https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119966
--- Comment #14 from Dimitar Dimitrov <dimitar at gcc dot gnu.org> ---
Linaro CI discovered [1] that commit
r16-1565-g2dcc6dbd8a00caf7cfa8cac17b3fd1c33d658016 introduced a regression for
aarch64-unknown-linux-gnu:
FAIL: gcc.c-torture/compile/pass.c -O3 -g (internal compiler error:
Segmentation fault)
../../../../../../gcc/gcc/diagnostic-global-context.cc:517
0x1019f33 crash_signal
../../../../../../gcc/gcc/toplev.cc:321
0xdee9cc add_regs_to_insn_regno_info
../../../../../../gcc/gcc/lra.cc:1484
0xdeec0b add_regs_to_insn_regno_info
../../../../../../gcc/gcc/lra.cc:1568
0xdeee6f lra_update_insn_regno_info(rtx_insn*)
../../../../../../gcc/gcc/lra.cc:1661
0xe0cf7f process_insn_for_elimination
../../../../../../gcc/gcc/lra-eliminations.cc:1398
0xe0cf7f lra_eliminate(bool, bool)
../../../../../../gcc/gcc/lra-eliminations.cc:1497
0xe08afb lra_constraints(bool)
../../../../../../gcc/gcc/lra-constraints.cc:5368
0xdef6b7 lra(_IO_FILE*, int)
../../../../../../gcc/gcc/lra.cc:2455
0xda0273 do_reload
../../../../../../gcc/gcc/ira.cc:5986
0xda0273 execute
../../../../../../gcc/gcc/ira.cc:6174
I'm not sure how a debug insn ended up with a null operand, which cause the
ICE:
(debug_insn 7 6 8 2 (var_location:SI a (plus:SI (nil)
(const_int 12 [0xc])))
"../../gcc/gcc/testsuite/gcc.c-torture/compile/pass.c":16:10 -1
(nil))
[1] https://linaro.atlassian.net/browse/GNU-1609
