Upload Kmake

deps/v8/test/mjsunit/store-load-elision-aliasing.js

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+// Copyright 2023 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 --maglev
+
+function foo(a, b) {
+  // Write to a.x, which will also cache the value in a.x
+  a.x = 7;
+  // This write should be cached here.
+  const x = a.x;
+  // a might alias b, so we should clear the cached value here...
+  b.x = 4;
+  // ... and return the old and uncached new value here (which is 4 if a aliases
+  // b, 7 otherwise).
+  const y = a.x;
+  return [x, y];
+}
+
+const a = {x: 1};
+const b = {x: 2};
+
+%PrepareFunctionForOptimization(foo);
+assertEquals([7,4], foo(a, a));
+assertEquals([7,7], foo(a, b));
+%OptimizeMaglevOnNextCall(foo);
+assertEquals([7,4], foo(a, a));
+assertEquals([7,7], foo(a, b));