https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79649
--- Comment #13 from amker at gcc dot gnu.org --- (In reply to Uroš Bizjak from comment #12) > The added testcase also ICEs with -O3 -mx32: > > ~/gcc-build/gcc/cc1 -O3 -mx32 -quiet pr79649.c > pr79649.c: In function ‘f1’: > pr79649.c:11:1: internal compiler error: in get_use_type, at > tree-ssa-loop-ivopts.c:3831 > f1 (unsigned char __seg_gs *s, size_t n) > ^~ > 0xff99a1 get_use_type > ../../git/gcc/gcc/tree-ssa-loop-ivopts.c:3830 > 0xfff0c8 get_computation_at > ../../git/gcc/gcc/tree-ssa-loop-ivopts.c:3847 > 0x1009aba get_computation_cost_at > ../../git/gcc/gcc/tree-ssa-loop-ivopts.c:5061 > 0x1009c0f get_computation_cost > ../../git/gcc/gcc/tree-ssa-loop-ivopts.c:5089 > 0x100a251 determine_group_iv_cost_address > ../../git/gcc/gcc/tree-ssa-loop-ivopts.c:5133 Hmm, there is existing issue in IVOPT that address space information is not maintained correctly, but this one is earlier than that. I will have a look.
