https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111691
Bug ID: 111691
Summary: [OpenMP][5.2] C/C++ handle 'omp declare
variant([base–name:]variant-name)' - i.e. with
'base-name'
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: openmp, rejects-valid
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Target Milestone: ---
OpenMP 5.2 has:
omp declare variant([base–name:]variant-name)
for C/C++/Fortran; in OpenMP 5.1, the 'base-name:' was Fortran, only.
(Example loosely based on
https://github.com/SOLLVE/sollve_vv/blob/master/tests/5.1/declare_variant/test_begin_end_declare_variant.c
)
It seems as if the following should be valid:
void add(int *arr){
for (int i = 0; i < N; i++){ // Base function adds 1 to array values
arr[i] = i+1;
}
}
#pragma omp begin declare variant match(construct={parallel})
void add(int *arr){
#pragma omp for
for (int i = 0; i < N; i++){
arr[i] = i + 2;
}
}
void add_my(int *arr){
#pragma omp for
for (int i = 0; i < N; i++){
arr[i] = i + 3;
}
}
#pragma omp declare variant(add : add_my) match(construct={target})
#pragma omp end declare variant // Note: delimited declare variant ending
here!
