[C++ PATCH] Kill -fno-for-scope

https://gcc.gnu.org/ml/gcc-patches/2018-05/msg00299.html
	gcc/cp/
	Remove fno-for-scope
	* cp-tree.h (DECL_ERROR_REPORTED, DECL_DEAD_FOR_LOCAL)
	(DECL_HAS_SHADOWED_FOR_VAR_P, DECL_SHADOWED_FOR_VAR)
	(SET_DECL_SHADOWED_FOR_VAR): Delete.
	(decl_shadowed_for_var_lookup, decl_shadowed_for_var_insert)
	(check_for_out_of_scope_variable, init_shadowed_var_for_decl):
	Don't declare.
	* name-lookup.h (struct cp_binding_level): Remove
	dead_vars_from_for field.
	* cp-lang.c (cp_init_ts): Delete.
	(LANG_HOOKS_INIT_TS): Override to cp_common_init_ts.
	* cp-objcp-common.c (shadowed_var_for_decl): Delete.
	(decl_shadowed_for_var_lookup, decl_shadowed_for_var_insert)
	(init_shadowed_var_for_decl): Delete.
	* decl.c (poplevel): Remove shadowed for var handling.
	(cxx_init_decl_processing): Remove -ffor-scope deprecation.
	* name-lookup.c (find_local_binding): Remove shadowed for var
	handling.
	(check_local_shadow): Likewise.
	(check_for_out_of_scope_variable): Delete.
	* parser.c (cp_parser_primary_expression): Remove shadowed for var
	handling.
	* pt.c (tsubst_decl): Remove DECL_DEAD_FOR_LOCAL setting.
	* semantics.c (begin_for_scope): Always have a scope.
	(begin_for_stmt, finish_for_stmt): Remove ARM-for scope handling.
	(begin_range_for_stmt, finish_id_expression): Likewise.

	gcc/
	* doc/invoke.texi (C++ Dialect Options): Remove -ffor-scope.
	* doc/extend.texi (Deprecated Features): Remove -fno-for-scope
	(Backwards Compatibility): Likewise.

	c-family/
	* c.opt (ffor-scope): Remove functionality, issue warning.

	gcc/objcp/
	* objcp-lang.c (objcxx_init_ts): Don't call init_shadowed_var_for_decl.

	gcc/testsuite/
	* g++.dg/cpp0x/range-for10.C: Delete.
	* g++.dg/ext/forscope1.C: Delete.
	* g++.dg/ext/forscope2.C: Delete.
	* g++.dg/template/for1.C: Delete.

From-SVN: r260015

1 files changed, 0 insertions, 37 deletions

diff --git a/gcc/cp/cp-objcp-common.c b/gcc/cp/cp-objcp-common.c
index 5289a89..25f0b3e 100644
--- a/gcc/cp/cp-objcp-common.c
+++ b/gcc/cp/cp-objcp-common.c
@@ -298,43 +298,6 @@ has_c_linkage (const_tree decl)
   return DECL_EXTERN_C_P (decl);
 }
 
-static GTY ((cache))
-     hash_table<tree_decl_map_cache_hasher> *shadowed_var_for_decl;
-
-/* Lookup a shadowed var for FROM, and return it if we find one.  */
-
-tree
-decl_shadowed_for_var_lookup (tree from)
-{
-  struct tree_decl_map *h, in;
-  in.base.from = from;
-
-  h = shadowed_var_for_decl->find_with_hash (&in, DECL_UID (from));
-  if (h)
-    return h->to;
-  return NULL_TREE;
-}
-
-/* Insert a mapping FROM->TO in the shadowed var hashtable.  */
-
-void
-decl_shadowed_for_var_insert (tree from, tree to)
-{
-  struct tree_decl_map *h;
-
-  h = ggc_alloc<tree_decl_map> ();
-  h->base.from = from;
-  h->to = to;
-  *shadowed_var_for_decl->find_slot_with_hash (h, DECL_UID (from), INSERT) = h;
-}
-
-void
-init_shadowed_var_for_decl (void)
-{
-  shadowed_var_for_decl
-    = hash_table<tree_decl_map_cache_hasher>::create_ggc (512);
-}
-
 /* Return true if stmt can fall through.  Used by block_may_fallthru
    default case.  */