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Chung-Lin Tang 0bac793ed6 openmp: Implement omp_get_device_num routine
This patch implements the omp_get_device_num library routine, specified in
OpenMP 5.0.

GOMP_DEVICE_NUM_VAR is a macro symbol which defines name of a "device number"
variable, is defined on the device-side libgomp, has it's address returned to
host-side libgomp during device initialization, and the host libgomp then
sets its value to the designated device number.

libgomp/ChangeLog:

	* icv-device.c (omp_get_device_num): New API function, host side.
	* fortran.c (omp_get_device_num_): New interface function.
	* libgomp-plugin.h (GOMP_DEVICE_NUM_VAR): Define macro symbol.
	* libgomp.map (OMP_5.0.2): New version space with omp_get_device_num,
	omp_get_device_num_.
	* libgomp.texi (omp_get_device_num): Add documentation for new API
	function.
	* omp.h.in (omp_get_device_num): Add declaration.
	* omp_lib.f90.in (omp_get_device_num): Likewise.
	* omp_lib.h.in (omp_get_device_num): Likewise.
	* target.c (gomp_load_image_to_device): If additional entry for device
	number exists at end of returned entries from 'load_image_func' hook,
	copy the assigned device number over to the device variable.

	* config/gcn/icv-device.c (GOMP_DEVICE_NUM_VAR): Define static global.
	(omp_get_device_num): New API function, device side.
	* plugin/plugin-gcn.c ("symcat.h"): Add include.
	(GOMP_OFFLOAD_load_image): Add addresses of device GOMP_DEVICE_NUM_VAR
	at end of returned 'target_table' entries.

	* config/nvptx/icv-device.c (GOMP_DEVICE_NUM_VAR): Define static global.
	(omp_get_device_num): New API function, device side.
	* plugin/plugin-nvptx.c ("symcat.h"): Add include.
	(GOMP_OFFLOAD_load_image): Add addresses of device GOMP_DEVICE_NUM_VAR
	at end of returned 'target_table' entries.

	* testsuite/lib/libgomp.exp
	(check_effective_target_offload_target_intelmic): New function for
	testing for intelmic offloading.
	* testsuite/libgomp.c-c++-common/target-45.c: New test.
	* testsuite/libgomp.fortran/target10.f90: New test.
2021-08-05 23:29:03 +08:00
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libgo compile, runtime: make selectnbrecv return two values 2021-08-03 16:40:00 -07:00
libgomp openmp: Implement omp_get_device_num routine 2021-08-05 23:29:03 +08:00
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config.guess config.sub, config.guess : Import upstream 2021-01-25. 2021-02-23 17:21:10 +08:00
config.rpath
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configure Darwin, config: Revise host config fragment. 2021-07-09 17:35:57 +01:00
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MAINTAINERS add myself to DCO section 2021-07-15 01:16:51 -04:00
Makefile.def Darwin, configury : Allow for specification and detection of dsymutil. 2021-07-05 20:40:45 +01:00
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