[gcc(refs/users/marxin/heads/PR105600-ipa-icf-removed-nodes)] ipa-icf: skip variables with body_removed

[Martin Liska <marxin@gcc.gnu.org>]

https://gcc.gnu.org/g:0a6c68712d20bfe5bb7e29380a1efa404ae7e314

commit 0a6c68712d20bfe5bb7e29380a1efa404ae7e314
Author: Martin Liska <mliska@suse.cz>
Date:   Wed May 18 15:07:53 2022 +0200

    ipa-icf: skip variables with body_removed
    
    Similarly to cgraph_nodes, it may happen that body_removed is set
    during merging of symbols.
    
            PR ipa/105600
    
    gcc/ChangeLog:
    
            * ipa-icf.cc (sem_item_optimizer::filter_removed_items):
            Skip variables with body_removed.

Diff:
---
 gcc/ipa-icf.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gcc/ipa-icf.cc b/gcc/ipa-icf.cc
index 765ae746745..6528a7a10b2 100644
--- a/gcc/ipa-icf.cc
+++ b/gcc/ipa-icf.cc
@@ -2411,10 +2411,11 @@ sem_item_optimizer::filter_removed_items (void)
 	    {
 	      /* Filter out non-readonly variables.  */
 	      tree decl = item->decl;
-	      if (TREE_READONLY (decl))
-		filtered.safe_push (item);
-	      else
+	      varpool_node *vnode = static_cast <sem_variable *>(item)->get_node ();
+	      if (!TREE_READONLY (decl) || vnode->body_removed)
 		remove_item (item);
+	      else
+		filtered.safe_push (item);
 	    }
         }
     }