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On Sun, May 14, 2017 at 11:05:14AM +0200, Helmut Jarausch wrote |
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> Many thanks for your hints! |
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> |
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> On 05/14/2017 07:13:05 AM, Walter Dnes wrote: |
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> > Out of sheer curiousity, what |
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> > does gcc report as your native cpu when you run... |
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> > |
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> > gcc -c -Q -march=native --help=target | grep march= |
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> |
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> -march=amdfam10 |
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|
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According to the GCC website... |
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https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/x86-Options.html#x86-Options |
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GCC 6.3.0 "-march=amdfam10" ("-march=native" on your machine) supports |
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MMX, SSE, SSE2, SSE3, SSE4A, 3DNow!, enhanced 3DNow!, and ABM. GCC |
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builds binaries to use these instructions where appropriate. |
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|
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When building for the machine that's doing the build, I always use |
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"-march=native". This gets the full available speedup, without having |
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to figure out what the exact cpu family is. |
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|
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-- |
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Walter Dnes <waltdnes@××××××××.org> |
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I don't run "desktop environments"; I run useful applications |
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