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// Copyright 2022 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: --expose-gc --experimental-wasm-gc
d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
let builder = new WasmModuleBuilder();
builder.setSingletonRecGroups();
let struct_index = builder.addStruct([makeField(kWasmI32, true)]);
let identical_struct_index = builder.addStruct([makeField(kWasmI32, true)]);
let distinct_struct_index = builder.addStruct([makeField(kWasmI64, true)]);
let struct_init = builder.addFunction("struct_init",
makeSig([], [kWasmStructRef]))
.addBody([kGCPrefix, kExprStructNewDefault, struct_index])
.exportFunc();
let test_pass = builder.addFunction("test_pass",
makeSig([kWasmStructRef], [kWasmI32]))
.addBody([kExprLocalGet, 0,
kGCPrefix, kExprRefTestDeprecated, identical_struct_index])
.exportFunc();
let test_fail = builder.addFunction("test_fail",
makeSig([kWasmStructRef], [kWasmI32]))
.addBody([kExprLocalGet, 0,
kGCPrefix, kExprRefTestDeprecated, distinct_struct_index])
.exportFunc();
(function TestCanonicalizationSameInstance() {
print(arguments.callee.name);
let instance = builder.instantiate({});
assertEquals(1, instance.exports.test_pass(instance.exports.struct_init()));
assertEquals(0, instance.exports.test_fail(instance.exports.struct_init()));
})();
(function TestCanonicalizationSameModuleDifferentInstances() {
print(arguments.callee.name);
let module = builder.toModule();
let instance1 = new WebAssembly.Instance(module, {});
let instance2 = new WebAssembly.Instance(module, {});
assertEquals(1, instance2.exports.test_pass(instance1.exports.struct_init()));
assertEquals(0, instance2.exports.test_fail(instance1.exports.struct_init()));
})();
// GC between tests so that the type registry is cleared.
gc();
(function TestCanonicalizationDifferentModules() {
print(arguments.callee.name);
let instance1 = builder.instantiate({});
let instance2 = builder.instantiate({});
assertEquals(1, instance2.exports.test_pass(instance1.exports.struct_init()));
assertEquals(0, instance2.exports.test_fail(instance1.exports.struct_init()));
})();
(function TestCanonicalizationDifferentModulesAfterGC() {
print(arguments.callee.name);
let struct = (function make_struct() {
return builder.instantiate({}).exports.struct_init();
})();
// A the live {struct} object keeps the instance alive.
gc();
let instance = builder.instantiate({});
assertEquals(1, instance.exports.test_pass(struct));
assertEquals(0, instance.exports.test_fail(struct));
})();
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