remove cast from emit_libcall_block

gcc/ChangeLog:

2016-11-21  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* optabs.c (emit_libcall_block): Change argument type to
	rtx_insn *.
	* optabs.h: Adjust prototype.

From-SVN: r242654

gcc/ChangeLog

 2016-11-21  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* optabs.c (emit_libcall_block): Change argument type to
+	rtx_insn *.
+	* optabs.h: Adjust prototype.
+
+2016-11-21  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
 	* cfgrtl.c (delete_insn): Change argument type to rtx_insn *.
 	(fixup_reorder_chain): Adjust.
 	* cfgrtl.h: Adjust prototype.

gcc/optabs.c

@@ -3681,10 +3681,9 @@ emit_libcall_block_1 (rtx_insn *insns, rtx target, rtx result, rtx equiv,
 }
 
 void
-emit_libcall_block (rtx insns, rtx target, rtx result, rtx equiv)
+emit_libcall_block (rtx_insn *insns, rtx target, rtx result, rtx equiv)
 {
-  emit_libcall_block_1 (safe_as_a <rtx_insn *> (insns),
-			target, result, equiv, false);
+  emit_libcall_block_1 (insns, target, result, equiv, false);
 }
 
 /* Nonzero if we can perform a comparison of mode MODE straightforwardly.

gcc/optabs.h

@@ -224,7 +224,7 @@ extern bool maybe_emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 extern void emit_unop_insn (enum insn_code, rtx, rtx, enum rtx_code);
 
 /* Emit code to make a call to a constant function or a library call.  */
-extern void emit_libcall_block (rtx, rtx, rtx, rtx);
+extern void emit_libcall_block (rtx_insn *, rtx, rtx, rtx);
 
 /* The various uses that a comparison can have; used by can_compare_p:
    jumps, conditional moves, store flag operations.  */