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| --- Raw source --- | |
| (arr, index) { | |
| return arr[index]; | |
| } | |
| --- Optimized code --- | |
| optimization_id = 0 | |
| source_position = 15 | |
| kind = OPTIMIZED_FUNCTION | |
| name = elemAt | |
| stack_slots = 6 | |
| compiler = turbofan | |
| Instructions (size = 327) | |
| -- <elemAt.js:1:16> -- | |
| -- B0 start (construct frame) -- | |
| 0x1aa58ba04220 0 55 push rbp | |
| 0x1aa58ba04221 1 4889e5 REX.W movq rbp,rsp | |
| 0x1aa58ba04224 4 56 push rsi | |
| 0x1aa58ba04225 5 57 push rdi | |
| 0x1aa58ba04226 6 4883ec10 REX.W subq rsp,0x10 | |
| 0x1aa58ba0422a 10 493ba5700c0000 REX.W cmpq rsp,[r13+0xc70] | |
| 0x1aa58ba04231 17 0f8675000000 jna 140 (0x1aa58ba042ac) | |
| -- B2 start -- | |
| -- B3 start -- | |
| -- <elemAt.js:2:14> -- | |
| 0x1aa58ba04237 23 488b4518 REX.W movq rax,[rbp+0x18] | |
| 0x1aa58ba0423b 27 a801 test al,0x1 | |
| 0x1aa58ba0423d 29 0f84e3000000 jz 262 (0x1aa58ba04326) | |
| 0x1aa58ba04243 35 48bb793c503e5d080000 REX.W movq rbx,0x85d3e503c79 ;; object: 0x85d3e503c79 <Map(FAST_SMI_ELEMENTS)> | |
| 0x1aa58ba0424d 45 483958ff REX.W cmpq [rax-0x1],rbx | |
| 0x1aa58ba04251 49 0f85d4000000 jnz 267 (0x1aa58ba0432b) | |
| 0x1aa58ba04257 55 488b580f REX.W movq rbx,[rax+0xf] | |
| 0x1aa58ba0425b 59 488b5017 REX.W movq rdx,[rax+0x17] | |
| 0x1aa58ba0425f 63 488b4d10 REX.W movq rcx,[rbp+0x10] | |
| 0x1aa58ba04263 67 f6c101 testb rcx,0x1 | |
| 0x1aa58ba04266 70 0f855a000000 jnz 166 (0x1aa58ba042c6) | |
| -- B8 start -- | |
| 0x1aa58ba0426c 76 488bf1 REX.W movq rsi,rcx | |
| 0x1aa58ba0426f 79 48c1ee20 REX.W shrq rsi, 32 | |
| -- B9 start (deconstruct frame) -- | |
| 0x1aa58ba04273 83 48c1ea20 REX.W shrq rdx, 32 | |
| 0x1aa58ba04277 87 8bfe movl rdi,rsi | |
| 0x1aa58ba04279 89 49ba0000000001000000 REX.W movq r10,0x100000000 | |
| 0x1aa58ba04283 99 4c3bd7 REX.W cmpq r10,rdi | |
| 0x1aa58ba04286 102 7310 jnc 120 (0x1aa58ba04298) | |
| Abort message: | |
| 32 bit value in register is not zero-extended | |
| 0x1aa58ba04288 104 48ba0000000001000000 REX.W movq rdx,0x100000000 | |
| 0x1aa58ba04292 114 e889fedfff call Abort (0x1aa58b804120) ;; code: BUILTIN | |
| 0x1aa58ba04297 119 cc int3l | |
| 0x1aa58ba04298 120 3bf2 cmpl rsi,rdx | |
| 0x1aa58ba0429a 122 0f8390000000 jnc 272 (0x1aa58ba04330) | |
| 0x1aa58ba042a0 128 488b44fb0f REX.W movq rax,[rbx+rdi*8+0xf] | |
| -- <elemAt.js:3:1> -- | |
| 0x1aa58ba042a5 133 488be5 REX.W movq rsp,rbp | |
| 0x1aa58ba042a8 136 5d pop rbp | |
| 0x1aa58ba042a9 137 c21800 ret 0x18 | |
| -- B10 start (no frame) -- | |
| -- B1 start (deferred) -- | |
| -- <elemAt.js:1:16> -- | |
| 0x1aa58ba042ac 140 48bb00f6900701000000 REX.W movq rbx,0x10790f600 ;; external reference (Runtime::StackGuard) | |
| 0x1aa58ba042b6 150 33c0 xorl rax,rax | |
| 0x1aa58ba042b8 152 488b75f8 REX.W movq rsi,[rbp-0x8] | |
| 0x1aa58ba042bc 156 e8dffedfff call 0x1aa58b8041a0 ;; code: STUB, CEntryStub, minor: 8 | |
| 0x1aa58ba042c1 161 e971ffffff jmp 23 (0x1aa58ba04237) | |
| -- B4 start (deferred) -- | |
| -- <elemAt.js:2:14> -- | |
| 0x1aa58ba042c6 166 488b41ff REX.W movq rax,[rcx-0x1] | |
| 0x1aa58ba042ca 170 49394550 REX.W cmpq [r13+0x50],rax | |
| 0x1aa58ba042ce 174 0f8561000000 jnz 277 (0x1aa58ba04335) | |
