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cp-tree.h (specializations_of_same_template_p): Remove.

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* cp-tree.h (specializations_of_same_template_p): Remove.
	* search.c (get_template_base): Don't use it.
	(get_template_base_recursive): Likewise.
	* pt.c (specializations_of_same_template_p): Remove.
	(unify): Don't use it.
	(lookup_template_class): Find the correct parent when setting
	CLASSTYPE_TI_TEMPLATE.

From-SVN: r23053
This commit is contained in:
Mark Mitchell 1998-10-13 14:34:26 +00:00 committed by Mark Mitchell
parent 29a65e3dd4
commit 9fbf56f7a1
4 changed files with 82 additions and 37 deletions
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10
gcc/cp/ChangeLog
View File

@ -1,3 +1,13 @@
1998-10-13 Mark Mitchell <mark@markmitchell.com>
* cp-tree.h (specializations_of_same_template_p): Remove.
* search.c (get_template_base): Don't use it.
(get_template_base_recursive): Likewise.
* pt.c (specializations_of_same_template_p): Remove.
(unify): Don't use it.
(lookup_template_class): Find the correct parent when setting
CLASSTYPE_TI_TEMPLATE.
1998-10-12 Jason Merrill <jason@yorick.cygnus.com>
* tinfo.cc (operator==): Always compare names.

1
gcc/cp/cp-tree.h
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@ -2869,7 +2869,6 @@ extern int is_specialization_of PROTO((tree, tree));
extern int comp_template_args PROTO((tree, tree));
extern void maybe_process_partial_specialization PROTO((tree));
extern void maybe_check_template_type PROTO((tree));
extern int specializations_of_same_template_p PROTO((tree, tree));
extern int processing_specialization;
extern int processing_explicit_instantiation;

102
gcc/cp/pt.c
View File

@ -756,22 +756,6 @@ is_specialization_of (decl, tmpl)
return 0;
}
/* Returns nonzero if T1 and T2 are instances of the same template.
(They may have different template arguments.) */
int
specializations_of_same_template_p (t1, t2)
tree t1;
tree t2;
{
/* For now, we only deal with instances of class templates, since
that is the only way in which this function is used. */
return (most_general_template (CLASSTYPE_TI_TEMPLATE (t1))
== most_general_template (CLASSTYPE_TI_TEMPLATE (t2)));
}
/* Register the specialization SPEC as a specialization of TMPL with
the indicated ARGS. Returns SPEC, or an equivalent prior
declaration, if available. */
@ -3201,22 +3185,26 @@ classtype_mangled_name (t)
if (CLASSTYPE_TEMPLATE_INFO (t)
/* Specializations have already had their names set up in
lookup_template_class. */
&& !CLASSTYPE_TEMPLATE_SPECIALIZATION (t)
&& !CLASSTYPE_TEMPLATE_SPECIALIZATION (t))
{
tree tmpl = most_general_template (CLASSTYPE_TI_TEMPLATE (t));
/* For non-primary templates, the template parameters are
implicit from their surrounding context. */
&& PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)))
{
tree name = DECL_NAME (CLASSTYPE_TI_TEMPLATE (t));
char *mangled_name = mangle_class_name_for_template
(IDENTIFIER_POINTER (name),
DECL_INNERMOST_TEMPLATE_PARMS (CLASSTYPE_TI_TEMPLATE (t)),
CLASSTYPE_TI_ARGS (t));
tree id = get_identifier (mangled_name);
IDENTIFIER_TEMPLATE (id) = name;
return id;
if (PRIMARY_TEMPLATE_P (tmpl))
{
tree name = DECL_NAME (tmpl);
char *mangled_name = mangle_class_name_for_template
(IDENTIFIER_POINTER (name),
DECL_INNERMOST_TEMPLATE_PARMS (tmpl),
CLASSTYPE_TI_ARGS (t));
tree id = get_identifier (mangled_name);
IDENTIFIER_TEMPLATE (id) = name;
return id;
}
}
else
return TYPE_IDENTIFIER (t);
return TYPE_IDENTIFIER (t);
}
static void
@ -3603,10 +3591,59 @@ lookup_template_class (d1, arglist, in_decl, context, entering_scope)
else
type_decl = TYPE_NAME (t);
/* Set up the template information. */
/* Set up the template information. We have to figure out which
template is the immediate parent if this is a full
instantiation. */
if (parm_depth == 1 || is_partial_instantiation
|| !PRIMARY_TEMPLATE_P (template))
/* This case is easy; there are no member templates involved. */
found = template;
else
{
/* This is a full instantiation of a member template. There
should be some partial instantiation of which this is an
instance. */
for (found = DECL_TEMPLATE_INSTANTIATIONS (template);
found; found = TREE_CHAIN (found))
{
int success;
tree tmpl = CLASSTYPE_TI_TEMPLATE (TREE_VALUE (found));
/* We only want partial instantiations, here, not
specializations or full instantiations. */
if (CLASSTYPE_TEMPLATE_SPECIALIZATION (TREE_VALUE (found))
|| !uses_template_parms (TREE_VALUE (found)))
continue;
/* Temporarily reduce by one the number of levels in the
ARGLIST and in FOUND so as to avoid comparing the
last set of arguments. */
TREE_VEC_LENGTH (arglist)--;
TREE_VEC_LENGTH (TREE_PURPOSE (found)) --;
/* See if the arguments match. If they do, then TMPL is
the partial instantiation we want. */
success = comp_template_args (TREE_PURPOSE (found), arglist);
/* Restore the argument vectors to their full size. */
TREE_VEC_LENGTH (arglist)++;
TREE_VEC_LENGTH (TREE_PURPOSE (found))++;
if (success)
{
found = tmpl;
break;
}
}
if (!found)
my_friendly_abort (0);
}
arglist = copy_to_permanent (arglist);
SET_TYPE_TEMPLATE_INFO (t,
tree_cons (template, arglist, NULL_TREE));
tree_cons (found, arglist, NULL_TREE));
DECL_TEMPLATE_INSTANTIATIONS (template)
= tree_cons (arglist, t,
DECL_TEMPLATE_INSTANTIATIONS (template));
@ -7363,7 +7400,8 @@ unify (tparms, targs, parm, arg, strict, explicit_mask)
derivation is involved. */
t = get_template_base (CLASSTYPE_TI_TEMPLATE (parm), arg);
else if (CLASSTYPE_TEMPLATE_INFO (arg)
&& specializations_of_same_template_p (parm, arg))
&& (CLASSTYPE_TI_TEMPLATE (parm)
== CLASSTYPE_TI_TEMPLATE (arg)))
/* Perhaps PARM is something like S<U> and ARG is S<int>.
Then, we should unify `int' and `U'. */
t = arg;

6
gcc/cp/search.c
View File

@ -3317,8 +3317,7 @@ get_template_base_recursive (binfo, rval, template, via_virtual)
tree type = BINFO_TYPE (binfo);
if (CLASSTYPE_TEMPLATE_INFO (type)
&& specializations_of_same_template_p (TREE_TYPE (template),
type))
&& CLASSTYPE_TI_TEMPLATE (type) == template)
{
if (rval == NULL_TREE || rval == type)
return type;
@ -3376,8 +3375,7 @@ get_template_base (template, binfo)
my_friendly_abort (92);
if (CLASSTYPE_TEMPLATE_INFO (type)
&& specializations_of_same_template_p (TREE_TYPE (template),
type))
&& CLASSTYPE_TI_TEMPLATE (type) == template)
return type;
rval = get_template_base_recursive (binfo, NULL_TREE, template, 0);