S/390: arch12: Add arch12 option.

S/390: arch12: Add arch12 option.

This patch covers the mechanical work of making the new architecture
option arch12 available wherever it will be needed later.

gcc/testsuite/ChangeLog:

2017-03-24  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/s390.exp: Run tests in arch12 and vxe dirs.
	* lib/target-supports.exp: Add effective target check s390_vxe.

gcc/ChangeLog:

2017-03-24  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* common/config/s390/s390-common.c (processor_flags_table): Add
	arch12.
	* config.gcc: Add arch12.
	* config/s390/driver-native.c (s390_host_detect_local_cpu):
	Default to arch12 for unknown CPU model numbers.
	* config/s390/s390-builtins.def: Add B_VXE builtin flag.
	* config/s390/s390-c.c (s390_cpu_cpp_builtins_internal): Adjust
	PROCESSOR_max sanity check.
	* config/s390/s390-opts.h (enum processor_type): Add
	PROCESSOR_ARCH12.
	* config/s390/s390.c (processor_table): Add arch12.
	(s390_expand_builtin): Add check for B_VXE flag.
	(s390_issue_rate): Add PROCESSOR_ARCH12.
	(s390_get_sched_attrmask): Likewise.
	(s390_get_unit_mask): Likewise.
	(s390_sched_score): Enable z13 scheduling for arch12.
	(s390_sched_reorder): Likewise.
	(s390_sched_variable_issue): Likewise.
	* config/s390/s390.h (enum processor_flags): Add PF_ARCH12 and
	PF_VXE.
	(s390_tune_attr): Use z13 scheduling also for arch12.
	(TARGET_CPU_ARCH12, TARGET_CPU_ARCH12_P, TARGET_CPU_VXE)
	(TARGET_CPU_VXE_P, TARGET_ARCH12, TARGET_ARCH12_P, TARGET_VXE)
	(TARGET_VXE_P): New macros.
	* config/s390/s390.md: Add arch12 to cpu attribute.  Add arch12
	and vxe to cpu_facility.  Add arch12 and vxe to enabled attribute.
	* config/s390/s390.opt: Add arch12 as processor_type.

From-SVN: r246452