src/share/vm/opto/superword.cpp

*** 2386,2395 ****
--- 2386,2400 ----
      if (n->in(1) == iv() && n->in(2)->is_Con()) {
        _scale = 1 << n->in(2)->get_int();
        return true;
      }
    } else if (opc == Op_ConvI2L) {
+     if (n->in(1)->Opcode() == Op_CastII &&
+         n->in(1)->as_CastII()->has_range_check()) {
+       // Skip range check dependent CastII nodes
+       n = n->in(1);
+     }
      if (scaled_iv_plus_offset(n->in(1))) {
        return true;
      }
    } else if (opc == Op_LShiftL) {
      if (!has_iv() && _invar == NULL) {