First step towards implementing stack map descriptions for the optimizing compiler.

vm/raw_object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/raw_object.h"
 
 #include "vm/freelist.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/visitor.h"
@@ skipping 119 matching lines @@
         instance_size = TypeArguments::InstanceSize(array_length);
         break;
       }
       case kPcDescriptors: {
         const RawPcDescriptors* raw_descriptors =
             reinterpret_cast<const RawPcDescriptors*>(this);
         intptr_t num_descriptors = Smi::Value(raw_descriptors->ptr()->length_);
         instance_size = PcDescriptors::InstanceSize(num_descriptors);
         break;
       }
+      case kStackmap: {
+        const RawStackmap* map = reinterpret_cast<const RawStackmap*>(this);
+        intptr_t size_in_bytes = Smi::Value(map->ptr()->bitmap_size_in_bytes_);
+        instance_size = Stackmap::InstanceSize(size_in_bytes);
+        break;
+      }
       case kLocalVarDescriptors: {
         const RawLocalVarDescriptors* raw_descriptors =
             reinterpret_cast<const RawLocalVarDescriptors*>(this);
         intptr_t num_descriptors = raw_descriptors->ptr()->length_;
         instance_size = LocalVarDescriptors::InstanceSize(num_descriptors);
         break;
       }
       case kExceptionHandlers: {
         const RawExceptionHandlers* raw_handlers =
             reinterpret_cast<const RawExceptionHandlers*>(this);
@@ skipping 215 matching lines @@
 
 intptr_t RawPcDescriptors::VisitPcDescriptorsPointers(
     RawPcDescriptors* raw_obj, ObjectPointerVisitor* visitor) {
   RawPcDescriptors* obj = raw_obj->ptr();
   intptr_t length = Smi::Value(obj->length_);
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&obj->length_));
   return PcDescriptors::InstanceSize(length);
 }
 
 
+intptr_t RawStackmap::VisitStackmapPointers(RawStackmap* raw_obj,
+                                            ObjectPointerVisitor* visitor) {
+  RawStackmap* obj = raw_obj->ptr();
+  intptr_t size_in_bytes = Smi::Value(obj->bitmap_size_in_bytes_);
+  visitor->VisitPointers(raw_obj->from(), raw_obj->to());
+  return Stackmap::InstanceSize(size_in_bytes);
+}
+
+
 intptr_t RawLocalVarDescriptors::VisitLocalVarDescriptorsPointers(
     RawLocalVarDescriptors* raw_obj, ObjectPointerVisitor* visitor) {
   RawLocalVarDescriptors* obj = raw_obj->ptr();
   intptr_t len = obj->length_;
   visitor->VisitPointer(reinterpret_cast<RawObject**>(&obj->names_));
   return LocalVarDescriptors::InstanceSize(len);
 }
 
 
 intptr_t RawExceptionHandlers::VisitExceptionHandlersPointers(
@@ skipping 269 matching lines @@
 
 intptr_t RawJSRegExp::VisitJSRegExpPointers(RawJSRegExp* raw_obj,
                                             ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   intptr_t length = Smi::Value(raw_obj->ptr()->data_length_);
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return JSRegExp::InstanceSize(length);
 }
 
-
 }  // namespace dart