# HG changeset patch
# User rkennke
# Date 1582815154 -3600
#      Thu Feb 27 15:52:34 2020 +0100
# Node ID 43be2b99514dc0a266c6726eac7f8d1bee8fd295
# Parent  31c206a5364b67916c838f2ace4226f1f6ef5f7e
[backport] 8226586: Shenandoah: No need to pre-evacuate roots for degenerated GC
Reviewed-by: rkennke

diff -r 31c206a5364b -r 43be2b99514d src/share/vm/gc_implementation/shenandoah/shenandoahHeap.cpp
--- a/src/share/vm/gc_implementation/shenandoah/shenandoahHeap.cpp	Mon Jun 03 21:28:45 2019 +0200
+++ b/src/share/vm/gc_implementation/shenandoah/shenandoahHeap.cpp	Thu Feb 27 15:52:34 2020 +0100
@@ -1513,8 +1513,10 @@
       // From here on, we need to update references.
       set_has_forwarded_objects(true);
 
-      evacuate_and_update_roots();
-
+      if (!is_degenerated_gc_in_progress()) {
+        evacuate_and_update_roots();
+      }
+ 
       if (ShenandoahPacing) {
         pacer()->setup_for_evac();
       }