Add regression test for fix from r14732.

R=verwaest@chromium.org
BUG=chromium:242502
TEST=mjsunit/regress/regress-crbug-242502

Review URL: https://codereview.chromium.org/15288008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14734 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
mstarzinger@chromium.org 2013-05-21 14:20:42 +00:00
parent 3947fefe40
commit db4a770c3f

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@ -0,0 +1,66 @@
// Copyright 2013 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
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// Flags: --expose-gc --allow-natives-syntax
function f() {
return 23;
}
function call(o) {
return o['']();
}
function test() {
var o1 = %ToFastProperties(Object.create({ foo:1 }, { '': { value:f }}));
var o2 = %ToFastProperties(Object.create({ bar:1 }, { '': { value:f }}));
var o3 = %ToFastProperties(Object.create({ baz:1 }, { '': { value:f }}));
var o4 = %ToFastProperties(Object.create({ qux:1 }, { '': { value:f }}));
var o5 = %ToFastProperties(Object.create({ loo:1 }, { '': { value:f }}));
// Called twice on o1 to turn monomorphic.
assertEquals(23, call(o1));
assertEquals(23, call(o1));
// Called on four other objects to turn megamorphic.
assertEquals(23, call(o2));
assertEquals(23, call(o3));
assertEquals(23, call(o4));
assertEquals(23, call(o5));
return o1;
}
// Fill stub cache with entries.
test();
// Clear stub cache during GC.
gc();
// Turn IC megamorphic again.
var oboom = test();
// Optimize with previously cleared stub cache.
%OptimizeFunctionOnNextCall(call);
assertEquals(23, call(oboom));