libgomp/
* libgomp.map (GOMP_4.0.1): New symbol version.
Add GOMP_offload_register.
* libgomp_target.h: New file.
* splay-tree.h: New file.
* target.c: Include config.h, libgomp_target.h, dlfcn.h, splay-tree.h.
(gomp_target_init): New forward declaration.
(gomp_is_initialized): New static variable.
(splay_tree_node, splay_tree, splay_tree_key): New typedefs.
(struct target_mem_desc, struct splay_tree_key_s, offload_image_descr):
New structures.
(offload_images, num_offload_images, devices, num_devices): New static
variables.
(splay_compare): New static function.
(struct gomp_device_descr): New structure.
(gomp_get_num_devices): Call gomp_target_init.
(resolve_device, gomp_map_vars_existing, gomp_map_vars, gomp_unmap_tgt)
(gomp_unmap_vars, gomp_update, gomp_init_device): New static functions.
(GOMP_offload_register): New function.
(GOMP_target): Arrange for host callback to be performed in a separate
initial thread and contention group, inheriting ICVs from
gomp_global_icv etc. Call gomp_map_vars and gomp_unmap_vars.
Add device initialization and lookup for target function in splay tree.
(GOMP_target_data): Add device initialization and call gomp_map_vars.
(GOMP_target_end_data): Call gomp_unmap_vars.
(GOMP_target_update): Add device initialization and call gomp_update.
(gomp_load_plugin_for_device, gomp_register_images_for_device)
(gomp_target_init): New static functions.
Co-Authored-By: Andrey Turetskiy <andrey.turetskiy@intel.com>
Co-Authored-By: Ilya Verbin <ilya.verbin@intel.com>
Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>
From-SVN: r217492
