--- a/gcc/tree-cfg.h	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/tree-cfg.h	Thu Oct 25 07:37:49 2018 +0900
@@ -1,5 +1,5 @@
 /* Data and Control Flow Analysis for Trees.
-   Copyright (C) 2001-2017 Free Software Foundation, Inc.
+   Copyright (C) 2001-2018 Free Software Foundation, Inc.
    Contributed by Diego Novillo <dnovillo@redhat.com>
 
 This file is part of GCC.
@@ -33,8 +33,7 @@
 extern void init_empty_tree_cfg (void);
 extern void start_recording_case_labels (void);
 extern void end_recording_case_labels (void);
-extern basic_block label_to_block_fn (struct function *, tree);
-#define label_to_block(t) (label_to_block_fn (cfun, t))
+extern basic_block label_to_block (struct function *, tree);
 extern void cleanup_dead_labels (void);
 extern bool group_case_labels_stmt (gswitch *);
 extern bool group_case_labels (void);
@@ -77,10 +76,11 @@
 					  vec<basic_block> *bbs_p);
 extern void verify_sese (basic_block, basic_block, vec<basic_block> *);
 extern bool gather_ssa_name_hash_map_from (tree const &, tree const &, void *);
+extern void fold_loop_internal_call (gimple *, tree);
 extern basic_block move_sese_region_to_fn (struct function *, basic_block,
 				           basic_block, tree);
 extern void dump_function_to_file (tree, FILE *, dump_flags_t);
-extern void debug_function (tree, int) ;
+extern void debug_function (tree, dump_flags_t);
 extern void print_loops_bb (FILE *, basic_block, int, int);
 extern void print_loops (FILE *, int);
 extern void debug (struct loop &ref);
@@ -102,6 +102,8 @@
 extern tree gimplify_build1 (gimple_stmt_iterator *, enum tree_code,
 			     tree, tree);
 extern void extract_true_false_edges_from_block (basic_block, edge *, edge *);
+extern tree find_case_label_for_value (const gswitch *switch_stmt, tree val);
+extern edge find_taken_edge_switch_expr (const gswitch *switch_stmt, tree val);
 extern unsigned int execute_fixup_cfg (void);
 extern unsigned int split_critical_edges (void);
 extern basic_block insert_cond_bb (basic_block, gimple *, gimple *,
@@ -111,6 +113,10 @@
 						 edge *, edge *);
 extern void generate_range_test (basic_block bb, tree index, tree low,
 				 tree high, tree *lhs, tree *rhs);
+extern basic_block gimple_switch_label_bb (function *, gswitch *, unsigned);
+extern basic_block gimple_switch_default_bb (function *, gswitch *);
+extern edge gimple_switch_edge (function *, gswitch *, unsigned);
+extern edge gimple_switch_default_edge (function *, gswitch *);
 
 /* Return true if the LHS of a call should be removed.  */