final_start_function takes an rtx_insn

gcc/
	* output.h (final_start_function): Strengthen param 1 from rtx to
	rtx_insn *.

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

From-SVN: r214480

gcc/ChangeLog

 2014-08-25  David Malcolm  <dmalcolm@redhat.com>
 
+	* output.h (final_start_function): Strengthen param 1 from rtx to
+	rtx_insn *.
+
+	* final.c (final_start_function): Likewise, renaming back from
+	"uncast_first" to "first", and dropping the checked cast from rtx
+	to rtx_insn *.
+
+2014-08-25  David Malcolm  <dmalcolm@redhat.com>
+
 	* output.h (final): Strengthen param 1 from rtx to rtx_insn *.
 	* final.c (final): Likewise.  Rename param back from
 	"uncast_first" to "first" and eliminate the checked cast from rtx

gcc/final.c

@@ -1729,10 +1729,9 @@ reemit_insn_block_notes (void)
      test and compare insns.  */
 
 void
-final_start_function (rtx uncast_first, FILE *file,
+final_start_function (rtx_insn *first, FILE *file,
 		      int optimize_p ATTRIBUTE_UNUSED)
 {
-  rtx_insn *first = safe_as_a <rtx_insn *> (uncast_first);
   block_depth = 0;
 
   this_is_asm_operands = 0;

gcc/output.h

@@ -57,7 +57,7 @@ extern void shorten_branches (rtx_insn *);
    for the new function.  The label for the function and associated
    assembler pseudo-ops have already been output in
    `assemble_start_function'.  */
-extern void final_start_function (rtx, FILE *, int);
+extern void final_start_function (rtx_insn *, FILE *, int);
 
 /* Output assembler code for the end of a function.
    For clarity, args are same as those of `final_start_function'