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--- Raw source ---

function a(foo) {\x0a return;\x0a return foo;\x0a}\x0a\x0afunction b(foo) {\x0a foo = foo;\x0a}\x0a

--- Code ---

source_position = 0

kind = FUNCTION

Instructions (size = 88)

Instructions (size = 108)

0x5784c660 0 8b4c2404 mov ecx,[esp+0x4]

0x3fa4c660 0 8b4c2404 mov ecx,[esp+0x4]

0x5784c664 4 81f9918040f6 cmp ecx,0xf6408091 ;; object: 0xf6408091 <undefined>

0x5784c66a 10 750a jnz 22 (0x5784c676)

0x5784c66c 12 8b4e13 mov ecx,[esi+0x13]

0x5784c66f 15 8b4917 mov ecx,[ecx+0x17]

0x5784c672 18 894c2404 mov [esp+0x4],ecx

0x5784c676 22 55 push ebp

0x5784c677 23 89e5 mov ebp,esp

0x5784c679 25 56 push esi

0x5784c67a 26 57 push edi

0x5784c67b 27 3b251851a609 cmp esp,[0x9a65118]

0x5784c681 33 7305 jnc 40 (0x5784c688)

0x5784c683 35 e838f2fdff call StackCheck (0x5782b8c0) ;; debug: statement 0

;; code: BUILTIN

0x5784c688 40 b8918040f6 mov eax,0xf6408091 ;; object: 0xf6408091 <undefined>

0x5784c68d 45 bb61858033 mov ebx,0x33808561 ;; object: 0x33808561 Cell for 6144

0x3fa4c664 4 81f991809056 cmp ecx,0x56908091 ;; object: 0x56908091 <undefined>

0x3fa4c66a 10 750a jnz 22 (0x3fa4c676)

0x3fa4c66c 12 8b4e13 mov ecx,[esi+0x13]

0x3fa4c66f 15 8b4917 mov ecx,[ecx+0x17]

0x3fa4c672 18 894c2404 mov [esp+0x4],ecx

0x3fa4c676 22 55 push ebp

0x3fa4c677 23 89e5 mov ebp,esp

0x5784c692 50 836b035e sub [ebx+0x3],0x5e

0x3fa4c679 25 56 push esi

0x5784c696 54 7913 jns 75 (0x5784c6ab)

0x3fa4c67a 26 57 push edi

0x5784c698 56 50 push eax

0x3fa4c67b 27 56 push esi

0x3fa4c67c 28 6869cd9356 push 0x5693cd69 ;; object: 0x5693cd69 <FixedArray[4]>

0x3fa4c681 33 6a00 push 0x0

0x3fa4c683 35 b803000000 mov eax,0x3

0x3fa4c688 40 bb40332f08 mov ebx,0x82f3340

0x3fa4c68d 45 e8ceddfbff call 0x3fa0a460 ;; debug: statement 0

;; code: STUB, CEntryStub, minor: 0

0x3fa4c692 50 3b2518f1100b cmp esp,[0xb10f118]

0x3fa4c698 56 7305 jnc 63 (0x3fa4c69f)

0x3fa4c69a 58 e821f2fdff call StackCheck (0x3fa2b8c0) ;; code: BUILTIN

0x3fa4c69f 63 b891809056 mov eax,0x56908091 ;; object: 0x56908091 <undefined>

0x3fa4c6a4 68 bb6185005d mov ebx,0x5d008561 ;; object: 0x5d008561 Cell for 6144

0x3fa4c6a9 73 836b035e sub [ebx+0x3],0x5e

0x5784c699 57 e882f2fdff call InterruptCheck (0x5782b920) ;; code: BUILTIN

0x3fa4c6ad 77 7913 jns 98 (0x3fa4c6c2)

0x5784c69e 62 58 pop eax

0x3fa4c6af 79 50 push eax

0x5784c69f 63 bb61858033 mov ebx,0x33808561 ;; object: 0x33808561 Cell for 6144

0x3fa4c6b0 80 e86bf2fdff call InterruptCheck (0x3fa2b920) ;; code: BUILTIN

0x5784c6a4 68 c7430300300000 mov [ebx+0x3],0x3000

0x3fa4c6b5 85 58 pop eax

0x5784c6ab 75 89ec mov esp,ebp ;; js return

0x3fa4c6b6 86 bb6185005d mov ebx,0x5d008561 ;; object: 0x5d008561 Cell for 6144

0x5784c6ad 77 5d pop ebp

0x3fa4c6bb 91 c7430300300000 mov [ebx+0x3],0x3000

0x5784c6ae 78 c20400 ret 0x4

0x5784c6b1 81 0f1f00 nop

0x3fa4c6c2 98 89ec mov esp,ebp ;; debug: position 83

;; js return

0x3fa4c6c4 100 5d pop ebp

0x3fa4c6c5 101 c20400 ret 0x4

Deoptimization Output Data (deopt points = 0)

