DWARF2: add extensions to handle fixed point types

include/ChangeLog:

	* dwarf2.def (DW_AT_GNU_numerator, DW_AT_GNU_denominator): New
	attributes.

From-SVN: r226887

include/ChangeLog

+2015-08-14  Pierre-Marie de Rodat  <derodat@adacore.com>
+
+	* dwarf2.def (DW_AT_GNU_numerator, DW_AT_GNU_denominator): New
+	attributes.
+
 2015-08-11  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
 	* ansidecl.h (GCC_FINAL): New macro.

include/dwarf2.def

@@ -404,6 +404,10 @@ DW_AT (DW_AT_VMS_rtnbeg_pd_address, 0x2201)
    See http://gcc.gnu.org/wiki/DW_AT_GNAT_descriptive_type .  */
 DW_AT (DW_AT_use_GNAT_descriptive_type, 0x2301)
 DW_AT (DW_AT_GNAT_descriptive_type, 0x2302)
+/* Rational constant extension.
+   See https://gcc.gnu.org/wiki/DW_AT_GNU_numerator_denominator .  */
+DW_TAG (DW_AT_GNU_numerator, 0x2303)
+DW_TAG (DW_AT_GNU_denominator, 0x2304)
 /* UPC extension.  */
 DW_AT (DW_AT_upc_threads_scaled, 0x3210)
 /* PGI (STMicroelectronics) extensions.  */