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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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 | 28 // Flags: --allow-natives-syntax |
29 | 29 |
30 // Regression test for GVN on field loads. | 30 // This is a regression test for overlapping key and value registers. |
31 | 31 |
32 function bar() {} | 32 types = [Array, Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, |
33 Uint32Array, Uint8ClampedArray, Float32Array, Float64Array]; | |
33 | 34 |
34 // Make sure there is a transition on adding "bar" inobject property. | 35 results1 = [-2, -2, 254, -2, 65534, -2, 4294967294, 0, -2, -2]; |
35 var b = new bar(); | 36 results2 = [undefined, -1, 255, -1, 65535, -1, 4294967295, 0, -1, -1]; |
36 b.bar = "bar"; | 37 results3 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]; |
38 results4 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]; | |
rossberg
2012/07/02 10:40:21
Could you declare all the above variables with 'va
| |
37 | 39 |
38 function test(a) { | 40 const kElementCount = 40; |
39 var b = new Array(10); | |
40 for (var i = 0; i < 10; i++) { | |
41 b[i] = new bar(); | |
42 } | |
43 | 41 |
44 for (var i = 0; i < 10; i++) { | 42 function do_slice(a) { |
45 b[i].bar = a.foo; | 43 return Array.prototype.slice.call(a, 4, 8); |
46 } | |
47 } | 44 } |
48 | 45 |
49 // Create an object with fast backing store properties. | 46 for (var t = 0; t < types.length; t++) { |
50 var a = {}; | 47 var type = types[t]; |
51 a.p1 = ""; | 48 var a = new type(kElementCount); |
52 a.p2 = ""; | 49 for (i = 0; i < kElementCount; ++i ) { |
rossberg
2012/07/02 10:40:21
This could take a 'var', too.
| |
53 a.p3 = ""; | 50 a[i] = i-6; |
54 a.p4 = ""; | 51 } |
55 a.p5 = ""; | 52 delete a[5]; |
56 a.p6 = ""; | 53 var sliced = do_slice(a); |
57 a.p7 = ""; | 54 |
58 a.p8 = ""; | 55 %ClearFunctionTypeFeedback(do_slice); |
59 a.p9 = ""; | 56 assertEquals(results1[t], sliced[0]); |
60 a.p10 = ""; | 57 assertEquals(results2[t], sliced[1]); |
61 a.p11 = ""; | 58 assertEquals(results3[t], sliced[2]); |
62 a.foo = "foo"; | 59 assertEquals(results4[t], sliced[3]); |
63 for (var i = 0; i < 5; i++) { | |
64 test(a); | |
65 } | 60 } |
66 %OptimizeFunctionOnNextCall(test); | |
67 test(a); | |
68 | |
69 test(""); | |
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