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This removes the nest-var ICV, expressing nesting in terms of the max-active-levels-var ICV instead. The max-active-levels-var ICV is now per data environment rather than per device. 2020-11-18 Kwok Cheung Yeung <kcy@codesourcery.com> libgomp/ * env.c (gomp_global_icv): Remove nest_var field. Add max_active_levels_var field. (gomp_max_active_levels_var): Remove. (parse_boolean): Return true on success. (handle_omp_display_env): Express OMP_NESTED in terms of max_active_levels_var. Change format specifier for max_active_levels_var. (initialize_env): Set max_active_levels_var from OMP_MAX_ACTIVE_LEVELS, OMP_NESTED, OMP_NUM_THREADS and OMP_PROC_BIND. * icv.c (omp_set_nested): Express in terms of max_active_levels_var. (omp_get_nested): Likewise. (omp_set_max_active_levels): Use max_active_levels_var field instead of gomp_max_active_levels_var. (omp_get_max_active_levels): Likewise. * libgomp.h (struct gomp_task_icv): Remove nest_var field. Add max_active_levels_var field. (gomp_supported_active_levels): Set to UCHAR_MAX. (gomp_max_active_levels_var): Delete. * libgomp.texi (omp_get_nested): Update documentation. (omp_set_nested): Likewise. (OMP_MAX_ACTIVE_LEVELS): Likewise. (OMP_NESTED): Likewise. (OMP_NUM_THREADS): Likewise. (OMP_PROC_BIND): Likewise. * parallel.c (gomp_resolve_num_threads): Replace reference to nest_var with max_active_levels_var. Use max_active_levels_var field instead of gomp_max_active_levels_var.
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