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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Flags: --allow-natives-syntax --smi-only-arrays --notrack-allocation-sites | 28 // Flags: --allow-natives-syntax --smi-only-arrays |
29 | 29 // Flags: --nostress-opt |
30 // No tracking of allocation sites because it interfers with the semantics | |
31 // the test is trying to ensure. | |
32 | 30 |
33 // Ensure that ElementsKind transitions in various situations are hoisted (or | 31 // Ensure that ElementsKind transitions in various situations are hoisted (or |
34 // not hoisted) correctly, don't change the semantics programs and don't trigger | 32 // not hoisted) correctly, don't change the semantics programs and don't trigger |
35 // deopt through hoisting in important situations. | 33 // deopt through hoisting in important situations. |
36 | 34 |
37 support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6)); | 35 support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6)); |
38 | 36 |
39 if (support_smi_only_arrays) { | 37 if (support_smi_only_arrays) { |
40 print("Tests include smi-only arrays."); | 38 print("Tests include smi-only arrays."); |
41 } else { | 39 } else { |
42 print("Tests do NOT include smi-only arrays."); | 40 print("Tests do NOT include smi-only arrays."); |
43 } | 41 } |
44 | 42 |
45 if (support_smi_only_arrays) { | 43 function test_wrapper() { |
46 // Make sure that a simple elements array transitions inside a loop before | 44 // Make sure that a simple elements array transitions inside a loop before |
47 // stores to an array gets hoisted in a way that doesn't generate a deopt in | 45 // stores to an array gets hoisted in a way that doesn't generate a deopt in |
48 // simple cases.} | 46 // simple cases.} |
49 function testDoubleConversion4(a) { | 47 function testDoubleConversion4(a) { |
50 var object = new Object(); | 48 var object = new Object(); |
51 a[0] = 0; | 49 a[0] = 0; |
52 var count = 3; | 50 var count = 3; |
53 do { | 51 do { |
54 a[0] = object; | 52 a[0] = object; |
55 } while (--count > 0); | 53 } while (--count > 0); |
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232 testStraightLineDupeElinination(new Array(5),0,.5,0,0,0); | 230 testStraightLineDupeElinination(new Array(5),0,.5,0,0,0); |
233 testStraightLineDupeElinination(new Array(5),0,0,.5,0,0); | 231 testStraightLineDupeElinination(new Array(5),0,0,.5,0,0); |
234 testStraightLineDupeElinination(new Array(5),0,0,0,.5,0); | 232 testStraightLineDupeElinination(new Array(5),0,0,0,.5,0); |
235 testStraightLineDupeElinination(new Array(5),0,0,0,0,.5); | 233 testStraightLineDupeElinination(new Array(5),0,0,0,0,.5); |
236 %OptimizeFunctionOnNextCall(testStraightLineDupeElinination); | 234 %OptimizeFunctionOnNextCall(testStraightLineDupeElinination); |
237 testStraightLineDupeElinination(new Array(5),0,0,0,0,0); | 235 testStraightLineDupeElinination(new Array(5),0,0,0,0,0); |
238 testStraightLineDupeElinination(new Array(5),0,0,0,0,0); | 236 testStraightLineDupeElinination(new Array(5),0,0,0,0,0); |
239 assertOptimized(testStraightLineDupeElinination); | 237 assertOptimized(testStraightLineDupeElinination); |
240 %ClearFunctionTypeFeedback(testStraightLineDupeElinination); | 238 %ClearFunctionTypeFeedback(testStraightLineDupeElinination); |
241 } | 239 } |
| 240 |
| 241 if (support_smi_only_arrays) { |
| 242 // The test is called in a test wrapper that has type feedback cleared to |
| 243 // prevent the influence of allocation-sites, which learn from transitions. |
| 244 test_wrapper(); |
| 245 %ClearFunctionTypeFeedback(test_wrapper); |
| 246 } |
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