PR20989, sparc GOT sequence optimization

[Rainer Orth]

Hi Jose, Alan,

> Otherwise the fix looks good to me.  I tested it in sparc64-linux-gnu
> and sparcv9-linux-gnu targets.  No regressions.

I've run a sparc-sun-solaris2.12 gcc mainline bootstrap last night,
using gas and gld 2.27 with your patch applied.  Bootstrap is restored
and test results are at the same level as the gas/ld combination, with
the (unchanged) exception of PR ld/20179 related failures.

Thanks.
	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University