On Mon, Feb 25, 2019 at 10:23:52AM +0000, Kyrill Tkachov wrote:
> > The only bootstraps I'm doing are distro builds with
> > --with-tune=generic-armv7-a --with-arch=armv7-a \
> > --with-float=hard --with-fpu=vfpv3-d16 --with-abi=aapcs-linux
> > I don't have setup nor experience with configuring anything else, don't
> > really know what is and what isn't ABI compatible etc.
> > Isn't --with-mode=arm the default with the above set of options? Can
> > --with-mode=thumb be used ABI compatibly with that, or is that incompatible?
>
>
> They are ABI-compatible. Running the testsuite with -mthumb in RUNTESTFLAGS
> would also be enough in this case if you don't have the cycles for a
> bootstrap.
Ok, so tried to do two distro builds with the above plus --with-mode=thumb,
one without the casesi patch, the other one with that.
Both bootstrapped successfully, but dunno why the regtests were too slow to
fit under our hard 2 days timeout limit. When I grabbed the build logs, the
only difference in the grep ^FAIL | sort -u lines was one fewer go failure
with the patch (but that is most likely a random failure rather than the
patch actually changing anything). Is -mthumb generally slower than ARM
mode?
Anyway, I'm afraid this is as far as I can go in my testing.
Jakub
