Hi v8 users,
I am using d8 version 4.7.0 on Ubuntu Linux vivid. I played around with d8
a little bit and used the following command line:
user@debugbox: v8/out/ia32.release/d8 --print_opt_code test.js
Which leads to the following output:
--- Raw source ---
(n)
{
return Math.floor(Math.random() * n);
}
--- Optimized code ---
optimization_id = 0
source_position = 27528
kind = OPTIMIZED_FUNCTION
name = rnd
stack_slots = 2
compiler = crankshaft
Instructions (size = 612)
0x2020e060 0 55 push ebp
0x2020e061 1 89e5 mov ebp,esp
0x2020e063 3 56 push esi
0x2020e064 4 57 push edi
0x2020e065 5 83ec08 sub esp,0x8
0x2020e068 8 50 push eax
0x2020e069 9 c7c002000000 mov eax,0x2
0x2020e06f 15 c70484efdeefbe mov [esp+eax*4],0xbeefdeef
0x2020e076 22 48 dec eax
0x2020e077 23 75f6 jnz 15 (0x2020e06f)
0x2020e079 25 58 pop eax
0x2020e07a 26 c745f400000000 mov [ebp-0xc],0x0
0x2020e081 33 8b45fc mov eax,[ebp-0x4]
0x2020e084 36 8945f0 mov [ebp-0x10],eax
0x2020e087 39 89c6 mov esi,eax
0x2020e089 41 3b25241aa009 cmp esp,[0x9a01a24] ;; external
reference (StackGuard::address_of_jslimit())
0x2020e08f 47 7305 jnc 54 (0x2020e096)
0x2020e091 49 e8ea15321b call StackCheck (0x3b52f680) ;; code:
BUILTIN
0x2020e096 54 b805cfb729 mov eax,0x29b7cf05
[snip]
Is there any way, to print the _original_ javascript code I feeded into v8
(since the raw source here is not the exact same code as the input code),
before printing the optimized, corresponding code?
Thanks!
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