diff --git a/vm/compaction.cpp b/vm/compaction.cpp
index 74dd8935da..399971805b 100644
--- a/vm/compaction.cpp
+++ b/vm/compaction.cpp
@@ -110,7 +110,7 @@ struct code_block_compaction_updater {
 	}
 };
 
-void factor_vm::collect_full_compact(bool trace_contexts_p)
+void factor_vm::collect_compact_impl(bool trace_contexts_p)
 {
 	tenured_space *tenured = data->tenured;
 	mark_bits<object> *data_forwarding_map = &tenured->state;
diff --git a/vm/full_collector.cpp b/vm/full_collector.cpp
index 65d0edbd47..09e32574fd 100644
--- a/vm/full_collector.cpp
+++ b/vm/full_collector.cpp
@@ -40,7 +40,7 @@ struct object_start_map_updater {
 	}
 };
 
-void factor_vm::collect_full_mark(bool trace_contexts_p)
+void factor_vm::collect_mark_impl(bool trace_contexts_p)
 {
 	full_collector collector(this);
 
@@ -74,43 +74,21 @@ void factor_vm::collect_full_mark(bool trace_contexts_p)
 	code->clear_remembered_set();
 }
 
-void factor_vm::collect_full_sweep()
+void factor_vm::collect_sweep_impl()
 {
 	data->tenured->starts.clear_object_start_offsets();
 	object_start_map_updater updater(&data->tenured->starts);
 	data->tenured->sweep(updater);
 }
 
-void factor_vm::collect_growing_heap(cell requested_bytes,
-	bool trace_contexts_p,
-	bool compact_p)
+void factor_vm::collect_growing_heap(cell requested_bytes, bool trace_contexts_p)
 {
 	/* Grow the data heap and copy all live objects to the new heap. */
 	data_heap *old = data;
 	set_data_heap(data->grow(requested_bytes));
-	collect_full_mark(trace_contexts_p);
+	collect_mark_impl(trace_contexts_p);
+	collect_compact_impl(trace_contexts_p);
 	delete old;
-
-	if(compact_p)
-		collect_full_compact(trace_contexts_p);
-	else
-	{
-		collect_full_sweep();
-		relocate_code_heap();
-	}
-}
-
-void factor_vm::collect_full(bool trace_contexts_p, bool compact_p)
-{
-	collect_full_mark(trace_contexts_p);
-
-	if(compact_p)
-		collect_full_compact(trace_contexts_p);
-	else
-	{
-		collect_full_sweep();
-		update_code_heap_words_and_literals();
-	}
 }
 
 }
diff --git a/vm/gc.cpp b/vm/gc.cpp
index 4b530172c1..2c361bcd19 100755
--- a/vm/gc.cpp
+++ b/vm/gc.cpp
@@ -25,10 +25,7 @@ void factor_vm::record_gc_stats(generation_statistics *stats)
 		stats->max_gc_time = gc_elapsed;
 }
 
-void factor_vm::gc(gc_op op,
-	cell requested_bytes,
-	bool trace_contexts_p,
-	bool compact_p)
+void factor_vm::gc(gc_op op, cell requested_bytes, bool trace_contexts_p)
 {
 	assert(!gc_off);
 	assert(!current_gc);
@@ -57,6 +54,7 @@ void factor_vm::gc(gc_op op,
 			current_gc->op = collect_full_op;
 			break;
 		case collect_full_op:
+		case collect_compact_op:
 			current_gc->op = collect_growing_heap_op;
 			break;
 		default:
@@ -83,11 +81,18 @@ void factor_vm::gc(gc_op op,
 		record_gc_stats(&gc_stats.aging_stats);
 		break;
 	case collect_full_op:
-		collect_full(trace_contexts_p,compact_p);
+		collect_mark_impl(trace_contexts_p);
+		collect_sweep_impl();
+		update_code_heap_words_and_literals();
+		record_gc_stats(&gc_stats.full_stats);
+		break;
+	case collect_compact_op:
+		collect_mark_impl(trace_contexts_p);
+		collect_compact_impl(trace_contexts_p);
 		record_gc_stats(&gc_stats.full_stats);
 		break;
 	case collect_growing_heap_op:
-		collect_growing_heap(requested_bytes,trace_contexts_p,compact_p);
+		collect_growing_heap(requested_bytes,trace_contexts_p);
 		record_gc_stats(&gc_stats.full_stats);
 		break;
 	default:
@@ -106,24 +111,21 @@ void factor_vm::primitive_minor_gc()
 {
 	gc(collect_nursery_op,
 		0, /* requested size */
-		true, /* trace contexts? */
-		false /* compact code heap? */);
+		true /* trace contexts? */);
 }
 
