From: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 20 Sep 2014 03:11:04 +0000 (+0000)
Subject: 	* ipa-visibility.c (varpool_node::externally_visible_p): Do not
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78eb5b700d6ef59c9357dfa56547b48fcc4d593a;p=thirdparty%2Fgcc.git

	* ipa-visibility.c (varpool_node::externally_visible_p): Do not
	privatize dynamic TLS variables.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215417 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4c03408368fe..87907fdd6fdf 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-09-19  Jan Hubicka  <hubicka@ucw.cz>
+
+	* ipa-visibility.c (varpool_node::externally_visible_p): Do not
+	privatize dynamic TLS variables.
+
 2014-09-19  Jan Hubicka  <hubicka@ucw.cz>
 
 	* diagnostic.c (warning_n): New function.
diff --git a/gcc/ipa-visibility.c b/gcc/ipa-visibility.c
index 32199af252f0..ea6052f8861f 100644
--- a/gcc/ipa-visibility.c
+++ b/gcc/ipa-visibility.c
@@ -277,6 +277,13 @@ varpool_node::externally_visible_p (void)
   if (used_from_object_file_p ())
     return true;
 
+  /* Bringing TLS variables local may cause dynamic linker failures
+     on limits of static TLS vars.  */
+  if (DECL_THREAD_LOCAL_P (decl)
+      && (DECL_TLS_MODEL (decl) != TLS_MODEL_EMULATED
+	  && DECL_TLS_MODEL (decl) != TLS_MODEL_INITIAL_EXEC))
+    return true;
+
   if (DECL_HARD_REGISTER (decl))
     return true;
   if (DECL_PRESERVE_P (decl))