8324513: Inline ContiguousSpace::object_iterate_from

Reviewed-by: stefank

src/hotspot/share/gc/shared/space.cpp

@@ -146,14 +146,11 @@ bool Space::obj_is_alive(const HeapWord* p) const {
 }
 
 void ContiguousSpace::object_iterate(ObjectClosure* blk) {
-  if (is_empty()) return;
-  object_iterate_from(bottom(), blk);
-}
-
-void ContiguousSpace::object_iterate_from(HeapWord* mark, ObjectClosure* blk) {
-  while (mark < top()) {
-    blk->do_object(cast_to_oop(mark));
-    mark += cast_to_oop(mark)->size();
+  HeapWord* addr = bottom();
+  while (addr < top()) {
+    oop obj = cast_to_oop(addr);
+    blk->do_object(obj);
+    addr += obj->size();
   }
 }
 

src/hotspot/share/gc/shared/space.hpp

@@ -283,11 +283,6 @@ class ContiguousSpace: public Space {
   template <typename OopClosureType>
   void oop_since_save_marks_iterate(OopClosureType* blk);
 
-  // Same as object_iterate, but starting from "mark", which is required
-  // to denote the start of an object.  Objects allocated by
-  // applications of the closure *are* included in the iteration.
-  virtual void object_iterate_from(HeapWord* mark, ObjectClosure* blk);
-
   // Very inefficient implementation.
   HeapWord* block_start_const(const void* p) const override;
   size_t block_size(const HeapWord* p) const override;