Optimize isFinite and isNaN.

test/mjsunit/parse-int-float.js

Index: test/mjsunit/parse-int-float.js
diff --git a/test/mjsunit/parse-int-float.js b/test/mjsunit/parse-int-float.js
index 2e4f6484370f2329213dd53ea5e85f8d7fabc7da..a4f09df9b4a24d6ff7ffdc30316183760fa7bde8 100644
--- a/test/mjsunit/parse-int-float.js
+++ b/test/mjsunit/parse-int-float.js
@@ -100,17 +100,4 @@ assertTrue(isNaN(parseFloat(0/0)));
 assertEquals(Infinity, parseFloat(1/0), "parseFloat Infinity");
 assertEquals(-Infinity, parseFloat(-1/0), "parseFloat -Infinity");
 
-var state;
-var throwingRadix = { valueOf: function() { state = "throwingRadix"; throw null; } };
-var throwingString = { toString: function() { state = "throwingString"; throw null; } };
-state = null;
-try { parseInt('123', throwingRadix); } catch (e) {}
-assertEquals(state, "throwingRadix");
 
-state = null;
-try { parseInt(throwingString, 10); } catch (e) {}
-assertEquals(state, "throwingString");
-
-state = null;
-try { parseInt(throwingString, throwingRadix); } catch (e) {}
-assertEquals(state, "throwingString");