661f0220c7
This reverts commit 20327d1599.
Reason for revert: The code for structref/dataref is in use in
combination with array types, so the change breaks their use cases.
Reverting to restore the previous semantics of dataref.
Original change's description:
> [wasm-gc] Ref types: Convert dataref to structref
>
> This change changes the type hierarchy in a non-backwards compatible
> way: dataref is replaced with structref meaning that arrayref is
> no longer a subtype of it.
>
> Bug: v8:7748
> Change-Id: I965267d9ed11ea7c7d7df133cc39ee63e6b5abc3
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3929041
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83515}
Bug: v8:7748
Change-Id: I2a0bcafafe6f67df87aac86813f74573b708cce4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3936156
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#83544}
27 lines
847 B
JavaScript
27 lines
847 B
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 --experimental-wasm-ref-cast-nop
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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(function TestRefCastNop() {
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var builder = new WasmModuleBuilder();
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let struct = builder.addStruct([makeField(kWasmI32, true)]);
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builder.addFunction("main", kSig_i_i)
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.addLocals(wasmRefNullType(kWasmDataRef), 1)
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.addBody([
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kExprLocalGet, 0,
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kGCPrefix, kExprStructNew, struct,
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kExprLocalSet, 1,
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kExprLocalGet, 1,
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kGCPrefix, kExprRefCastNop, struct,
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kGCPrefix, kExprStructGet, struct, 0,
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]).exportFunc();
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var instance = builder.instantiate();
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assertEquals(42, instance.exports.main(42));
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})();
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