re PR debug/24908 (ICE in dwarf2out for cpu2000 with -funroll-loops -fno-tree-copyrename)

	PR debug/24908
	* dwarf2out.c (dwarf2out_frame_debug_expr): Don't assert that
	call_used_regs can't be used to save reg in another reg.

From-SVN: r108257

gcc/ChangeLog

+2005-12-09  Alan Modra  <amodra@bigpond.net.au>
+
+	PR debug/24908
+	* dwarf2out.c (dwarf2out_frame_debug_expr): Don't assert that
+	call_used_regs can't be used to save reg in another reg.
+
 2005-12-08  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
             Christophe Jaillet  <christophe.jaillet@wanadoo.fr>
 

gcc/dwarf2out.c

@@ -1568,10 +1568,9 @@ dwarf2out_frame_debug_expr (rtx expr, const char *label)
 	  else
 	    {
 	      /* Saving a register in a register.  */
-	      gcc_assert (call_used_regs [REGNO (dest)]
-			  && (!fixed_regs [REGNO (dest)]
+	      gcc_assert (!fixed_regs [REGNO (dest)]
 			  /* For the SPARC and its register window.  */
-			      || DWARF_FRAME_REGNUM (REGNO (src))
+			  || (DWARF_FRAME_REGNUM (REGNO (src))
 			      == DWARF_FRAME_RETURN_COLUMN));
 	      queue_reg_save (label, src, dest, 0);
 	    }