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* [Bug middle-end/114754] New: [OpenMP] Missing 'uses_allocators' diagnostic
@ 2024-04-17 12:03 burnus at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: burnus at gcc dot gnu.org @ 2024-04-17 12:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114754
Bug ID: 114754
Summary: [OpenMP] Missing 'uses_allocators' diagnostic
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: accepts-invalid, diagnostic, openmp
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Target Milestone: ---
Cf. https://github.com/SOLLVE/sollve_vv/pull/802
"LLVM error:
error: allocator must be specified in the 'uses_allocators' clause
adding uses_allocators(omp_default_mem_alloc) fixes the problem"
OpenMP spec has under 'Restrictions to the *target* construct are as follows:'
"Memory allocators that do not appear in a *uses_allocators* clause cannot
appear as an allocator in an *allocate* clause or be used in the *target*
region unless a *requires* directive with the *dynamic_allocators* clause is
present in the same compilation unit."
Example snippets, based on the sollve_vv testcase.
The OG13 patch only diagnose the issue in the last/4th directive;
clang diagnoses both the 'allocate' clause variants (2nd + 4th) but neither
diagnoses the 1st/4th one.
* * *
omp_allocator_handle_t al = omp_init_allocator(omp_default_mem_space, 0,
NULL);
#pragma omp target
{
int *y = omp_alloc(omp_default_mem_alloc, sizeof(1));
}
#pragma omp target allocate(omp_default_mem_alloc:x) firstprivate(x)
map(from: device_result)
{
for (int i = 0; i < N; i++)
x += i;
device_result = x;
}
#pragma omp target firstprivate(al)
{
int *y = omp_alloc(al, sizeof(1));
}
#pragma omp target allocate(al:x) firstprivate(x) map(from: device_result)
{
for (int i = 0; i < N; i++)
x += i;
device_result = x;
}
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2024-04-17 12:03 [Bug middle-end/114754] New: [OpenMP] Missing 'uses_allocators' diagnostic burnus at gcc dot gnu.org
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