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[nvptx] Add PTX_WARP_SIZE

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Add PTX_WARP_SIZE constant and use it in nvptx_simt_vf.  The function
nvptx_simt_vf is used for OpenMP, and using PTX_WARP_SIZE here decouples the
OpenMP support from the PTX_VECTOR_LENGTH constant used in OpenACC support.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-17  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (PTX_WARP_SIZE): Define.
	(nvptx_simt_vf): Return PTX_WARP_SIZE instead of PTX_VECTOR_LENGTH.

From-SVN: r267215
This commit is contained in:
Tom de Vries 2018-12-17 21:27:09 +00:00 committed by Tom de Vries
parent 7820b298ed
commit 5d17a4763a
2 changed files with 8 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2018-12-17 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx.c (PTX_WARP_SIZE): Define.
(nvptx_simt_vf): Return PTX_WARP_SIZE instead of PTX_VECTOR_LENGTH.
2018-12-17 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx.c (nvptx_single): Fix whitespace.

4
gcc/config/nvptx/nvptx.c
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@ -81,6 +81,8 @@
#define WORKAROUND_PTXJIT_BUG_2 1
#define WORKAROUND_PTXJIT_BUG_3 1
#define PTX_WARP_SIZE 32
/* The various PTX memory areas an object might reside in. */
enum nvptx_data_area
{
@ -5175,7 +5177,7 @@ nvptx_expand_builtin (tree exp, rtx target, rtx ARG_UNUSED (subtarget),
static int
nvptx_simt_vf ()
{
return PTX_VECTOR_LENGTH;
return PTX_WARP_SIZE;
}
/* Validate compute dimensions of an OpenACC offload or routine, fill