--- Raw source ---
( nodes ) {
    var sum = 0;
    for (var i = 0; i < nodes.length; i++) {
        sum += nodes[i];
    }
    return sum;
}


--- Optimized code ---
kind = OPTIMIZED_FUNCTION
name = test2
stack_slots = 2
Instructions (size = 430)
24133E80     0  55             push ebp
24133E81     1  89e5           mov ebp,esp
24133E83     3  56             push esi
24133E84     4  57             push edi
24133E85     5  83ec08         sub esp,0x8
                  ;;; Store dynamic frame alignment tag for spilled doubles
24133E88     8  c745f400000000 mov [ebp+0xf4],0x0
                  ;;; <@0,#0> -------------------- B0 --------------------
                  ;;; <@6,#5> context
24133E8F    15  8b45fc         mov eax,[ebp+0xfc]
                  ;;; <@7,#5> gap
24133E92    18  8945f0         mov [ebp+0xf0],eax
                  ;;; <@10,#8> -------------------- B1 --------------------
                  ;;; <@11,#8> gap
24133E95    21  89c6           mov esi,eax
                  ;;; <@12,#10> stack-check
24133E97    23  3b2578386900   cmp esp,[0x693878]
24133E9D    29  7305           jnc 36  (24133EA4)
24133E9F    31  e81ccdfdff     call 24110BC0                 ;; code: STUB, StackCheckStub, minor: 0
                  ;;; <@13,#10> gap
24133EA4    36  8b4508         mov eax,[ebp+0x8]
                  ;;; <@14,#25> check-non-smi
24133EA7    39  f7c001000000   test eax,0x1
24133EAD    45  0f8430010000   jz 355  (24133FE3)
                  ;;; <@16,#26> check-maps
24133EB3    51  8178ffc9c4a02f cmp [eax+0xff],0x2fa0c4c9     ;; object: 2FA0C4C9 <Map(elements=FAST_ELEMENTS)>
24133EBA    58  0f841a000000   jz 90  (24133EDA)
24133EC0    64  8178ff41c5a02f cmp [eax+0xff],0x2fa0c541     ;; object: 2FA0C541 <Map(elements=FAST_SMI_ELEMENTS)>
24133EC7    71  0f840d000000   jz 90  (24133EDA)
24133ECD    77  8178ff91c5a02f cmp [eax+0xff],0x2fa0c591     ;; object: 2FA0C591 <Map(elements=FAST_DOUBLE_ELEMENTS)>
24133ED4    84  0f850e010000   jnz 360  (24133FE8)
                  ;;; <@18,#27> load-named-field
24133EDA    90  8b480b         mov ecx,[eax+0xb]
                  ;;; <@20,#64> tagged-to-i
24133EDD    93  f6c101         test_b cl,0x1
24133EE0    96  0f855c000000   jnz 194  (24133F42)
24133EE6   102  d1f9           sar ecx,1
                  ;;; <@22,#41> check-maps
24133EE8   104  8178ff41c5a02f cmp [eax+0xff],0x2fa0c541     ;; object: 2FA0C541 <Map(elements=FAST_SMI_ELEMENTS)>
24133EEF   111  0f85f8000000   jnz 365  (24133FED)
                  ;;; <@24,#42> load-named-field
24133EF5   117  8b5007         mov edx,[eax+0x7]
                  ;;; <@26,#43> load-named-field
24133EF8   120  8b580b         mov ebx,[eax+0xb]
                  ;;; <@28,#65> smi-untag
24133EFB   123  d1fb           sar ebx,1
                  ;;; <@30,#21> gap
24133EFD   125  33ff           xor edi,edi
24133EFF   127  33f6           xor esi,esi
                  ;;; <@32,#22> -------------------- B2 (loop header) --------------------
                  ;;; <@35,#28> cmp-id-and-branch
24133F01   129  3bf1           cmp esi,ecx
24133F03   131  0f8d29000000   jnl 178  (24133F32)
                  ;;; <@40,#35> -------------------- B4 --------------------
                  ;;; <@42,#37> stack-check
24133F09   137  3b2578386900   cmp esp,[0x693878]
24133F0F   143  0f825c000000   jc 241  (24133F71)
                  ;;; <@44,#44> bounds-check
24133F15   149  3bf3           cmp esi,ebx
24133F17   151  0f83d5000000   jnc 370  (24133FF2)
                  ;;; <@46,#45> load-keyed
24133F1D   157  8b44b207       mov eax,[edx+esi*4+0x7]
