===================test.js==================
for (let v0 = 0; v0 < 100; v0++) {
  const v2 = this.isPureNaN(v0);
  print(v2)
}
============================================


Run args: ./jsc -f test.js --useConcurrentJIT=0  --jitPolicyScale=0.01


JSC prints `true` in DFG. The correct result should be `false`.