Xcode 3.0 gcc compiler output using -O3 (optimize for speed) switch, x86 target:

0x00001f30  <+0096>  mov    eax,DWORD PTR [ecx]
0x00001f32  <+0098>  inc    eax
0x00001f33  <+0099>  mov    DWORD PTR [ecx],eax
0x00001f35  <+0101>  mov    eax,DWORD PTR [ecx+0x4]
0x00001f38  <+0104>  inc    eax
0x00001f39  <+0105>  mov    DWORD PTR [ecx+0x4],eax
0x00001f3c  <+0108>  mov    eax,DWORD PTR [ebx]
0x00001f3e  <+0110>  mov    edx,DWORD PTR [ebx+0x4]
0x00001f41  <+0113>  add    eax,0x1
0x00001f44  <+0116>  adc    edx,0x0
0x00001f47  <+0119>  mov    DWORD PTR [ebx],eax
0x00001f49  <+0121>  mov    DWORD PTR [ebx+0x4],edx
0x00001f4c  <+0124>  mov    eax,DWORD PTR [ebx+0x8]
0x00001f4f  <+0127>  mov    edx,DWORD PTR [ebx+0xc]
0x00001f52  <+0130>  add    eax,0x1
0x00001f55  <+0133>  adc    edx,0x0
0x00001f59  <+0137>  mov    DWORD PTR [ebx+0x8],eax
0x00001f5c  <+0140>  mov    DWORD PTR [ebx+0xc],edx