Upload Kmake

deps/v8/test/mjsunit/regress/wasm/regress-12945.js

@@ -0,0 +1,45 @@
+// 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 --allow-natives-syntax
+
+d8.file.execute("test/mjsunit/wasm/wasm-module-builder.js");
+
+let builder = new WasmModuleBuilder();
+let i32_field = makeField(kWasmI32, true);
+builder.startRecGroup();
+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);
+builder.endRecGroup();
+let sig = makeSig([wasmRefNullType(supertype)], [kWasmI32]);
+
+let callee = builder.addFunction("callee", sig).addBody([
+  kExprLocalGet, 0,
+  kGCPrefix, kExprRefTest, 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();