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* [gcc r12-9096] ipa: Release body more carefully when removing nodes (PR 107944)
@ 2023-02-01 17:58 Martin Jambor
0 siblings, 0 replies; only message in thread
From: Martin Jambor @ 2023-02-01 17:58 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:8495d80f44488b2566afc84b3f5704dd7c999e21
commit r12-9096-g8495d80f44488b2566afc84b3f5704dd7c999e21
Author: Martin Jambor <mjambor@suse.cz>
Date: Wed Feb 1 18:58:09 2023 +0100
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:
---
gcc/cgraph.cc | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/gcc/cgraph.cc b/gcc/cgraph.cc
index 4bb9e7ba6af..3734c85db63 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;
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