[PATCH] RISC-V: Remove redundant functions

[Juzhe-Zhong]

I just finished V2 version of LMUL cost model.
Turns out we don't these redundant functions.

Remove them.

gcc/ChangeLog:

        * config/riscv/riscv-protos.h (get_all_predecessors): Remove.
        (get_all_successors): Ditto.
        * config/riscv/riscv-v.cc (get_all_predecessors): Ditto.
        (get_all_successors): Ditto.

---
 gcc/config/riscv/riscv-protos.h |  2 --
 gcc/config/riscv/riscv-v.cc     | 48 ---------------------------------
 2 files changed, 50 deletions(-)

diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
index 46d77ef927c..e91a55ec057 100644
--- a/gcc/config/riscv/riscv-protos.h
+++ b/gcc/config/riscv/riscv-protos.h
@@ -498,8 +498,6 @@ enum floating_point_rounding_mode get_frm_mode (rtx);
 opt_machine_mode vectorize_related_mode (machine_mode, scalar_mode,
                                         poly_uint64);
 unsigned int autovectorize_vector_modes (vec<machine_mode> *, bool);
-hash_set<basic_block> get_all_predecessors (basic_block);
-hash_set<basic_block> get_all_successors (basic_block);
 bool cmp_lmul_le_one (machine_mode);
 bool cmp_lmul_gt_one (machine_mode);
 }
diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
index 3cd1f61de0e..4d95bd773a2 100644
--- a/gcc/config/riscv/riscv-v.cc
+++ b/gcc/config/riscv/riscv-v.cc
@@ -3388,54 +3388,6 @@ expand_fold_extract_last (rtx *ops)
   emit_label (end_label);
 }
 
-hash_set<basic_block>
-get_all_predecessors (basic_block bb)
-{
-  hash_set<basic_block> blocks;
-  auto_vec<basic_block> work_list;
-  hash_set<basic_block> visited_list;
-  work_list.safe_push (bb);
-
-  while (!work_list.is_empty ())
-    {
-      basic_block new_bb = work_list.pop ();
-      visited_list.add (new_bb);
-      edge e;
-      edge_iterator ei;
-      FOR_EACH_EDGE (e, ei, new_bb->preds)
-       {
-         if (!visited_list.contains (e->src))
-           work_list.safe_push (e->src);
-         blocks.add (e->src);
-       }
-    }
-  return blocks;
-}
-
-hash_set<basic_block>
-get_all_successors (basic_block bb)
-{
-  hash_set<basic_block> blocks;
-  auto_vec<basic_block> work_list;
-  hash_set<basic_block> visited_list;
-  work_list.safe_push (bb);
-
-  while (!work_list.is_empty ())
-    {
-      basic_block new_bb = work_list.pop ();
-      visited_list.add (new_bb);
-      edge e;
-      edge_iterator ei;
-      FOR_EACH_EDGE (e, ei, new_bb->succs)
-       {
-         if (!visited_list.contains (e->dest))
-           work_list.safe_push (e->dest);
-         blocks.add (e->dest);
-       }
-    }
-  return blocks;
-}
-
 /* Return true if the LMUL of comparison less than or equal to one.  */
 bool
 cmp_lmul_le_one (machine_mode mode)
-- 
2.36.3