bool *));
static tree handle_noreturn_attribute PARAMS ((tree *, tree, tree, int,
bool *));
+static tree handle_noinline_attribute PARAMS ((tree *, tree, tree, int,
+ bool *));
+static tree handle_used_attribute PARAMS ((tree *, tree, tree, int,
+ bool *));
static tree handle_unused_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_const_attribute PARAMS ((tree *, tree, tree, int,
static tree handle_no_instrument_function_attribute PARAMS ((tree *, tree,
tree, int,
bool *));
-static tree handle_no_check_memory_usage_attribute PARAMS ((tree *, tree, tree,
- int, bool *));
static tree handle_malloc_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_no_limit_stack_attribute PARAMS ((tree *, tree, tree, int,
bool *));
static tree handle_pure_attribute PARAMS ((tree *, tree, tree, int,
bool *));
+static tree handle_vector_size_attribute PARAMS ((tree *, tree, tree, int,
+ bool *));
+static tree vector_size_helper PARAMS ((tree, tree));
/* Table of machine-independent attributes common to all C-like languages. */
static const struct attribute_spec c_common_attribute_table[] =
handle_noreturn_attribute },
{ "volatile", 0, 0, true, false, false,
handle_noreturn_attribute },
+ { "noinline", 0, 0, true, false, false,
+ handle_noinline_attribute },
+ { "used", 0, 0, true, false, false,
+ handle_used_attribute },
{ "unused", 0, 0, false, false, false,
handle_unused_attribute },
/* The same comments as for noreturn attributes apply to const ones. */
handle_alias_attribute },
{ "no_instrument_function", 0, 0, true, false, false,
handle_no_instrument_function_attribute },
- { "no_check_memory_usage", 0, 0, true, false, false,
- handle_no_check_memory_usage_attribute },
{ "malloc", 0, 0, true, false, false,
handle_malloc_attribute },
{ "no_stack_limit", 0, 0, true, false, false,
handle_no_limit_stack_attribute },
{ "pure", 0, 0, true, false, false,
handle_pure_attribute },
+ { "vector_size", 1, 1, false, true, false,
+ handle_vector_size_attribute },
{ NULL, 0, 0, false, false, false, NULL }
};
information, in the form of a bitwise OR of flags in enum attribute_flags
from tree.h. Depending on these flags, some attributes may be
returned to be applied at a later stage (for example, to apply
- a decl attribute to the declaration rather than to its type). */
+ a decl attribute to the declaration rather than to its type). If
+ ATTR_FLAG_BUILT_IN is not set and *NODE is a DECL, then also consider
+ whether there might be some default attributes to apply to this DECL;
+ if so, decl_attributes will be called recursively with those attributes
+ and ATTR_FLAG_BUILT_IN set. */
tree
decl_attributes (node, attributes, flags)
(*targetm.insert_attributes) (*node, &attributes);
+ if (DECL_P (*node) && TREE_CODE (*node) == FUNCTION_DECL
+ && !(flags & (int) ATTR_FLAG_BUILT_IN))
+ insert_default_attributes (*node);
+
for (a = attributes; a; a = TREE_CHAIN (a))
{
tree name = TREE_PURPOSE (a);
returned_attrs = chainon ((*spec->handler) (anode, name, args,
flags, &no_add_attrs),
returned_attrs);
+
+ /* Layout the decl in case anything changed. */
+ if (spec->type_required && DECL_P (*node)
+ && TREE_CODE (*node) == VAR_DECL)
+ {
+ /* Force a recalculation of mode and size. */
+ DECL_MODE (*node) = VOIDmode;
+ DECL_SIZE (*node) = 0;
+
+ layout_decl (*node, 0);
+ }
+
if (!no_add_attrs)
{
tree old_attrs;
return NULL_TREE;
}
+/* Handle a "noinline" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_noinline_attribute (node, name, args, flags, no_add_attrs)
+ tree *node;
+ tree name;
+ tree args ATTRIBUTE_UNUSED;
+ int flags ATTRIBUTE_UNUSED;
+ bool *no_add_attrs;
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ DECL_UNINLINABLE (*node) = 1;
+ else
+ {
+ warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+
+ return NULL_TREE;
+}
+
+/* Handle a "used" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_used_attribute (node, name, args, flags, no_add_attrs)
+ tree *node;
+ tree name;
+ tree args ATTRIBUTE_UNUSED;
+ int flags ATTRIBUTE_UNUSED;
+ bool *no_add_attrs;
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (*node))
+ = TREE_USED (*node) = 1;
+ else
+ {
+ warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+
