From: Martin Jambor <mjambor@suse.cz>
Date: Wed, 1 Feb 2023 17:58:09 +0000 (+0100)
Subject: ipa: Release body more carefully when removing nodes (PR 107944)
X-Git-Tag: release-12.2.mpacbti-rel1~98
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8495d80f44488b2566afc84b3f5704dd7c999e21;p=thirdparty%2Fgcc.git

ipa: Release body more carefully when removing nodes (PR 107944)

The code removing function bodies when the last call graph clone of a
node is removed is too aggressive when there are nodes up the
clone_of chain which still need them.  Fixed by expanding the check.

gcc/ChangeLog:

2023-01-18  Martin Jambor  <mjambor@suse.cz>

	PR ipa/107944
	* cgraph.cc (cgraph_node::remove): Check whether nodes up the
	lcone_of chain also do not need the body.

(cherry picked from commit db959e250077ae6b4fc08f53fb322719582c5de6)
---

diff --git a/gcc/cgraph.cc b/gcc/cgraph.cc
index 4bb9e7ba6af9..3734c85db637 100644
--- a/gcc/cgraph.cc
+++ b/gcc/cgraph.cc
@@ -1895,8 +1895,18 @@ cgraph_node::remove (void)
   else if (clone_of)
     {
       clone_of->clones = next_sibling_clone;
-      if (!clone_of->analyzed && !clone_of->clones && !clones)
-	clone_of->release_body ();
+      if (!clones)
+	{
+	  bool need_body = false;
+	  for (cgraph_node *n = clone_of; n; n = n->clone_of)
+	    if (n->analyzed || n->clones)
+	      {
+		need_body = true;
+		break;
+	      }
+	  if (!need_body)
+	    clone_of->release_body ();
+	}
     }
   if (next_sibling_clone)
     next_sibling_clone->prev_sibling_clone = prev_sibling_clone;