return gnat_build_constructor (template_type, template_elts);
}
\f
+/* Return true if TYPE is suitable for the element type of a vector. */
+
+static bool
+type_for_vector_element_p (tree type)
+{
+ enum machine_mode mode;
+
+ if (!INTEGRAL_TYPE_P (type)
+ && !SCALAR_FLOAT_TYPE_P (type)
+ && !FIXED_POINT_TYPE_P (type))
+ return false;
+
+ mode = TYPE_MODE (type);
+ if (GET_MODE_CLASS (mode) != MODE_INT
+ && !SCALAR_FLOAT_MODE_P (mode)
+ && !ALL_SCALAR_FIXED_POINT_MODE_P (mode))
+ return false;
+
+ return true;
+}
+
+/* Return a vector type given the SIZE and the INNER_TYPE, or NULL_TREE if
+ this is not possible. If ATTRIBUTE is non-zero, we are processing the
+ attribute declaration and want to issue error messages on failure. */
+
+static tree
+build_vector_type_for_size (tree inner_type, tree size, tree attribute)
+{
+ unsigned HOST_WIDE_INT size_int, inner_size_int;
+ int nunits;
+
+ /* Silently punt on variable sizes. We can't make vector types for them,
+ need to ignore them on front-end generated subtypes of unconstrained
+ base types, and this attribute is for binding implementors, not end
+ users, so we should never get there from legitimate explicit uses. */
+ if (!tree_fits_uhwi_p (size))
+ return NULL_TREE;
+ size_int = tree_to_uhwi (size);
+
+ if (!type_for_vector_element_p (inner_type))
+ {
+ if (attribute)
+ error ("invalid element type for attribute %qs",
+ IDENTIFIER_POINTER (attribute));
+ return NULL_TREE;
+ }
+ inner_size_int = tree_to_uhwi (TYPE_SIZE_UNIT (inner_type));
+
+ if (size_int % inner_size_int)
+ {
+ if (attribute)
+ error ("vector size not an integral multiple of component size");
+ return NULL_TREE;
+ }
+
+ if (size_int == 0)
+ {
+ if (attribute)
+ error ("zero vector size");
+ return NULL_TREE;
+ }
+
+ nunits = size_int / inner_size_int;
+ if (nunits & (nunits - 1))
+ {
+ if (attribute)
+ error ("number of components of vector not a power of two");
+ return NULL_TREE;
+ }
+
+ return build_vector_type (inner_type, nunits);
+}
+
+/* Return a vector type whose representative array type is ARRAY_TYPE, or
+ NULL_TREE if this is not possible. If ATTRIBUTE is non-zero, we are
+ processing the attribute and want to issue error messages on failure. */
+
+static tree
+build_vector_type_for_array (tree array_type, tree attribute)
+{
+ tree vector_type = build_vector_type_for_size (TREE_TYPE (array_type),
+ TYPE_SIZE_UNIT (array_type),
+ attribute);
+ if (!vector_type)
+ return NULL_TREE;
+
+ TYPE_REPRESENTATIVE_ARRAY (vector_type) = array_type;
+ return vector_type;
+}
+\f
/* Helper routine to make a descriptor field. FIELD_LIST is the list of decls
being built; the new decl is chained on to the front of the list. */
tree etype = TREE_TYPE (expr);
enum tree_code ecode = TREE_CODE (etype);
enum tree_code code = TREE_CODE (type);
+ tree tem;
int c;
/* If the expression is already of the right type, we are done. */
etype))
expr = convert (type, expr);
+ /* And, if the array type is not the representative, we try to build an
+ intermediate vector type of which the array type is the representative
+ and to do the unchecked conversion between the vector types, in order
+ to enable further simplifications in the middle-end. */
+ else if (code == VECTOR_TYPE
+ && ecode == ARRAY_TYPE
+ && (tem = build_vector_type_for_array (etype, NULL_TREE)))
+ {
+ expr = convert (tem, expr);
+ return unchecked_convert (type, expr, notrunc_p);
+ }
+
/* If we are converting a CONSTRUCTOR to a more aligned RECORD_TYPE, bump
