On Sun, 18 Nov 2018 22:50:17 +0100 Rhialto <rhia...@falu.nl> wrote: > On Sun 18 Nov 2018 at 19:04:02 +0000, Sad Clouds wrote: > > Linux (gcc 6.3.0): > > It looks to me like this fragment is not the whole function: > > > Dump of assembler code for function memcpy: > > => 0x00007ffff78a0e90 <+0>: mov %rdi,%rax > > 0x00007ffff78a0e93 <+3>: cmp $0x10,%rdx > > 0x00007ffff78a0e97 <+7>: jb 0x7ffff78a0f77 > > 0x7ffff78a0f77 isn't in the disassembly > > > 0x00007ffff78a0e9d <+13>: cmp $0x20,%rdx > > 0x00007ffff78a0ea1 <+17>: ja 0x7ffff78a0fc6 > > 0x7ffff78a0fc6 neither. > > > 0x00007ffff78a0ea7 <+23>: movups (%rsi),%xmm0 > > 0x00007ffff78a0eaa <+26>: movups -0x10(%rsi,%rdx,1),%xmm1 > > 0x00007ffff78a0eaf <+31>: movups %xmm0,(%rdi) > > 0x00007ffff78a0eb2 <+34>: movups %xmm1,-0x10(%rdi,%rdx,1) > > 0x00007ffff78a0eb7 <+39>: retq > > End of assembler dump.
That's what GDB printed out, not sure why some parts may be missing.