x86-64 GCC CPU target options

Sam Rawlins sam.rawlins at gmail.com
Sun Jun 2 15:12:13 CEST 2013

Hi Cameron,

If you are interested, while you are waiting for a response, it is very
easy to run the

On Sun, Jun 2, 2013 at 1:31 AM, Cameron Gutman <aicommander at gmail.com>wrote:

> I noticed that GMP 5.1.2 doesn't use the newer GCC -march and -mtune
> targets for Sandy Bridge (corei7-avx) and Haswell (core-avx2). Is this
> because configure.ac just hasn't been updated or is there another reason?
> Also, would it be worth splitting Ivy Bridge out of the coreisbr group so
> we can use the core-avx-i GCC target?
> I've tested a modified configure.ac that uses corei7-avx on an Ivy Bridge
> system (recognized as coreisbr). It passes all the tests in make check. I
> haven't done any major performance tests yet though.
> Thanks,
> Cameron
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Sam Rawlins

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