https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81924
Bug ID: 81924 Summary: [5 Regression] ICE: in simplify_binary_operation_1, at simplify-rtx.c:3678 on powerpc64le-linux-gnu Product: gcc Version: 7.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: doko at gcc dot gnu.org Target Milestone: --- seen with the gcc-5 branch on powerpc64le-linux-gnu, works on 4.8, 6 and 7, worked around with -O1: $ gcc-5 -c -g -O2 foo.cfoo.c: In function ‘fn1’: foo.c:19:1: internal compiler error: in simplify_binary_operation_1, at simplify-rtx.c:3678 } ^ Please submit a full bug report, with preprocessed source if appropriate. (gdb) bt #0 0x0000000010d12b64 in fancy_abort(char const*, int, char const*) () #1 0x000000001066d4dc in ?? () #2 0x00000000102c2048 in ?? () #3 0x00000000102c2f70 in cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def* (*)(rtx_def*, bitmap_head*, int, void*), void*) () #4 0x0000000010913938 in ?? () #5 0x00000000102c1ef4 in ?? () #6 0x00000000102c1bb8 in ?? () #7 0x00000000102c2f70 in cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def* (*)(rtx_def*, bitmap_head*, int, void*), void*) () #8 0x0000000010913938 in ?? () #9 0x00000000102c1ef4 in ?? () #10 0x00000000102c2f70 in cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def* (*)(rtx_def*, bitmap_head*, int, void*), void*) () #11 0x0000000010912508 in emit_note_insn_var_location(variable_def**, emit_note_data_def*) () #12 0x0000000010914654 in ?? () #13 0x0000000010919428 in ?? () #14 0x000000001091bbd8 in ?? () #15 0x00000000105b5c10 in execute_one_pass(opt_pass*) () #16 0x00000000105b6124 in ?? () #17 0x00000000105b613c in ?? () #18 0x00000000105b613c in ?? () #19 0x00000000105b61c4 in execute_pass_list(function*, opt_pass*) () #20 0x00000000102b0bac in cgraph_node::expand() () #21 0x00000000102b25d8 in ?? () #22 0x00000000102b40a8 in symbol_table::finalize_compilation_unit() () #23 0x0000000010176be8 in c_write_global_declarations() () #24 0x00000000106903fc in ?? () #25 0x00000000101588d8 in toplev::main(int, char**) () #26 0x0000000010159348 in main () $ cat foo.c typedef __uint128_t vint128_t __attribute__((vector_size(16))); vint128_t z; int x, y; void fn2(void); void fn1(void) { vint128_t c; y = 1000; for (; y; y--) { c = c ^ x; z -= c; z ^= x; c = c ^ x; } fn2(); }