S/390: Add patterns for r<nox>sbg instructions.

S/390: Add patterns for r<nox>sbg instructions.

gcc/ChangeLog:

2016-05-03  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* config/s390/s390.md ("*r<noxa>sbg_<mode>_sll")
	("*r<noxa>sbg_<mode>_srl"): New define_insns.
	("*r<noxa>sbg_<mode>_srl_bitmask"): Rename by adding "_bitmask".
	("*r<noxa>sbg_<mode>_sll_bitmask"): Likewise.

gcc/testsuite/ChangeLog:

2016-05-03  Dominik Vogt  <vogt@linux.vnet.ibm.com>

	* gcc.target/s390/md/rXsbg_mode_sXl.c: New test.
	* gcc.target/s390/s390.exp (check_effective_target_z10_instructions):
	Procedure to check for z10 instruction set.

From-SVN: r235822