 void factor_vm::primitive_full_gc()
 {
 	gc(collect_full_op,
 		0, /* requested size */
-		true, /* trace contexts? */
-		true /* compact code heap? */);
+		true /* trace contexts? */);
 }
 
 void factor_vm::primitive_compact_gc()
 {
-	gc(collect_full_op,
+	gc(collect_compact_op,
 		0, /* requested size */
-		true, /* trace contexts? */
-		true /* compact code heap? */);
+		true /* trace contexts? */);
 }
 
 void factor_vm::add_gc_stats(generation_statistics *stats, growable_array *result)
@@ -251,8 +253,7 @@ object *factor_vm::allot_object(header header, cell size)
 			{
 				gc(collect_growing_heap_op,
 					size, /* requested size */
-					true, /* trace contexts? */
-					false /* compact code heap? */);
+					true /* trace contexts? */);
 			}
 		}
 
diff --git a/vm/gc.hpp b/vm/gc.hpp
index 18b926ed8c..a4162ed620 100755
--- a/vm/gc.hpp
+++ b/vm/gc.hpp
@@ -6,6 +6,7 @@ enum gc_op {
 	collect_aging_op,
 	collect_to_tenured_op,
 	collect_full_op,
+	collect_compact_op,
 	collect_growing_heap_op
 };
 
diff --git a/vm/image.cpp b/vm/image.cpp
index 2e4433d3b5..c35c0a32b8 100755
--- a/vm/image.cpp
+++ b/vm/image.cpp
@@ -327,10 +327,9 @@ void factor_vm::primitive_save_image_and_exit()
 	for(cell i = 0; i < special_object_count; i++)
 		if(!save_env_p(i)) special_objects[i] = false_object;
 
-	gc(collect_full_op,
+	gc(collect_compact_op,
 		0, /* requested size */
-		false, /* discard objects only reachable from stacks */
-		true /* compact the code heap */);
+		false /* discard objects only reachable from stacks */);
 
 	/* Save the image */
 	if(save_image((vm_char *)(path.untagged() + 1)))
diff --git a/vm/vm.hpp b/vm/vm.hpp
index f0f37619d2..0124affefa 100755
--- a/vm/vm.hpp
+++ b/vm/vm.hpp
@@ -247,13 +247,12 @@ struct factor_vm
 	void collect_nursery();
 	void collect_aging();
 	void collect_to_tenured();
-	void collect_full_mark(bool trace_contexts_p);
-	void collect_full_sweep();
-	void collect_full_compact(bool trace_contexts_p);
-	void collect_growing_heap(cell requested_bytes, bool trace_contexts_p, bool compact_p);
-	void collect_full(bool trace_contexts_p, bool compact_p);
+	void collect_mark_impl(bool trace_contexts_p);
+	void collect_sweep_impl();
+	void collect_compact_impl(bool trace_contexts_p);
+	void collect_growing_heap(cell requested_bytes, bool trace_contexts_p);
 	void record_gc_stats(generation_statistics *stats);
-	void gc(gc_op op, cell requested_bytes, bool trace_contexts_p, bool compact_p);
+	void gc(gc_op op, cell requested_bytes, bool trace_contexts_p);
 	void primitive_minor_gc();
 	void primitive_full_gc();
 	void primitive_compact_gc();