Change static calls in unoptimized code to always call via a stub. Using ICData, the call count of …

runtime/vm/code_patcher.h

Index: runtime/vm/code_patcher.h
===================================================================
--- runtime/vm/code_patcher.h	(revision 24306)
+++ runtime/vm/code_patcher.h	(working copy)
@@ -17,6 +17,7 @@
 class Function;
 class ICData;
 class RawArray;
+class RawFunction;
 class RawICData;
 class String;
 
@@ -55,6 +56,10 @@
                                  const Code& code,
                                  ICData* ic_data);
 
+  // Return target of an unoptimized static call (calls target via a stub).
+  static RawFunction* GetUnoptimizedStaticCallTargetAt(uword return_address,
+                                                       const Code& code);
+
   // Return the arguments descriptor array of the closure call
   // before the given return address.
   static RawArray* GetClosureArgDescAt(uword return_address,