candidates/f1_mul_first.o: file format elf64-x86-64 Disassembly of section .text: 0000000000000000 : 0: 85 ff testl %edi, %edi 2: 74 09 je 0xd 4: 29 fe subl %edi, %esi 6: 6b c6 64 imull $0x64, %esi, %eax 9: 99 cltd a: f7 ff idivl %edi c: c3 retq d: 31 c0 xorl %eax, %eax f: c3 retq