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Issue 258793002: ARM64: Generate optimized code for Math.floor and Math.round with double outputs. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Change C-style comments to C++-style comments Created 6 years, 7 months ago
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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
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30 var test_id = 0; 30 var test_id = 0;
31 31
32 function testFloor(expect, input) { 32 function testFloor(expect, input) {
33 var test = new Function('n', 33 var test = new Function('n',
34 '"' + (test_id++) + '";return Math.floor(n)'); 34 '"' + (test_id++) + '";return Math.floor(n)');
35 assertEquals(expect, test(input)); 35 assertEquals(expect, test(input));
36 assertEquals(expect, test(input)); 36 assertEquals(expect, test(input));
37 assertEquals(expect, test(input)); 37 assertEquals(expect, test(input));
38 %OptimizeFunctionOnNextCall(test); 38 %OptimizeFunctionOnNextCall(test);
39 assertEquals(expect, test(input)); 39 assertEquals(expect, test(input));
40
41 var test_double_output = new Function(
42 'n',
43 '"' + (test_id++) + '";return Math.floor(n) + -0.0');
44 assertEquals(expect, test_double_output(input));
45 assertEquals(expect, test_double_output(input));
46 assertEquals(expect, test_double_output(input));
47 %OptimizeFunctionOnNextCall(test_double_output);
48 assertEquals(expect, test_double_output(input));
40 } 49 }
41 50
42 function zero() { 51 function zero() {
43 var x = 0.5; 52 var x = 0.5;
44 return (function() { return x - 0.5; })(); 53 return (function() { return x - 0.5; })();
45 } 54 }
46 55
47 function test() { 56 function test() {
48 // 2^30 is a smi boundary. 57 // 2^30 is a smi boundary.
49 var two_30 = 1 << 30; 58 var two_30 = 1 << 30;
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67 testFloor(-two_30 + 1, -two_30 + 1 + 0.1); 76 testFloor(-two_30 + 1, -two_30 + 1 + 0.1);
68 testFloor(-two_30 + 1, -two_30 + 1 + 0.5); 77 testFloor(-two_30 + 1, -two_30 + 1 + 0.5);
69 testFloor(-two_30 + 1, -two_30 + 1 + 0.7); 78 testFloor(-two_30 + 1, -two_30 + 1 + 0.7);
70 } 79 }
71 80
72 81
73 // Test in a loop to cover the custom IC and GC-related issues. 82 // Test in a loop to cover the custom IC and GC-related issues.
74 for (var i = 0; i < 100; i++) { 83 for (var i = 0; i < 100; i++) {
75 test(); 84 test();
76 } 85 }
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