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From: Martin Jambor <jamborm@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-9096] ipa: Release body more carefully when removing nodes (PR 107944) Date: Wed, 1 Feb 2023 17:58:55 +0000 (GMT) [thread overview] Message-ID: <20230201175855.49D12385842B@sourceware.org> (raw) 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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