v8/test/mjsunit/wasm/test-serialization-with-lazy-compilation.js
Andreas Haas 9380e55ec4 [wasm] Fix partial deserialization for lazy compilation
The function index encoded into the serialized module is already offset
by num_imported_functions. For lazy compilation, however, we added the
number of imported functions another time, which was incorrect.

R=clemensb@chromium.org

Change-Id: I56380e21e74b4d1935ebdbab6ef8cc388de49f2c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3172761
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76965}
2021-09-21 15:09:44 +00:00

45 lines
1.2 KiB
JavaScript

// Copyright 2021 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: --allow-natives-syntax --wasm-lazy-compilation --expose-gc
d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
const num_functions = 2;
function create_builder() {
const builder = new WasmModuleBuilder();
builder.addImport("foo", "bar", kSig_i_v);
for (let i = 0; i < num_functions; ++i) {
builder.addFunction('f' + i, kSig_i_v)
.addBody(wasmI32Const(i))
.exportFunc();
}
return builder;
}
const wire_bytes = create_builder().toBuffer();
function serializeModule() {
const module = new WebAssembly.Module(wire_bytes);
const buff = %SerializeWasmModule(module);
return buff;
};
const serialized_module = serializeModule();
// Do some GCs to make sure the first module got collected and removed from the
// module cache.
gc();
gc();
gc();
(function testSerializedModule() {
print(arguments.callee.name);
const module = %DeserializeWasmModule(serialized_module, wire_bytes);
const instance = new WebAssembly.Instance(module, {foo: {bar: () => 1}});
assertEquals(0, instance.exports.f0());
assertEquals(1, instance.exports.f1());
})();