* configure.ac: Compute and substitute omp_device_properties and
	omp_device_property_deps.
	* Makefile.in (generated_files): Add omp-device-properties.h.
	(omp-general.o): Depend on omp-device-properties.h.
	(omp_device_properties): New make variable.
	(omp-device-properties.h, s-omp-device-properties-h,
	install-omp-device-properties): New goals.
	(install): Depend on install-omp-device-properties for accelerators.
	* target.def (TARGET_OMP_DEVICE_KIND_ARCH_ISA): New target hook.
	* target.h (enum omp_device_kind_arch_isa): New enum.
	* doc/tm.texi.in: Add placeholder for TARGET_OMP_DEVICE_KIND_ARCH_ISA
	documentation.
	* omp-general.c: Include omp-device-properties.h.
	(omp_max_simt_vf): Expect OFFLOAD_TARGET_NAMES to be separated by
	colon instead of comma.
	(omp_offload_device_kind_arch_isa, omp_maybe_offloaded): New
	functions.
	(omp_context_selector_matches): Implement device set arch/isa
	selectors, improve device set kind selector handling.
	* config/i386/i386-options.h (ix86_omp_device_kind_arch_isa): Declare.
	* config/i386/i386.c (TARGET_SIMD_CLONE_ADJUST,
	TARGET_SIMD_CLONE_USABLE): Formatting fix.
	(TARGET_OMP_DEVICE_KIND_ARCH_ISA): Redefine to
	ix86_omp_device_kind_arch_isa.
	* config/i386/i386-options.c (struct ix86_target_opts): Move type
	definition from ix86_target_string to file scope.
	(isa2_opts, isa_opts): Moved arrays from ix86_target_string function
	to file scope.
	(ix86_omp_device_kind_arch_isa): New function.
	(ix86_target_string): Moved struct ix86_target_opts, isa2_opts and
	isa_opts definitions to file scope.
	* config/i386/t-intelmic (omp-device-properties): New goal.
	* config/nvptx/t-nvptx (omp-device-properties): Likewise.
	* config/nvptx/nvptx.c (nvptx_omp_device_kind_arch_isa): New function.
	(TARGET_OMP_DEVICE_KIND_ARCH_ISA): Redefine to
	nvptx_omp_device_kind_arch_isa.
	* configure: Regenerate.
	* doc/tm.texi: Regenerate.
testsuite/
	* c-c++-common/gomp/declare-variant-9.c: New test.
	* c-c++-common/gomp/declare-variant-10.c: New test.

From-SVN: r277662