https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69097
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Sat Jan 9 07:37:04 2016 New Revision: 232188 URL: https://gcc.gnu.org/viewcvs?rev=232188&root=gcc&view=rev Log: PR middle-end/50865 PR tree-optimization/69097 * fold-const.h (expr_not_equal_to): New prototype. * fold-const.c: Include stringpool.h and tree-ssanames.h. (expr_not_equal_to): New function. * match.pd (X % -Y is the same as X % Y): Don't optimize unless X is known not to be equal to minimum or Y is known not to be equal to -1. * tree-vrp.c (simplify_div_or_mod_using_ranges): Add GSI argument. fold TRUNC_MOD_EXPR if the second argument is not a power of two. (simplify_stmt_using_ranges): Adjust caller. (vrp_finalize): Call set_value_range on SSA_NAMEs before calling substitute_and_fold. * gcc.c-torture/execute/pr50865.c: New test. * gcc.c-torture/execute/pr69097-1.c: New test. * gcc.c-torture/execute/pr69097-2.c: New test. * gcc.dg/pr69097-1.c: New test. * gcc.dg/pr69097-2.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr50865.c trunk/gcc/testsuite/gcc.c-torture/execute/pr69097-1.c trunk/gcc/testsuite/gcc.c-torture/execute/pr69097-2.c trunk/gcc/testsuite/gcc.dg/pr69097-1.c trunk/gcc/testsuite/gcc.dg/pr69097-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/fold-const.h trunk/gcc/match.pd trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vrp.c
