Upload Kmake

deps/v8/test/mjsunit/compiler/regress-store-store-elim.js

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+// Copyright 2021 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 --verify-heap --turbo-store-elimination
+
+// Check that transitioning stores are not eliminated.
+
+let obj = { a: 42 }
+
+function foo() {
+  // Force GC on the next allocation to trigger heap verification.
+  %SimulateNewspaceFull();
+
+  // Transitioning store. Must not be eliminated.
+  this.f = obj;
+
+  this.f = {
+    a: 43
+  };
+}
+
+%PrepareFunctionForOptimization(foo);
+var a;
+a = new foo();
+a = new foo();
+%OptimizeFunctionOnNextCall(foo);
+a = new foo();
+assertEquals(43, a.f.a);