Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog	(revision 214708)
+++ gcc/ChangeLog	(working copy)
@@ -1,5 +1,12 @@
 2014-08-28  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".
+
+2014-08-28  David Malcolm  <dmalcolm@redhat.com>
+
 	* rtl.h (previous_insn): Strengthen param from rtx to rtx_insn *.
 	(next_insn): Likewise.
 	* emit-rtl.c (next_insn): Likewise.
Index: gcc/function.c
===================================================================
--- gcc/function.c	(revision 214704)
+++ gcc/function.c	(working copy)
@@ -3039,10 +3039,9 @@
 	    }
 	  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;