cat test.cc
---------
extern int meh(void*);

int foo() {
 int buf[4] = {0x42, 0x43, 0x44, 0x45};
 int x = meh(__builtin_frame_address(0));
 int y = meh(buf);
 return x + y;
}
---------


g++ -c -fPIC -O2 -o test.o test.cc  -fomit-frame-pointer
Disassembly of section .text:

0000000000000000 <_Z3foov>:
   0:	55                   	push   %rbp
   1:	48 89 e5             	mov    %rsp,%rbp
   4:	53                   	push   %rbx
   5:	48 83 ec 18          	sub    $0x18,%rsp
   9:	0f 28 05 00 00 00 00 	movaps 0x0(%rip),%xmm0        # 10 <_Z3foov+0x10>
  10:	0f 29 45 e0          	movaps %xmm0,-0x20(%rbp)
  14:	48 89 ef             	mov    %rbp,%rdi
  17:	e8 00 00 00 00       	callq  1c <_Z3foov+0x1c>
  1c:	89 c3                	mov    %eax,%ebx
  1e:	48 8d 7d e0          	lea    -0x20(%rbp),%rdi
  22:	e8 00 00 00 00       	callq  27 <_Z3foov+0x27>
  27:	01 d8                	add    %ebx,%eax
  29:	48 83 c4 18          	add    $0x18,%rsp
  2d:	5b                   	pop    %rbx
  2e:	5d                   	pop    %rbp
  2f:	c3                   	retq