3eded2c06c
The current usage of this runtime function is broken as it does not prevent inlining of the affected function but rather bails out from the whole unit of compilation after trying to inline affected functions. This simplifies said runtime function to avoid accidental misuse. R=titzer@chromium.org TEST=mjsunit/never-optimize Review URL: https://codereview.chromium.org/19776006 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15762 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
127 lines
3.1 KiB
JavaScript
127 lines
3.1 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax --always-compact --expose-gc
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var O = { get f() { return 0; } };
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var CODE = [];
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var R = [];
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function Allocate4Kb(N) {
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var arr = [];
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do {arr.push(new Array(1024));} while (--N > 0);
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return arr;
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}
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function AllocateXMb(X) {
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return Allocate4Kb((1024 * X) / 4);
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}
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function Node(v, next) { this.v = v; this.next = next; }
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Node.prototype.execute = function (O) {
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var n = this;
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while (n.next !== null) n = n.next;
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n.v(O);
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};
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function LongList(N, x) {
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if (N == 0) return new Node(x, null);
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return new Node(new Array(1024), LongList(N - 1, x));
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}
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var L = LongList(1024, function (O) {
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for (var i = 0; i < 5; i++) O.f;
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});
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%NeverOptimizeFunction(Incremental);
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function Incremental(O, x) {
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if (!x) {
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return;
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}
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function CreateCode(i) {
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var f = new Function("return O.f_" + i);
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CODE.push(f);
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f(); // compile
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f(); // compile
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f(); // compile
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}
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for (var i = 0; i < 1e4; i++) CreateCode(i);
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gc();
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gc();
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gc();
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print(">>> 1 <<<");
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L.execute(O);
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L = null;
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print(">>> 2 <<<");
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AllocateXMb(8);
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//rint("1");
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//llocateXMb(8);
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//rint("1");
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//llocateXMb(8);
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}
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function foo(O, x) {
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Incremental(O, x);
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print('f');
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for (var i = 0; i < 5; i++) O.f;
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print('g');
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bar(x);
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}
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function bar(x) {
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if (!x) return;
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%DeoptimizeFunction(foo);
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AllocateXMb(8);
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AllocateXMb(8);
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}
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var O1 = {};
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var O2 = {};
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var O3 = {};
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var O4 = {f:0};
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foo(O1, false);
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foo(O2, false);
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foo(O3, false);
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%OptimizeFunctionOnNextCall(foo);
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foo(O4, true);
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