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Re: allowed uses of non-baseline CPU extensions

On Thu, 2017-10-05 at 03:23 +0100, Ben Hutchings wrote:
> This should be unnecessary since gcc 6, as you can easily tell the
> compiler to generate and select between multiple versions of the
> functions.  See <https://lwn.net/Articles/691932/>.

Having to identify interesting functions and add compiler-specific
definitions to them isn't that easy.  The real easy and lazy option
would be to have a compiler flag to enable it for entire translation
units (probably at the expense of binary size).