@gmail.com> wrote: >>See the section "3.17.14 Intel 386 and AMD x86-64 Options" in the gcc >>Info manual. It contains a full list of the supported CPU-TYPE values >>for the -mtune=CPU-TYPE option. The -march=CPU-TYPE option accepts the >>same CPU types: >> >> `-march=CPU-TYPE' >> Generate instructions for the machine type CPU-TYPE. The >> choices for CPU-TYPE are the same as for `-mtune'. Moreover, >> specifying `-march=CPU-TYPE' implies `-mtune=CPU-TYPE'. > > Hello > Out of curiosity, what is the optimal "-march=" value to use for the > new Atom D510 CPU: http://ark.intel.com/Product.aspx?id=43098 ? I'm not sure. 'nocona' seems a pretty close match: _nocona_ Improved version of Intel Pentium4 CPU with 64-bit extensions, MMX, SSE, SSE2 and SSE3 instruction set support. Without actually trying -march=nocona on one of these I can't tell for sure if it is 'optimal' or not though.
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