1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --allow-natives-syntax 6 7 // ----------------------------------------------------------------------------- 8 9 function SmiTaggingCanOverflow(x) { 10 x = x | 0; 11 if (x == 0) return; 12 return x; 13 } 14 15 SmiTaggingCanOverflow(2147483647); 16 SmiTaggingCanOverflow(2147483647); 17 %OptimizeFunctionOnNextCall(SmiTaggingCanOverflow); 18 assertEquals(2147483647, SmiTaggingCanOverflow(2147483647)); 19 20 // ----------------------------------------------------------------------------- 21 22 function ModILeftCanBeNegative() { 23 var x = 0; 24 for (var i = -1; i < 0; ++i) x = i % 2; 25 return x; 26 } 27 28 ModILeftCanBeNegative(); 29 %OptimizeFunctionOnNextCall(ModILeftCanBeNegative); 30 assertEquals(-1, ModILeftCanBeNegative()); 31 32 // ----------------------------------------------------------------------------- 33 34 function ModIRightCanBeZero() { 35 var x = 0; 36 for (var i = -1; i <= 0; ++i) x = (2 % i) | 0; 37 return x; 38 } 39 40 ModIRightCanBeZero(); 41 %OptimizeFunctionOnNextCall(ModIRightCanBeZero); 42 ModIRightCanBeZero(); 43
