Speed up quicksort test to avoid timeouts on simulators.

test/mjsunit/regress/regress-2185-2.js

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 // These tests used to time out before this was fixed.
 
-var LEN = 3e4;
+var LEN = 2e4;
 
 function short() {
   var sum = 0;
-  for (var i = 0; i < 10000; i++) {
+  for (var i = 0; i < 1000; i++) {
     var a = [1, 4, 34, 23, 6, 123, 3, 2, 11, 515, 4, 33, 22, 2, 2, 1, 0, 123,
             23, 42, 43, 1002, 44, 43, 101, 23, 55, 11, 101, 102, 45, 11, 404,
             31415, 34, 53, 453, 45, 34, 5, 2, 35, 5, 345, 36, 45, 345, 3, 45,
             3, 5, 5, 2, 2342344, 2234, 23, 2718, 1500, 2, 19, 22, 43, 41, 0,
             -1, 33, 45, 78];
     a.sort(function(a, b) { return a - b; });
     sum += a[0];
   }
   return sum;
 }
@@ skipping 91 matching lines @@
 bench("down", desc);
 bench("saw 1000", saw1);
 bench("saw 500", saw2);
 bench("saw 200", saw3);
 bench("saw 200 symmetric", saw4);
 bench("saw 200 down", saw4);
 bench("up, down", asc_desc);
 bench("up, up", asc_asc);
 bench("down, down", desc_desc);
 bench("down, up", desc_asc);