| 0x1aa58ba042d4 180 c5fb104107 vmovsd xmm0,[rcx+0x7] | |
| 0x1aa58ba042d9 185 c5fb2cf0 vcvttsd2si rsi,xmm0 | |
| 0x1aa58ba042dd 189 c5f157c9 vxorpd xmm1,xmm1,xmm1 | |
| 0x1aa58ba042e1 193 c5f32ace vcvtlsi2sd xmm1,xmm1,rsi | |
| 0x1aa58ba042e5 197 c5f92ec8 vucomisd xmm1,xmm0 | |
| 0x1aa58ba042e9 201 0f8a4b000000 jpe 282 (0x1aa58ba0433a) | |
| 0x1aa58ba042ef 207 0f8545000000 jnz 282 (0x1aa58ba0433a) | |
| 0x1aa58ba042f5 213 48895de8 REX.W movq [rbp-0x18],rbx | |
| 0x1aa58ba042f9 217 488955e0 REX.W movq [rbp-0x20],rdx | |
| 0x1aa58ba042fd 221 83fe00 cmpl rsi,0x0 | |
| 0x1aa58ba04300 224 0f850f000000 jnz 245 (0x1aa58ba04315) | |
| -- B5 start (deferred) -- | |
| -- B6 start (deferred) -- | |
| 0x1aa58ba04306 230 660f3a16c001 pextrd rax,xmm0,1 | |
| 0x1aa58ba0430c 236 83f800 cmpl rax,0x0 | |
| 0x1aa58ba0430f 239 0f8c2a000000 jl 287 (0x1aa58ba0433f) | |
| -- B7 start (deferred) -- | |
| 0x1aa58ba04315 245 488b5de8 REX.W movq rbx,[rbp-0x18] | |
| 0x1aa58ba04319 249 488b4518 REX.W movq rax,[rbp+0x18] | |
| 0x1aa58ba0431d 253 488b55e0 REX.W movq rdx,[rbp-0x20] | |
| 0x1aa58ba04321 257 e94dffffff jmp 83 (0x1aa58ba04273) | |
| 0x1aa58ba04326 262 e8d5fcc7ff call 0x1aa58b684000 ;; debug: deopt position, script offset '43' | |
| ;; debug: deopt position, inlining id '-1' | |
| ;; debug: deopt reason 'Smi' | |
| ;; debug: deopt index 0 | |
| ;; deoptimization bailout 0 | |
| 0x1aa58ba0432b 267 e8dafcc7ff call 0x1aa58b68400a ;; debug: deopt position, script offset '43' | |
| ;; debug: deopt position, inlining id '-1' | |
| ;; debug: deopt reason 'wrong map' | |
| ;; debug: deopt index 1 | |
| ;; deoptimization bailout 1 | |
| 0x1aa58ba04330 272 e8dffcc7ff call 0x1aa58b684014 ;; debug: deopt position, script offset '43' | |
| ;; debug: deopt position, inlining id '-1' | |
| ;; debug: deopt reason 'out of bounds' | |
| ;; debug: deopt index 2 | |
| ;; deoptimization bailout 2 | |
| 0x1aa58ba04335 277 e8eefcc7ff call 0x1aa58b684028 ;; debug: deopt position, script offset '43' | |
| ;; debug: deopt position, inlining id '-1' | |
| ;; debug: deopt reason 'not a heap number' | |
| ;; debug: deopt index 4 | |
| ;; deoptimization bailout 4 | |
| 0x1aa58ba0433a 282 e8f3fcc7ff call 0x1aa58b684032 ;; debug: deopt position, script offset '43' | |
| ;; debug: deopt position, inlining id '-1' | |
| ;; debug: deopt reason 'lost precision or NaN' | |
| ;; debug: deopt index 5 | |
| ;; deoptimization bailout 5 | |
| 0x1aa58ba0433f 287 e8f8fcc7ff call 0x1aa58b68403c ;; debug: deopt position, script offset '43' | |
| ;; debug: deopt position, inlining id '-1' | |
| ;; debug: deopt reason 'minus zero' | |
| ;; debug: deopt index 6 | |
| ;; deoptimization bailout 6 | |
| 0x1aa58ba04344 292 90 nop | |
| 0x1aa58ba04345 293 90 nop | |
| 0x1aa58ba04346 294 90 nop | |
| 0x1aa58ba04347 295 90 nop | |
| 0x1aa58ba04348 296 90 nop | |
| 0x1aa58ba04349 297 90 nop | |
| 0x1aa58ba0434a 298 90 nop | |
| 0x1aa58ba0434b 299 90 nop | |
| 0x1aa58ba0434c 300 90 nop | |
| 0x1aa58ba0434d 301 90 nop | |
| 0x1aa58ba0434e 302 90 nop | |
| 0x1aa58ba0434f 303 90 nop | |
| 0x1aa58ba04350 304 90 nop | |
| 0x1aa58ba04351 305 0f1f00 nop | |
| ;;; Safepoint table. | |
| Source positions: | |
