Optimize GCN OpenMP malloc performance

Optimize GCN OpenMP malloc performance

2019-11-13  Andrew Stubbs  <ams@codesourcery.com>

	libgomp/
	* config/gcn/team.c (gomp_gcn_enter_kernel): Set up the team arena
	and use team_malloc variants.
	(gomp_gcn_exit_kernel): Use team_free.
	* libgomp.h (TEAM_ARENA_SIZE): Define.
	(TEAM_ARENA_START): Define.
	(TEAM_ARENA_FREE): Define.
	(TEAM_ARENA_END): Define.
	(team_malloc): New function.
	(team_malloc_cleared): New function.
	(team_free): New function.
	* team.c (gomp_new_team): Initialize and use team_malloc.
	(free_team): Use team_free.
	(gomp_free_thread): Use team_free.
	(gomp_pause_host): Use team_free.
	* work.c (gomp_init_work_share): Use team_malloc.
	(gomp_fini_work_share): Use team_free.

From-SVN: r278136