}
else if (TREE_CODE (args) != STRING_CST)
- gcc_unreachable ();
+ {
+ error ("attribute %<target%> argument not a string");
+ return false;
+ }
/* Handle multiple arguments separated by commas. */
next_optstr = ASTRDUP (TREE_STRING_POINTER (args));
/* Process each of the options on the chain. */
if (! ix86_valid_target_attribute_inner_p (args, option_strings,
&enum_opts_set))
- return NULL_TREE;
+ return error_mark_node;
/* If the changed options are different from the default, rerun
ix86_option_override_internal, and then save the options away.
{
struct cl_target_option cur_target;
bool ret = true;
+
+ /* attribute((target("default"))) does nothing, beyond
+ affecting multi-versioning. */
+ if (TREE_VALUE (args)
+ && TREE_CODE (TREE_VALUE (args)) == STRING_CST
+ && TREE_CHAIN (args) == NULL_TREE
+ && strcmp (TREE_STRING_POINTER (TREE_VALUE (args)), "default") == 0)
+ return true;
+
tree old_optimize = build_optimization_node ();
tree new_target, new_optimize;
tree func_optimize = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (fndecl);
new_target = ix86_valid_target_attribute_tree (args);
new_optimize = build_optimization_node ();
- if (!new_target)
+ if (new_target == error_mark_node)
ret = false;
- else if (fndecl)
+ else if (fndecl && new_target)
{
DECL_FUNCTION_SPECIFIC_TARGET (fndecl) = new_target;
return strcmp (c1, c2);
}
-/* STR is the argument to target attribute. This function tokenizes
+/* ARGLIST is the argument to target attribute. This function tokenizes
the comma separated arguments, sorts them and returns a string which
is a unique identifier for the comma separated arguments. It also
replaces non-identifier characters "=,-" with "_". */
static char *
-sorted_attr_string (const char *str)
+sorted_attr_string (tree arglist)
{
+ tree arg;
+ size_t str_len_sum = 0;
char **args = NULL;
char *attr_str, *ret_str;
char *attr = NULL;
unsigned int argnum = 1;
unsigned int i;
- for (i = 0; i < strlen (str); i++)
- if (str[i] == ',')
- argnum++;
+ for (arg = arglist; arg; arg = TREE_CHAIN (arg))
+ {
+ const char *str = TREE_STRING_POINTER (TREE_VALUE (arg));
+ size_t len = strlen (str);
+ str_len_sum += len + 1;
+ if (arg != arglist)
+ argnum++;
+ for (i = 0; i < strlen (str); i++)
+ if (str[i] == ',')
+ argnum++;
+ }
- attr_str = (char *)xmalloc (strlen (str) + 1);
- strcpy (attr_str, str);
+ attr_str = XNEWVEC (char, str_len_sum);
+ str_len_sum = 0;
+ for (arg = arglist; arg; arg = TREE_CHAIN (arg))
+ {
+ const char *str = TREE_STRING_POINTER (TREE_VALUE (arg));
+ size_t len = strlen (str);
+ memcpy (attr_str + str_len_sum, str, len);
+ attr_str[str_len_sum + len] = TREE_CHAIN (arg) ? ',' : '\0';
+ str_len_sum += len + 1;
+ }
/* Replace "=,-" with "_". */
for (i = 0; i < strlen (attr_str); i++)
attr = strtok (NULL, ",");
}
- qsort (args, argnum, sizeof (char*), attr_strcmp);
+ qsort (args, argnum, sizeof (char *), attr_strcmp);
- ret_str = (char *)xmalloc (strlen (str) + 1);
- strcpy (ret_str, args[0]);
- for (i = 1; i < argnum; i++)
+ ret_str = XNEWVEC (char, str_len_sum);
+ str_len_sum = 0;
+ for (i = 0; i < argnum; i++)
{
- strcat (ret_str, "_");
- strcat (ret_str, args[i]);
+ size_t len = strlen (args[i]);
+ memcpy (ret_str + str_len_sum, args[i], len);
+ ret_str[str_len_sum + len] = i < argnum - 1 ? '_' : '\0';
+ str_len_sum += len + 1;
}
- free (args);
- free (attr_str);
+ XDELETEVEC (args);
+ XDELETEVEC (attr_str);
return ret_str;
}
ix86_mangle_function_version_assembler_name (tree decl, tree id)
{
tree version_attr;
- const char *orig_name, *version_string, *attr_str;
- char *assembler_name;
+ const char *orig_name, *version_string;
+ char *attr_str, *assembler_name;
if (DECL_DECLARED_INLINE_P (decl)
&& lookup_attribute ("gnu_inline",
version_string
= TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (version_attr)));
- attr_str = sorted_attr_string (version_string);
- assembler_name = (char *) xmalloc (strlen (orig_name)
- + strlen (attr_str) + 2);
+ if (strcmp (version_string, "default") == 0)
+ return id;
+
+ attr_str = sorted_attr_string (TREE_VALUE (version_attr));
+ assembler_name = XNEWVEC (char, strlen (orig_name) + strlen (attr_str) + 2);
sprintf (assembler_name, "%s.%s", orig_name, attr_str);
