ad52bf8a4e
Bug: v8:7748 Change-Id: Ie94e8f7f5afdaea7b4406bf8c57b294bf8f5733c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3865959 Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Matthias Liedtke <mliedtke@chromium.org> Cr-Commit-Position: refs/heads/main@{#82851}
106 lines
3.4 KiB
JavaScript
106 lines
3.4 KiB
JavaScript
// Copyright 2021 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: --experimental-wasm-gc
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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(function TestNominalTypesBasic() {
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print(arguments.callee.name);
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var builder = new WasmModuleBuilder();
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let struct1 = builder.addStruct([makeField(kWasmI32, true)]);
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let struct2 = builder.addStruct(
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[makeField(kWasmI32, true), makeField(kWasmI32, true)], struct1);
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let array1 = builder.addArray(kWasmI32, true);
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let array2 = builder.addArray(kWasmI32, true, array1);
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builder.addFunction("main", kSig_v_v)
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.addLocals(wasmRefNullType(struct1), 1)
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.addLocals(wasmRefNullType(array1), 1)
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.addBody([
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// Check that we can create a struct with implicit RTT.
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kGCPrefix, kExprStructNewDefault, struct2,
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// ...and upcast it.
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kExprLocalSet, 0,
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// Check that we can create an array with implicit RTT.
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kExprI32Const, 10, // length
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kGCPrefix, kExprArrayNewDefault, array2,
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// ...and upcast it.
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kExprLocalSet, 1])
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.exportFunc();
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// This test is only interested in type checking.
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builder.instantiate();
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})();
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(function TestSubtypingDepthTooLarge() {
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print(arguments.callee.name);
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let builder = new WasmModuleBuilder();
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builder.addStruct([]);
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for (let i = 0; i < 32; i++) builder.addStruct([], i);
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assertThrows(
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() => builder.instantiate(), WebAssembly.CompileError,
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/subtyping depth is greater than allowed/);
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})();
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(function TestArrayNewData() {
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print(arguments.callee.name);
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let builder = new WasmModuleBuilder();
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builder.setEarlyDataCountSection();
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let array_type_index = builder.addArray(kWasmI16, true);
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let dummy_byte = 0xff;
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let element_0 = 1000;
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let element_1 = -2222;
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let data_segment = builder.addPassiveDataSegment(
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[dummy_byte, element_0 & 0xff, (element_0 >> 8) & 0xff,
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element_1 & 0xff, (element_1 >> 8) & 0xff]);
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let global = builder.addGlobal(
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wasmRefType(array_type_index), true,
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[...wasmI32Const(1), ...wasmI32Const(2),
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kGCPrefix, kExprArrayNewData, array_type_index, data_segment],
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builder);
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builder.addFunction("global_get", kSig_i_i)
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.addBody([
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kExprGlobalGet, global.index,
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kExprLocalGet, 0,
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kGCPrefix, kExprArrayGetS, array_type_index])
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.exportFunc();
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// parameters: (segment offset, array length, array index)
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builder.addFunction("init_from_data", kSig_i_iii)
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.addBody([
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kExprLocalGet, 0, kExprLocalGet, 1,
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kGCPrefix, kExprArrayNewData,
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array_type_index, data_segment,
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kExprLocalGet, 2,
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kGCPrefix, kExprArrayGetS, array_type_index])
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.exportFunc();
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builder.addFunction("drop_segment", kSig_v_v)
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.addBody([kNumericPrefix, kExprDataDrop, data_segment])
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.exportFunc();
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let instance = builder.instantiate();
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assertEquals(element_0, instance.exports.global_get(0));
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assertEquals(element_1, instance.exports.global_get(1));
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let init = instance.exports.init_from_data;
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assertEquals(element_0, init(1, 2, 0));
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assertEquals(element_1, init(1, 2, 1));
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assertTraps(kTrapArrayTooLarge, () => init(1, 1000000000, 0));
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assertTraps(kTrapDataSegmentOutOfBounds, () => init(2, 2, 0));
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instance.exports.drop_segment();
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assertTraps(kTrapDataSegmentOutOfBounds, () => init(1, 2, 0));
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})();
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