44 lines
1.6 KiB
JavaScript
44 lines
1.6 KiB
JavaScript
|
// Copyright 2023 the V8 project authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
// Flags: --liftoff --no-wasm-tier-up
|
||
|
|
|
||
|
|
d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
|
||
|
|
|
||
|
|
(function () {
|
||
|
|
const builder = new WasmModuleBuilder();
|
||
|
|
builder.addImportedMemory("imports", "mem", 1);
|
||
|
|
builder.addType(makeSig([kWasmI32, kWasmI64, kWasmI64], [kWasmI64]));
|
||
|
|
// Generate function 1 (out of 1).
|
||
|
|
builder.addFunction(undefined, 0 /* sig */).addBodyWithEnd([
|
||
|
|
kExprLocalGet, 0,
|
||
|
|
kExprLocalGet, 1,
|
||
|
|
kExprLocalGet, 2,
|
||
|
|
kAtomicPrefix, kExprI64AtomicCompareExchange, 0x03, 0x00,
|
||
|
|
kExprEnd
|
||
|
|
]);
|
||
|
|
builder.addExport('run', 0);
|
||
|
|
var mem = new WebAssembly.Memory({ initial: 1 });
|
||
|
|
|
||
|
|
let i64arr = new BigUint64Array(mem.buffer);
|
||
|
|
let dv = new DataView(mem.buffer);
|
||
|
|
dv.setBigUint64(0, 0n, true)
|
||
|
|
dv.setBigUint64(8, 0x8eeeffffffffn, true)
|
||
|
|
|
||
|
|
const instance = builder.instantiate({ imports: { mem: mem } });
|
||
|
|
// Equal, new value is stored and old value returned.
|
||
|
|
assertEquals(0n, instance.exports.run(0, 0n, 1n));
|
||
|
|
assertEquals(1n, dv.getBigUint64(0, true));
|
||
|
|
// Not equal, old value stays.
|
||
|
|
assertEquals(1n, instance.exports.run(0, 0n, 2n));
|
||
|
|
assertEquals(1n, dv.getBigUint64(0, true));
|
||
|
|
|
||
|
|
// Equal, new value is stored and old value returned.
|
||
|
|
assertEquals(0x8eeeffffffffn, instance.exports.run(8, 0x8eeeffffffffn, 0x1000ffffffffn));
|
||
|
|
assertEquals(0x1000ffffffffn, dv.getBigUint64(8, true));
|
||
|
|
// Not equal, old value stays.
|
||
|
|
assertEquals(0x1000ffffffffn, instance.exports.run(8, 0x8eeeffffffffn, 0x1n));
|
||
|
|
assertEquals(0x1000ffffffffn, dv.getBigUint64(8, true));
|
||
|
|
})();
|