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Kmake/deps/v8/test/mjsunit/wasm/ref-cast-js-function.js
2026-05-26 23:36:42 -07:00

33 lines
1.1 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: --experimental-wasm-type-reflection
d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
(function RefCastWasmJSFunction() {
const paramsTypes = [kWasmI32];
const retTypes = [];
const sig = makeSig(paramsTypes, retTypes);
const builder = new WasmModuleBuilder();
const sigId = builder.addType(sig);
const impIndex = builder.addImport('m', 'foo', sigId);
const table = builder.addTable(kWasmAnyFunc, 10).index;
builder.addActiveElementSegment(table, wasmI32Const(0), [impIndex]);
builder.addFunction('main', sigId)
.addBody([
kExprLocalGet, 0, kExprI32Const, 0, kExprTableGet, table, kGCPrefix,
kExprRefCast, sigId, kExprCallRef, sigId
])
.exportFunc();
const jsFunc = new WebAssembly.Function(
{ parameters: ['i32'], results: [] },
() => 12 );
const instance = builder.instantiate({ 'm': { 'foo': jsFunc } });
instance.exports.main(15);
})();