TypedArray OOB write access

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TypedArray OOB write access

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jsBenchIt.json

{"title":"TypedArray OOB write access","initialization":"// runs once\n\nconst size = 10000;\n\nconst ta1 = new Float32Array(size);\nconst ta2 = new Float32Array(size);\nconst ta3 = new Float32Array(size);\n\nfunction respectsBounds(arr) {\n  const r = Math.random;\n  for (let i = 0; i < arr.length; i++) {\n    arr[i] = r();\n  }\n  return arr;\n};\n\nfunction respectsBounds2(arr) {\n  const r = Math.random;\n  for (let i = 0; i < size; i++) {\n    arr[i] = r();\n  }\n  return arr;\n};\n\nfunction outOfBounds(arr) {\n  const r = Math.random;\n  const s2 = size + 1000;\n  for (let i = 1000; i < s2; i++) {\n    arr[i] = r();\n  }\n  return arr;\n};","setup":"// runs before each test\nconst r = Math.random;\nfor (let i = 0; i < ta1.length; i++) {\n  ta1[i] = ta2[i] = ta3[i] = r();\n}","tests":[{"name":"respectsBounds","code":"const v = respectsBounds(ta1);","results":{"aborted":false,"count":976,"cycles":2,"hz":9087.523277467413,"stats":{"moe":5.7089443112675e-7,"rme":0.5188016431840857,"sem":2.912726689422194e-7,"deviation":0.0000020596087938334764,"mean":0.00011004098360655737,"variance":4.241988383636188e-12,"numSamples":50},"times":{"cycle":0.1074,"elapsed":5.853,"period":0.00011004098360655737,"timeStamp":1714490537255}},"platforms":{"Mozilla/5.0 (X11; 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Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0":{"aborted":false,"count":3007,"cycles":4,"hz":38707.102177815905,"stats":{"moe":3.0705029817867324e-7,"rme":1.1885027265330745,"sem":1.5665831539728228e-7,"deviation":0.0000012532665231782582,"mean":0.00002583505206373024,"variance":1.5706769781193197e-12,"numSamples":64},"times":{"cycle":0.07768600155563683,"elapsed":6.119,"period":0.00002583505206373024,"timeStamp":1714490323715}},"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36":{"aborted":false,"count":976,"cycles":2,"hz":8635.576036866361,"stats":{"moe":0.0000014143200770088905,"rme":1.2213468565476961,"sem":7.215918760249441e-7,"deviation":0.000004999335166416582,"mean":0.00011580003415300544,"variance":2.499335210616952e-11,"numSamples":48},"times":{"cycle":0.1130208333333333,"elapsed":5.865,"period":0.00011580003415300544,"timeStamp":1714490548843}}}}]}