Use rtx_expr_list for expr_status.x_forced_labels

gcc/
2014-08-27  David Malcolm  <dmalcolm@redhat.com>

	* function.h (struct expr_status): Strengthen field
	"x_forced_labels" from rtx to rtx_expr_list *.

	* cfgbuild.c (make_edges): Split local "x" into two locals,
	strengthening one from rtx to rtx_expr_list *, and using methods
	of said class.
	* dwarf2cfi.c (create_trace_edges): Split local "lab" out; within
	loop over forced_labels, introduce strengthen it from rtx to
	rtx_expr_list *, using methods to clarify the code.
	* jump.c (rebuild_jump_labels_1): Strengthen local "insn" from rtx
	to rtx_expr_list *, using methods of said class to clarify the
	code.
	* reload1.c (set_initial_label_offsets): Split local "x" into two
	per-loop variables, strengthening the first from rtx to
	rtx_expr_list * and using methods.

From-SVN: r214602

1 files changed, 4 insertions, 4 deletions

diff --git a/gcc/jump.c b/gcc/jump.c
index a28300c..b8d3d52 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -74,7 +74,7 @@ static int returnjump_p_1 (rtx *, void *);
 static void
 rebuild_jump_labels_1 (rtx_insn *f, bool count_forced)
 {
-  rtx insn;
+  rtx_expr_list *insn;
 
   timevar_push (TV_REBUILD_JUMP);
   init_label_info (f);
@@ -85,9 +85,9 @@ rebuild_jump_labels_1 (rtx_insn *f, bool count_forced)
      count doesn't drop to zero.  */
 
   if (count_forced)
-    for (insn = forced_labels; insn; insn = XEXP (insn, 1))
-      if (LABEL_P (XEXP (insn, 0)))
-	LABEL_NUSES (XEXP (insn, 0))++;
+    for (insn = forced_labels; insn; insn = insn->next ())
+      if (LABEL_P (insn->element ()))
+	LABEL_NUSES (insn->element ())++;
   timevar_pop (TV_REBUILD_JUMP);
 }