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Add 'libgomp.oacc-c-c++-common/private-big-1.c' [PR105421]

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After commit r13-3404-g7c55755d4c760de326809636531478fd7419e1e5
"amdgcn: Use FLAT addressing for all functions with pointer arguments [PR105421]",
"big" private data now works for GCN offloading, too.

	PR target/105421
	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/private-big-1.c: New.
This commit is contained in:
Thomas Schwinge 2022-10-18 00:13:47 +02:00
parent 7c55755d4c
commit c7ebee2378
1 changed files with 100 additions and 0 deletions
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libgomp/testsuite/libgomp.oacc-c-c++-common/private-big-1.c Normal file
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/* Test "big" private data. */
/* { dg-additional-options -fno-inline } for stable results regarding OpenACC 'routine'. */
/* { dg-additional-options -fopt-info-all-omp }
{ dg-additional-options --param=openacc-privatization=noisy }
{ dg-additional-options -foffload=-fopt-info-all-omp }
{ dg-additional-options -foffload=--param=openacc-privatization=noisy }
for testing/documenting aspects of that functionality. */
/* { dg-additional-options -Wopenacc-parallelism } for testing/documenting
aspects of that functionality. */
/* For GCN offloading compilation, we (expectedly) run into a
'gang-private data-share memory exhausted' error: the default
'-mgang-private-size' is too small. Raise it so that 'uint32_t x[344]' plus
some internal-use data fits in:
{ dg-additional-options -foffload-options=amdgcn-amdhsa=-mgang-private-size=1555 { target openacc_radeon_accel_selected } } */
/* It's only with Tcl 8.5 (released in 2007) that "the variable 'varName'
passed to 'incr' may be unset, and in that case, it will be set to [...]",
so to maintain compatibility with earlier Tcl releases, we manually
initialize counter variables:
{ dg-line l_dummy[variable c_compute 0 c_loop 0] }
{ dg-message dummy {} { target iN-VAl-Id } l_dummy } to avoid
"WARNING: dg-line var l_dummy defined, but not used". */
#include <assert.h>
#include <stdint.h>
/* Based on 'private-variables.c:loop_g_5'. */
/* To demonstrate PR105421 "GCN offloading, raised '-mgang-private-size':
'HSA_STATUS_ERROR_MEMORY_APERTURE_VIOLATION'", a 'struct' indirection, for
example, has been necessary in combination with a separate routine. */
struct data
{
uint32_t *x;
uint32_t *arr;
uint32_t i;
};
#pragma acc routine worker
static void
loop_g_5_r(struct data *data)
{
uint32_t *x = data->x;
uint32_t *arr = data->arr;
uint32_t i = data->i;
#pragma acc loop /* { dg-line l_loop[incr c_loop] } */
/* { dg-note {variable 'j' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop$c_loop } */
/* { dg-optimized {assigned OpenACC worker vector loop parallelism} {} { target *-*-* } l_loop$c_loop } */
for (int j = 0; j < 320; j++)
arr[i * 320 + j] += x[(i * 320 + j) % 344];
}
void loop_g_5()
{
uint32_t x[344], i, arr[320 * 320];
for (i = 0; i < 320 * 320; i++)
arr[i] = i;
#pragma acc parallel copy(arr)
{
#pragma acc loop gang private(x) /* { dg-line l_loop[incr c_loop] } */
/* { dg-note {variable 'x' in 'private' clause is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_loop$c_loop }
{ dg-note {variable 'x' ought to be adjusted for OpenACC privatization level: 'gang'} {} { target *-*-* } l_loop$c_loop }
{ dg-note {variable 'x' adjusted for OpenACC privatization level: 'gang'} {} { target { ! openacc_host_selected } } l_loop$c_loop } */
/* { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop$c_loop } */
/* { dg-note {variable 'data' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_loop$c_loop }
{ dg-note {variable 'data' ought to be adjusted for OpenACC privatization level: 'gang'} {} { target *-*-* } l_loop$c_loop }
{ dg-note {variable 'data' adjusted for OpenACC privatization level: 'gang'} {} { target { ! openacc_host_selected } } l_loop$c_loop } */
/* { dg-note {variable 'j' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_loop$c_loop } */
/* { dg-optimized {assigned OpenACC gang loop parallelism} {} { target *-*-* } l_loop$c_loop } */
for (i = 0; i < 320; i++)
{
for (int j = 0; j < 344; j++)
x[j] = j * (2 + i);
struct data data = { x, arr, i };
loop_g_5_r(&data); /* { dg-line l_compute[incr c_compute] } */
/* { dg-optimized {assigned OpenACC worker vector loop parallelism} {} { target *-*-* } l_compute$c_compute } */
}
}
for (i = 0; i < 320 * 320; i++)
assert(arr[i] == i + (i % 344) * (2 + (i / 320)));
}
int main ()
{
loop_g_5();
return 0;
}