[type-profile] Add test for fall-off return.

Add a test case as reminder for future work.

There is no return statement, therefore 'undefined' should be the type.

R=mstarzinger@chromium.org
BUG=v8:5935

Review-Url: https://codereview.chromium.org/2768503002
Cr-Commit-Position: refs/heads/master@{#44009}

test/message/type-profile/collect-type-profile.js

@@ -14,6 +14,10 @@ function testFunction(param, flag) {
   return second_var;
 }
 
+class MyClass {
+  constructor() {}
+}
+
 %PrintTypeProfile(testFunction);
 
 testFunction({});
@@ -26,22 +30,10 @@ testFunction(undefined);
 testFunction('hello', true);
 testFunction({x: 12}, true);
 testFunction({x: 12});
+testFunction(new MyClass());
 
 %PrintTypeProfile(testFunction);
 
-class MyClass {
-  constructor() {}
-}
-
-
-function testConstructorNames(param) {
-  var my_var = param;
-}
-
-testConstructorNames(new MyClass());
-testConstructorNames({});
-testConstructorNames(2);
-
 function testReturnOfNonVariable() {
   return 32;
 }
@@ -55,11 +47,18 @@ function try_finally() {
     return "nope, string is better"
   }
 }
-
 try_finally();
-
 %PrintTypeProfile(try_finally);
 
+// TODO(franzih): 'undefined' should be the return type.
+function fall_off() {
+  //nothing
+}
+fall_off();
+%PrintTypeProfile(fall_off);
+
+
+
 
 testReturnOfNonVariable();
 

test/message/type-profile/collect-type-profile.out

@@ -13,11 +13,14 @@ Function: testFunction
 374: string
 374: Object
 424: Object
+424: MyClass
 
 Function: try_finally
-1157: number
-1186: string
+1032: number
+1061: string
 
-*%(basename)s:66: throw otherwise test fails with --stress-opt
+Function: fall_off
+
+*%(basename)s:65: throw otherwise test fails with --stress-opt
 throw "throw otherwise test fails with --stress-opt";
 ^