[crankshaft] Address the deoptimization loops of Math.floor, Math.round and Math.ceil.

test/mjsunit/regress/regress-crbug-476477-2.js

Index: test/mjsunit/regress/regress-crbug-476477-2.js
diff --git a/test/mjsunit/regress/regress-3650-3.js b/test/mjsunit/regress/regress-crbug-476477-2.js
similarity index 64%
copy from test/mjsunit/regress/regress-3650-3.js
copy to test/mjsunit/regress/regress-crbug-476477-2.js
index 013e4df2834e20435982300303eb6260eb41b2be..4dbb41b7d4ced16b488f6e1d00f184446bd41368 100644
--- a/test/mjsunit/regress/regress-3650-3.js
+++ b/test/mjsunit/regress/regress-crbug-476477-2.js
@@ -4,14 +4,13 @@
 
 // Flags: --allow-natives-syntax
 
-function foo(a) {
-  for (var d in a) {
-    delete a[1];
-  }
+function foo(x) {
+  var s = Math.floor(x / 3600);
+  Math.floor(s);
+  return s % 24;
 }
 
-foo([1,2,3]);
-foo([2,3,4]);
+foo(12345678);
+foo(12345678);
 %OptimizeFunctionOnNextCall(foo);
-foo([1,2,3]);
-assertOptimized(foo);
+foo(12345678);