参照元†
- tree innertype
- poly_int64 nunits
- machine_mode mode
返り値†
/* Create a new vector type node holding NUNITS units of type INNERTYPE,
and mapped to the machine mode MODE. Initialize its fields and build
the information necessary for debugging output. */
static tree
make_vector_type (tree innertype, poly_int64 nunits, machine_mode mode)
{
tree t;
tree mv_innertype = TYPE_MAIN_VARIANT (innertype);
t = make_node (VECTOR_TYPE);
TREE_TYPE (t) = mv_innertype;
SET_TYPE_VECTOR_SUBPARTS (t, nunits);
SET_TYPE_MODE (t, mode);
if (TYPE_STRUCTURAL_EQUALITY_P (mv_innertype) || in_lto_p)
SET_TYPE_STRUCTURAL_EQUALITY (t);
else if ((TYPE_CANONICAL (mv_innertype) != innertype
|| mode != VOIDmode)
&& !VECTOR_BOOLEAN_TYPE_P (t))
TYPE_CANONICAL (t)
= make_vector_type (TYPE_CANONICAL (mv_innertype), nunits, VOIDmode);
layout_type (t);
hashval_t hash = type_hash_canon_hash (t);
t = type_hash_canon (hash, t);
/* We have built a main variant, based on the main variant of the
inner type. Use it to build the variant we return. */
if ((TYPE_ATTRIBUTES (innertype) || TYPE_QUALS (innertype))
&& TREE_TYPE (t) != innertype)
return build_type_attribute_qual_variant (t,
TYPE_ATTRIBUTES (innertype),
TYPE_QUALS (innertype));
return t;
}
コメント†