https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68673
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Comment on attachment 36910 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36910 tentative patch, part 1, handles f1 and f2 What is the reason for testing for NULL depend? I guess it depends on what the tree-ssa-structalias.c code is actually doing with it. depend is either a NULL, or pointer to an array which contains pointers and some sizes, but 1) those pointers/sizes never escape to the task callback functions 2) they are never actually used as addresses, just as cookies. So, we need to ensure that if depend is non-NULL, then PTA/IPA-PTA/alias oracle/whatever else does not try to optimize the argument away, or think it isn't used, so from this POV the call acts as a readonly use of the array. But other than that it acts as GOMP_task with NULL depend.
