# HG changeset patch
# User sjohanss
# Date 1573474826 -3600
# Node ID 333c2b653434485f2ec93ac13881c7eadf9743ab
# Parent  d3f1cb09b7045002c6a55f570d0f2a885d61b1ef
8233065: PSParallelCompact::move_and_update is unused and should be removed
Reviewed-by: lkorinth, tschatzl

diff -r d3f1cb09b704 -r 333c2b653434 src/hotspot/share/gc/parallel/psParallelCompact.cpp
--- a/src/hotspot/share/gc/parallel/psParallelCompact.cpp	Mon Nov 11 12:06:22 2019 +0100
+++ b/src/hotspot/share/gc/parallel/psParallelCompact.cpp	Mon Nov 11 13:20:26 2019 +0100
@@ -3201,46 +3201,6 @@
   }
 }
 
-void
-PSParallelCompact::move_and_update(ParCompactionManager* cm, SpaceId space_id) {
-  const MutableSpace* sp = space(space_id);
-  if (sp->is_empty()) {
-    return;
-  }
-
-  ParallelCompactData& sd = PSParallelCompact::summary_data();
-  ParMarkBitMap* const bitmap = mark_bitmap();
-  HeapWord* const dp_addr = dense_prefix(space_id);
-  HeapWord* beg_addr = sp->bottom();
-  HeapWord* end_addr = sp->top();
-
-  assert(beg_addr <= dp_addr && dp_addr <= end_addr, "bad dense prefix");
-
-  const size_t beg_region = sd.addr_to_region_idx(beg_addr);
-  const size_t dp_region = sd.addr_to_region_idx(dp_addr);
-  if (beg_region < dp_region) {
-    update_and_deadwood_in_dense_prefix(cm, space_id, beg_region, dp_region);
-  }
-
-  // The destination of the first live object that starts in the region is one
-  // past the end of the partial object entering the region (if any).
-  HeapWord* const dest_addr = sd.partial_obj_end(dp_region);
-  HeapWord* const new_top = _space_info[space_id].new_top();
-  assert(new_top >= dest_addr, "bad new_top value");
-  const size_t words = pointer_delta(new_top, dest_addr);
-
-  if (words > 0) {
-    ObjectStartArray* start_array = _space_info[space_id].start_array();
-    MoveAndUpdateClosure closure(bitmap, cm, start_array, dest_addr, words);
-
-    ParMarkBitMap::IterationStatus status;
-    status = bitmap->iterate(&closure, dest_addr, end_addr);
-    assert(status == ParMarkBitMap::full, "iteration not complete");
-    assert(bitmap->find_obj_beg(closure.source(), end_addr) == end_addr,
-           "live objects skipped because closure is full");
-  }
-}
-
 jlong PSParallelCompact::millis_since_last_gc() {
   // We need a monotonically non-decreasing time in ms but
   // os::javaTimeMillis() does not guarantee monotonicity.
diff -r d3f1cb09b704 -r 333c2b653434 src/hotspot/share/gc/parallel/psParallelCompact.hpp
--- a/src/hotspot/share/gc/parallel/psParallelCompact.hpp	Mon Nov 11 12:06:22 2019 +0100
+++ b/src/hotspot/share/gc/parallel/psParallelCompact.hpp	Mon Nov 11 13:20:26 2019 +0100
@@ -1130,9 +1130,6 @@
   static inline HeapWord*         dense_prefix(SpaceId space_id);
   static inline ObjectStartArray* start_array(SpaceId space_id);
 
-  // Move and update the live objects in the specified space.
-  static void move_and_update(ParCompactionManager* cm, SpaceId space_id);
-
   // Process the end of the given region range in the dense prefix.
   // This includes saving any object not updated.
   static void dense_prefix_regions_epilogue(ParCompactionManager* cm,