re PR target/86591 (gcc.target/powerpc/builtins-1.c fails starting with r261904)

re PR target/86591 (gcc.target/powerpc/builtins-1.c fails starting with r261904)

gcc/testsuite/ChangeLog:

2018-07-23  Carl Love  <cel@us.ibm.com>

	PR 86591
	* gcc.target/powerpc/altivec-1-runnable.c: Move vector double tests to
	file altivec-2-runnable.c.
	* gcc.target/powerpc/altivec-2-runnable.c: Add vector double tests.
	* gcc.target/powerpc/buitlins-1.c: Remove dg-final check for xxlor.
	Update dg-final test for __divdi3 and __udivdi3 instructions. Update
	comments for instruction generated by vec_mergeh, vec_perm, vec_round,
	vec_cts, vec_ctu, vec_cpsgn tests.

From-SVN: r262934