| pc offset position | |
| 0 15 | |
| 23 43 | |
| 133 51 | |
| 140 15 | |
| 166 43 | |
| Inlined functions (count = 0) | |
| Deoptimization Input Data (deopt points = 7) | |
| index ast id argc pc | |
| 0 0 0 -1 | |
| 1 0 0 -1 | |
| 2 0 0 -1 | |
| 3 0 0 161 | |
| 4 0 0 -1 | |
| 5 0 0 -1 | |
| 6 0 0 -1 | |
| Safepoints (size = 19) | |
| 0x1aa58ba042c1 161 000000 (sp -> fp) 3 | |
| RelocInfo (size = 329) | |
| 0x1aa58ba04220 comment (-- <elemAt.js:1:16> --) | |
| 0x1aa58ba04220 comment (-- B0 start (construct frame) --) | |
| 0x1aa58ba04237 comment (-- B2 start --) | |
| 0x1aa58ba04237 comment (-- B3 start --) | |
| 0x1aa58ba04237 comment (-- <elemAt.js:2:14> --) | |
| 0x1aa58ba04245 embedded object (0x85d3e503c79 <Map(FAST_SMI_ELEMENTS)>) | |
| 0x1aa58ba0426c comment (-- B8 start --) | |
| 0x1aa58ba04273 comment (-- B9 start (deconstruct frame) --) | |
| 0x1aa58ba04288 comment (Abort message: ) | |
| 0x1aa58ba04288 comment (32 bit value in register is not zero-extended) | |
| 0x1aa58ba04293 code target (BUILTIN) (0x1aa58b804120) | |
| 0x1aa58ba042a5 comment (-- <elemAt.js:3:1> --) | |
| 0x1aa58ba042ac comment (-- B10 start (no frame) --) | |
| 0x1aa58ba042ac comment (-- B1 start (deferred) --) | |
| 0x1aa58ba042ac comment (-- <elemAt.js:1:16> --) | |
| 0x1aa58ba042ae external reference (Runtime::StackGuard) (0x10790f600) | |
| 0x1aa58ba042bd code target (STUB) (0x1aa58b8041a0) | |
| 0x1aa58ba042c6 comment (-- B4 start (deferred) --) | |
| 0x1aa58ba042c6 comment (-- <elemAt.js:2:14> --) | |
| 0x1aa58ba04306 comment (-- B5 start (deferred) --) | |
| 0x1aa58ba04306 comment (-- B6 start (deferred) --) | |
| 0x1aa58ba04315 comment (-- B7 start (deferred) --) | |
| 0x1aa58ba04326 deopt script offset (43) | |
| 0x1aa58ba04326 deopt inlining id (-1) | |
| 0x1aa58ba04326 deopt reason (Smi) | |
| 0x1aa58ba04326 deopt index | |
| 0x1aa58ba04327 runtime entry (deoptimization bailout 0) | |
| 0x1aa58ba0432b deopt script offset (43) | |
| 0x1aa58ba0432b deopt inlining id (-1) | |
| 0x1aa58ba0432b deopt reason (wrong map) | |
| 0x1aa58ba0432b deopt index | |
| 0x1aa58ba0432c runtime entry (deoptimization bailout 1) | |
| 0x1aa58ba04330 deopt script offset (43) | |
| 0x1aa58ba04330 deopt inlining id (-1) | |
| 0x1aa58ba04330 deopt reason (out of bounds) | |
| 0x1aa58ba04330 deopt index | |
| 0x1aa58ba04331 runtime entry (deoptimization bailout 2) | |
| 0x1aa58ba04335 deopt script offset (43) | |
| 0x1aa58ba04335 deopt inlining id (-1) | |
| 0x1aa58ba04335 deopt reason (not a heap number) | |
| 0x1aa58ba04335 deopt index | |
| 0x1aa58ba04336 runtime entry (deoptimization bailout 4) | |
| 0x1aa58ba0433a deopt script offset (43) | |
| 0x1aa58ba0433a deopt inlining id (-1) | |
| 0x1aa58ba0433a deopt reason (lost precision or NaN) | |
| 0x1aa58ba0433a deopt index | |
| 0x1aa58ba0433b runtime entry (deoptimization bailout 5) | |
| 0x1aa58ba0433f deopt script offset (43) | |
| 0x1aa58ba0433f deopt inlining id (-1) | |
| 0x1aa58ba0433f deopt reason (minus zero) | |
| 0x1aa58ba0433f deopt index | |
| 0x1aa58ba04340 runtime entry (deoptimization bailout 6) | |
| 0x1aa58ba04354 comment (;;; Safepoint table.) | |
| --- End code --- |
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