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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 // Flags: --allow-natives-syntax --notrack-allocation-sites |
27 | 28 |
28 // Flags: --allow-natives-syntax | 29 // Test adding undefined from hole in double-holey to string. |
| 30 var a = [1.5, , 1.8]; |
29 | 31 |
30 function f(i, b) { | 32 function f(a, i, l) { |
31 var a = 0; | 33 var v = a[i]; |
32 if (b) { | 34 return l + v; |
33 var c = 1 << i; | |
34 a = c + c; | |
35 } | |
36 var x = a >> 3; | |
37 return a; | |
38 } | 35 } |
39 | 36 |
40 f(1, false); | 37 assertEquals("test1.5", f(a, 0, "test")); |
41 f(1, true); | 38 assertEquals("test1.5", f(a, 0, "test")); |
42 %OptimizeFunctionOnNextCall(f); | 39 %OptimizeFunctionOnNextCall(f); |
43 assertEquals((1 << 30) * 2, f(30, true)); | 40 assertEquals("testundefined", f(a, 1, "test")); |
44 | 41 |
45 | 42 // Test double-hole going through a phi to a string-add. |
46 var global = 1; | 43 function f2(b, a1, a2) { |
47 | 44 var v; |
48 function f2(b) { | |
49 var a = 0; | |
50 if (b) { | 45 if (b) { |
51 a = global; | 46 v = a1[0]; |
| 47 } else { |
| 48 v = a2[0]; |
52 } | 49 } |
53 var x = a >> 3; | 50 x = v * 2; |
54 return a; | 51 return "test" + v + x; |
55 } | 52 } |
56 | 53 |
57 f2(false); | 54 f2(true, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); |
58 f2(true); | 55 f2(true, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); |
| 56 f2(false, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); |
| 57 f2(false, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); |
59 %OptimizeFunctionOnNextCall(f2); | 58 %OptimizeFunctionOnNextCall(f2); |
60 global = 2.5; | 59 assertEquals("testundefinedNaN", f2(false, [,1.8,,1.9], [,1.9,,1.9])); |
61 assertEquals(global, f2(true)); | 60 |
| 61 // Test converting smi-hole to double-hole. |
| 62 function t_smi(a) { |
| 63 a[0] = 1.5; |
| 64 } |
| 65 |
| 66 t_smi([1,,3]); |
| 67 t_smi([1,,3]); |
| 68 t_smi([1,,3]); |
| 69 %OptimizeFunctionOnNextCall(t_smi); |
| 70 var ta = [1,,3]; |
| 71 t_smi(ta); |
| 72 ta.__proto__ = [6,6,6]; |
| 73 assertEquals([1.5,6,3], ta); |
| 74 |
| 75 // Test converting double-hole to tagged-hole. |
| 76 function t(b) { |
| 77 b[1] = {}; |
| 78 } |
| 79 |
| 80 t([1.4, 1.6,,1.8, NaN]); |
| 81 t([1.4, 1.6,,1.8, NaN]); |
| 82 %OptimizeFunctionOnNextCall(t); |
| 83 var a = [1.6, 1.8,,1.9, NaN]; |
| 84 t(a); |
| 85 a.__proto__ = [6,6,6,6,6]; |
| 86 assertEquals([1.6, {}, 6, 1.9, NaN], a); |
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