Back edges (size = 0)

ast_id pc_offset loop_depth

0xf643cca9: [TypeFeedbackInfo]

0x5693cd81: [TypeFeedbackInfo]

- ic_total_count: 0, ic_with_type_info_count: 0

RelocInfo (size = 10)

RelocInfo (size = 19)

0x5784c666 embedded object (0xf6408091 <undefined>)

0x3fa4c666 embedded object (0x56908091 <undefined>)

0x3fa4c67d embedded object (0x5693cd69 <FixedArray[4]>)

0x5784c683 statement position (0)

0x3fa4c68d statement position (0)

0x3fa4c68e code target (STUB) (0x3fa0a460)

0x5784c684 code target (BUILTIN) (0x5782b8c0)

0x3fa4c69b code target (BUILTIN) (0x3fa2b8c0)

0x5784c689 embedded object (0xf6408091 <undefined>)

0x3fa4c6a0 embedded object (0x56908091 <undefined>)

0x5784c68e embedded object (0x33808561 Cell for 6144)

0x3fa4c6a5 embedded object (0x5d008561 Cell for 6144)

0x5784c69a code target (BUILTIN) (0x5782b920)

0x3fa4c6b1 code target (BUILTIN) (0x3fa2b920)

0x5784c6a0 embedded object (0x33808561 Cell for 6144)

0x3fa4c6b7 embedded object (0x5d008561 Cell for 6144)

0x3fa4c6c2 position (83)

0x5784c6ab js return

0x3fa4c6c2 js return

已保存差異

原始文本

開啟檔案

--- Raw source ---

--- Code ---
source_position = 0
kind = FUNCTION
Instructions (size = 88)
0x5784c660     0  8b4c2404       mov ecx,[esp+0x4]
0x5784c664     4  81f9918040f6   cmp ecx,0xf6408091          ;; object: 0xf6408091 <undefined>
0x5784c66a    10  750a           jnz 22  (0x5784c676)

0x5784c66c    12  8b4e13         mov ecx,[esi+0x13]
0x5784c66f    15  8b4917         mov ecx,[ecx+0x17]
0x5784c672    18  894c2404       mov [esp+0x4],ecx
0x5784c676    22  55             push ebp

0x5784c677    23  89e5           mov ebp,esp
0x5784c679    25  56             push esi
0x5784c67a    26  57             push edi
0x5784c67b    27  3b251851a609   cmp esp,[0x9a65118]
0x5784c681    33  7305           jnc 40  (0x5784c688)
0x5784c683    35  e838f2fdff     call StackCheck  (0x5782b8c0)    ;; debug: statement 0
                                                             ;; code: BUILTIN
0x5784c688    40  b8918040f6     mov eax,0xf6408091          ;; object: 0xf6408091 <undefined>
0x5784c68d    45  bb61858033     mov ebx,0x33808561          ;; object: 0x33808561 Cell for 6144

0x5784c692    50  836b035e       sub [ebx+0x3],0x5e
0x5784c696    54  7913           jns 75  (0x5784c6ab)
0x5784c698    56  50             push eax

0x5784c699    57  e882f2fdff     call InterruptCheck  (0x5782b920)    ;; code: BUILTIN
0x5784c69e    62  58             pop eax
0x5784c69f    63  bb61858033     mov ebx,0x33808561          ;; object: 0x33808561 Cell for 6144

0x5784c6a4    68  c7430300300000 mov [ebx+0x3],0x3000
0x5784c6ab    75  89ec           mov esp,ebp                 ;; js return
0x5784c6ad    77  5d             pop ebp
0x5784c6ae    78  c20400         ret 0x4
0x5784c6b1    81  0f1f00         nop

Deoptimization Output Data (deopt points = 0)

Back edges (size = 0)
ast_id  pc_offset  loop_depth

0xf643cca9: [TypeFeedbackInfo]
 - ic_total_count: 0, ic_with_type_info_count: 0

RelocInfo (size = 10)
0x5784c666  embedded object  (0xf6408091 <undefined>)

