dwarf2asm.c (dw2_force_const_mem): Add new parameter 'public'.

	* dwarf2asm.c (dw2_force_const_mem): Add new parameter 'public'.
	On USE_LINKONCE_INDIRECT platforms, build a DECL_ONE_ONLY indirect
	reference only if 'public' is true.
	(dw2_output_indirect_constant_1): On USE_LINKONCE_INDIRECT platforms,
	emit the .hidden directive only if the indirect reference is public.
	(dw2_asm_output_encoded_addr_rtx): Add new parameter 'public'.
	Pass it to dw2_force_const_mem.
	* dwarf2asm.h (dw2_asm_output_encoded_addr_rtx): New param 'public'.
	* dwarf2out.c (output_cfi): Adjust calls to above function.
	(output_call_frame_info): Likewise.
	* except.c (output_ttype): Pass TREE_PUBLIC of the type_info object
	as 'public' argument to dw2_asm_output_encoded_addr_rtx.

From-SVN: r106445

gcc/ChangeLog

+2005-11-03  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* dwarf2asm.c (dw2_force_const_mem): Add new parameter 'public'.
+	On USE_LINKONCE_INDIRECT platforms, build a DECL_ONE_ONLY indirect
+	reference only if 'public' is true.
+	(dw2_output_indirect_constant_1): On USE_LINKONCE_INDIRECT platforms,
+	emit the .hidden directive only if the indirect reference is public.
+	(dw2_asm_output_encoded_addr_rtx): Add new parameter 'public'.
+	Pass it to dw2_force_const_mem.
+	* dwarf2asm.h (dw2_asm_output_encoded_addr_rtx): New param 'public'.
+	* dwarf2out.c (output_cfi): Adjust calls to above function.
+	(output_call_frame_info): Likewise.
+	* except.c (output_ttype): Pass TREE_PUBLIC of the type_info object
+	as 'public' argument to dw2_asm_output_encoded_addr_rtx.
+
 2005-11-03  Zdenek Dvorak  <dvorakz@suse.cz>
 
 	PR tree-optimization/24483

gcc/dwarf2asm.c

@@ -683,7 +683,7 @@ dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED,
 }
 #endif /* 0 */
 
-static rtx dw2_force_const_mem (rtx);
+static rtx dw2_force_const_mem (rtx, bool);
 static int dw2_output_indirect_constant_1 (splay_tree_node, void *);
 
 static GTY((param1_is (char *), param2_is (tree))) splay_tree indirect_pool;
@@ -699,10 +699,11 @@ static GTY(()) int dw2_const_labelno;
 /* Put X, a SYMBOL_REF, in memory.  Return a SYMBOL_REF to the allocated
    memory.  Differs from force_const_mem in that a single pool is used for
    the entire unit of translation, and the memory is not guaranteed to be
-   "near" the function in any interesting sense.  */
+   "near" the function in any interesting sense.  PUBLIC controls whether
+   the symbol can be shared across the entire application (or DSO).  */
 
 static rtx
-dw2_force_const_mem (rtx x)
+dw2_force_const_mem (rtx x, bool public)
 {
   splay_tree_node node;
   const char *str;
@@ -721,7 +722,7 @@ dw2_force_const_mem (rtx x)
     {
       tree id;
 
-      if (USE_LINKONCE_INDIRECT)
+      if (public && USE_LINKONCE_INDIRECT)
 	{
 	  char *ref_name = alloca (strlen (str) + sizeof "DW.ref.");
 
@@ -768,12 +769,14 @@ dw2_output_indirect_constant_1 (splay_tree_node node,
 {
   const char *sym;
   rtx sym_ref;
+  tree decl;
 
   sym = (const char *) node->key;
+  decl = (tree) node->value;
   sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym);
-  if (USE_LINKONCE_INDIRECT)
+  if (TREE_PUBLIC (decl) && USE_LINKONCE_INDIRECT)
     fprintf (asm_out_file, "\t.hidden %sDW.ref.%s\n", user_label_prefix, sym);
-  assemble_variable ((tree) node->value, 1, 1, 1);
+  assemble_variable (decl, 1, 1, 1);
   assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
 
   return 0;
@@ -788,10 +791,12 @@ dw2_output_indirect_constants (void)
     splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL);
 }
 
-/* Like dw2_asm_output_addr_rtx, but encode the pointer as directed.  */
+/* Like dw2_asm_output_addr_rtx, but encode the pointer as directed.
+   If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect
+   reference is shared across the entire application (or DSO).  */
 
 void
-dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr,
+dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool public,
 				 const char *comment, ...)
 {
   int size;
@@ -830,9 +835,9 @@ dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr,
 	  /* It is very tempting to use force_const_mem so that we share data
 	     with the normal constant pool.  However, we've already emitted
 	     the constant pool for this function.  Moreover, we'd like to
-	     share these constants across the entire unit of translation,
-	     or better, across the entire application (or DSO).  */
-	  addr = dw2_force_const_mem (addr);
+	     share these constants across the entire unit of translation and
+	     even, if possible, across the entire application (or DSO).  */
+	  addr = dw2_force_const_mem (addr, public);
 	  encoding &= ~DW_EH_PE_indirect;
 	  goto restart;
 	}

gcc/dwarf2asm.h

@@ -38,9 +38,9 @@ extern void dw2_asm_output_addr (int, const char *, const char *, ...)
 extern void dw2_asm_output_addr_rtx (int, rtx, const char *, ...)
      ATTRIBUTE_NULL_PRINTF_3;
 
