https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92903
--- Comment #1 from Julius Werner <jwerner at chromium dot org> --- For reference, clang 10.0.0 manages to do this optimization correctly: 0000000000000000 <test> (File Offset: 0x40): 0: b8 01 00 00 00 mov $0x1,%eax 5: 81 ff 23 45 67 89 cmp $0x89674523,%edi b: 74 08 je 15 <test+0x15> (File Offset: 0x55) d: 81 ff 12 34 56 78 cmp $0x78563412,%edi 13: 75 01 jne 16 <test+0x16> (File Offset: 0x56) 15: c3 retq 16: 31 c0 xor %eax,%eax 18: c3 retq
