dwarf2out.c (size_of_locs): Don't fill dw_loc_addr if there are no branches.

	* dwarf2out.c (size_of_locs): Don't fill dw_loc_addr if there
	are no branches.

From-SVN: r113267

gcc/ChangeLog

@@ -20,6 +20,9 @@
 
 2006-04-25  Geoffrey Keating  <geoffk@apple.com>
 
+	* dwarf2out.c (size_of_locs): Don't fill dw_loc_addr if there
+	are no branches.
+
 	* dwarf2asm.c (dw2_asm_output_data): Don't generate RTL just
 	to print an integer.
 

gcc/dwarf2out.c

@@ -3228,12 +3228,24 @@ size_of_loc_descr (dw_loc_descr_ref loc)
 static unsigned long
 size_of_locs (dw_loc_descr_ref loc)
 {
+  dw_loc_descr_ref l;
   unsigned long size;
 
-  for (size = 0; loc != NULL; loc = loc->dw_loc_next)
+  /* If there are no skip or bra opcodes, don't fill in the dw_loc_addr
+     field, to avoid writing to a PCH file.  */
+  for (size = 0, l = loc; l != NULL; l = l->dw_loc_next)
     {
-      loc->dw_loc_addr = size;
-      size += size_of_loc_descr (loc);
+      if (l->dw_loc_opc == DW_OP_skip || l->dw_loc_opc == DW_OP_bra)
+	break;
+      size += size_of_loc_descr (l);
+    }
+  if (! l)
+    return size;
+
+  for (size = 0, l = loc; l != NULL; l = l->dw_loc_next)
+    {
+      l->dw_loc_addr = size;
+      size += size_of_loc_descr (l);
     }
 
   return size;