the alignment of the CONSTRUCTOR to speed up the copy operation. */
else if (TREE_CODE (expr) == CONSTRUCTOR
static tree
handle_vector_size_attribute (tree *node, tree name, tree args,
- int ARG_UNUSED (flags),
- bool *no_add_attrs)
+ int ARG_UNUSED (flags), bool *no_add_attrs)
{
- unsigned HOST_WIDE_INT vecsize, nunits;
- enum machine_mode orig_mode;
- tree type = *node, new_type, size;
+ tree type = *node;
+ tree vector_type;
*no_add_attrs = true;
- size = TREE_VALUE (args);
-
- if (!tree_fits_uhwi_p (size))
- {
- warning (OPT_Wattributes, "%qs attribute ignored",
- IDENTIFIER_POINTER (name));
- return NULL_TREE;
- }
-
- /* Get the vector size (in bytes). */
- vecsize = tree_to_uhwi (size);
-
/* We need to provide for vector pointers, vector arrays, and
functions returning vectors. For example:
In this case, the mode is SI, but the type being modified is
HI, so we need to look further. */
-
while (POINTER_TYPE_P (type)
|| TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == ARRAY_TYPE)
type = TREE_TYPE (type);
- /* Get the mode of the type being modified. */
- orig_mode = TYPE_MODE (type);
-
- if ((!INTEGRAL_TYPE_P (type)
- && !SCALAR_FLOAT_TYPE_P (type)
- && !FIXED_POINT_TYPE_P (type))
- || (!SCALAR_FLOAT_MODE_P (orig_mode)
- && GET_MODE_CLASS (orig_mode) != MODE_INT
- && !ALL_SCALAR_FIXED_POINT_MODE_P (orig_mode))
- || !tree_fits_uhwi_p (TYPE_SIZE_UNIT (type))
- || TREE_CODE (type) == BOOLEAN_TYPE)
- {
- error ("invalid vector type for attribute %qs",
- IDENTIFIER_POINTER (name));
- return NULL_TREE;
- }
-
- if (vecsize % tree_to_uhwi (TYPE_SIZE_UNIT (type)))
- {
- error ("vector size not an integral multiple of component size");
- return NULL;
- }
-
- if (vecsize == 0)
- {
- error ("zero vector size");
- return NULL;
- }
-
- /* Calculate how many units fit in the vector. */
- nunits = vecsize / tree_to_uhwi (TYPE_SIZE_UNIT (type));
- if (nunits & (nunits - 1))
- {
- error ("number of components of the vector not a power of two");
- return NULL_TREE;
- }
-
- new_type = build_vector_type (type, nunits);
+ vector_type = build_vector_type_for_size (type, TREE_VALUE (args), name);
+ if (!vector_type)
+ return NULL_TREE;
/* Build back pointers if needed. */
- *node = reconstruct_complex_type (*node, new_type);
+ *node = reconstruct_complex_type (*node, vector_type);
return NULL_TREE;
}
static tree
handle_vector_type_attribute (tree *node, tree name, tree ARG_UNUSED (args),
- int ARG_UNUSED (flags),
- bool *no_add_attrs)
+ 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);
-
- /* 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;
+ tree type = *node;
+ tree vector_type;
*no_add_attrs = true;
- if (TREE_CODE (rep_type) != ARRAY_TYPE)
+ if (TREE_CODE (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 (!tree_fits_uhwi_p (rep_size))
+ vector_type = build_vector_type_for_array (type, name);
+ if (!vector_type)
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))
- || !tree_fits_uhwi_p (TYPE_SIZE_UNIT (elem_type)))
- {
- 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_to_uhwi (rep_size);
-
- if (vec_bytes % tree_to_uhwi (TYPE_SIZE_UNIT (elem_type)))
- {
- 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_to_uhwi (TYPE_SIZE_UNIT (elem_type));
- 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);
- TYPE_REPRESENTATIVE_ARRAY (*node) = rep_type;
+ TYPE_REPRESENTATIVE_ARRAY (vector_type) = type;
+ *node = vector_type;
return NULL_TREE;
}
projects / platform / upstream / linaro-gcc.git / commitdiff