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09a8440b45
PR-URL: https://github.com/nodejs/node/pull/51362 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
54 lines
1.9 KiB
JavaScript
54 lines
1.9 KiB
JavaScript
// Copyright 2023 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: --allow-natives-syntax --turbofan --stress-compaction
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// Flags: --no-always-turbofan --no-always-sparkplug --expose-gc
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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(function TestStressCompactionWasmStubCallRelocation() {
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print(arguments.callee.name);
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let builder = new WasmModuleBuilder();
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let struct = builder.addStruct([makeField(kWasmI32, true)]);
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builder.addFunction('getElementNull', makeSig([kWasmExternRef], [kWasmI32]))
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.addBody([
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kExprLocalGet, 0,
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kGCPrefix, kExprAnyConvertExtern,
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kGCPrefix, kExprRefCast, struct,
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kGCPrefix, kExprStructGet, struct, 0])
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.exportFunc();
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let instance = builder.instantiate({});
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let wasm = instance.exports;
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const trap = kTrapIllegalCast;
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// getElementNull calls the TrapIllegalCast built-in.
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const getNull = () => wasm.getElementNull(null);
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// Build feedback vector.
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%PrepareFunctionForOptimization(getNull);
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for (let i = 0; i < 10; ++i) {
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assertTraps(trap, getNull)
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}
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// Optimize function causing the wasm function with the built-in to be inlined
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// into the JavaScript TurboFan code. The built-in is encoded as a jump with
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// a 32 bit offset relative to the pc (on some platforms).
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%OptimizeFunctionOnNextCall(getNull);
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assertTraps(trap, getNull)
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assertOptimized(getNull);
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// Force gc(). It is necessary to call gc() multiple times and the flag
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// --stress-compaction has to be set as well to cause a relocation of the JS
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// function.
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gc();
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gc();
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gc();
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// The optimized function is not GCed.
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assertOptimized(getNull);
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// Calling getNull() again calls the relative built-in. If it still succeeds,
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// the jump to the built-in was relocated successfully.
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assertTraps(trap, getNull)
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assertOptimized(getNull);
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})();
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