First part of new ICData infrastructure: use a wrapper object instead of an array.

runtime/vm/code_patcher_x64.cc

Index: runtime/vm/code_patcher_x64.cc
===================================================================
--- runtime/vm/code_patcher_x64.cc	(revision 4412)
+++ runtime/vm/code_patcher_x64.cc	(working copy)
@@ -8,7 +8,6 @@
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/cpu.h"
-#include "vm/ic_data.h"
 #include "vm/instructions.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
@@ -105,19 +104,19 @@
 };
 
 
-// A Dart instance call passes the ic-data array in RBX.
+// A Dart instance call passes the ic-data in RBX.
 class InstanceCall : public DartCallPattern {
  public:
   explicit InstanceCall(uword return_address)
       : DartCallPattern(return_address) {}
 
-  RawArray* ic_data() const {
-    Array& array = Array::Handle();
-    array ^= reinterpret_cast<RawObject*>(immediate_one());
-    return array.raw();
+  RawICData* ic_data() const {
+    ICData& ic_data = ICData::Handle();
+    ic_data ^= reinterpret_cast<RawObject*>(immediate_one());
+    return ic_data.raw();
   }
 
-  void SetIcData(const Array& value) {
+  void SetIcData(const ICData& value) {
     set_immediate_one(reinterpret_cast<int64_t>(value.raw()));
   }
 
@@ -230,24 +229,17 @@
   *num_arguments = call.argument_count();
   *num_named_arguments = call.named_argument_count();
   *target = call.target();
-  ICData ic_data(Array::ZoneHandle(call.ic_data()));
-  *function_name = ic_data.FunctionName();
+  const ICData& ic_data = ICData::Handle(call.ic_data());
+  *function_name = ic_data.target_name();
 }
 
 
-RawArray* CodePatcher::GetInstanceCallIcDataAt(uword return_address) {
+RawICData* CodePatcher::GetInstanceCallIcDataAt(uword return_address) {
   InstanceCall call(return_address);
   return call.ic_data();
 }
 
 
-void CodePatcher::SetInstanceCallIcDataAt(uword return_address,
-                                          const Array& ic_data) {
-  InstanceCall call(return_address);
-  call.SetIcData(ic_data);
-}
-
-
 intptr_t CodePatcher::InstanceCallSizeInBytes() {
   return DartCallPattern::kCallPatternSize;
 }