re PR debug/65771 (ICE (in loc_list_from_tree, at dwarf2out.c:14964) on arm-linux-gnueabihf)

	PR debug/65771
	* dwarf2out.c (mem_loc_descriptor): For CONST, fallback to
	trying mem_loc_descriptor on XEXP (rtl, 0).

From-SVN: r222181

gcc/ChangeLog

+2015-04-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/65771
+	* dwarf2out.c (mem_loc_descriptor): For CONST, fallback to
+	trying mem_loc_descriptor on XEXP (rtl, 0).
+
 2015-04-17  Martin Liska  <mliska@suse.cz>
 
 	* ipa-icf.c (sem_item_optimizer::subdivide_classes_by_sensitive_refs):

gcc/dwarf2out.c

@@ -12799,7 +12799,12 @@ mem_loc_descriptor (rtx rtl, machine_mode mode,
 	}
 
       if (!const_ok_for_output (rtl))
-	break;
+	{
+	  if (GET_CODE (rtl) == CONST)
+	    mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode, mem_mode,
+						 initialized);
+	  break;
+	}
 
     symref:
       mem_loc_result = new_addr_loc_descr (rtl, dtprel_false);