https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109622
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jules at gcc dot gnu.org
Summary|[13/14 regression] internal |[13/14 regression][OpenACC]
|compiler error: in |internal compiler error: in
|omp_group_base, at |omp_group_base, at
|gimplify.cc:9412 if |gimplify.cc:9412 if
|-fopenacc is set. |-fopenacc is set.
--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> ---
The ICE is in omp_group_base, which was added by Julian
in r13-2661-gb57abd072dd319a72839a49e769bffc244a52bc0 and updated in later
commits.
The debugger shows:
Breakpoint 1, omp_index_mapping_groups_1 (grpmap=0x2d2f960, groups=0x2cc4700,
reindex_sentinel=0x0) at ../../repos/gcc/gcc/gimplify.cc:9426
9426 {
(gdb) n
9431 FOR_EACH_VEC_ELT (*groups, i, grp)
...
9441 tree node = omp_group_base (grp, &chained, &fpp);
for the last grp (i = 1, there are only 2).
9292 omp_group_base (omp_mapping_group *grp, unsigned int *chained,
9293 tree *firstprivate)
9294 {
9295 tree node = *grp->grp_start;
(gdb) p debug(*grp->grp_start)
map(attach_detach:atransform2->next [bias: 0])
Which fails at 'gcc_unreachable' for 'switch (OMP_CLAUSE_MAP_KIND (node))'.
* * *
I note that
case GOMP_MAP_ATTACH:
case GOMP_MAP_DETACH:
are handled but GOMP_MAP_ATTACH_DETACH isn't.
Actually, it is handled but not as separate input but as:
case ....:
...
node = OMP_CLAUSE_CHAIN (node);
switch (OMP_CLAUSE_MAP_KIND (node))
...
case GOMP_MAP_ATTACH_DETACH:
* * *
The original input is ("debug(...)" for i = 0, which shows i=0 and i=1):
map(attach:*atransform2->next [bias: 184]) map(attach_detach:atransform2->next
[bias: 0])
which is fine, but as FOR_EACH_VEC_ELT (*groups, i, grp) then also processes
i=1 separately, it fails.
