Limit old space size in test which require a large new space.

test/mjsunit/compiler/math-floor-global.js

Index: test/mjsunit/compiler/math-floor-global.js
diff --git a/test/mjsunit/compiler/math-floor-global.js b/test/mjsunit/compiler/math-floor-global.js
index 3b9d1254537dce8d3dfb8a09ca0deacc278d57ff..d8b85b9751088cbd1f1a4ed01f1a4a742e3f7daf 100644
--- a/test/mjsunit/compiler/math-floor-global.js
+++ b/test/mjsunit/compiler/math-floor-global.js
@@ -25,7 +25,8 @@
 // (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: --max-new-space-size=128 --allow-natives-syntax
+// Flags: --max-old-space-size=256 --max-new-space-size=128
+// Flags: --allow-natives-syntax
 
 // Test inlining of Math.floor when assigned to a global.
 var flo = Math.floor;