Fix OSR for nested loops.

test/mjsunit/regress/regress-2618.js

Index: test/mjsunit/regress/regress-2618.js
diff --git a/test/mjsunit/regress/regress-2451.js b/test/mjsunit/regress/regress-2618.js
similarity index 68%
copy from test/mjsunit/regress/regress-2451.js
copy to test/mjsunit/regress/regress-2618.js
index 465e4e68c26f3e3e119cbaf82d50c8f83c6efa9a..638b71e6228b9f5c5fcfffeafcb0d72e606faf9b 100644
--- a/test/mjsunit/regress/regress-2451.js
+++ b/test/mjsunit/regress/regress-2618.js
@@ -25,17 +25,50 @@
 // (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: --allow-natives-syntax
+// Flags: --use-osr --allow-natives-syntax
 
 function f() {
-  assertEquals(-1.0, Math.round(-1.5));
-  assertEquals(-2.0, Math.round(-2.5));
-  assertEquals(-1.0, Math.round(-0.5000000000000001));
+  do {
+    do {
+      for (i = 0; i < 10000000; i++) {
+        // This should run long enough to trigger OSR.
+      }
+    } while (false);
+  } while (false);
 }
 
 f();
-f();
-%OptimizeFunctionOnNextCall(f);
-f();
 assertTrue(%GetOptimizationStatus(f) != 2);
 
+
+function g() {
+  for (var i = 0; i < 1; i++) { }
+
+  do {
+    do {
+      for (i = 0; i < 1; i++) { }
+    } while (false);
+  } while (false);
+
+  do {
+    do {
+      do {
+        do {
+          do {
+            do {
+              do {
+                do {
+                  for (i = 0; i < 10000000; i++) { }
+                } while (false);
+              } while (false);
+            } while (false);
+          } while (false);
+        } while (false);
+      } while (false);
+    } while (false);
+  } while (false);
+}
+
+g();
+assertTrue(%GetOptimizationStatus(g) != 2);
+