                  ;;; <@48,#66> smi-untag
24133F21   161  d1f8           sar eax,1
                  ;;; <@50,#46> add-i
24133F23   163  03c7           add eax,edi
24133F25   165  0f80cc000000   jo 375  (24133FF7)
                  ;;; <@52,#51> add-i
24133F2B   171  83c601         add esi,0x1
                  ;;; <@54,#54> gap
24133F2E   174  89c7           mov edi,eax
                  ;;; <@55,#54> goto
24133F30   176  ebcf           jmp 129  (24133F01)
                  ;;; <@60,#55> -------------------- B6 --------------------
                  ;;; <@61,#55> gap
24133F32   178  89f8           mov eax,edi
                  ;;; <@62,#63> number-tag-i
24133F34   180  03c0           add eax,eax
24133F36   182  0f8048000000   jo 260  (24133F84)
                  ;;; <@64,#58> return
24133F3C   188  89ec           mov esp,ebp
24133F3E   190  5d             pop ebp
24133F3F   191  c20800         ret 0x8
                  ;;; <@20,#64> -------------------- Deferred tagged-to-i --------------------
24133F42   194  8179ff4981a02f cmp [ecx+0xff],0x2fa08149     ;; object: 2FA08149 <Map(elements=FAST_HOLEY_ELEMENTS)>
                  Deferred TaggedToI: not a heap number
24133F49   201  0f85ad000000   jnz 380  (24133FFC)
24133F4F   207  f20f104103     movsd xmm0,[ecx+0x3]
24133F54   212  f20f2cc8       cvttsd2si ecx,xmm0
24133F58   216  f20f2ac9       cvtsi2sd xmm1,ecx
24133F5C   220  660f2ec1       ucomisd xmm0,xmm1
                  Deferred TaggedToI: lost precision
24133F60   224  0f8596000000   jnz 380  (24133FFC)
                  Deferred TaggedToI: NaN
24133F66   230  0f8a90000000   jpe 380  (24133FFC)
24133F6C   236  e977ffffff     jmp 104  (24133EE8)
                  ;;; <@42,#37> -------------------- Deferred stack-check --------------------
24133F71   241  60             pushad
24133F72   242  8b75fc         mov esi,[ebp+0xfc]
24133F75   245  33c0           xor eax,eax
24133F77   247  bb4069e900     mov ebx,00E96940
24133F7C   252  e8bf70ffff     call 2412B040                 ;; code: STUB, CEntryStub, minor: 1
24133F81   257  61             popad
24133F82   258  eb91           jmp 149  (24133F15)
                  ;;; <@62,#63> -------------------- Deferred number-tag-i --------------------
24133F84   260  60             pushad
24133F85   261  d1f8           sar eax,1
24133F87   263  3500000080     xor eax, 80000000
24133F8C   268  f20f2ac0       cvtsi2sd xmm0,eax
24133F90   272  8b054c256900   mov eax,[0x69254c]
24133F96   278  89c1           mov ecx,eax
24133F98   280  83c10c         add ecx,0xc
24133F9B   283  0f821c000000   jc 317  (24133FBD)
24133FA1   289  3b0d50256900   cmp ecx,[0x692550]
24133FA7   295  0f8710000000   ja 317  (24133FBD)
24133FAD   301  890d4c256900   mov [0x69254c],ecx
24133FB3   307  40             inc eax
24133FB4   308  c740ff4981a02f mov [eax+0xff],0x2fa08149     ;; object: 2FA08149 <Map(elements=FAST_HOLEY_ELEMENTS)>
24133FBB   315  eb17           jmp 340  (24133FD4)
24133FBD   317  c744241c00000000 mov [esp+0x1c],0x0
24133FC5   325  8b75fc         mov esi,[ebp+0xfc]
24133FC8   328  33c0           xor eax,eax
24133FCA   330  bbe050e900     mov ebx,00E950E0
24133FCF   335  e86c70ffff     call 2412B040                 ;; code: STUB, CEntryStub, minor: 1
24133FD4   340  f20f114003     movsd [eax+0x3],xmm0
24133FD9   345  8944241c       mov [esp+0x1c],eax
24133FDD   349  61             popad
24133FDE   350  e959ffffff     jmp 188  (24133F3C)
                  ;;; -------------------- Jump table --------------------
                  ;;; jump table entry 0: deoptimization bailout 1.
