https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105653
--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> --- Created attachment 53403 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53403&action=edit A shorter testcase % aarch64-linux-gnu-g++-13.0.0 -O2 -fcompare-debug -fno-gcse -c wo91465u.cpp aarch64-linux-gnu-g++-13.0.0: error: wo91465u.cpp: '-fcompare-debug' failure (length) --- wo91465u.cpp.gkd 2022-08-03 10:02:59.526593546 +0700 +++ wo91465u.gk.cpp.gkd 2022-08-03 10:02:59.554593642 +0700 @@ -47,10 +47,7 @@ (zero_extend:DI (mem:SI (plus:DI (mult:DI (reg:DI 1 x1 [orig:96 D.xxxx ] [96]) (const_int 4 [0x4])) (reg/f:DI 4 x4 [orig:93 _7 ] [93])) [ MEM[(int *)_7 + ivtmp.6_16 * 4]+0 S4 A32]))) "wo91465u.cpp":10:7# {*zero_extendsidi2_aarch64} - (expr_list:REG_EQUIV (mem:SI (plus:DI (mult:DI (reg:DI 1 x1 [orig:96 D.xxxx ] [96]) - (const_int 4 [0x4])) - (reg/f:DI 4 x4 [orig:93 _7 ] [93])) [ MEM[(int *)_7 + ivtmp.6_16 * 4]+0 S4 A32]) - (nil))) + (nil)) (jump_insn:TI # 0 0 (set (pc) (if_then_else (eq (reg:SI 2 x2 [orig:104 MEM[(int *)_7 + ivtmp.6_16 * 4] ] [104]) (const_int 0 [0]))