Hi,
this patch fixes ICE where we produce RTL because of notice_global_symbol
but this RTL is no longer valid after turning symbol into an alias.
Bootstrapped/regtested x86_64-linux, will commit it shortly.
Honza
PR ipa/65232
* ipa-icf.c (clear_decl_rtl): New function.
(sem_function::merge): Clear RTL before forming alias.
(sem_variable::merge): Clear RTL before forming alias.
Index: ipa-icf.c
===================================================================
--- ipa-icf.c (revision 221076)
+++ ipa-icf.c (working copy)
@@ -632,7 +632,7 @@ set_local (cgraph_node *node, void *data
return false;
}
-/* TREE_ADDRESSABLE of NODE to true if DATA is non-NULL.
+/* TREE_ADDRESSABLE of NODE to true.
Helper for call_for_symbol_thunks_and_aliases. */
static bool
@@ -642,6 +642,16 @@ set_addressable (varpool_node *node, voi
return false;
}
+/* Clear DECL_RTL of NODE.
+ Helper for call_for_symbol_thunks_and_aliases. */
+
+static bool
+clear_decl_rtl (symtab_node *node, void *)
+{
+ SET_DECL_RTL (node->decl, NULL);
+ return false;
+}
+
/* Redirect all callers of N and its aliases to TO. Remove aliases if
possible. Return number of redirections made. */
@@ -893,6 +908,9 @@ sem_function::merge (sem_item *alias_ite
ipa_merge_profiles (original, alias);
alias->release_body (true);
alias->reset ();
+ /* Notice global symbol possibly produced RTL. */
+ ((symtab_node *)alias)->call_for_symbol_and_aliases (clear_decl_rtl,
+ NULL, true);
/* Create the alias. */
cgraph_node::create_alias (alias_func->decl, decl);
@@ -1512,6 +1543,8 @@ sem_variable::merge (sem_item *alias_ite
alias->analyzed = false;
DECL_INITIAL (alias->decl) = NULL;
+ ((symtab_node *)alias)->call_for_symbol_and_aliases (clear_decl_rtl,
+ NULL, true);
alias->need_bounds_init = false;
alias->remove_all_references ();
if (TREE_ADDRESSABLE (alias->decl))
