Adds more DBC assembler tests.

runtime/vm/stack_frame.cc

Index: runtime/vm/stack_frame.cc
diff --git a/runtime/vm/stack_frame.cc b/runtime/vm/stack_frame.cc
index aac196b171d3fe197c0b02e68bf0f820d74aa89c..a53702606ae88d7b40de42a0e7fa4a074a8a7656 100644
--- a/runtime/vm/stack_frame.cc
+++ b/runtime/vm/stack_frame.cc
@@ -69,10 +69,10 @@ void ExitFrame::VisitObjectPointers(ObjectPointerVisitor* visitor) {
 
 
 void EntryFrame::VisitObjectPointers(ObjectPointerVisitor* visitor) {
-#if !defined(TARGET_ARCH_DBC)
   ASSERT(thread() == Thread::Current());
   // Visit objects between SP and (FP - callee_save_area).
   ASSERT(visitor != NULL);
+#if !defined(TARGET_ARCH_DBC)
   RawObject** first = reinterpret_cast<RawObject**>(sp());
   RawObject** last = reinterpret_cast<RawObject**>(
       fp() + (kExitLinkSlotFromEntryFp - 1) * kWordSize);
@@ -87,6 +87,8 @@ void EntryFrame::VisitObjectPointers(ObjectPointerVisitor* visitor) {
 
 
 void StackFrame::VisitObjectPointers(ObjectPointerVisitor* visitor) {
+  ASSERT(thread() == Thread::Current());
+  ASSERT(visitor != NULL);
 #if !defined(TARGET_ARCH_DBC)
   // NOTE: This code runs while GC is in progress and runs within
   // a NoHandleScope block. Hence it is not ok to use regular Zone or
@@ -94,8 +96,6 @@ void StackFrame::VisitObjectPointers(ObjectPointerVisitor* visitor) {
   // these handles are not traversed. The use of handles is mainly to
   // be able to reuse the handle based code and avoid having to add
   // helper functions to the raw object interface.
-  ASSERT(thread() == Thread::Current());
-  ASSERT(visitor != NULL);
   NoSafepointScope no_safepoint;
   Code code;
   code = LookupDartCode();