24133FE3   355  e922606de8     jmp 0C80A00A                  ;; deoptimization bailout 1
                  ;;; jump table entry 1: deoptimization bailout 2.
24133FE8   360  e927606de8     jmp 0C80A014                  ;; deoptimization bailout 2
                  ;;; jump table entry 2: deoptimization bailout 3.
24133FED   365  e92c606de8     jmp 0C80A01E                  ;; deoptimization bailout 3
                  ;;; jump table entry 3: deoptimization bailout 5.
24133FF2   370  e93b606de8     jmp 0C80A032                  ;; deoptimization bailout 5
                  ;;; jump table entry 4: deoptimization bailout 6.
24133FF7   375  e940606de8     jmp 0C80A03C                  ;; deoptimization bailout 6
                  ;;; jump table entry 5: deoptimization bailout 7.
24133FFC   380  e945606de8     jmp 0C80A046                  ;; deoptimization bailout 7
24134001   385  90             nop
24134002   386  90             nop
24134003   387  90             nop
24134004   388  90             nop
24134005   389  90             nop
24134006   390  66             nop
24134007   391  90             nop
                  ;;; Safepoint table.



--- Raw source ---
( nodes ) {
    var sum = 0;
    var len = nodes.length;
    for (var i = 0; i < len; i++) {
        sum += nodes[i];
    }
    return sum;
}


--- Optimized code ---
kind = OPTIMIZED_FUNCTION
name = test1
stack_slots = 3
Instructions (size = 438)
24134200     0  55             push ebp
24134201     1  89e5           mov ebp,esp
24134203     3  56             push esi
24134204     4  57             push edi
24134205     5  83ec0c         sub esp,0xc
                  ;;; Store dynamic frame alignment tag for spilled doubles
24134208     8  c745f400000000 mov [ebp+0xf4],0x0
                  ;;; <@0,#0> -------------------- B0 --------------------
                  ;;; <@6,#5> context
2413420F    15  8b45fc         mov eax,[ebp+0xfc]
                  ;;; <@7,#5> gap
24134212    18  8945f0         mov [ebp+0xf0],eax
                  ;;; <@10,#8> -------------------- B1 --------------------
                  ;;; <@11,#8> gap
24134215    21  89c6           mov esi,eax
                  ;;; <@12,#10> stack-check
24134217    23  3b2578386900   cmp esp,[0x693878]
2413421D    29  7305           jnc 36  (24134224)
2413421F    31  e89cc9fdff     call 24110BC0                 ;; code: STUB, StackCheckStub, minor: 0
                  ;;; <@13,#10> gap
24134224    36  8b4508         mov eax,[ebp+0x8]
                  ;;; <@14,#14> check-non-smi
24134227    39  f7c001000000   test eax,0x1
2413422D    45  0f843a010000   jz 365  (2413436D)
                  ;;; <@16,#15> check-maps
24134233    51  8178ffc9c4a02f cmp [eax+0xff],0x2fa0c4c9     ;; object: 2FA0C4C9 <Map(elements=FAST_ELEMENTS)>
2413423A    58  0f841a000000   jz 90  (2413425A)
24134240    64  8178ff41c5a02f cmp [eax+0xff],0x2fa0c541     ;; object: 2FA0C541 <Map(elements=FAST_SMI_ELEMENTS)>
24134247    71  0f840d000000   jz 90  (2413425A)
2413424D    77  8178ff91c5a02f cmp [eax+0xff],0x2fa0c591     ;; object: 2FA0C591 <Map(elements=FAST_DOUBLE_ELEMENTS)>
24134254    84  0f8518010000   jnz 370  (24134372)
