resizable-dataview-get-elem-with-sab.js

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// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize||!this.SharedArrayBuffer

load(libdir + "dataview.js");

const TypedArrays = [

  Int8Array,

  Uint8Array,

  Int16Array,

  Uint16Array,

  Int32Array,

  Uint32Array,

  Float16Array,

  Float32Array,

  Float64Array,

  BigInt64Array,

  BigUint64Array,

];

function test(TA) {

  const length = 4;

  const byteLength = length * TA.BYTES_PER_ELEMENT;

  let rab = new SharedArrayBuffer(byteLength, {maxByteLength: byteLength});

  let actual = new TA(rab);

  let expected = new TA(length);

  let type = expected[0].constructor;

  for (let i = 0; i < length; ++i) {

    actual[i] = type(i * i);

    expected[i] = type(i * i);

  let dv = new DataView(rab);

  for (let i = 0; i < 200; ++i) {

    let index = i % length;

    let byteIndex = index * TA.BYTES_PER_ELEMENT;

    assertEq(dv.getElem(byteIndex, nativeIsLittleEndian), expected[index]);

for (let TA of TypedArrays) {

  let getter = "get" + typeName(TA);

  // Copy test function to ensure monomorphic ICs.

  let copy = Function(`return ${test}`.replaceAll("getElem", getter))();

  copy(TA);