test/mjsunit/compiler/regress-7.js

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// Test correct truncation of tagged values.
var G = 42;

function f() {
  var v = G;
  var w = v >> 0;
  return w;
}

for(var i=0; i<10000; i++) f();

assertEquals(G, f());
G = 2000000000;
assertEquals(G, f());