387dfe27eb
arrayref, dataref and i31ref get changed to (ref null t). Bug: v8:7748 Change-Id: Iae0e6969a1f71ccf1f193c267d761b7a1796f67b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3788093 Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/main@{#82048}
57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
// Copyright 2022 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: --experimental-wasm-gc
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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(function I31RefBasic() {
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print(arguments.callee.name);
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var builder = new WasmModuleBuilder();
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builder.addFunction("signed", kSig_i_i)
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.addLocals(wasmRefType(kWasmI31Ref), 1)
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.addBody([kExprLocalGet, 0, kGCPrefix, kExprI31New, kExprLocalTee, 1,
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kGCPrefix, kExprI31GetS])
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.exportFunc();
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builder.addFunction("unsigned", kSig_i_i)
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.addLocals(wasmRefType(kWasmI31Ref), 1)
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.addBody([kExprLocalGet, 0, kGCPrefix, kExprI31New, kExprLocalTee, 1,
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kGCPrefix, kExprI31GetU])
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.exportFunc();
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let instance = builder.instantiate();
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assertEquals(123, instance.exports.signed(123));
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assertEquals(123, instance.exports.unsigned(123));
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// Truncation:
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assertEquals(0x1234, instance.exports.signed(0x80001234));
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assertEquals(0x1234, instance.exports.unsigned(0x80001234));
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// Sign/zero extention:
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assertEquals(-1, instance.exports.signed(0x7fffffff));
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assertEquals(0x7fffffff, instance.exports.unsigned(0x7fffffff));
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})();
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(function I31RefNullable() {
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print(arguments.callee.name);
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var builder = new WasmModuleBuilder();
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builder.addFunction("i31_null", kSig_i_i)
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.addLocals(wasmRefNullType(kWasmI31Ref), 1)
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.addBody([
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kExprLocalGet, 0,
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kExprIf, kWasmVoid,
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kExprRefNull, kI31RefCode, kExprLocalSet, 1,
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kExprElse,
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...wasmI32Const(42), kGCPrefix, kExprI31New, kExprLocalSet, 1,
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kExprEnd,
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kExprLocalGet, 1, kGCPrefix, kExprI31GetS])
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.exportFunc();
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let instance = builder.instantiate();
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assertEquals(42, instance.exports.i31_null(0));
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assertTraps(kTrapNullDereference, () => instance.exports.i31_null(1));
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})();
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