https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99007
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-8 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:5dfeb10fd2d21eebf329272cce687ad34c2ae2a9 commit r8-10882-g5dfeb10fd2d21eebf329272cce687ad34c2ae2a9 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Feb 10 10:34:58 2021 +0100 openmp: Temporarily disable into_ssa when gimplifying OpenMP reduction clauses [PR99007] gimplify_scan_omp_clauses was already calling gimplify_expr with false as last argument to make sure it is not an SSA_NAME, but as the testcases show, that is not enough, SSA_NAME temporaries created during that gimplification can be reused too and we can't allow SSA_NAMEs to be used across OpenMP region boundaries, as we can only firstprivatize decls. Fixed by temporarily disabling into_ssa. 2021-02-10 Jakub Jelinek <ja...@redhat.com> PR middle-end/99007 * gimplify.c (gimplify_scan_omp_clauses): For MEM_REF on reductions, temporarily disable gimplify_ctxp->into_ssa around gimplify_expr calls. * g++.dg/gomp/pr99007.C: New test. * gcc.dg/gomp/pr99007-1.c: New test. * gcc.dg/gomp/pr99007-2.c: New test. * gcc.dg/gomp/pr99007-3.c: New test. (cherry picked from commit deba6b20a3889aa23f0e4b3a5248de4172a0167d)
