Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1 | // Copyright 2010 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 |
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Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 28 | // Test constant folding of smi operations that overflow a 32-bit int |
| 29 | // See http://code.google.com/p/v8/issues/detail?id=580 |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 30 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 31 | function num_ops() { |
| 32 | var x; |
| 33 | var tmp = 0; |
| 34 | x = (tmp = 1578221999, tmp)+(tmp = 572285336, tmp); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame^] | 35 | assertEquals(2150507335, x, "++"); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 36 | x = 1578221999 + 572285336; |
| 37 | assertEquals(2150507335, x); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 38 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 39 | x = (tmp = -1500000000, tmp)+(tmp = -2000000000, tmp); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame^] | 40 | assertEquals(-3500000000, x, "+-"); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 41 | x = -1500000000 + -2000000000; |
| 42 | assertEquals(-3500000000, x); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 43 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 44 | x = (tmp = 1578221999, tmp)-(tmp = -572285336, tmp); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame^] | 45 | assertEquals(2150507335, x, "--"); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 46 | x = 1578221999 - -572285336; |
| 47 | assertEquals(2150507335, x); |
| 48 | |
| 49 | x = (tmp = -1500000000, tmp)-(tmp = 2000000000, tmp); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame^] | 50 | assertEquals(-3500000000, x, "-+"); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 51 | x = -1500000000 - 2000000000; |
| 52 | assertEquals(-3500000000, x); |
| 53 | } |
| 54 | |
| 55 | num_ops(); |