8aa6006533
This reverts commit3b883e787d. Reason for revert: gc-optimizations test is broken due to in-flight collision with another CL: https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket/8800403395649311857/+/u/Check/gc-optimizations Original change's description: > Reland "[wasm-gc] Ref types: Convert dataref to structref" > > This is a reland of commit20327d1599> > Changed in reland: > - Added new flag wasm-gc-structref-as-dataref which defaults to true > and preserves the existing behavior. > - Passing --no-wasm-gc-structref-as-dataref enables the new behavior. > - The flag affects static subtyping information between structref and > arrays and the corresponding cast, test and br_on instructions. > - Even with the old behavior the name still changed to "structref". > > Bug: v8:7748 > Change-Id: I2d8dd49dbc56246c087ac93452a87f860ead2195 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3945109 > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> > Commit-Queue: Matthias Liedtke <mliedtke@chromium.org> > Cr-Commit-Position: refs/heads/main@{#83697} Bug: v8:7748 Change-Id: Icb273a6d433c47a372563d0daf68725c6c5b15e3 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952514 Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Auto-Submit: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Cr-Commit-Position: refs/heads/main@{#83698}
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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