diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3f821e92151..ac5dc7c9c72 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+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
diff --git a/gcc/function.c b/gcc/function.c
index dc9c06b3166..464c6cdaa57 100644
--- a/gcc/function.c
+++ b/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;