Add flag --check-function-fingerprints, it checks all function fingerprints of the intrinsifier and…

runtime/vm/object.h

Index: runtime/vm/object.h
===================================================================
--- runtime/vm/object.h	(revision 21695)
+++ runtime/vm/object.h	(working copy)
@@ -2189,6 +2189,10 @@
   // Eagerly compile all classes and functions in the library.
   static RawError* CompileAll();
 
+  // Checks function fingerprints. Prints mismatches and aborts if
+  // mismatch found.
+  static void CheckFunctionFingerprints();
+
  private:
   static const int kInitialImportsCapacity = 4;
   static const int kImportsCapacityIncrement = 8;