* Makefile.in (toplev.o): Depend on loop.h.

	* dwarfout.c: Include tm_p.h.

	* emit-rtl.c (restore_emit_status): Mark parameter with
	ATTRIBUTE_UNUSED.

	* final.c (final_scan_insn): Likewise.

	* flow.c (flow_nodes_print, flow_exits_print, flow_loops_cfg_dump,
	flow_loop_nested_p, flow_loop_exits_find, flow_loop_nodes_find,
	flow_depth_first_order_compute, flow_loop_pre_header_find,
	flow_loop_tree_node_add, flow_loops_tree_build,
	flow_loop_level_compute, flow_loops_level_compute,
	flow_loop_outside_edge_p): Add prototypes.
	(recompute_reg_usage): Mark parameters with ATTRIBUTE_UNUSED.

	* ggc-callbacks.c (lang_mark_tree, lang_mark_false_label_stack):
	Mark with ATTRIBUTE_NORETURN.

	* hash.c (hash_newfunc): Mark parameter with ATTRIBUTE_UNUSED.

	* local-alloc.c (no_conflict_p): Likewise.

	* loop.c (insert_bct): Hide definitions of variables with hidden
	usage.
	(note_reg_stored): Mark parameter with ATTRIBUTE_UNUSED.

	* regclass.c (memory_move_secondary_cost): Mark variable `mem'
	with ATTRIBUTE_UNUSED.
	(record_reg_classes): Mark parameter with ATTRIBUTE_UNUSED.
	(reg_scan): Likewise.

	* reload.c (find_reloads): Remove unused variables `changed'.

	* reload1.c (reload_reg_class_lower): Don't unnecessarily cast
	away const-ness.
	(allocate_reload_reg): Mark parameter with ATTRIBUTE_UNUSED.
	Remove unused variable `insn'.

	* toplev.c: Include loop.h.
	(report_file_and_line): Remove unnecessary prototype.

	* tree.c (build_block): Mark parameter with ATTRIBUTE_UNUSED.

	* unroll.c (biv_total_increment): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@31085 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 5 insertions, 3 deletions

diff --git a/gcc/regclass.c b/gcc/regclass.c
index 1ae876a6d3f..4344c58701e 100644
--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -503,7 +503,9 @@ memory_move_secondary_cost (mode, class, in)
   enum reg_class altclass;
   int partial_cost = 0;
   /* We need a memory reference to feed to SECONDARY... macros.  */
-  rtx mem = top_of_stack[(int) mode];
+  /* mem may be unused even if the SECONDARY_ macros are defined. */
+  rtx mem ATTRIBUTE_UNUSED = top_of_stack[(int) mode];
+
 
   if (in)
     {
@@ -1204,7 +1206,7 @@ record_reg_classes (n_alts, n_ops, ops, modes, subreg_changes_size,
      int n_ops;
      rtx *ops;
      enum machine_mode *modes;
-     char *subreg_changes_size;
+     char *subreg_changes_size ATTRIBUTE_UNUSED;
      const char **constraints;
      rtx insn;
 {
@@ -2101,7 +2103,7 @@ void
 reg_scan (f, nregs, repeat)
      rtx f;
      int nregs;
-     int repeat;
+     int repeat ATTRIBUTE_UNUSED;
 {
   register rtx insn;