Stop sharing binfos for indirect virtual bases.
* tree.c (propagate_binfo_offsets): Unshare vbases, too. (layout_basetypes): Likewise. (unshare_base_binfos): Copy vbases, too. * cp-tree.h (BINFO_VIA_PUBLIC, BINFO_BASEINIT_MARKED, BINFO_VBASE_INIT_MARKED): Remove obsolete macros. (BINFO_PUSHDECLS_MARKED, SET_BINFO_PUSHDECLS_MARKED, CLEAR_BINFO_PUSHDECLS_MARKED): New macros. * search.c (lookup_field, lookup_fnfields, lookup_member): Remove reference to BINFO_VIA_PUBLIC. (marked_pushdecls_p, unmarked_pushdecls_p): New fns. (push_class_decls): Use them. (dfs_pushdecls): Use SET_BINFO_PUSHDECLS_MARKED. (dfs_compress_decls): Use CLEAR_BINFO_PUSHDECLS_MARKED. From-SVN: r22017
This commit is contained in:
Jason Merrill
Jason Merrill
parent
1ca7641e55
commit
0ec5701756
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@ -1,3 +1,20 @@
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1998-08-27 Jason Merrill <jason@yorick.cygnus.com>
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Stop sharing binfos for indirect virtual bases.
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* tree.c (propagate_binfo_offsets): Unshare vbases, too.
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(layout_basetypes): Likewise.
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(unshare_base_binfos): Copy vbases, too.
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* cp-tree.h (BINFO_VIA_PUBLIC, BINFO_BASEINIT_MARKED,
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BINFO_VBASE_INIT_MARKED): Remove obsolete macros.
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(BINFO_PUSHDECLS_MARKED, SET_BINFO_PUSHDECLS_MARKED,
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CLEAR_BINFO_PUSHDECLS_MARKED): New macros.
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* search.c (lookup_field, lookup_fnfields, lookup_member): Remove
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reference to BINFO_VIA_PUBLIC.
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(marked_pushdecls_p, unmarked_pushdecls_p): New fns.
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(push_class_decls): Use them.
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(dfs_pushdecls): Use SET_BINFO_PUSHDECLS_MARKED.
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(dfs_compress_decls): Use CLEAR_BINFO_PUSHDECLS_MARKED.
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1998-08-27 Mark Mitchell <mark@markmitchell.com>
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* decl.c (build_enumerator): Set DECL_CONTEXT for the
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@ -42,17 +42,18 @@ Boston, MA 02111-1307, USA. */
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TYPE_USES_COMPLEX_INHERITANCE (in _TYPE).
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C_DECLARED_LABEL_FLAG.
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2: IDENTIFIER_OPNAME_P.
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BINFO_VBASE_MARKED.
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BINFO_FIELDS_MARKED.
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TYPE_VIRTUAL_P.
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PARM_DECL_EXPR (in SAVE_EXPR).
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3: TYPE_USES_VIRTUAL_BASECLASSES (in a class TYPE).
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BINFO_VTABLE_PATH_MARKED.
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BINFO_PUSHDECLS_MARKED.
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(TREE_REFERENCE_EXPR) (in NON_LVALUE_EXPR) (commented-out).
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4: BINFO_NEW_VTABLE_MARKED.
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TREE_HAS_CONSTRUCTOR (in INDIRECT_REF, SAVE_EXPR, CONSTRUCTOR,
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or FIELD_DECL).
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5: BINFO_VIA_PUBLIC.
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BINFO_VBASE_INIT_MARKED.
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5: Not used.
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6: Not used.
