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[nvptx] Enable large vectors

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Allow vector_length clauses to accept values larger than warp size.  Note that
this does not enable setting vector_length to values larger than warp size using
-fopenacc-dim.

2019-01-12  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (nvptx_goacc_validate_dims): Take larger vector
	lengths into account.

	* testsuite/libgomp.oacc-c-c++-common/vector-length-128-1.c: Expect
	vector length to be 128.
	* testsuite/libgomp.oacc-c-c++-common/parallel-dims.c: Expect vector
	length 2097152 to be reduced to 1024 instead of 32.

From-SVN: r267889
This commit is contained in:
Tom de Vries 2019-01-12 22:17:42 +00:00 committed by Tom de Vries
parent 6f7814d08f
commit 2b9d9e3937
5 changed files with 17 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2019-01-12 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx.c (nvptx_goacc_validate_dims): Take larger vector
lengths into account.
2019-01-12 Svante Signell <svante.signell@gmail.com>
* config/i386/gnu.h (TARGET_THREAD_SSP_OFFSET): Define.

2
gcc/config/nvptx/nvptx.c
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@ -96,7 +96,7 @@
#define PTX_NUM_PER_WORKER_BARRIERS (PTX_CTA_NUM_BARRIERS - PTX_NUM_PER_CTA_BARRIERS)
#define PTX_DEFAULT_VECTOR_LENGTH PTX_WARP_SIZE
#define PTX_MAX_VECTOR_LENGTH PTX_WARP_SIZE
#define PTX_MAX_VECTOR_LENGTH PTX_CTA_SIZE
#define PTX_WORKER_LENGTH 32
#define PTX_DEFAULT_RUNTIME_DIM 0 /* Defer to runtime. */

7
libgomp/ChangeLog
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@ -1,3 +1,10 @@
2019-01-12 Tom de Vries <tdevries@suse.de>
* testsuite/libgomp.oacc-c-c++-common/vector-length-128-1.c: Expect
vector length to be 128.
* testsuite/libgomp.oacc-c-c++-common/parallel-dims.c: Expect vector
length 2097152 to be reduced to 1024 instead of 32.
2019-01-11 Thomas Schwinge <thomas@codesourcery.com>
James Norris <jnorris@codesourcery.com>

4
libgomp/testsuite/libgomp.oacc-c-c++-common/parallel-dims.c
View File

@ -350,7 +350,7 @@ int main ()
int gangs_min, gangs_max, workers_min, workers_max, vectors_min, vectors_max;
gangs_min = workers_min = vectors_min = INT_MAX;
gangs_max = workers_max = vectors_max = INT_MIN;
#pragma acc parallel copy (vectors_actual) /* { dg-warning "using vector_length \\(32\\), ignoring 2097152" "" { target openacc_nvidia_accel_configured } } */ \
#pragma acc parallel copy (vectors_actual) /* { dg-warning "using vector_length \\(1024\\), ignoring 2097152" "" { target openacc_nvidia_accel_configured } } */ \
vector_length (VECTORS)
{
if (acc_on_device (acc_device_host))
@ -361,7 +361,7 @@ int main ()
else if (acc_on_device (acc_device_nvidia))
{
/* The GCC nvptx back end enforces vector_length (32). */
vectors_actual = 32;
vectors_actual = 1024;
}
else
__builtin_abort ();

5
libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-128-1.c
View File

@ -33,7 +33,6 @@ main (void)
return 0;
}
/* { dg-prune-output "using vector_length \\(32\\), ignoring 128" } */
/* { dg-final { scan-offload-tree-dump "__attribute__\\(\\(oacc function \\(1, 1, 32\\)" "oaccdevlow" } } */
/* { dg-output "nvptx_exec: kernel main\\\$_omp_fn\\\$0: launch gangs=1, workers=1, vectors=32" } */
/* { dg-final { scan-offload-tree-dump "__attribute__\\(\\(oacc function \\(1, 1, 128\\)" "oaccdevlow" } } */
/* { dg-output "nvptx_exec: kernel main\\\$_omp_fn\\\$0: launch gangs=1, workers=1, vectors=128" } */