0x5784c683  statement position  (0)

0x5784c684  code target (BUILTIN)  (0x5782b8c0)
0x5784c689  embedded object  (0xf6408091 <undefined>)
0x5784c68e  embedded object  (0x33808561 Cell for 6144)
0x5784c69a  code target (BUILTIN)  (0x5782b920)
0x5784c6a0  embedded object  (0x33808561 Cell for 6144)

0x5784c6ab  js return

更改後文本

開啟檔案

--- Raw source ---

function a(foo) {\x0a    return;\x0a    return foo;\x0a}\x0a\x0afunction b(foo) {\x0a    foo = foo;\x0a}\x0a

--- Code ---
source_position = 0
kind = FUNCTION
Instructions (size = 108)
0x3fa4c660     0  8b4c2404       mov ecx,[esp+0x4]

0x3fa4c664     4  81f991809056   cmp ecx,0x56908091          ;; object: 0x56908091 <undefined>
0x3fa4c66a    10  750a           jnz 22  (0x3fa4c676)
0x3fa4c66c    12  8b4e13         mov ecx,[esi+0x13]
0x3fa4c66f    15  8b4917         mov ecx,[ecx+0x17]
0x3fa4c672    18  894c2404       mov [esp+0x4],ecx

0x3fa4c676    22  55             push ebp
0x3fa4c677    23  89e5           mov ebp,esp

0x3fa4c679    25  56             push esi
0x3fa4c67a    26  57             push edi
0x3fa4c67b    27  56             push esi
0x3fa4c67c    28  6869cd9356     push 0x5693cd69             ;; object: 0x5693cd69 <FixedArray[4]>
0x3fa4c681    33  6a00           push 0x0
0x3fa4c683    35  b803000000     mov eax,0x3
0x3fa4c688    40  bb40332f08     mov ebx,0x82f3340
0x3fa4c68d    45  e8ceddfbff     call 0x3fa0a460             ;; debug: statement 0
                                                             ;; code: STUB, CEntryStub, minor: 0
0x3fa4c692    50  3b2518f1100b   cmp esp,[0xb10f118]
0x3fa4c698    56  7305           jnc 63  (0x3fa4c69f)
0x3fa4c69a    58  e821f2fdff     call StackCheck  (0x3fa2b8c0)    ;; code: BUILTIN
0x3fa4c69f    63  b891809056     mov eax,0x56908091          ;; object: 0x56908091 <undefined>
0x3fa4c6a4    68  bb6185005d     mov ebx,0x5d008561          ;; object: 0x5d008561 Cell for 6144
0x3fa4c6a9    73  836b035e       sub [ebx+0x3],0x5e

0x3fa4c6ad    77  7913           jns 98  (0x3fa4c6c2)
0x3fa4c6af    79  50             push eax
0x3fa4c6b0    80  e86bf2fdff     call InterruptCheck  (0x3fa2b920)    ;; code: BUILTIN

0x3fa4c6b5    85  58             pop eax
0x3fa4c6b6    86  bb6185005d     mov ebx,0x5d008561          ;; object: 0x5d008561 Cell for 6144
0x3fa4c6bb    91  c7430300300000 mov [ebx+0x3],0x3000

0x3fa4c6c2    98  89ec           mov esp,ebp                 ;; debug: position 83
                                                             ;; js return
0x3fa4c6c4   100  5d             pop ebp
0x3fa4c6c5   101  c20400         ret 0x4

Deoptimization Output Data (deopt points = 0)

Back edges (size = 0)
ast_id  pc_offset  loop_depth

0x5693cd81: [TypeFeedbackInfo]
 - ic_total_count: 0, ic_with_type_info_count: 0

RelocInfo (size = 19)
0x3fa4c666  embedded object  (0x56908091 <undefined>)
0x3fa4c67d  embedded object  (0x5693cd69 <FixedArray[4]>)
0x3fa4c68d  statement position  (0)
0x3fa4c68e  code target (STUB)  (0x3fa0a460)
0x3fa4c69b  code target (BUILTIN)  (0x3fa2b8c0)
0x3fa4c6a0  embedded object  (0x56908091 <undefined>)
0x3fa4c6a5  embedded object  (0x5d008561 Cell for 6144)
0x3fa4c6b1  code target (BUILTIN)  (0x3fa2b920)
0x3fa4c6b7  embedded object  (0x5d008561 Cell for 6144)
0x3fa4c6c2  position  (83)
0x3fa4c6c2  js return