On 08/31/2017 09:45 PM, David Woodhouse wrote:
On Thu, 2017-08-31 at 15:40 -0400, Josh Boyer wrote:
> As a middle ground, does disabling POWER6 and POWER7 variants save
> significant time? Having 970 and POWER8 covers the lowest commonly
> avaiable "cheap" option as well as the newest released POWER
> hardware.
POWER6 is in-order, so *if* we still care about it at all then there is
potentially some benefit in having a dedicated build for it. Dropping
POWER7 is probably a no-brainer; it ought to cope with whatever we
throw at it.
Could we build the 970 baseline build with -mtune=power6? Then perhaps
we only need two builds.
But I can certainly drop POWER7 as a first step and see how the build
time compares with armhfp.
Thanks,
Florian