shorten_branches takes an rtx_insn

gcc/
	* output.h (shorten_branches): Strengthen param from rtx to
	rtx_insn *.

	* final.c (shorten_branches): Likewise, renaming param back from
	"uncast_first" to "first", and dropping the checked cast from rtx
	to rtx_insn *.

	* genattr.c (gen_attr): Likewise when writing out the prototype of
	shorten_branches.

From-SVN: r214478

gcc/ChangeLog

 2014-08-25  David Malcolm  <dmalcolm@redhat.com>
 
+	* output.h (shorten_branches): Strengthen param from rtx to
+	rtx_insn *.
+
+	* final.c (shorten_branches): Likewise, renaming param back from
+	"uncast_first" to "first", and dropping the checked cast from rtx
+	to rtx_insn *.
+
+	* genattr.c (gen_attr): Likewise when writing out the prototype of
+	shorten_branches.
+
+2014-08-25  David Malcolm  <dmalcolm@redhat.com>
+
 	* sched-int.h (struct haifa_sched_info): Strengthen fields
 	"prev_head" and "next_tail" from rtx to rtx_insn *.
 

gcc/final.c

@@ -899,9 +899,8 @@ make_pass_compute_alignments (gcc::context *ctxt)
    slots.  */
 
 void
-shorten_branches (rtx uncast_first)
+shorten_branches (rtx_insn *first)
 {
-  rtx_insn *first = safe_as_a <rtx_insn *> (uncast_first);
   rtx_insn *insn;
   int max_uid;
   int i;

gcc/genattr.c

@@ -65,7 +65,7 @@ gen_attr (rtx attr)
   if (! strcmp (XSTR (attr, 0), "length"))
     {
       puts ("\
-extern void shorten_branches (rtx);\n\
+extern void shorten_branches (rtx_insn *);\n\
 extern int insn_default_length (rtx);\n\
 extern int insn_min_length (rtx);\n\
 extern int insn_variable_length_p (rtx);\n\

gcc/output.h

@@ -50,7 +50,7 @@ extern int get_attr_min_length (rtx);
 
 /* Make a pass over all insns and compute their actual lengths by shortening
    any branches of variable length if possible.  */
-extern void shorten_branches (rtx);
+extern void shorten_branches (rtx_insn *);
 
 /* Output assembler code for the start of a function,
    and initialize some of the variables in this file