[turbofan] Fix lowering of Math.max for integral inputs.

test/mjsunit/compiler/regress-468162.js

Index: test/mjsunit/compiler/regress-468162.js
diff --git a/test/mjsunit/regress/regress-crbug-455644.js b/test/mjsunit/compiler/regress-468162.js
similarity index 57%
copy from test/mjsunit/regress/regress-crbug-455644.js
copy to test/mjsunit/compiler/regress-468162.js
index 4993d857a89f620df2b0d1f9813a2a382a77bd8d..47bff032d584a37824d55dd1881e8a81a258b7e8 100644
--- a/test/mjsunit/regress/regress-crbug-455644.js
+++ b/test/mjsunit/compiler/regress-468162.js
@@ -2,11 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-(function f() {
-  do { return 23; } while(false);
-  with (0) {
-    try {
-      return 42;
-    } finally {}
-  }
+var asm = (function() {
+  "use asm";
+  var max = Math.max;
+  return function f() { return max(0, -17); };
 })();
+
+assertEquals(0, asm());