https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80887
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Mon Jun 19 15:01:13 2017 New Revision: 249373 URL: https://gcc.gnu.org/viewcvs?rev=249373&root=gcc&view=rev Log: 2017-06-19 Richard Biener <rguent...@suse.de> PR tree-optimization/80887 c/ * gimple-parser.c (c_parser_gimple_postfix_expression): Handle negated _Literals to parse _Literal (int) -1. * tree-ssa-sccvn.c (mprts_hook_cnt): New global. (vn_lookup_simplify_result): Allow only mprts_hook_cnt succesful simplified lookups, then reset mprts_hook. (vn_nary_build_or_lookup_1): Set mprts_hook_cnt to 9 before simplifying. (try_to_simplify): Likewise. * gcc.dg/tree-ssa/pr80887.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c Modified: trunk/gcc/ChangeLog trunk/gcc/c/ChangeLog trunk/gcc/c/gimple-parser.c trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-sccvn.c
