1 // Copyright 2016 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 var a = new Float64Array(4); 8 a[2] *= -1; 9 a[3] *= -1; 10 assertEquals(0, a[0]); 11 assertEquals(0, a[1]); 12 assertEquals(-0, a[2]); 13 assertEquals(-0, a[3]); 14 15 function f1() { 16 var z = a[0]; 17 // Same register. 18 assertEquals(0, Math.min(z, z)); 19 } 20 21 function f2() { 22 // Different registers. 23 assertEquals(0, Math.min(a[0], a[1])); 24 } 25 26 function f3() { 27 // Zero and minus zero. 28 assertEquals(-0, Math.min(a[1], a[2])); 29 } 30 31 function f4() { 32 // Zero and minus zero, reversed order. 33 assertEquals(-0, Math.min(a[2], a[1])); 34 } 35 36 function f5() { 37 // Minus zero, same register. 38 var m_z = a[2]; 39 assertEquals(-0, Math.min(m_z, m_z)); 40 } 41 42 function f6() { 43 // Minus zero, different registers. 44 assertEquals(-0, Math.min(a[2], a[3])); 45 } 46 47 for (var i = 0; i < 3; i++) { 48 f1(); 49 f2(); 50 f3(); 51 f4(); 52 f5(); 53 f6(); 54 } 55 %OptimizeFunctionOnNextCall(f1); 56 %OptimizeFunctionOnNextCall(f2); 57 %OptimizeFunctionOnNextCall(f3); 58 %OptimizeFunctionOnNextCall(f4); 59 %OptimizeFunctionOnNextCall(f5); 60 %OptimizeFunctionOnNextCall(f6); 61 f1(); 62 f2(); 63 f3(); 64 f4(); 65 f5(); 66 f6(); 67
