[PATCH 1/6] [og8] Host-to-device transfer coalescing & magic offset value self-documentation

[Julian Brown]

Previously posted upstream:
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg00825.html

	libgomp/
	* libgomp.h (OFFSET_INLINED, OFFSET_POINTER, OFFSET_STRUCT): Define.
	* target.c (FIELD_TGT_EMPTY): Define.
	(gomp_coalesce_chunk): New.
	(gomp_coalesce_buf): Use above instead of flat array of size_t pairs.
	(gomp_coalesce_buf_add): Adjust for above change.
	(gomp_copy_host2dev): Likewise.
	(gomp_map_val): Use OFFSET_* macros instead of magic constants.  Write
	as switch instead of list of ifs.
	(gomp_map_vars_async): Adjust for gomp_coalesce_chunk change.  Use
	OFFSET_* macros.
---
 libgomp/libgomp.h |    5 +++
 libgomp/target.c  |  101 +++++++++++++++++++++++++++++++---------------------
 2 files changed, 65 insertions(+), 41 deletions(-)

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