2ba409389c
A TrapUnless after an IfTrue, and conversely, a TrapIf after an IfFalse, should not optimize away the respective Branch node. Bug: v8:12624 Change-Id: I250b2f84c38295ca35e440589901ed5a58bb4e75 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3500303 Reviewed-by: Nico Hartmann <nicohartmann@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/main@{#79349}
52 lines
1.3 KiB
JavaScript
52 lines
1.3 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 --no-liftoff
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// Under certain conditions, the following subgraph was not optimized correctly:
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// cond
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// | \
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// | Branch
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// | / \
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// | IfTrue IfFalse
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// | |
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// TrapUnless
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d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
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var builder = new WasmModuleBuilder();
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builder.addGlobal(kWasmI32, true, WasmInitExpr.I32Const(1));
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builder.addFunction("main", kSig_i_i)
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.addBody([
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kExprLocalGet, 0,
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kExprIf, kWasmI32,
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kExprUnreachable,
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kExprElse,
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kExprLoop, kWasmVoid,
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kExprBlock, kWasmVoid,
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kExprLocalGet, 0,
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kExprIf, kWasmVoid,
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kExprLocalGet, 0,
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kExprBrIf, 1,
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kExprI32Const, 7,
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kExprLocalSet, 0,
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kExprEnd,
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kExprGlobalGet, 0,
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kExprIf, kWasmVoid,
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kExprI32Const, 0, kExprReturn,
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kExprEnd,
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kExprBr, 1,
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kExprEnd,
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kExprEnd,
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kExprI32Const, 0,
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kExprEnd,
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kExprLocalGet, 0,
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kExprI32DivU])
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.exportFunc();
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let instance = builder.instantiate();
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assertEquals(0, instance.exports.main(0));
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