2009-04-01 Rafael Avila de Espindola <espindola@google.com>

[pf3gnuchains/gcc-fork.git] / gcc / varasm.c

diff --git a/gcc/varasm.c b/gcc/varasm.c
index 7d6b86f..16d8782 100644 (file)
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -1,6 +1,6 @@
 /* Output variables, constants and external declarations, for GNU compiler.
    Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
-   1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -449,7 +449,7 @@ emutls_common_1 (void **loc, void *xstmts)
 void
 emutls_finish (void)
 {
-  if (!targetm.emutls.register_common)
+  if (targetm.emutls.register_common)
     {
       tree body = NULL_TREE;
 
@@ -869,11 +869,18 @@ default_function_rodata_section (tree decl)
 
       if (DECL_ONE_ONLY (decl) && HAVE_COMDAT_GROUP)
         {
-         size_t len = strlen (name) + 3;
-         char* rname = (char *) alloca (len);
+         const char *dot;
+         size_t len;
+         char* rname;
+
+         dot = strchr (name + 1, '.');
+         if (!dot)
+           dot = name;
+         len = strlen (dot) + 8;
+         rname = (char *) alloca (len);
 
          strcpy (rname, ".rodata");
-         strcat (rname, name + 5);
+         strcat (rname, dot);
          return get_section (rname, SECTION_LINKONCE, decl);
        }
       /* For .gnu.linkonce.t.foo we want to use .gnu.linkonce.r.foo.  */
@@ -1677,7 +1684,7 @@ assemble_start_function (tree decl, const char *fnname)
       /* When the function starts with a cold section, we need to explicitly
         align the hot section and write out the hot section label.
         But if the current function is a thunk, we do not have a CFG.  */
-      if (!crtl->is_thunk
+      if (!cfun->is_thunk
          && BB_PARTITION (ENTRY_BLOCK_PTR->next_bb) == BB_COLD_PARTITION)
        {
          switch_to_section (text_section);
@@ -2161,7 +2168,6 @@ assemble_variable (tree decl, int top_level ATTRIBUTE_UNUSED,
   /* First make the assembler name(s) global if appropriate.  */
   sect = get_variable_section (decl, false);
   if (TREE_PUBLIC (decl)
-      && DECL_NAME (decl)
       && (sect->common.flags & SECTION_COMMON) == 0)
     globalize_decl (decl);
 
@@ -2316,12 +2322,14 @@ assemble_external (tree decl ATTRIBUTE_UNUSED)
         locally emitted, inlined or otherwise not-really-extern, but
         for declarations that can be weak, it happens to be
         match.  */
-      && !TREE_STATIC (decl))
-    weak_decls = tree_cons (NULL, decl, weak_decls);
+      && !TREE_STATIC (decl)
+      && tree_find_value (weak_decls, decl) == NULL_TREE)
+      weak_decls = tree_cons (NULL, decl, weak_decls);
 
 #ifdef ASM_OUTPUT_EXTERNAL
-  pending_assemble_externals = tree_cons (0, decl,
-                                         pending_assemble_externals);
+  if (tree_find_value (pending_assemble_externals, decl) == NULL_TREE)
+    pending_assemble_externals = tree_cons (NULL, decl,
+                                           pending_assemble_externals);
 #endif
 }
 
@@ -4071,8 +4079,8 @@ constructor_static_from_elts_p (const_tree ctor)
          && !VEC_empty (constructor_elt, CONSTRUCTOR_ELTS (ctor)));
 }
 
-/* A subroutine of initializer_constant_valid_p.  VALUE is either a
-   MINUS_EXPR or a POINTER_PLUS_EXPR.  This looks for cases of VALUE
+/* A subroutine of initializer_constant_valid_p.  VALUE is a MINUS_EXPR,
+   PLUS_EXPR or POINTER_PLUS_EXPR.  This looks for cases of VALUE
    which are valid when ENDTYPE is an integer of any size; in
    particular, this does not accept a pointer minus a constant.  This
    returns null_pointer_node if the VALUE is an absolute constant
@@ -4125,7 +4133,9 @@ narrowing_initializer_constant_valid_p (tree value, tree endtype)
   /* Both initializers must be known.  */
   if (op0 && op1)
     {
-      if (op0 == op1)
+      if (op0 == op1
+         && (op0 == null_pointer_node
+             || TREE_CODE (value) == MINUS_EXPR))
        return null_pointer_node;
 
       /* Support differences between labels.  */
@@ -4316,12 +4326,10 @@ initializer_constant_valid_p (tree value, tree endtype)
        }
 
       /* Support narrowing pointer differences.  */
-      if (TREE_CODE (value) == POINTER_PLUS_EXPR)
-       {
-         ret = narrowing_initializer_constant_valid_p (value, endtype);
-         if (ret != NULL_TREE)
-           return ret;
-       }
+      ret = narrowing_initializer_constant_valid_p (value, endtype);
+      if (ret != NULL_TREE)
+       return ret;
+
       break;
 
     case MINUS_EXPR: