VM: New calling convention for generated code.

runtime/vm/stub_code.h

Index: runtime/vm/stub_code.h
diff --git a/runtime/vm/stub_code.h b/runtime/vm/stub_code.h
index 3a5ffc18693b4c2f048ce1b693c9e16b72aea35b..3b49def63f8f8ec13180b7cd6a04d44ad9122ffa 100644
--- a/runtime/vm/stub_code.h
+++ b/runtime/vm/stub_code.h
@@ -160,9 +160,8 @@ class StubCode : public AllStatic {
                            void (*GenerateStub)(Assembler* assembler));
 
   static void GenerateMegamorphicMissStub(Assembler* assembler);
-  static void GenerateAllocationStubForClass(
-      Assembler* assembler, const Class& cls,
-      uword* entry_patch_offset, uword* patch_code_pc_offset);
+  static void GenerateAllocationStubForClass(Assembler* assembler,
+                                             const Class& cls);
   static void GenerateNArgsCheckInlineCacheStub(
       Assembler* assembler,
       intptr_t num_args,
@@ -175,6 +174,12 @@ class StubCode : public AllStatic {
   static void GenerateOptimizedUsageCounterIncrement(Assembler* assembler);
 };
 
+
+enum DeoptStubKind {
+  kLazyDeopt,
+  kEagerDeopt
+};
+
 }  // namespace dart
 
 #endif  // VM_STUB_CODE_H_