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deps/v8/test/mjsunit/turboshaft/maglev-frontend/store-jsarray.js

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+// Copyright 2024 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: --allow-natives-syntax --turbolev --turbofan
+
+function store_arr(obj_arr, double_arr) {
+  obj_arr[0] = 42; // FixedArray, no write barrier
+  obj_arr[1] = double_arr; // FixedArray, with write barrier
+  double_arr[1] = 42.25; // DoubleFixedArray
+}
+
+let obj_arr = [0, {}, 2];
+let double_arr = [1.56, 2.68, 3.51];
+
+%PrepareFunctionForOptimization(store_arr);
+store_arr(obj_arr, double_arr);
+assertEquals([42, double_arr, 2], obj_arr);
+assertEquals([1.56, 42.25, 3.51], double_arr);
+
+// Resetting {obj_arr} and {double_arr}
+obj_arr[0] = 0;
+obj_arr[1] = {};
+double_arr[1] = 2.68;
+
+%OptimizeFunctionOnNextCall(store_arr);
+store_arr(obj_arr, double_arr);
+assertEquals([42, double_arr, 2], obj_arr);
+assertEquals([1.56, 42.25, 3.51], double_arr);
+assertOptimized(store_arr);