VM: New calling convention for generated code.

runtime/vm/raw_object.cc

Index: runtime/vm/raw_object.cc
diff --git a/runtime/vm/raw_object.cc b/runtime/vm/raw_object.cc
index 67f0afc13733f31483bd1737916cfa10678c363d..11c21557492c6aca3911335a4348f05ff542ab86 100644
--- a/runtime/vm/raw_object.cc
+++ b/runtime/vm/raw_object.cc
@@ -444,9 +444,9 @@ intptr_t RawFunction::VisitFunctionPointers(RawFunction* raw_obj,
   }
   visitor->VisitPointers(raw_obj->from(), raw_obj->to_no_code());
 
-  if (ShouldVisitCode(raw_obj->ptr()->instructions_->ptr()->code_)) {
+  if (ShouldVisitCode(raw_obj->ptr()->code_)) {
     visitor->VisitPointer(
-        reinterpret_cast<RawObject**>(&raw_obj->ptr()->instructions_));
+        reinterpret_cast<RawObject**>(&raw_obj->ptr()->code_));
   } else {
     visitor->skipped_code_functions()->Add(raw_obj);
   }
@@ -510,6 +510,16 @@ intptr_t RawNamespace::VisitNamespacePointers(
 }
 
 
+bool RawCode::ContainsPC(RawObject* raw_obj, uword pc) {
+  uword tags = raw_obj->ptr()->tags_;
+  if (RawObject::ClassIdTag::decode(tags) == kCodeCid) {
+    RawCode* raw_code = reinterpret_cast<RawCode*>(raw_obj);
+    return RawInstructions::ContainsPC(raw_code->ptr()->instructions_, pc);
+  }
+  return false;
+}
+
+
 intptr_t RawCode::VisitCodePointers(RawCode* raw_obj,
                                     ObjectPointerVisitor* visitor) {
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
@@ -551,7 +561,6 @@ intptr_t RawObjectPool::VisitObjectPoolPointers(
 intptr_t RawInstructions::VisitInstructionsPointers(
     RawInstructions* raw_obj, ObjectPointerVisitor* visitor) {
   RawInstructions* obj = raw_obj->ptr();
-  visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return Instructions::InstanceSize(obj->size_);
 }