Improve polymorphic inlining of int/int double/double operations.

runtime/vm/intrinsifier.h

Index: runtime/vm/intrinsifier.h
===================================================================
--- runtime/vm/intrinsifier.h	(revision 39328)
+++ runtime/vm/intrinsifier.h	(working copy)
@@ -148,6 +148,7 @@
 // Forward declarations.
 class Assembler;
 class Function;
+class Library;
 
 class Intrinsifier : public AllStatic {
  public:
@@ -158,6 +159,12 @@
   static bool CanIntrinsify(const Function& function);
   static void InitializeState();
 
+  static bool TestFunction(const Library& lib,
+                           const char* class_name,
+                           const char* function_name,
+                           const char* test_class_name,
+                           const char* test_function_name);
+
  private:
 #define DECLARE_FUNCTION(test_class_name, test_function_name, destination, fp) \
   static void destination(Assembler* assembler);