                  ;;; <@18,#16> load-named-field
2413425A    90  8b480b         mov ecx,[eax+0xb]
                  ;;; <@19,#16> gap
2413425D    93  89ca           mov edx,ecx
                  ;;; <@20,#65> tagged-to-i
2413425F    95  f6c201         test_b dl,0x1
24134262    98  0f8564000000   jnz 204  (241342CC)
24134268   104  d1fa           sar edx,1
                  ;;; <@22,#44> check-maps
2413426A   106  8178ff41c5a02f cmp [eax+0xff],0x2fa0c541     ;; object: 2FA0C541 <Map(elements=FAST_SMI_ELEMENTS)>
24134271   113  0f8500010000   jnz 375  (24134377)
                  ;;; <@24,#45> load-named-field
24134277   119  8b5807         mov ebx,[eax+0x7]
                  ;;; <@26,#46> load-named-field
2413427A   122  8b700b         mov esi,[eax+0xb]
                  ;;; <@28,#68> smi-untag
2413427D   125  d1fe           sar esi,1
                  ;;; <@30,#27> gap
2413427F   127  c745ec00000000 mov [ebp+0xec],0x0
24134286   134  33ff           xor edi,edi
                  ;;; <@32,#28> -------------------- B2 (loop header) --------------------
                  ;;; <@35,#31> cmp-id-and-branch
24134288   136  3bfa           cmp edi,edx
2413428A   138  0f8d2b000000   jnl 187  (241342BB)
                  ;;; <@40,#38> -------------------- B4 --------------------
                  ;;; <@42,#40> stack-check
24134290   144  3b2578386900   cmp esp,[0x693878]
24134296   150  0f825f000000   jc 251  (241342FB)
                  ;;; <@44,#47> bounds-check
2413429C   156  3bfe           cmp edi,esi
2413429E   158  0f83d8000000   jnc 380  (2413437C)
                  ;;; <@46,#48> load-keyed
241342A4   164  8b44bb07       mov eax,[ebx+edi*4+0x7]
                  ;;; <@48,#69> smi-untag
241342A8   168  d1f8           sar eax,1
                  ;;; <@50,#49> add-i
241342AA   170  0345ec         add eax,[ebp+0xec]
241342AD   173  0f80ce000000   jo 385  (24134381)
                  ;;; <@52,#54> add-i
241342B3   179  83c701         add edi,0x1
                  ;;; <@54,#57> gap
241342B6   182  8945ec         mov [ebp+0xec],eax
                  ;;; <@55,#57> goto
241342B9   185  ebcd           jmp 136  (24134288)
                  ;;; <@60,#58> -------------------- B6 --------------------
                  ;;; <@61,#58> gap
241342BB   187  8b45ec         mov eax,[ebp+0xec]
                  ;;; <@62,#67> number-tag-i
241342BE   190  03c0           add eax,eax
241342C0   192  0f8048000000   jo 270  (2413430E)
                  ;;; <@64,#61> return
241342C6   198  89ec           mov esp,ebp
241342C8   200  5d             pop ebp
241342C9   201  c20800         ret 0x8
                  ;;; <@20,#65> -------------------- Deferred tagged-to-i --------------------
241342CC   204  817aff4981a02f cmp [edx+0xff],0x2fa08149     ;; object: 2FA08149 <Map(elements=FAST_HOLEY_ELEMENTS)>
                  Deferred TaggedToI: not a heap number
241342D3   211  0f85ad000000   jnz 390  (24134386)
241342D9   217  f20f104203     movsd xmm0,[edx+0x3]
241342DE   222  f20f2cd0       cvttsd2si edx,xmm0
241342E2   226  f20f2aca       cvtsi2sd xmm1,edx
241342E6   230  660f2ec1       ucomisd xmm0,xmm1
                  Deferred TaggedToI: lost precision