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Usage of TYPE_LANG_FLAG_?:
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@ -965,10 +966,6 @@ struct lang_type
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/* Additional macros for inheritance information. */
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/* When following an binfo-specific chain, this is the cumulative
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via-public flag. */
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#define BINFO_VIA_PUBLIC(NODE) TREE_LANG_FLAG_5 (NODE)
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#ifdef MI_MATRIX
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/* When building a matrix to determine by a single lookup
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whether one class is derived from another or not,
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@ -985,12 +982,6 @@ struct lang_type
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#define SET_BINFO_MARKED(NODE) (TREE_VIA_VIRTUAL(NODE)?SET_CLASSTYPE_MARKED(BINFO_TYPE(NODE)):(TREE_LANG_FLAG_0(NODE)=1))
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#define CLEAR_BINFO_MARKED(NODE) (TREE_VIA_VIRTUAL(NODE)?CLEAR_CLASSTYPE_MARKED(BINFO_TYPE(NODE)):(TREE_LANG_FLAG_0(NODE)=0))
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/* Nonzero means marked in building initialization list. */
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#define BINFO_BASEINIT_MARKED(NODE) CLASSTYPE_MARKED2 (BINFO_TYPE (NODE))
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/* Modifier macros */
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#define SET_BINFO_BASEINIT_MARKED(NODE) SET_CLASSTYPE_MARKED2 (BINFO_TYPE (NODE))
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#define CLEAR_BINFO_BASEINIT_MARKED(NODE) CLEAR_CLASSTYPE_MARKED2 (BINFO_TYPE (NODE))
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/* Nonzero means marked in search through virtual inheritance hierarchy. */
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#define BINFO_VBASE_MARKED(NODE) CLASSTYPE_MARKED2 (BINFO_TYPE (NODE))
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/* Modifier macros */
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@ -1015,11 +1006,10 @@ struct lang_type
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#define SET_BINFO_NEW_VTABLE_MARKED(NODE) (TREE_VIA_VIRTUAL(NODE)?SET_CLASSTYPE_MARKED4(BINFO_TYPE(NODE)):(TREE_LANG_FLAG_4(NODE)=1))
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#define CLEAR_BINFO_NEW_VTABLE_MARKED(NODE) (TREE_VIA_VIRTUAL(NODE)?CLEAR_CLASSTYPE_MARKED4(BINFO_TYPE(NODE)):(TREE_LANG_FLAG_4(NODE)=0))
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/* Nonzero means this class has initialized its virtual baseclasses. */
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#define BINFO_VBASE_INIT_MARKED(NODE) \
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(TREE_VIA_VIRTUAL(NODE)?CLASSTYPE_MARKED5(BINFO_TYPE(NODE)):TREE_LANG_FLAG_5(NODE))
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#define SET_BINFO_VBASE_INIT_MARKED(NODE) (TREE_VIA_VIRTUAL(NODE)?SET_CLASSTYPE_MARKED5(BINFO_TYPE(NODE)):(TREE_LANG_FLAG_5(NODE)=1))
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#define CLEAR_BINFO_VBASE_INIT_MARKED(NODE) (TREE_VIA_VIRTUAL(NODE)?CLEAR_CLASSTYPE_MARKED5(BINFO_TYPE(NODE)):(TREE_LANG_FLAG_5(NODE)=0))
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/* Nonzero means this class has done dfs_pushdecls. */
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#define BINFO_PUSHDECLS_MARKED(NODE) BINFO_VTABLE_PATH_MARKED (NODE)
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#define SET_BINFO_PUSHDECLS_MARKED(NODE) SET_BINFO_VTABLE_PATH_MARKED (NODE)
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#define CLEAR_BINFO_PUSHDECLS_MARKED(NODE) CLEAR_BINFO_VTABLE_PATH_MARKED (NODE)
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/* Accessor macros for the vfield slots in structures. */
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@ -1223,7 +1223,6 @@ lookup_field (xbasetype, name, protect, want_type)
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{
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type = xbasetype;
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basetype_path = TYPE_BINFO (type);
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BINFO_VIA_PUBLIC (basetype_path) = 1;
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BINFO_INHERITANCE_CHAIN (basetype_path) = NULL_TREE;
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}
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else
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@ -1852,7 +1851,6 @@ lookup_fnfields (basetype_path, name, complain)
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{
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basetype_chain = CLASSTYPE_BINFO_AS_LIST (type);
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TREE_VIA_PUBLIC (basetype_chain) = 1;
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BINFO_VIA_PUBLIC (basetype_path) = 1;
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BINFO_INHERITANCE_CHAIN (basetype_path) = NULL_TREE;
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}
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else
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@ -2018,7 +2016,6 @@ lookup_member (xbasetype, name, protect, want_type)
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else if (IS_AGGR_TYPE_CODE (TREE_CODE (xbasetype)))
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{
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basetype_path = TYPE_BINFO (xbasetype);
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BINFO_VIA_PUBLIC (basetype_path) = 1;
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BINFO_INHERITANCE_CHAIN (basetype_path) = NULL_TREE;
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}
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else
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@ -2652,6 +2649,10 @@ static int marked_new_vtablep (binfo) tree binfo;
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{ return BINFO_NEW_VTABLE_MARKED (binfo); }
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static int unmarked_new_vtablep (binfo) tree binfo;
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{ return BINFO_NEW_VTABLE_MARKED (binfo) == 0; }
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static int marked_pushdecls_p (binfo) tree binfo;
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{ return BINFO_PUSHDECLS_MARKED (binfo); }
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static int unmarked_pushdecls_p (binfo) tree binfo;
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{ return BINFO_PUSHDECLS_MARKED (binfo) == 0; }
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#if 0
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static int dfs_search_slot_nonempty_p (binfo) tree binfo;
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@ -3611,7 +3612,10 @@ dfs_pushdecls (binfo)
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methods++;
