First step towards making JumpTarget work on ARM. Instead...

src/jump-target-light-inl.h

Index: src/jump-target-light-inl.h
===================================================================
--- src/jump-target-light-inl.h	(revision 4592)
+++ src/jump-target-light-inl.h	(working copy)
@@ -33,10 +33,20 @@
 namespace v8 {
 namespace internal {
 
-void JumpTarget::InitializeEntryElement(int index, FrameElement* target) {
-  UNIMPLEMENTED();
+// Construct a jump target.
+JumpTarget::JumpTarget(Directionality direction)
+    : entry_frame_set_(false),
+      entry_frame_(kInvalidVirtualFrameInitializer) {
 }
 
+JumpTarget::JumpTarget()
+    : entry_frame_set_(false),
+      entry_frame_(kInvalidVirtualFrameInitializer) {
+}
+
+
+BreakTarget::BreakTarget() { }
+
 } }  // namespace v8::internal
 
 #endif  // V8_JUMP_TARGET_LIGHT_INL_H_