S/390: Add support for z13 instructions lochi and locghi.

S/390: Add support for z13 instructions lochi and locghi.

The attached patch adds patterns to make use of the z13 LOCHI and
LOCGHI instructions.

gcc/ChangeLog:

2016-07-04  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* config/s390/s390.md: Add "z13" cpu_facility.
	("*mov<mode>cc"): Add support for z13 instructions lochi and locghi.
	* config/s390/predicates.md ("loc_operand"): New predicate for "load on
	condition" type instructions.

gcc/testsuite/ChangeLog:

2016-07-04  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* gcc.target/s390/vector/vec-scalar-cmp-1.c: Expect lochi instead
	of locr.
	* gcc.target/s390/loc-1.c: New test.

From-SVN: r237984