Crash with --heapGraphFilePath

[NTillmann]

Try prepacking this with --heapGraphFilePath:

(function () {
  let a = __abstract("number", "a");
  let b, c;
  global.f = function() {
    b = a + 42;
    c = a + 42;
  }
  __optimize(f);
})();

And without that option, we generate the following dubious code. Note the duplicate var __captured__scope_2 = __scope_0[0] || __scope_1(0); statements, and the lack of CSE for 42 + _3.

(function () {
  var __scope_0 = Array(1);

  var __scope_1 = function (__selector) {
    var __captured;

    switch (__selector) {
      case 0:
        __captured = [void 0, void 0];
        break;

      default:
        throw new Error("Unknown scope selector");
    }

    __scope_0[__selector] = __captured;
    return __captured;
  };

  var _0 = function () {
    var __captured__scope_2 = __scope_0[0] || __scope_1(0);

    var __captured__scope_2 = __scope_0[0] || __scope_1(0);

    var _3 = a;

    var _1 = 42 + _3;

    __captured__scope_2[0] = _1;

    var _4 = 42 + _3;

    __captured__scope_2[1] = _4;
  };

  f = _0;
})();

[NTillmann]

The the duplicate var __captured__scope_2 = __scope_0[0] || __scope_1(0); statements, and the lack of CSE for 42 + _3 have been addressed by now, but the crash remains.

[NTillmann]

No longer repros.