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| 1 // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are |
| 4 // met: |
| 5 // |
| 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided |
| 11 // with the distribution. |
| 12 // * Neither the name of Google Inc. nor the names of its |
| 13 // contributors may be used to endorse or promote products derived |
| 14 // from this software without specific prior written permission. |
| 15 // |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 |
| 28 // Test for a broken fast-smi-loop that does not save the incremented value |
| 29 // of the loop index. If this test fails, it loops forever, and times out. |
| 30 |
| 31 // Flags: --nofull-compiler |
| 32 |
| 33 // Calling foo() spills the virtual frame. |
| 34 function foo() { |
| 35 return; |
| 36 } |
| 37 |
| 38 function bar() { |
| 39 var x1 = 3; |
| 40 var x2 = 3; |
| 41 var x3 = 3; |
| 42 var x4 = 3; |
| 43 var x5 = 3; |
| 44 var x6 = 3; |
| 45 var x7 = 3; |
| 46 var x8 = 3; |
| 47 var x9 = 3; |
| 48 var x10 = 3; |
| 49 var x11 = 3; |
| 50 var x12 = 3; |
| 51 var x13 = 3; |
| 52 |
| 53 foo(); |
| 54 |
| 55 x1 = 257; |
| 56 x2 = 258; |
| 57 x3 = 259; |
| 58 x4 = 260; |
| 59 x5 = 261; |
| 60 x6 = 262; |
| 61 x7 = 263; |
| 62 x8 = 264; |
| 63 x9 = 265; |
| 64 x10 = 266; |
| 65 x11 = 267; |
| 66 x12 = 268; |
| 67 x13 = 269; |
| 68 |
| 69 // The loop variable x7 is initialized to 3, |
| 70 // and then MakeMergeable is called on the virtual frame. |
| 71 // MakeMergeable has forced the loop variable x7 to be spilled, |
| 72 // so it is marked as synced |
| 73 // The back edge then merges its virtual frame, which incorrectly |
| 74 // claims that x7 is synced, and does not save the modified |
| 75 // value. |
| 76 for (x7 = 3; x7 < 10; ++x7) { |
| 77 foo(); |
| 78 } |
| 79 } |
| 80 |
| 81 bar(); |
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