c++: Remove LOOKUP_CONSTINIT.

Since we now have DECL_DECLARED_CONSTINIT_P, we no longer need
LOOKUP_CONSTINIT.

gcc/cp/ChangeLog:

	* cp-tree.h (LOOKUP_CONSTINIT): Remove.
	(LOOKUP_REWRITTEN): Adjust.
	* decl.c (duplicate_decls): Set DECL_DECLARED_CONSTINIT_P.
	(check_initializer): Use DECL_DECLARED_CONSTINIT_P instead of
	LOOKUP_CONSTINIT.
	(cp_finish_decl): Don't set DECL_DECLARED_CONSTINIT_P.  Use
	DECL_DECLARED_CONSTINIT_P instead of LOOKUP_CONSTINIT.
	(grokdeclarator): Set DECL_DECLARED_CONSTINIT_P.
	* decl2.c (grokfield): Don't handle LOOKUP_CONSTINIT.
	* parser.c (cp_parser_decomposition_declaration): Remove
	LOOKUP_CONSTINIT handling.
	(cp_parser_init_declarator): Likewise.
	* pt.c (tsubst_expr): Likewise.
	(instantiate_decl): Likewise.
	* typeck2.c (store_init_value): Use DECL_DECLARED_CONSTINIT_P instead
	of LOOKUP_CONSTINIT.

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index b166475..5923574 100644 (file)
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -5598,13 +5598,11 @@ enum overload_flags { NO_SPECIAL = 0, DTOR_FLAG, TYPENAME_FLAG };
 #define LOOKUP_DELEGATING_CONS (LOOKUP_NO_NON_INTEGRAL << 1)
 /* Allow initialization of a flexible array members.  */
 #define LOOKUP_ALLOW_FLEXARRAY_INIT (LOOKUP_DELEGATING_CONS << 1)
-/* Require constant initialization of a non-constant variable.  */
-#define LOOKUP_CONSTINIT (LOOKUP_ALLOW_FLEXARRAY_INIT << 1)
 /* We're looking for either a rewritten comparison operator candidate or the
    operator to use on the former's result.  We distinguish between the two by
    knowing that comparisons other than == and <=> must be the latter, as must
    a <=> expression trying to rewrite to <=> without reversing.  */
-#define LOOKUP_REWRITTEN (LOOKUP_CONSTINIT << 1)
+#define LOOKUP_REWRITTEN (LOOKUP_ALLOW_FLEXARRAY_INIT << 1)
 /* Reverse the order of the two arguments for comparison rewriting.  First we
    swap the arguments in add_operator_candidates, then we swap the conversions
    in add_candidate (so that they correspond to the original order of the

diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index f1b7fba..8922ef5 100644 (file)
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -2312,6 +2312,8 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
            |= DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (olddecl);
          DECL_DECLARED_CONSTEXPR_P (newdecl)
            |= DECL_DECLARED_CONSTEXPR_P (olddecl);
+         DECL_DECLARED_CONSTINIT_P (newdecl)
+           |= DECL_DECLARED_CONSTINIT_P (olddecl);
 
          /* Merge the threadprivate attribute from OLDDECL into NEWDECL.  */
          if (DECL_LANG_SPECIFIC (olddecl)
@@ -6884,7 +6886,7 @@ check_initializer (tree decl, tree init, int flags, vec<tree, va_gc> **cleanups)
              flags |= LOOKUP_ALREADY_DIGESTED;
            }
          else if (DECL_DECLARED_CONSTEXPR_P (decl)
-                  || (flags & LOOKUP_CONSTINIT))
+                  || DECL_DECLARED_CONSTINIT_P (decl))
            {
              /* Declared constexpr or constinit, but no suitable initializer;
                 massage init appropriately so we can pass it into
@@ -7675,10 +7677,6 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
          DECL_INITIAL (decl) = NULL_TREE;
        }
 
-      /* Handle `constinit' on variable templates.  */
-      if (flags & LOOKUP_CONSTINIT)
-       DECL_DECLARED_CONSTINIT_P (decl) = true;
-
       /* Generally, initializers in templates are expanded when the
         template is instantiated.  But, if DECL is a variable constant
         then it can be used in future constant expressions, so its value
@@ -7782,7 +7780,7 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
       /* [dcl.constinit]/1 "The constinit specifier shall be applied
         only to a declaration of a variable with static or thread storage
         duration."  */
-      if ((flags & LOOKUP_CONSTINIT)
+      if (DECL_DECLARED_CONSTINIT_P (decl)
          && !(dk == dk_thread || dk == dk_static))
        {
          error_at (DECL_SOURCE_LOCATION (decl),
@@ -13829,9 +13827,15 @@ grokdeclarator (const cp_declarator *declarator,
     else if (storage_class == sc_static)
       DECL_THIS_STATIC (decl) = 1;
 
