* *
****************************************************************************/
-/* We have attribute handlers using C specific format specifiers in warning
- messages. Make sure they are properly recognized. */
-#define GCC_DIAG_STYLE __gcc_cdiag__
-
#include "config.h"
#include "system.h"
#include "coretypes.h"
static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
static tree handle_vector_size_attribute (tree *, tree, tree, int, bool *);
+static tree handle_vector_type_attribute (tree *, tree, tree, int, bool *);
/* Fake handler for attributes we don't properly support, typically because
they'd require dragging a lot of the common-c front-end circuitry. */
{ "type generic", 0, 0, false, true, true, handle_type_generic_attribute },
{ "vector_size", 1, 1, false, true, false, handle_vector_size_attribute },
+ { "vector_type", 0, 0, false, true, false, handle_vector_type_attribute },
{ "may_alias", 0, 0, false, true, false, NULL },
/* ??? format and format_arg are heavy and not supported, which actually
if ((code = TREE_CODE (t1)) != TREE_CODE (t2))
return 0;
+ /* Vector types are also compatible if they have the same number of subparts
+ and the same form of (scalar) element type. */
+ if (code == VECTOR_TYPE
+ && TYPE_VECTOR_SUBPARTS (t1) == TYPE_VECTOR_SUBPARTS (t2)
+ && TREE_CODE (TREE_TYPE (t1)) == TREE_CODE (TREE_TYPE (t2))
+ && TYPE_PRECISION (TREE_TYPE (t1)) == TYPE_PRECISION (TREE_TYPE (t2)))
+ return 1;
+
/* Array types are also compatible if they are constrained and have
the same component type and the same domain. */
if (code == ARRAY_TYPE
}
break;
+ case VECTOR_CST:
+ /* If we are converting a VECTOR_CST to a mere variant type, just make
+ a new one in the proper type. */
+ if (code == ecode && gnat_types_compatible_p (type, etype))
+ {
+ expr = copy_node (expr);
+ TREE_TYPE (expr) = type;
+ return expr;
+ }
+
case CONSTRUCTOR:
/* If we are converting a CONSTRUCTOR to a mere variant type, just make
a new one in the proper type. */
return expr;
}
}
+
+ /* Likewise for a conversion between array type and vector type with a
+ compatible representative array. */
+ else if (code == VECTOR_TYPE
+ && ecode == ARRAY_TYPE
+ && gnat_types_compatible_p (TYPE_REPRESENTATIVE_ARRAY (type),
+ etype))
+ {
+ VEC(constructor_elt,gc) *e = CONSTRUCTOR_ELTS (expr);
+ unsigned HOST_WIDE_INT len = VEC_length (constructor_elt, e);
+ VEC(constructor_elt,gc) *v;
+ unsigned HOST_WIDE_INT ix;
+ tree value;
+
+ /* Build a VECTOR_CST from a *constant* array constructor. */
+ if (TREE_CONSTANT (expr))
+ {
+ bool constant_p = true;
+
+ /* Iterate through elements and check if all constructor
+ elements are *_CSTs. */
+ FOR_EACH_CONSTRUCTOR_VALUE (e, ix, value)
+ if (!CONSTANT_CLASS_P (value))
+ {
+ constant_p = false;
+ break;
+ }
+
+ if (constant_p)
+ return build_vector_from_ctor (type,
+ CONSTRUCTOR_ELTS (expr));
+ }
+
+ /* Otherwise, build a regular vector constructor. */
+ v = VEC_alloc (constructor_elt, gc, len);
+ FOR_EACH_CONSTRUCTOR_VALUE (e, ix, value)
+ {
+ constructor_elt *elt = VEC_quick_push (constructor_elt, v, NULL);
+ elt->index = NULL_TREE;
+ elt->value = value;
+ }
+ expr = copy_node (expr);
+ TREE_TYPE (expr) = type;
+ CONSTRUCTOR_ELTS (expr) = v;
+ return expr;
+ }
break;
case UNCONSTRAINED_ARRAY_REF:
if (type == TREE_TYPE (op0))
return op0;
- /* Otherwise, if we're converting between two aggregate types, we
- might be allowed to substitute the VIEW_CONVERT_EXPR target type
- in place or to just convert the inner expression. */
- if (AGGREGATE_TYPE_P (type) && AGGREGATE_TYPE_P (etype))
+ /* Otherwise, if we're converting between two aggregate or vector
+ types, we might be allowed to substitute the VIEW_CONVERT_EXPR
+ target type in place or to just convert the inner expression. */
+ if ((AGGREGATE_TYPE_P (type) && AGGREGATE_TYPE_P (etype))