+ return NULL_TREE;
+}
+
/* Handle a "unused" attribute; arguments as in
struct attribute_spec.handler. */
return NULL_TREE;
}
-/* Handle a "no_check_memory_usage" attribute; arguments as in
- struct attribute_spec.handler. */
-
-static tree
-handle_no_check_memory_usage_attribute (node, name, args, flags, no_add_attrs)
- tree *node;
- tree name;
- tree args ATTRIBUTE_UNUSED;
- int flags ATTRIBUTE_UNUSED;
- bool *no_add_attrs;
-{
- tree decl = *node;
-
- if (TREE_CODE (decl) != FUNCTION_DECL)
- {
- error_with_decl (decl,
- "`%s' attribute applies only to functions",
- IDENTIFIER_POINTER (name));
- *no_add_attrs = true;
- }
- else if (DECL_INITIAL (decl))
- {
- error_with_decl (decl,
- "can't set `%s' attribute after definition",
- IDENTIFIER_POINTER (name));
- *no_add_attrs = true;
- }
- else
- DECL_NO_CHECK_MEMORY_USAGE (decl) = 1;
-
- return NULL_TREE;
-}
-
/* Handle a "malloc" attribute; arguments as in
struct attribute_spec.handler. */
return NULL_TREE;
}
+/* Handle a "vector_size" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_vector_size_attribute (node, name, args, flags, no_add_attrs)
+ tree *node;
+ tree name;
+ tree args;
+ int flags ATTRIBUTE_UNUSED;
+ bool *no_add_attrs;
+{
+ unsigned int vecsize, nunits;
+ enum machine_mode mode, orig_mode, new_mode;
+ tree type = *node, new_type;
+
+ *no_add_attrs = true;
+
+ if (TREE_CODE (TREE_VALUE (args)) != INTEGER_CST)
+ {
+ warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
+ return NULL_TREE;
+ }
+
+ /* Get the vector size (in bytes). */
+ vecsize = TREE_INT_CST_LOW (TREE_VALUE (args));
+
+ /* We need to provide for vector pointers, vector arrays, and
+ functions returning vectors. For example:
+
+ __attribute__((vector_size(16))) short *foo;
+
+ 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 (TREE_CODE (type) == RECORD_TYPE ||
+ (GET_MODE_CLASS (orig_mode) != MODE_FLOAT
+ && GET_MODE_CLASS (orig_mode) != MODE_INT))
+ {
+ error ("invalid vector type for attribute `%s'",
+ IDENTIFIER_POINTER (name));
+ return NULL_TREE;
+ }
+
+ /* Calculate how many units fit in the vector. */
+ nunits = vecsize / TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type));
+
+ /* Find a suitably sized vector. */
+ new_mode = VOIDmode;
+ for (mode = GET_CLASS_NARROWEST_MODE (GET_MODE_CLASS (orig_mode) == MODE_INT
+ ? MODE_VECTOR_INT
+ : MODE_VECTOR_FLOAT);
+ mode != VOIDmode;
+ mode = GET_MODE_WIDER_MODE (mode))
+ if (vecsize == GET_MODE_SIZE (mode) && nunits == GET_MODE_NUNITS (mode))
+ {
+ new_mode = mode;
+ break;
+ }
+
+ if (new_mode == VOIDmode)
+ error ("no vector mode with the size and type specified could be found");
+ else
+ {
+ new_type = type_for_mode (new_mode, TREE_UNSIGNED (type));
+ if (!new_type)
+ error ("no vector mode with the size and type specified could be found");
+ else
+ /* Build back pointers if needed. */
+ *node = vector_size_helper (*node, new_type);
+ }
+
+ return NULL_TREE;
+}
+
+/* HACK. GROSS. This is absolutely disgusting. I wish there was a
+ better way.
+
+ If we requested a pointer to a vector, build up the pointers that
+ we stripped off while looking for the inner type. Similarly for
+ return values from functions.
+
+ The argument "type" is the top of the chain, and "bottom" is the
+ new type which we will point to. */
+
+static tree
+vector_size_helper (type, bottom)
+ tree type, bottom;
+{
+ tree inner, outer;
+
+ if (POINTER_TYPE_P (type))
+ {
+ inner = vector_size_helper (TREE_TYPE (type), bottom);
+ outer = build_pointer_type (inner);
+ }
+ else if (TREE_CODE (type) == ARRAY_TYPE)
+ {
+ inner = vector_size_helper (TREE_TYPE (type), bottom);
+ outer = build_array_type (inner, TYPE_VALUES (type));
+ }
+ else if (TREE_CODE (type) == FUNCTION_TYPE)
+ {
+ inner = vector_size_helper (TREE_TYPE (type), bottom);
+ outer = build_function_type (inner, TYPE_VALUES (type));
+ }
+ else
+ return bottom;
+
+ TREE_READONLY (outer) = TREE_READONLY (type);
+ TREE_THIS_VOLATILE (outer) = TREE_THIS_VOLATILE (type);
+
+ return outer;
+}
+
/* Split SPECS_ATTRS, a list of declspecs and prefix attributes, into two
lists. SPECS_ATTRS may also be just a typespec (eg: RECORD_TYPE).
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