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

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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.
This commit is contained in:
Martin Jambor 2023-01-18 15:29:54 +01:00
parent d4abe5c456
commit db959e2500
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GPG key ID: BF63C1BC3FA43540
1 changed files with 12 additions and 2 deletions
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14
gcc/cgraph.cc
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@ -1893,8 +1893,18 @@ 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;