-extern void dw2_asm_output_encoded_addr_rtx (int, rtx,
+extern void dw2_asm_output_encoded_addr_rtx (int, rtx, bool,
 					     const char *, ...)
-     ATTRIBUTE_NULL_PRINTF_3;
+     ATTRIBUTE_NULL_PRINTF_4;
 
 extern void dw2_asm_output_nstring (const char *, size_t,
 				    const char *, ...)

gcc/dwarf2out.c

@@ -2005,7 +2005,7 @@ output_cfi (dw_cfi_ref cfi, dw_fde_ref fde, int for_eh)
 	    dw2_asm_output_encoded_addr_rtx (
 		ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0),
 		gen_rtx_SYMBOL_REF (Pmode, cfi->dw_cfi_oprnd1.dw_cfi_addr),
-		NULL);
+		false, NULL);
 	  else
 	    dw2_asm_output_addr (DWARF2_ADDR_SIZE,
 				 cfi->dw_cfi_oprnd1.dw_cfi_addr, NULL);
@@ -2261,7 +2261,8 @@ output_call_frame_info (int for_eh)
 	  dw2_asm_output_data (1, per_encoding, "Personality (%s)",
 			       eh_data_format_name (per_encoding));
 	  dw2_asm_output_encoded_addr_rtx (per_encoding,
-					   eh_personality_libfunc, NULL);
+					   eh_personality_libfunc,
+					   true, NULL);
 	}
 
       if (any_lsda_needed)
@@ -2313,6 +2314,7 @@ output_call_frame_info (int for_eh)
 	  SYMBOL_REF_FLAGS (sym_ref) |= SYMBOL_FLAG_LOCAL;
 	  dw2_asm_output_encoded_addr_rtx (fde_encoding,
 					   sym_ref,
+					   false,
 					   "FDE initial location");
 	  if (fde->dw_fde_switched_sections)
 	    {
@@ -2322,13 +2324,13 @@ output_call_frame_info (int for_eh)
 				      fde->dw_fde_hot_section_label);
 	      SYMBOL_REF_FLAGS (sym_ref2) |= SYMBOL_FLAG_LOCAL;
 	      SYMBOL_REF_FLAGS (sym_ref3) |= SYMBOL_FLAG_LOCAL;
-	      dw2_asm_output_encoded_addr_rtx (fde_encoding, sym_ref3,
+	      dw2_asm_output_encoded_addr_rtx (fde_encoding, sym_ref3, false,
 					       "FDE initial location");
 	      dw2_asm_output_delta (size_of_encoded_value (fde_encoding),
 				    fde->dw_fde_hot_section_end_label,
 				    fde->dw_fde_hot_section_label,
 				    "FDE address range");
-	      dw2_asm_output_encoded_addr_rtx (fde_encoding, sym_ref2,
+	      dw2_asm_output_encoded_addr_rtx (fde_encoding, sym_ref2, false,
 					       "FDE initial location");
 	      dw2_asm_output_delta (size_of_encoded_value (fde_encoding),
 				    fde->dw_fde_unlikely_section_end_label,
@@ -2393,7 +2395,7 @@ output_call_frame_info (int for_eh)
 					       fde->funcdef_number);
 		  dw2_asm_output_encoded_addr_rtx (
 			lsda_encoding, gen_rtx_SYMBOL_REF (Pmode, l1),
-			"Language Specific Data Area");
+			false, "Language Specific Data Area");
 		}
 	      else
 		{

gcc/except.c

@@ -3463,6 +3463,7 @@ static void
 output_ttype (tree type, int tt_format, int tt_format_size)
 {
   rtx value;
+  bool public = true;
 
   if (type == NULL_TREE)
     value = const0_rtx;
@@ -3485,6 +3486,7 @@ output_ttype (tree type, int tt_format, int tt_format_size)
 	      node = cgraph_varpool_node (type);
 	      if (node)
 		cgraph_varpool_mark_needed_node (node);
+	      public = TREE_PUBLIC (type);
 	    }
 	}
       else if (TREE_CODE (type) != INTEGER_CST)
@@ -3499,7 +3501,7 @@ output_ttype (tree type, int tt_format, int tt_format_size)
     assemble_integer (value, tt_format_size,
 		      tt_format_size * BITS_PER_UNIT, 1);
   else
-    dw2_asm_output_encoded_addr_rtx (tt_format, value, NULL);
+    dw2_asm_output_encoded_addr_rtx (tt_format, value, public, NULL);
 }
 
 void