93 lines
2.7 KiB
JavaScript
93 lines
2.7 KiB
JavaScript
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// Copyright 2010 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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// Test for a broken fast-smi-loop that does not save the incremented value
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// of the loop index. If this test fails, it loops forever, and times out.
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// Calling foo() spills the virtual frame.
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function foo() {
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return;
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}
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function bar() {
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var x1 = 3;
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var x2 = 3;
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var x3 = 3;
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var x4 = 3;
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var x5 = 3;
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var x6 = 3;
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var x7 = 3;
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var x8 = 3;
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var x9 = 3;
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var x10 = 3;
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var x11 = 3;
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var x12 = 3;
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var x13 = 3;
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foo();
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x1 = 257;
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x2 = 258;
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x3 = 259;
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x4 = 260;
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x5 = 261;
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x6 = 262;
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x7 = 263;
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x8 = 264;
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x9 = 265;
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x10 = 266;
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x11 = 267;
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x12 = 268;
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x13 = 269;
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// The loop variable x7 is initialized to 3,
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// and then MakeMergeable is called on the virtual frame.
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// MakeMergeable has forced the loop variable x7 to be spilled,
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// so it is marked as synced
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// The back edge then merges its virtual frame, which incorrectly
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// claims that x7 is synced, and does not save the modified
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// value.
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for (x7 = 3; x7 < 10; ++x7) {
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foo();
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}
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}
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bar();
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function aliasing() {
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var x = 3;
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var j;
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for (j = 7; j < 11; ++j) {
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x = j;
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}
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assertEquals(10, x);
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assertEquals(11, j);
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}
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aliasing();
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