https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90416
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- Created attachment 46338 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46338&action=edit Debugging patch So the issue started before the revision, output of the debugging patch is following: $ ./xgcc -B. /tmp/ice.f90 -c -O3 -ffast-math -fdump-tree-vect-details -march=haswell <vector_type 0x7ffff7ac8bd0 type <boolean_type 0x7ffff7ac8b28 SI size <integer_cst 0x7ffff78eedb0 constant 32> unit-size <integer_cst 0x7ffff78eedc8 constant 4> align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type 0x7ffff7ac8b28 precision:32 min <integer_cst 0x7ffff7aebb88 -2147483648> max <integer_cst 0x7ffff7aebbb8 2147483647>> V8SI size <integer_cst 0x7ffff78eeed0 type <integer_type 0x7ffff79030a8 bitsizetype> constant 256> unit-size <integer_cst 0x7ffff78eefc0 type <integer_type 0x7ffff7903000 sizetype> constant 32> align:256 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type 0x7ffff7ac8bd0 nunits:8> calling dump_printf_loc with mask_vectype=0x7ffff7ac8bd0, vectype=0x7ffff796ae70 case T=0x22d0090 during GIMPLE pass: vect dump file: ice.f90.158t.vect dump_generic_node node=0x7ffff7ac1150 /tmp/ice.f90:9:0: 9 | subroutine refl10cm_hm (dBZ , kte) | internal compiler error: in decode_format, at dumpfile.c:976 0xbc6618 dump_pretty_printer::decode_format(text_info*, char const*, char const**) ../../gcc/dumpfile.c:976 0xbc63fc dump_pretty_printer::format_decoder_cb(pretty_printer*, text_info*, char const*, int, bool, bool, bool, bool*, char const**) ../../gcc/dumpfile.c:906 0x20d387a pp_format(pretty_printer*, text_info*) ../../gcc/pretty-print.c:1390 0xbc66e0 dump_context::dump_printf_va(dump_metadata_t const&, char const*, __va_list_tag (*) [1]) ../../gcc/dumpfile.c:1003 0xbc6790 dump_context::dump_printf_loc_va(dump_metadata_t const&, dump_user_location_t const&, char const*, __va_list_tag (*) [1]) ../../gcc/dumpfile.c:1024 0xbc7248 dump_printf_loc(dump_metadata_t const&, dump_user_location_t const&, char const*, ...) ../../gcc/dumpfile.c:1350 0x1541755 vect_check_load_store_mask ../../gcc/tree-vect-stmts.c:2575 0x155446b vectorizable_load ../../gcc/tree-vect-stmts.c:7620 0x155b46d vect_analyze_stmt(_stmt_vec_info*, bool*, _slp_tree*, _slp_instance*, vec<stmt_info_for_cost, va_heap, vl_ptr>*) ../../gcc/tree-vect-stmts.c:9695 0x156b927 vect_analyze_loop_operations ../../gcc/tree-vect-loop.c:1575 0x156cd0e vect_analyze_loop_2 ../../gcc/tree-vect-loop.c:1969 0x156e1ac vect_analyze_loop(loop*, _loop_vec_info*, vec_info_shared*) ../../gcc/tree-vect-loop.c:2268 0x15aad71 try_vectorize_loop_1 ../../gcc/tree-vectorizer.c:883 0x15ab506 try_vectorize_loop ../../gcc/tree-vectorizer.c:1029 0x15ab6d6 vectorize_loops() ../../gcc/tree-vectorizer.c:1111 0x141b9cd execute ../../gcc/tree-ssa-loop.c:414 So as seen, we call dump_printf_loc with 2 arguments, but the var_arg arguments are smashed somehow. I'm going to bisect that now.