-    /* Set constexpr flag on vars (functions got it in grokfndecl).  */
-    if (constexpr_p && VAR_P (decl))
-      DECL_DECLARED_CONSTEXPR_P (decl) = true;
+    if (VAR_P (decl))
+      {
+       /* Set constexpr flag on vars (functions got it in grokfndecl).  */
+       if (constexpr_p)
+         DECL_DECLARED_CONSTEXPR_P (decl) = true;
+       /* And the constinit flag (which only applies to variables).  */
+       else if (constinit_p)
+         DECL_DECLARED_CONSTINIT_P (decl) = true;
+      }
 
     /* Record constancy and volatility on the DECL itself .  There's
        no need to do this when processing a template; we'll do this

diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c
index 50a042e..fd48a21 100644 (file)
--- a/gcc/cp/decl2.c
+++ b/gcc/cp/decl2.c
@@ -994,9 +994,6 @@ grokfield (const cp_declarator *declarator,
   else
     flags = LOOKUP_IMPLICIT;
 
-  if (decl_spec_seq_has_spec_p (declspecs, ds_constinit))
-    flags |= LOOKUP_CONSTINIT;
-
   switch (TREE_CODE (value))
     {
     case VAR_DECL:

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 916ea6c..fed1689 100644 (file)
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -14096,12 +14096,9 @@ cp_parser_decomposition_declaration (cp_parser *parser,
 
       if (decl != error_mark_node)
        {
-         int flags = (decl_spec_seq_has_spec_p (decl_specifiers, ds_constinit)
-                      ? LOOKUP_CONSTINIT : 0);
          cp_maybe_mangle_decomp (decl, prev, v.length ());
          cp_finish_decl (decl, initializer, non_constant_p, NULL_TREE,
-                         (is_direct_init ? LOOKUP_NORMAL : LOOKUP_IMPLICIT)
-                         | flags);
+                         (is_direct_init ? LOOKUP_NORMAL : LOOKUP_IMPLICIT));
          cp_finish_decomp (decl, prev, v.length ());
        }
     }
@@ -21018,8 +21015,6 @@ cp_parser_init_declarator (cp_parser* parser,
      declarations.  */
   if (!member_p && decl && decl != error_mark_node && !range_for_decl_p)
     {
-      int cf = (decl_spec_seq_has_spec_p (decl_specifiers, ds_constinit)
-               ? LOOKUP_CONSTINIT : 0);
       cp_finish_decl (decl,
                      initializer, !is_non_constant_init,
                      asm_specification,
@@ -21028,7 +21023,7 @@ cp_parser_init_declarator (cp_parser* parser,
                         `explicit' constructor is OK.  Otherwise, an
                         `explicit' constructor cannot be used.  */
                      ((is_direct_init || !is_initialized)
-                      ? LOOKUP_NORMAL : LOOKUP_IMPLICIT) | cf);
+                      ? LOOKUP_NORMAL : LOOKUP_IMPLICIT));
     }
   else if ((cxx_dialect != cxx98) && friend_p
           && decl && TREE_CODE (decl) == FUNCTION_DECL)

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 30c6735..0f52a9e 100644 (file)
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -18103,10 +18103,7 @@ tsubst_expr (tree t, tree args, tsubst_flags_t complain, tree in_decl,
                       now.  */
                    predeclare_vla (decl);
 
-                   bool constinit_p
-                     = VAR_P (decl) && DECL_DECLARED_CONSTINIT_P (decl);
-                   cp_finish_decl (decl, init, const_init, NULL_TREE,
-                                   constinit_p ? LOOKUP_CONSTINIT : 0);
+                   cp_finish_decl (decl, init, const_init, NULL_TREE, 0);
 
                    if (ndecl != error_mark_node)
                      cp_finish_decomp (ndecl, first, cnt);
@@ -25758,8 +25755,7 @@ instantiate_decl (tree d, bool defer_ok, bool expl_inst_class_mem_p)
         push_nested_class (DECL_CONTEXT (d));
 
       const_init = DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (code_pattern);
-      int flags = (DECL_DECLARED_CONSTINIT_P (d) ? LOOKUP_CONSTINIT : 0);
-      cp_finish_decl (d, init, const_init, NULL_TREE, flags);
+      cp_finish_decl (d, init, const_init, NULL_TREE, 0);
 
       if (enter_context)
         pop_nested_class ();

diff --git a/gcc/cp/typeck2.c b/gcc/cp/typeck2.c
index b95f112..e259a42 100644 (file)
--- a/gcc/cp/typeck2.c
+++ b/gcc/cp/typeck2.c
@@ -920,7 +920,7 @@ store_init_value (tree decl, tree init, vec<tree, va_gc>** cleanups, int flags)
          /* [dcl.constinit]/2 "If a variable declared with the constinit
             specifier has dynamic initialization, the program is
             ill-formed."  */
-         if (flags & LOOKUP_CONSTINIT)
+         if (DECL_DECLARED_CONSTINIT_P (decl))
            {
              error_at (location_of (decl),
                        "%<constinit%> variable %qD does not have a constant "