241342EA   234  0f8596000000   jnz 390  (24134386)
                  Deferred TaggedToI: NaN
241342F0   240  0f8a90000000   jpe 390  (24134386)
241342F6   246  e96fffffff     jmp 106  (2413426A)
                  ;;; <@42,#40> -------------------- Deferred stack-check --------------------
241342FB   251  60             pushad
241342FC   252  8b75fc         mov esi,[ebp+0xfc]
241342FF   255  33c0           xor eax,eax
24134301   257  bb4069e900     mov ebx,00E96940
24134306   262  e8356dffff     call 2412B040                 ;; code: STUB, CEntryStub, minor: 1
2413430B   267  61             popad
2413430C   268  eb8e           jmp 156  (2413429C)
                  ;;; <@62,#67> -------------------- Deferred number-tag-i --------------------
2413430E   270  60             pushad
2413430F   271  d1f8           sar eax,1
24134311   273  3500000080     xor eax, 80000000
24134316   278  f20f2ac0       cvtsi2sd xmm0,eax
2413431A   282  8b054c256900   mov eax,[0x69254c]
24134320   288  89c1           mov ecx,eax
24134322   290  83c10c         add ecx,0xc
24134325   293  0f821c000000   jc 327  (24134347)
2413432B   299  3b0d50256900   cmp ecx,[0x692550]
24134331   305  0f8710000000   ja 327  (24134347)
24134337   311  890d4c256900   mov [0x69254c],ecx
2413433D   317  40             inc eax
2413433E   318  c740ff4981a02f mov [eax+0xff],0x2fa08149     ;; object: 2FA08149 <Map(elements=FAST_HOLEY_ELEMENTS)>
24134345   325  eb17           jmp 350  (2413435E)
24134347   327  c744241c00000000 mov [esp+0x1c],0x0
2413434F   335  8b75fc         mov esi,[ebp+0xfc]
24134352   338  33c0           xor eax,eax
24134354   340  bbe050e900     mov ebx,00E950E0
24134359   345  e8e26cffff     call 2412B040                 ;; code: STUB, CEntryStub, minor: 1
2413435E   350  f20f114003     movsd [eax+0x3],xmm0
24134363   355  8944241c       mov [esp+0x1c],eax
24134367   359  61             popad
24134368   360  e959ffffff     jmp 198  (241342C6)
                  ;;; -------------------- Jump table --------------------
                  ;;; jump table entry 0: deoptimization bailout 1.
2413436D   365  e9985c6de8     jmp 0C80A00A                  ;; deoptimization bailout 1
                  ;;; jump table entry 1: deoptimization bailout 2.
24134372   370  e99d5c6de8     jmp 0C80A014                  ;; deoptimization bailout 2
                  ;;; jump table entry 2: deoptimization bailout 3.
24134377   375  e9a25c6de8     jmp 0C80A01E                  ;; deoptimization bailout 3
                  ;;; jump table entry 3: deoptimization bailout 5.
2413437C   380  e9b15c6de8     jmp 0C80A032                  ;; deoptimization bailout 5
                  ;;; jump table entry 4: deoptimization bailout 6.
24134381   385  e9b65c6de8     jmp 0C80A03C                  ;; deoptimization bailout 6
                  ;;; jump table entry 5: deoptimization bailout 7.
24134386   390  e9bb5c6de8     jmp 0C80A046                  ;; deoptimization bailout 7
2413438B   395  90             nop
2413438C   396  90             nop
2413438D   397  90             nop
2413438E   398  90             nop
2413438F   399  90             nop
                  ;;; Safepoint table.