conditional-test-undefined-1.js (534B)
1 function g(array) { 2 // 1. Absent properties return |undefined| from CacheIR. 3 // 2. Tests on |undefined| are changed to |false| in CacheIR. 4 // 5 // When Warp compiling the CacheIR ops, the first test will then happen on 6 // a boolean, whereas the phi still sees the original undefined value. 7 if (array.does_not_exist || array.slice) { 8 return 1; 9 } 10 return 0; 11 } 12 13 function f() { 14 var array = []; 15 var r = 0; 16 for (let i = 0; i < 100; ++i) { 17 r += g(array); 18 } 19 assertEq(r, 100); 20 } 21 22 for (let i = 0; i < 2; ++i) f();