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// Copyright 2020 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: --enable-testing-opcode-in-wasm
// Test that tiering up and tiering down works even if functions cannot be
// compiled with Liftoff.
load('test/mjsunit/wasm/wasm-module-builder.js');
// Create a simple Wasm module.
function create_builder(i) {
const kExprNopForTestingUnsupportedInLiftoff = 0x16;
const builder = new WasmModuleBuilder();
builder.addFunction('main', kSig_i_i)
.addBody([
kExprLocalGet, 0, kExprNopForTestingUnsupportedInLiftoff,
...wasmI32Const(i), kExprI32Add
])
.exportFunc();
return builder;
}
const instance = create_builder(0).instantiate();
// Test recompilation.
const Debug = new DebugWrapper();
Debug.enable();
assertFalse(%IsLiftoffFunction(instance.exports.main));
const newInstance = create_builder(1).instantiate();
assertFalse(%IsLiftoffFunction(newInstance.exports.main));
// Async.
async function testTierDownToLiftoffAsync() {
Debug.disable();
const asyncInstance = await create_builder(2).asyncInstantiate();
// Test recompilation.
Debug.enable();
assertFalse(%IsLiftoffFunction(asyncInstance.exports.main));
const newAsyncInstance = await create_builder(3).asyncInstantiate();
assertFalse(%IsLiftoffFunction(newAsyncInstance.exports.main));
}
assertPromiseResult(testTierDownToLiftoffAsync());
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