js/src/jit-test/tests/ion/recover-rest-osr.js


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setJitCompilerOption("baseline.warmup.trigger", 0);
setJitCompilerOption("ion.warmup.trigger", 120);
gczeal(0);

with ({}) {}

function bar(...rest) {
  // |rest| can be recovered, even if this is inlined into an OSR script.
  assertRecoveredOnBailout(rest, true);
  return rest[0];
}

function foo(n, ...rest) {
  // |rest| for an OSR script can't be recovered.
  assertRecoveredOnBailout(rest, false);
  var sum = 0;
  for (var i = 0; i < n; i++) {
    sum += bar(i);
  }
  trialInline();
  return sum;
}

// Trigger trial-inlining of bar into foo.
foo(110);

// OSR-compile foo.
assertEq(foo(1000), 499500);