lldb выдает ассемблерный листинг

mkam@localhost /var/tmp/portage/llvm $ gdb ./a.out 
GNU gdb (Gentoo 7.6.2 p1) 7.6.2
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /var/tmp/portage/llvm/a.out...done.
(gdb) start
Temporary breakpoint 1 at 0x40094f: file main.cpp, line 5.
Starting program: /var/tmp/portage/llvm/./a.out 
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?

Temporary breakpoint 1, main () at main.cpp:5
5	    std::cout << "Fuck off, World" << std::endl;
(gdb) 

mkam@localhost /var/tmp/portage/llvm $ ~/opt/clang-3.4.2-release/bin/lldb a.out 
Current executable set to 'a.out' (x86_64).
(lldb) process launch --stop-at-entry 
Process 21840 launched: '/var/tmp/portage/llvm/a.out' (x86_64)
Process 21840 launching
Process 21840 stopped
* thread #1: tid = 21840, 0x00007f2618881400, name = 'a.out', stop reason = trace
    frame #0: 0x00007f2618881400
-> 0x7f2618881400:  movq   %rsp, %rdi
   0x7f2618881403:  callq  0x7f26188849e0
   0x7f2618881408:  movq   %rax, %r12
   0x7f261888140b:  movl   0x21f8c7(%rip), %eax
(lldb) breakpoint set -n main
Breakpoint 1: where = a.out`main + 31 at main.cpp:5, address = 0x000000000040094f
(lldb) thread continue 
Resuming thread 0x5550 in process 21840
Process 21840 resuming
Process 21840 stopped
* thread #1: tid = 21840, 0x000000000040094f a.out`main + 31 at main.cpp:5, name = 'a.out', stop reason = breakpoint 1.1
    frame #0: 0x000000000040094f a.out`main + 31 at main.cpp:5
   2   	
   3   	int main()
   4   	{
-> 5   	    std::cout << "Fuck off, World" << std::endl;
   6   	
   7   	    return 0;
   8   	}