From: Jan Hubicka <hubicka@ucw.cz>
Date: Sun, 8 Jun 2014 16:53:25 +0000 (+0200)
Subject: varasm.c (use_blocks_for_decl_p): Check symbol table instead of alias attribute.
X-Git-Tag: releases/gcc-5.1.0~7017
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=684a3aa7ab4ab91bbd691fd471cbd24184f3dbd3;p=thirdparty%2Fgcc.git

varasm.c (use_blocks_for_decl_p): Check symbol table instead of alias attribute.

	* varasm.c (use_blocks_for_decl_p): Check symbol table instead of alias
	attribute.
	(place_block_symbol): Recurse on aliases.

From-SVN: r211357
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c7767ed87c67..5e5a3c60fc7d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-06-07  Jan Hubicka  <hubicka@ucw.cz>
+
+	* varasm.c (use_blocks_for_decl_p): Check symbol table instead of alias
+	attribute.
+	(place_block_symbol): Recurse on aliases.
+
 2014-06-07  Jan Hubicka  <hubicka@ucw.cz>
 
 	* ipa-visibility.c: Include varasm.h
diff --git a/gcc/varasm.c b/gcc/varasm.c
index 375838ad9f5b..eabc06ff5f72 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -1184,6 +1184,8 @@ change_symbol_block (rtx symbol, struct object_block *block)
 static bool
 use_blocks_for_decl_p (tree decl)
 {
+  struct symtab_node *snode;
+
   /* Only data DECLs can be placed into object blocks.  */
   if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != CONST_DECL)
     return false;
@@ -1197,7 +1199,9 @@ use_blocks_for_decl_p (tree decl)
 
   /* If this decl is an alias, then we don't want to emit a
      definition.  */
-  if (lookup_attribute ("alias", DECL_ATTRIBUTES (decl)))
+  if (TREE_CODE (decl) == VAR_DECL
+      && (snode = symtab_get_node (decl)) != NULL
+      && snode->alias)
     return false;
 
   return targetm.use_blocks_for_decl_p (decl);
@@ -7028,6 +7032,8 @@ place_block_symbol (rtx symbol)
       if (snode->alias)
 	{
 	  rtx target = DECL_RTL (symtab_alias_ultimate_target (snode)->decl);
+
+	  place_block_symbol (target);
 	  SYMBOL_REF_BLOCK_OFFSET (symbol) = SYMBOL_REF_BLOCK_OFFSET (target);
 	  return;
 	}