re PR target/29693 (ICE while compiling gcc-3.4.3 with gcc-4.1.1)

Fix PR target/29693



2015-06-25  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	PR target/29693
	* config/arm/arm.c (arm_dbx_register_number): Return
	DWARF_FRAME_REGISTERS by default.

From-SVN: r224932

gcc/ChangeLog

+2015-06-25  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
+
+	PR target/29693
+	* config/arm/arm.c (arm_dbx_register_number): Return
+	DWARF_FRAME_REGISTERS by default.
+
 2015-06-25  Tom de Vries  <tom@codesourcery.com>
 
 	* dominance.c (calculate_dominance_info): Fix verify_dominators call

gcc/config/arm/arm.c

@@ -26389,7 +26389,7 @@ arm_dbx_register_number (unsigned int regno)
   if (IS_IWMMXT_REGNUM (regno))
     return 112 + regno - FIRST_IWMMXT_REGNUM;
 
-  gcc_unreachable ();
+  return DWARF_FRAME_REGISTERS;
 }
 
 /* Dwarf models VFPv3 registers as 32 64-bit registers.