forked from LeenkxTeam/Kmake
40 lines
1018 B
JavaScript
40 lines
1018 B
JavaScript
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// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --turbolev --turbofan
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function f(a, b) {
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// We do 2 transitioning stores that transition to a double field. The 2
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// HeapNumbers that will get created should not be GVNed.
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a.z = 42.54;
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b.z = 42.54;
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}
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let o1 = { x : 15 };
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let o2 = { x : 15 };
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let o3 = { x : 15 };
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let o4 = { x : 15 };
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// Adding a property to each object to ensure that the properties array has an
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// empty slot (otherwise, the transitioning stores of `f` would need to realloc,
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// and this isn't currently optimized in Maglev).
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o1.y = 12;
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o2.y = 12;
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o3.y = 12;
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o4.y = 12;
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%PrepareFunctionForOptimization(f);
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f(o1, o2);
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%OptimizeFunctionOnNextCall(f);
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f(o3, o4);
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// Changing o3.z should not change o4.z.
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o3.z += 1;
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assertNotEquals(o3, o4);
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assertEquals(o3, { x : 15, y : 12, z : 43.54});
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assertEquals(o4, { x : 15, y : 12, z : 42.54});
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