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9d7cd9b864
PR-URL: https://github.com/nodejs/node/pull/54077 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
// Copyright 2024 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: --no-liftoff --no-wasm-lazy-compilation
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// Flags: --no-experimental-wasm-inlining --no-wasm-loop-unrolling
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// Flags: --no-wasm-loop-peeling
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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(function TestArrayGetTypeInference() {
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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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let array = builder.addArray(wasmRefType(struct), true);
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builder.addFunction("arrayGetSameType",
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makeSig([kWasmI32, wasmRefNullType(array)], [kWasmI32]))
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.addBody([
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kExprLocalGet, 0,
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kExprIf, kStructRefCode,
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kExprLocalGet, 1,
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kExprI32Const, 0,
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kGCPrefix, kExprArrayGet, array,
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kExprElse,
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kExprLocalGet, 1,
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kExprI32Const, 1,
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kGCPrefix, kExprArrayGet, array,
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kExprEnd,
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// This is always true.
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kGCPrefix, kExprRefTest, struct,
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])
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.exportFunc();
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builder.addFunction("arrayGetDifferentType",
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makeSig([kWasmI32, wasmRefNullType(array)], [kWasmI32]))
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.addBody([
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kExprLocalGet, 0,
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kExprIf, kStructRefCode,
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kExprRefNull, kStructRefCode,
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kExprElse,
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kExprLocalGet, 1,
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kExprI32Const, 1,
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kGCPrefix, kExprArrayGet, array,
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kExprEnd,
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// This cannot be optimized away.
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kGCPrefix, kExprRefTest, struct,
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])
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.exportFunc();
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let instance = builder.instantiate({});
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assertTraps(kTrapNullDereference,
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() => instance.exports.arrayGetSameType(1, null));
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assertEquals(0, instance.exports.arrayGetDifferentType(1, null));
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assertTraps(kTrapNullDereference,
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() => instance.exports.arrayGetSameType(0, null));
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})();
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