+ || (VECTOR_TYPE_P (type) && VECTOR_TYPE_P (etype)))
{
/* If we are converting between mere variants, we can just
substitute the VIEW_CONVERT_EXPR in place. */
if (TYPE_FAT_POINTER_P (type) && !TYPE_FAT_POINTER_P (etype))
return convert_to_fat_pointer (type, expr);
- /* If we are converting between two aggregate types that are mere
- variants, just make a VIEW_CONVERT_EXPR. */
- else if (code == ecode
- && AGGREGATE_TYPE_P (type)
- && gnat_types_compatible_p (type, etype))
+ /* If we are converting between two aggregate or vector types that are mere
+ variants, just make a VIEW_CONVERT_EXPR. Likewise when we are converting
+ to a vector type from its representative array type. */
+ else if ((code == ecode
+ && (AGGREGATE_TYPE_P (type) || VECTOR_TYPE_P (type))
+ && gnat_types_compatible_p (type, etype))
+ || (code == VECTOR_TYPE
+ && ecode == ARRAY_TYPE
+ && gnat_types_compatible_p (TYPE_REPRESENTATIVE_ARRAY (type),
+ etype)))
return build1 (VIEW_CONVERT_EXPR, type, expr);
/* In all other cases of related types, make a NOP_EXPR. */
return unchecked_convert (type, expr, false);
case UNCONSTRAINED_ARRAY_TYPE:
+ /* If the input is a VECTOR_TYPE, convert to the representative
+ array type first. */
+ if (ecode == VECTOR_TYPE)
+ {
+ expr = convert (TYPE_REPRESENTATIVE_ARRAY (etype), expr);
+ etype = TREE_TYPE (expr);
+ ecode = TREE_CODE (etype);
+ }
+
/* If EXPR is a constrained array, take its address, convert it to a
fat pointer, and then dereference it. Likewise if EXPR is a
record containing both a template and a constrained array.
return exp;
}
+
+/* If EXP's type is a VECTOR_TYPE, return EXP converted to the associated
+ TYPE_REPRESENTATIVE_ARRAY. */
+
+tree
+maybe_vector_array (tree exp)
+{
+ tree etype = TREE_TYPE (exp);
+
+ if (VECTOR_TYPE_P (etype))
+ exp = convert (TYPE_REPRESENTATIVE_ARRAY (etype), exp);
+
+ return exp;
+}
\f
/* Return true if EXPR is an expression that can be folded as an operand
of a VIEW_CONVERT_EXPR. See ada-tree.h for a complete rationale. */
expr = unchecked_convert (type, expr, notrunc_p);
}
- /* We have a special case when we are converting between two
- unconstrained array types. In that case, take the address,
- convert the fat pointer types, and dereference. */
+ /* We have a special case when we are converting between two unconstrained
+ array types. In that case, take the address, convert the fat pointer
+ types, and dereference. */
else if (TREE_CODE (etype) == UNCONSTRAINED_ARRAY_TYPE
&& TREE_CODE (type) == UNCONSTRAINED_ARRAY_TYPE)
expr = build_unary_op (INDIRECT_REF, NULL_TREE,
build1 (VIEW_CONVERT_EXPR, TREE_TYPE (type),
build_unary_op (ADDR_EXPR, NULL_TREE,
expr)));
+
+ /* Another special case is when we are converting to a vector type from its
+ representative array type; this a regular conversion. */
+ else if (TREE_CODE (type) == VECTOR_TYPE
+ && TREE_CODE (etype) == ARRAY_TYPE
+ && gnat_types_compatible_p (TYPE_REPRESENTATIVE_ARRAY (type),
+ etype))
+ expr = convert (type, expr);
+
else
{
expr = maybe_unconstrained_array (expr);
/* ??? TODO: Support types. */
else
{
- warning (OPT_Wattributes, "%qE attribute ignored", name);
+ warning (OPT_Wattributes, "%qs attribute ignored",
+ IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
if (!params)
{
warning (OPT_Wattributes,
- "%qE attribute requires prototypes with named arguments", name);
+ "%qs attribute requires prototypes with named arguments",
+ IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
else
if (VOID_TYPE_P (TREE_VALUE (params)))
{
warning (OPT_Wattributes,
- "%qE attribute only applies to variadic functions", name);
+ "%qs attribute only applies to variadic functions",
+ IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
}
TYPE_READONLY (TREE_TYPE (type)), 1));
else
{
