Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 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. |
| 27 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | // Flags: --allow-natives-syntax --noalways-opt |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 29 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | function mul(a, b) { |
| 31 | return a * b; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 32 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 33 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 34 | |
| 35 | mul(-1, 2); |
| 36 | mul(-1, 2); |
| 37 | %OptimizeFunctionOnNextCall(mul); |
| 38 | assertEquals(-2, mul(-1, 2)); |
| 39 | assertOptimized(mul); |
| 40 | |
| 41 | // Deopt on minus zero. |
| 42 | assertEquals(-0, mul(-1, 0)); |
| 43 | assertUnoptimized(mul); |
| 44 | |
| 45 | |
| 46 | function mul2(a, b) { |
| 47 | return a * b; |
| 48 | } |
| 49 | |
| 50 | mul2(-1, 2); |
| 51 | mul2(-1, 2); |
| 52 | %OptimizeFunctionOnNextCall(mul2); |
| 53 | |
| 54 | // 2^30 is a smi boundary on arm and ia32. |
| 55 | var two_30 = 1 << 30; |
| 56 | // 2^31 is a smi boundary on x64. |
| 57 | var two_31 = 2 * two_30; |
| 58 | |
| 59 | if (%IsValidSmi(two_31)) { |
| 60 | // Deopt on two_31 on x64. |
| 61 | assertEquals(two_31, mul2(-two_31, -1)); |
| 62 | assertUnoptimized(mul2); |
| 63 | } else { |
| 64 | // Deopt on two_30 on ia32. |
| 65 | assertEquals(two_30, mul2(-two_30, -1)); |
| 66 | assertUnoptimized(mul2); |
| 67 | } |