OpenACC reference count overhaul
libgomp/
* libgomp.h (struct splay_tree_key_s): Substitute dynamic_refcount
field for virtual_refcount.
(enum gomp_map_vars_kind): Add GOMP_MAP_VARS_OPENACC_ENTER_DATA.
(gomp_free_memmap): Remove prototype.
* oacc-init.c (acc_shutdown_1): Iteratively call gomp_remove_var
instead of calling gomp_free_memmap.
* oacc-mem.c (acc_map_data): Use virtual_refcount instead of
dynamic_refcount.
(acc_unmap_data): Open code instead of forcing target_mem_desc's
to_free field to NULL then calling gomp_unmap_vars. Handle
REFCOUNT_INFINITY on target blocks.
(goacc_enter_data): Rename to...
(goacc_enter_datum): ...this. Remove MAPNUM parameter and special
handling for mapping groups. Use virtual_refcount instead of
dynamic_refcount. Use GOMP_MAP_VARS_OPENACC_ENTER_DATA for
map_map_vars_async call. Re-do lookup for target pointer return value.
(acc_create, acc_create_async, acc_copyin, acc_copyin_async): Call
renamed goacc_enter_datum function.
(goacc_exit_data): Rename to...
(goacc_exit_datum): ...this. Update for virtual_refcount semantics.
(acc_delete, acc_delete_async, acc_delete_finalize,
acc_delete_finalize_async, acc_copyout, acc_copyout_async,
acc_copyout_finalize, acc_copyout_finalize_async): Call renamed
goacc_exit_datum function.
(gomp_acc_remove_pointer, find_pointer): Remove functions.
(find_group_last, goacc_enter_data_internal, goacc_exit_data_internal):
New functions.
(GOACC_enter_exit_data): Use goacc_enter_data_internal and
goacc_exit_data_internal helper functions.
* target.c (gomp_map_vars_internal): Handle
GOMP_MAP_VARS_OPENACC_ENTER_DATA. Update for virtual_refcount
semantics.
(gomp_unmap_vars_internal): Update for virtual_refcount semantics.
(gomp_load_image_to_device, omp_target_associate_ptr): Zero-initialise
virtual_refcount field instead of dynamic_refcount.
(gomp_free_memmap): Remove function.
* testsuite/libgomp.oacc-c-c++-common/unmap-infinity-1.c: New test.
* testsuite/libgomp.c-c++-common/unmap-infinity-2.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr92843-1.c: Add XFAIL.
From-SVN: r279621
378da98fcc