v8/test/mjsunit/compiler/deopt-closure.js
Michael Starzinger 9d3c4b4b91 [turbofan] Implement lowering of {JSCreateClosure}.
This adds support for inline allocation of {JSFunction} objects as part
of closures instantiation for {JSCreateClosure} nodes. The lowering is
limited to instantiation sites which have already seen more than one
previous instantiation, this avoids the need to increment the respective
counter.

R=jarin@chromium.org

Change-Id: I462c557453fe58bc5f09020a3d5ebdf11c2ea68b
Reviewed-on: https://chromium-review.googlesource.com/594287
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48176}
2017-09-27 09:20:21 +00:00

48 lines
1.1 KiB
JavaScript

// Copyright 2017 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
(function TestMaterializeTargetOfInterpretedFrame() {
function f(x) {
function g() {
%_DeoptimizeNow();
return x + 1;
}
return g();
}
assertEquals(24, f(23));
assertEquals(43, f(42));
%OptimizeFunctionOnNextCall(f);
assertEquals(66, f(65));
})();
(function TestMaterializeTargetOfArgumentsAdaptorFrame() {
function f(x) {
function g(a, b, c) {
%_DeoptimizeNow();
return x + 1;
}
return g();
}
assertEquals(24, f(23));
assertEquals(43, f(42));
%OptimizeFunctionOnNextCall(f);
assertEquals(66, f(65));
})();
(function TestMaterializeTargetOfConstructStubFrame() {
function f(x) {
function g() {
%_DeoptimizeNow();
this.val = x + 1;
}
return new g();
}
assertEquals({ val: 24 }, f(23));
assertEquals({ val: 43 }, f(42));
%OptimizeFunctionOnNextCall(f);
assertEquals({ val: 66 }, f(65));
})();