re PR bootstrap/62300 (internal compiler error: in as_a, at is-a.h:192)

	PR bootstrap/62300
	* function.c (assign_parm_setup_reg): Remove erroneous checked
	cast to rtx_insn * on result of gen_extend_insn in favor of
	introducing a new local rtx "pat".

From-SVN: r214714

gcc/ChangeLog

+2014-08-29  David Malcolm  <dmalcolm@redhat.com>
+
+	PR bootstrap/62300
+	* function.c (assign_parm_setup_reg): Remove erroneous checked
+	cast to rtx_insn * on result of gen_extend_insn in favor of
+	introducing a new local rtx "pat".
+
 2014-08-29  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
 
 	* config/mep/mep-pragma.c (mep_pragma_coprocessor_subclass): Rework

gcc/function.c

@@ -3039,10 +3039,9 @@ assign_parm_setup_reg (struct assign_parm_data_all *all, tree parm,
 	    }
 	  else
 	    t = op1;
-	  insn = as_a <rtx_insn *> (
-		   gen_extend_insn (op0, t, promoted_nominal_mode,
-				    data->passed_mode, unsignedp));
-	  emit_insn (insn);
+	  rtx pat = gen_extend_insn (op0, t, promoted_nominal_mode,
+				     data->passed_mode, unsignedp);
+	  emit_insn (pat);
 	  insns = get_insns ();
 
 	  moved = true;