17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
44 lines
1.6 KiB
JavaScript
44 lines
1.6 KiB
JavaScript
// Copyright 2023 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --liftoff --no-wasm-tier-up
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d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
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(function () {
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const builder = new WasmModuleBuilder();
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builder.addImportedMemory("imports", "mem", 1);
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builder.addType(makeSig([kWasmI32, kWasmI64, kWasmI64], [kWasmI64]));
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// Generate function 1 (out of 1).
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builder.addFunction(undefined, 0 /* sig */).addBodyWithEnd([
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kExprLocalGet, 0,
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kExprLocalGet, 1,
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kExprLocalGet, 2,
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kAtomicPrefix, kExprI64AtomicCompareExchange, 0x03, 0x00,
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kExprEnd
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]);
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builder.addExport('run', 0);
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var mem = new WebAssembly.Memory({ initial: 1 });
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let i64arr = new BigUint64Array(mem.buffer);
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let dv = new DataView(mem.buffer);
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dv.setBigUint64(0, 0n, true)
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dv.setBigUint64(8, 0x8eeeffffffffn, true)
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const instance = builder.instantiate({ imports: { mem: mem } });
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// Equal, new value is stored and old value returned.
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assertEquals(0n, instance.exports.run(0, 0n, 1n));
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assertEquals(1n, dv.getBigUint64(0, true));
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// Not equal, old value stays.
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assertEquals(1n, instance.exports.run(0, 0n, 2n));
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assertEquals(1n, dv.getBigUint64(0, true));
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// Equal, new value is stored and old value returned.
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assertEquals(0x8eeeffffffffn, instance.exports.run(8, 0x8eeeffffffffn, 0x1000ffffffffn));
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assertEquals(0x1000ffffffffn, dv.getBigUint64(8, true));
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// Not equal, old value stays.
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assertEquals(0x1000ffffffffn, instance.exports.run(8, 0x8eeeffffffffn, 0x1n));
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assertEquals(0x1000ffffffffn, dv.getBigUint64(8, true));
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})();
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