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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --no-liftoff --experimental-wasm-gc --allow-natives-syntax
d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
let builder = new WasmModuleBuilder();
let i32_field = makeField(kWasmI32, true);
let supertype = builder.addStruct([i32_field]);
let sub1 = builder.addStruct([i32_field, i32_field], supertype);
let sub2 = builder.addStruct([i32_field, makeField(kWasmF64, true)], supertype);
let sig = makeSig([wasmRefNullType(supertype)], [kWasmI32]);
let callee = builder.addFunction("callee", sig).addBody([
kExprLocalGet, 0,
kGCPrefix, kExprRefTestDeprecated, sub1,
kExprIf, kWasmVoid,
kExprLocalGet, 0,
kGCPrefix, kExprRefCast, sub1,
kGCPrefix, kExprStructGet, sub1, 0,
kExprReturn,
kExprElse,
kExprLocalGet, 0,
kGCPrefix, kExprRefCast, sub2,
// This {ref.as_non_null} initially believes that it operates on a
// (ref null sub2), and when getting inlined into {crash} realizes
// that its actual type is {bottom} because this branch is unreachable.
kExprRefAsNonNull,
kGCPrefix, kExprStructGet, sub2, 0,
kExprReturn,
kExprEnd,
kExprI32Const, 42,
]);
builder.addFunction("crash", kSig_i_v).addBody([
kGCPrefix, kExprStructNewDefault, sub1,
kExprCallFunction, callee.index,
]).exportFunc();
let instance = builder.instantiate();
instance.exports.crash();
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