Remove some busy-OSR loops from tests using %OptimizeOsr().

test/mjsunit/regress/regress-2618.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 12 matching lines @@
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --use-osr --allow-natives-syntax --no-concurrent-osr
 
 function f() {
   do {
     do {
-      for (var i = 0; i < 10000000; i++) {
-        // This should run long enough to trigger OSR.
-      }
+      for (var i = 0; i < 10; i++) %OptimizeOsr();
     } while (false);
   } while (false);
 }
 
 f();
 assertTrue(%GetOptimizationCount(f) > 0 || %GetOptimizationStatus(f) == 4);
 
 function g() {
   for (var i = 0; i < 1; i++) { }
 
   do {
     do {
       for (var i = 0; i < 1; i++) { }
     } while (false);
   } while (false);
 
   do {
     do {
       do {
         do {
           do {
             do {
               do {
                 do {
-                  for (var i = 0; i < 10000000; i++) { }
+                  for (var i = 0; i < 10; i++) %OptimizeOsr();
                 } while (false);
               } while (false);
             } while (false);
           } while (false);
         } while (false);
       } while (false);
     } while (false);
   } while (false);
 }
 
 g();
 assertTrue(%GetOptimizationCount(g) > 0 || %GetOptimizationStatus(g) == 4);