- warning (OPT_Wattributes, "%qE attribute ignored", name);
+ warning (OPT_Wattributes, "%qs attribute ignored",
+ IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
DECL_IS_MALLOC (*node) = 1;
else
{
- warning (OPT_Wattributes, "%qE attribute ignored", name);
+ warning (OPT_Wattributes, "%qs attribute ignored",
+ IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
if (!host_integerp (size, 1))
{
- warning (OPT_Wattributes, "%qE attribute ignored", name);
+ warning (OPT_Wattributes, "%qs attribute ignored",
+ IDENTIFIER_POINTER (name));
return NULL_TREE;
}
|| !host_integerp (TYPE_SIZE_UNIT (type), 1)
|| TREE_CODE (type) == BOOLEAN_TYPE)
{
- error ("invalid vector type for attribute %qE", name);
+ error ("invalid vector type for attribute %qs",
+ IDENTIFIER_POINTER (name));
return NULL_TREE;
}
return NULL_TREE;
}
+/* Handle a "vector_type" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_vector_type_attribute (tree *node, tree name, tree ARG_UNUSED (args),
+ int ARG_UNUSED (flags),
+ bool *no_add_attrs)
+{
+ /* Vector representative type and size. */
+ tree rep_type = *node;
+ tree rep_size = TYPE_SIZE_UNIT (rep_type);
+ tree rep_name;
+
+ /* Vector size in bytes and number of units. */
+ unsigned HOST_WIDE_INT vec_bytes, vec_units;
+
+ /* Vector element type and mode. */
+ tree elem_type;
+ enum machine_mode elem_mode;
+
+ *no_add_attrs = true;
+
+ /* Get the representative array type, possibly nested within a
+ padding record e.g. for alignment purposes. */
+
+ if (TREE_CODE (rep_type) == RECORD_TYPE && TYPE_IS_PADDING_P (rep_type))
+ rep_type = TREE_TYPE (TYPE_FIELDS (rep_type));
+
+ if (TREE_CODE (rep_type) != ARRAY_TYPE)
+ {
+ error ("attribute %qs applies to array types only",
+ IDENTIFIER_POINTER (name));
+ return NULL_TREE;
+ }
+
+ /* Silently punt on variable sizes. We can't make vector types for them,
+ need to ignore them on front-end generated subtypes of unconstrained
+ bases, and this attribute is for binding implementors, not end-users, so
+ we should never get there from legitimate explicit uses. */
+
+ if (!host_integerp (rep_size, 1))
+ return NULL_TREE;
+
+ /* Get the element type/mode and check this is something we know
+ how to make vectors of. */
+
+ elem_type = TREE_TYPE (rep_type);
+ elem_mode = TYPE_MODE (elem_type);
+
+ if ((!INTEGRAL_TYPE_P (elem_type)
+ && !SCALAR_FLOAT_TYPE_P (elem_type)
+ && !FIXED_POINT_TYPE_P (elem_type))
+ || (!SCALAR_FLOAT_MODE_P (elem_mode)
+ && GET_MODE_CLASS (elem_mode) != MODE_INT
+ && !ALL_SCALAR_FIXED_POINT_MODE_P (elem_mode))
+ || !host_integerp (TYPE_SIZE_UNIT (elem_type), 1))
+ {
+ error ("invalid element type for attribute %qs",
+ IDENTIFIER_POINTER (name));
+ return NULL_TREE;
+ }
+
+ /* Sanity check the vector size and element type consistency. */
+
+ vec_bytes = tree_low_cst (rep_size, 1);
+
+ if (vec_bytes % tree_low_cst (TYPE_SIZE_UNIT (elem_type), 1))
+ {
+ error ("vector size not an integral multiple of component size");
+ return NULL;
+ }
+
+ if (vec_bytes == 0)
+ {
+ error ("zero vector size");
+ return NULL;
+ }
+
+ vec_units = vec_bytes / tree_low_cst (TYPE_SIZE_UNIT (elem_type), 1);
+ if (vec_units & (vec_units - 1))
+ {
+ error ("number of components of the vector not a power of two");
+ return NULL_TREE;
+ }
+
+ /* Build the vector type and replace. */
+
+ *node = build_vector_type (elem_type, vec_units);
+ rep_name = TYPE_NAME (rep_type);
+ if (TREE_CODE (rep_name) == TYPE_DECL)
+ rep_name = DECL_NAME (rep_name);
+ TYPE_NAME (*node) = rep_name;
+ TYPE_REPRESENTATIVE_ARRAY (*node) = rep_type;
+
+ return NULL_TREE;
+}
+
/* ----------------------------------------------------------------------- *
* BUILTIN FUNCTIONS *
* ----------------------------------------------------------------------- */
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