On 11/27/2016 08:50 AM, Thomas Koenig wrote:
Hello world,
here is another, much revised, update of the AVX-specific matmul patch.
The processor-specific switching is now done directly, using the
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+/* Put exhaustive list of possible architectures here here, ORed together. */
Performs as expected on my AMD machines. We can still improve peak performance
on these by about 7%. To clarify, these chips require -mavx -mprefer-avx128. So
what we need to do is sort out which AMD CPUs need this adjustment with AVX
registers. (A later patch)
I would like to suggest that rather than matmul_internal.m4 to maybe name this
file matmul_base.m4, but not critical.
Need a libgcc person for the changes to the cpuinfo items.
The libgfortran portions look OK.
Jerry
