https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84058
--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> --- 000000000065ff3a <inflateStateCheck.lto_priv.5319.cold.366>: 65ff3a: b8 01 00 00 00 mov $0x1,%eax 65ff3f: c3 retq 65ff40: b8 01 00 00 00 mov $0x1,%eax 65ff45: c3 retq 65ff46: b8 01 00 00 00 mov $0x1,%eax 65ff4b: c3 retq 65ff4c: b8 01 00 00 00 mov $0x1,%eax 65ff51: c3 retq 65ff52: b8 01 00 00 00 mov $0x1,%eax 65ff57: c3 retq another cute example of this phenomena. Also missed tail merging.