https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80304
--- Comment #18 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > r239317 works, r239326 fails, and also appears to be the only > patch in the vicinity that does anything about loops. > > Could this be the cause? > > Author: edlinger > Date: Fri Aug 12 19:30:39 2016 > New Revision: 239426 Actually it is r239326 Fix PR tree-optimization/71734 2016-08-10 Yuri Rumyantsev <ysrum...@gmail.com> PR tree-optimization/71734 * tree-ssa-loop-im.c (ref_indep_loop_p): Add new argument REF_LOOP, invoke ref_indep_loop_p_1. (outermost_indep_loop): Pass LOOP argumnet where REF was defined to ref_indep_loop_p. (ref_indep_loop_p_1): Fix commentary, add argument REF_LOOP, combine it with ref_indep_lopp_p_2, update SAFELEN if only REF is inside LOOP, do not cache dpendence value for loops with non-zero SAFELEN. (ref_indep_loop_p_2): Delete function. (can_sm_ref_p): Pass LOOP as additional argument to ref_indep_loop_p. Reverting the commit fixes the tests in this PR and in pr80305 (then as expected libgomp.fortran/pr71734-1.f90 and libgomp.fortran/pr71734-2.f90 fail).