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}
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}
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SET_BINFO_MARKED (binfo);
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/* We can't just use BINFO_MARKED because envelope_add_decl uses
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DERIVED_FROM_P, which calls get_base_distance. */
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SET_BINFO_PUSHDECLS_MARKED (binfo);
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}
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/* Consolidate unique (by name) member functions. */
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@ -3653,7 +3657,7 @@ dfs_compress_decls (binfo)
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}
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}
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}
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CLEAR_BINFO_MARKED (binfo);
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CLEAR_BINFO_PUSHDECLS_MARKED (binfo);
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}
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/* When entering the scope of a class, we cache all of the
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@ -3671,11 +3675,11 @@ push_class_decls (type)
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search_stack = push_search_level (search_stack, &search_obstack);
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/* Push class fields into CLASS_VALUE scope, and mark. */
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dfs_walk (TYPE_BINFO (type), dfs_pushdecls, unmarkedp);
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dfs_walk (TYPE_BINFO (type), dfs_pushdecls, unmarked_pushdecls_p);
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/* Compress fields which have only a single entry
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by a given name, and unmark. */
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dfs_walk (TYPE_BINFO (type), dfs_compress_decls, markedp);
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dfs_walk (TYPE_BINFO (type), dfs_compress_decls, marked_pushdecls_p);
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/* Open up all the closed envelopes and push the contained decls into
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class scope. */
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@ -584,7 +584,10 @@ propagate_binfo_offsets (binfo, offset)
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tree base_binfo = TREE_VEC_ELT (binfos, i);
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if (TREE_VIA_VIRTUAL (base_binfo))
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i += 1;
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{
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i += 1;
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unshare_base_binfos (base_binfo);
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}
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else
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{
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int j;
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@ -639,16 +642,16 @@ unshare_base_binfos (base_binfo)
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j >= 0; j--)
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{
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tree base_base_binfo = TREE_VEC_ELT (base_binfos, j);
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if (! TREE_VIA_VIRTUAL (base_base_binfo))
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TREE_VEC_ELT (base_binfos, j)
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= make_binfo (BINFO_OFFSET (base_base_binfo),
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base_base_binfo,
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BINFO_VTABLE (base_base_binfo),
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BINFO_VIRTUALS (base_base_binfo),
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chain);
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TREE_VEC_ELT (base_binfos, j)
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= make_binfo (BINFO_OFFSET (base_base_binfo),
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base_base_binfo,
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BINFO_VTABLE (base_base_binfo),
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BINFO_VIRTUALS (base_base_binfo),
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chain);
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chain = TREE_VEC_ELT (base_binfos, j);
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TREE_VIA_PUBLIC (chain) = TREE_VIA_PUBLIC (base_base_binfo);
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TREE_VIA_PROTECTED (chain) = TREE_VIA_PROTECTED (base_base_binfo);
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TREE_VIA_VIRTUAL (chain) = TREE_VIA_VIRTUAL (base_base_binfo);
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BINFO_INHERITANCE_CHAIN (chain) = base_binfo;
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}
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@ -754,14 +757,16 @@ layout_basetypes (rec, max)
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tree field = TYPE_FIELDS (rec);
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if (TREE_VIA_VIRTUAL (base_binfo))
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continue;
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my_friendly_assert (TREE_TYPE (field) == basetype, 23897);
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BINFO_OFFSET (base_binfo)
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= size_int (CEIL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (field)),
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BITS_PER_UNIT));
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unshare_base_binfos (base_binfo);
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TYPE_FIELDS (rec) = TREE_CHAIN (field);
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unshare_base_binfos (base_binfo);
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else
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{
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my_friendly_assert (TREE_TYPE (field) == basetype, 23897);
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BINFO_OFFSET (base_binfo)
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= size_int (CEIL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (field)),
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BITS_PER_UNIT));
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unshare_base_binfos (base_binfo);
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TYPE_FIELDS (rec) = TREE_CHAIN (field);
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}
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}
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for (vbase_types = CLASSTYPE_VBASECLASSES (rec); vbase_types;
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