Status: New
Owner: ----
New issue 3757 by [email protected]: XOR on ARMv6 when inside a loop
https://code.google.com/p/v8/issues/detail?id=3757
On ARMv6 when inside a loop, I am noticing bad results for XOR operations
when inputs are over 32 bits long.
This works as expected on X86_64.
Sample code:
var s1 = '1010101010101010101010101010101';
var s2 = '1111111111111111111111111111111';
for (var n=0; n<2; n++) {
if (n%2==0)
s1+='1';
else
s1+='0';
s2+='1';
console.log((parseInt(s1, 2)^parseInt(s2, 2)).toString(2));
}
Expected output:
101010101010101010101010101010
1010101010101010101010101010101
Actual output:
1010101010101010101010101010100
101010101001
I think temporary variable re-used might be to blame as this always works
as expected in the first iteration of the loop.
V8 version 3.22.24.19 (node.js v0.11.11-pre)
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