Hello,
I'm exploring v8 disasm or this code:
```
function walkLength(x) {
for(var i=0; i<arr.length; i++) arr[i]++;
}
```
That's what I analyze:
out/ia32.release/d8 --print-opt-code --print_code_verbose --code-comments
in.js > res
In section B4 of walkLength I see:
```
;;; <@48,#40> bounds-check
0x2e34f629 105 3bd1 cmp edx,ecx ;; debug:
position 271
0x2e34f62b 107 0f833e000000 jnc 175 (0x2e34f66f)
;;; <@50,#41> load-keyed
0x2e34f631 113 8b5c5007 mov ebx,[eax+edx*2+0x7]
;;; <@52,#43> add-i
0x2e34f635 117 83c302 add ebx,0x2
0x2e34f638 120 0f8036000000 jo 180 (0x2e34f674)
;;; <@54,#55> store-keyed
0x2e34f63e 126 895c5007 mov [eax+edx*2+0x7],ebx
;;; <@56,#58> add-i
0x2e34f642 130 83c202 add edx,0x2 ;; debug:
position 260
```
The question is: why is it increment as "add ebx, 0x2" on line 117, why not
"add ebx, 0x1" ?
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