Upgrading gcc arch ?

[John Paul Adrian Glaubitz]

On 10/20/2017 10:19 AM, Laurent Bourgès wrote:
> I wonder if it is time to compile c/c++ code with a more recent cpu
> architecture (x86-64 is quite old: only SSE ?) to take benefit of
> performance optimizations offered by recent CPU and compilers (AVX...).

Only if it's possible to make use of these features during runtime as
it's being done on SPARC.

> Of course that means such builds would be specific to a CPU class and that
> will require build changes to make multiple flavors depending on the CPU
> classes ...

No, if this a compile time option, this is an absolute no go. It would
be absolutely crazy to break compatibility with such widely available
hardware with a piece of software which has one of the largest installation
bases world wide.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913