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

vm/raw_object.cc

Index: vm/raw_object.cc
===================================================================
--- vm/raw_object.cc	(revision 5450)
+++ vm/raw_object.cc	(working copy)
@@ -137,6 +137,12 @@
         instance_size = PcDescriptors::InstanceSize(num_descriptors);
         break;
       }
+      case kBitmap: {
+        const RawBitmap* raw_bitmap = reinterpret_cast<const RawBitmap*>(this);
+        intptr_t size = Smi::Value(raw_bitmap->ptr()->size_);

[srdjan, 2012/03/14 17:31:32]

size in bits or words?

[siva, 2012/03/14 22:54:20]

Renamed to size_in_bytes.

On 2012/03/14 17:31:32, srdjan wrote:

+        instance_size = Bitmap::InstanceSize(size);
+        break;
+      }
       case kLocalVarDescriptors: {
         const RawLocalVarDescriptors* raw_descriptors =
             reinterpret_cast<const RawLocalVarDescriptors*>(this);
@@ -372,6 +378,15 @@
 }
 
 
+intptr_t RawBitmap::VisitBitmapPointers(RawBitmap* raw_obj,
+                                        ObjectPointerVisitor* visitor) {
+  RawBitmap* obj = raw_obj->ptr();
+  intptr_t size = Smi::Value(obj->size_);
+  visitor->VisitPointer(reinterpret_cast<RawObject**>(&obj->size_));
+  return Bitmap::InstanceSize(size);
+}
+
+
 intptr_t RawLocalVarDescriptors::VisitLocalVarDescriptorsPointers(
     RawLocalVarDescriptors* raw_obj, ObjectPointerVisitor* visitor) {
   RawLocalVarDescriptors* obj = raw_obj->ptr();
@@ -661,5 +676,4 @@
   return JSRegExp::InstanceSize(length);
 }
 
-
 }  // namespace dart