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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 | 27 |
| 28 // Flags: --allow-natives-syntax | 28 // Flags: --allow-natives-syntax |
| 29 // Test expressions that can be computed with a multiply-add instruction. | |
| 30 | 29 |
| 31 function f(a, b, c) { | 30 "use strict"; |
| 32 return a - b * c; | |
| 33 } | |
| 34 | 31 |
| 35 function g(a, b, c) { | 32 // Function is defined on the prototype chain. |
| 36 return a * b - c; | 33 var holder = { f: function() { return 42; } }; |
| 37 } | 34 var receiver = { }; |
| 35 receiver.__proto__ = { }; |
| 36 receiver.__proto__.__proto__ = holder; |
| 38 | 37 |
| 39 function h(a, b, c, d) { | 38 // Inline two levels. |
| 40 return a * b - c * d; | 39 function h(o) { return o.f.apply(this, arguments); } |
| 41 } | 40 function g(o) { return h(o); } |
| 42 | 41 |
| 43 assertEquals(-5.41, f(1.1, 2.1, 3.1)); | 42 // Collect type information for apply call. |
| 44 assertEquals(-5.41, f(1.1, 2.1, 3.1)); | 43 assertEquals(42, g(receiver)); |
| 45 %OptimizeFunctionOnNextCall(f); | 44 assertEquals(42, g(receiver)); |
| 46 assertEquals(-5.41, f(1.1, 2.1, 3.1)); | |
| 47 | 45 |
| 48 assertEquals(8.36, g(2.2, 3.3, -1.1)); | 46 // Sneakily remove the function from the prototype chain. |
| 49 assertEquals(8.36, g(2.2, 3.3, -1.1)); | 47 // The receiver map does not change. |
| 48 receiver.__proto__.__proto__ = {}; |
| 49 |
| 50 // Lookup of o.f during graph creation fails. |
| 50 %OptimizeFunctionOnNextCall(g); | 51 %OptimizeFunctionOnNextCall(g); |
| 51 assertEquals(8.36, g(2.2, 3.3, -1.1)); | |
| 52 | 52 |
| 53 assertEquals(-1.5, h(1.5, 3.0, 12, 0.5)); | 53 assertThrows(function() { g(receiver); }); |
| 54 assertEquals(-1.5, h(1.5, 3.0, 12, 0.5)); | |
| 55 %OptimizeFunctionOnNextCall(h); | |
| 56 assertEquals(-1.5, h(1.5, 3.0, 12, 0.5)); | |
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