Hello.
Following IPA ICF patch restricts thunk creation for static-chain thunks.
Patch can bootstrap on x86_64-linux-pc and no new regression has been seen.
Ready for thunk?
Thanks,
Martin
>From b247009735cd294b3fd8b727905cb47b5cdaeb51 Mon Sep 17 00:00:00 2001
From: mliska <mli...@suse.cz>
Date: Mon, 22 Dec 2014 10:46:41 +0100
Subject: [PATCH] IPA ICF: Fix for PR ipa/63851 and ipa/63852.
gcc/ChangeLog:
2014-12-22 Martin Liska <mli...@suse.cz>
PR ipa/63851
PR ipa/63852
* ipa-icf.c (sem_function::merge): Ignore merge operation
for a thunk created from static chain.
---
gcc/ipa-icf.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/gcc/ipa-icf.c b/gcc/ipa-icf.c
index 6cdc21b..b8ef6e0 100644
--- a/gcc/ipa-icf.c
+++ b/gcc/ipa-icf.c
@@ -694,6 +694,14 @@ sem_function::merge (sem_item *alias_item)
return 0;
}
+ if (DECL_STATIC_CHAIN (alias->decl))
+ {
+ if (dump_file)
+ fprintf (dump_file, "Thunk creation is risky for static-chain functions.\n\n");
+
+ return 0;
+ }
+
alias->icf_merged = true;
ipa_merge_profiles (local_original, alias);
alias->create_wrapper (local_original);
--
2.1.2
