33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
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// Copyright 2024 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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d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
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const builder = new WasmModuleBuilder();
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let $struct0 = builder.addStruct([makeField(kWasmI32, true)]);
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let $array0 = builder.addArray(wasmRefType($struct0), true);
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builder.addFunction("main", kSig_i_v).exportFunc()
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.addLocals(wasmRefType($struct0), 1)
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.addBody([
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// Allocate a struct with default field value 0.
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kGCPrefix, kExprStructNewDefault, $struct0,
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kExprLocalTee, 0,
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// Store it in an array (as default value) and reload it from there.
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// Make the array large enough that we initialize it via builtin call.
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...wasmI32Const(50), // array length
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kGCPrefix, kExprArrayNew, $array0, // array
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kExprI32Const, 0, // array index
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kGCPrefix, kExprArrayGet, $array0, // struct
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// Overwrite the struct field's value.
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kExprI32Const, 42,
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kGCPrefix, kExprStructSet, $struct0, 0,
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// Reload the struct field's value.
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kExprLocalGet, 0,
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kGCPrefix, kExprStructGet, $struct0, 0,
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]);
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let instance = builder.instantiate();
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assertEquals(42, instance.exports.main());
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