if (DECL_ASSEMBLER_NAME_SET_P (decl))
SET_DECL_RTL (decl, NULL);
- return get_identifier (assembler_name);
+ tree ret = get_identifier (assembler_name);
+ XDELETEVEC (attr_str);
+ XDELETEVEC (assembler_name);
+ return ret;
}
/* This function returns true if FN1 and FN2 are versions of the same function,
ix86_function_versions (tree fn1, tree fn2)
{
tree attr1, attr2;
- const char *attr_str1, *attr_str2;
char *target1, *target2;
bool result;
-
+
if (TREE_CODE (fn1) != FUNCTION_DECL
|| TREE_CODE (fn2) != FUNCTION_DECL)
return false;
if (attr1 == NULL_TREE && attr2 == NULL_TREE)
return false;
- /* If one function does not have a target attribute, these are versions. */
+ /* Diagnose missing target attribute if one of the decls is already
+ multi-versioned. */
if (attr1 == NULL_TREE || attr2 == NULL_TREE)
- return true;
-
- attr_str1 = TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr1)));
- attr_str2 = TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr2)));
+ {
+ if (DECL_FUNCTION_VERSIONED (fn1) || DECL_FUNCTION_VERSIONED (fn2))
+ {
+ if (attr2 != NULL_TREE)
+ {
+ tree tem = fn1;
+ fn1 = fn2;
+ fn2 = tem;
+ attr1 = attr2;
+ }
+ error_at (DECL_SOURCE_LOCATION (fn2),
+ "missing %<target%> attribute for multi-versioned %D",
+ fn2);
+ error_at (DECL_SOURCE_LOCATION (fn1),
+ "previous declaration of %D", fn1);
+ /* Prevent diagnosing of the same error multiple times. */
+ DECL_ATTRIBUTES (fn2)
+ = tree_cons (get_identifier ("target"),
+ copy_node (TREE_VALUE (attr1)),
+ DECL_ATTRIBUTES (fn2));
+ }
+ return false;
+ }
- target1 = sorted_attr_string (attr_str1);
- target2 = sorted_attr_string (attr_str2);
+ target1 = sorted_attr_string (TREE_VALUE (attr1));
+ target2 = sorted_attr_string (TREE_VALUE (attr2));
/* The sorted target strings must be different for fn1 and fn2
to be versions. */
else
result = true;
- free (target1);
- free (target2);
+ XDELETEVEC (target1);
+ XDELETEVEC (target2);
return result;
}
-/* This target supports function multiversioning. */
-
-static bool
-ix86_supports_function_versions (void)
-{
- return true;
-}
-
static tree
ix86_mangle_decl_assembler_name (tree decl, tree id)
{
/* Use '.' to concatenate names as it is demangler friendly. */
if (make_unique)
- snprintf (global_var_name, name_len, "%s.%s.%s", name,
- unique_name, suffix);
+ snprintf (global_var_name, name_len, "%s.%s.%s", name, unique_name,
+ suffix);
else
- snprintf (global_var_name, name_len, "%s.%s", name, suffix);
+ snprintf (global_var_name, name_len, "%s.%s", name, suffix);
return global_var_name;
}
make_dispatcher_decl (const tree decl)
{
tree func_decl;
- char *func_name, *resolver_name;
+ char *func_name;
tree fn_type, func_type;
bool is_uniq = false;
is_uniq = true;
func_name = make_name (decl, "ifunc", is_uniq);
- resolver_name = make_name (decl, "resolver", is_uniq);
- gcc_assert (resolver_name);
fn_type = TREE_TYPE (decl);
func_type = build_function_type (TREE_TYPE (fn_type),
TYPE_ARG_TYPES (fn_type));
func_decl = build_fn_decl (func_name, func_type);
+ XDELETEVEC (func_name);
TREE_USED (func_decl) = 1;
DECL_CONTEXT (func_decl) = NULL_TREE;
DECL_INITIAL (func_decl) = error_mark_node;
static bool
is_function_default_version (const tree decl)
{
- return (TREE_CODE (decl) == FUNCTION_DECL
- && DECL_FUNCTION_VERSIONED (decl)
- && lookup_attribute ("target", DECL_ATTRIBUTES (decl)) == NULL_TREE);
+ if (TREE_CODE (decl) != FUNCTION_DECL
+ || !DECL_FUNCTION_VERSIONED (decl))
+ return false;
+ tree attr = lookup_attribute ("target", DECL_ATTRIBUTES (decl));
+ gcc_assert (attr);
+ attr = TREE_VALUE (TREE_VALUE (attr));
+ return (TREE_CODE (attr) == STRING_CST
+ && strcmp (TREE_STRING_POINTER (attr), "default") == 0);
}
/* Make a dispatcher declaration for the multi-versioned function DECL.
/* Create the alias for dispatch to resolver here. */
/*cgraph_create_function_alias (dispatch_decl, decl);*/
cgraph_same_body_alias (NULL, dispatch_decl, decl);
+ XDELETEVEC (resolver_name);
return decl;
}
}
dispatch_function_versions (resolver_decl, &fn_ver_vec, &empty_bb);
-
+ fn_ver_vec.release ();
rebuild_cgraph_edges ();
pop_cfun ();
return resolver_decl;
#undef TARGET_OPTION_FUNCTION_VERSIONS
#define TARGET_OPTION_FUNCTION_VERSIONS ix86_function_versions
-#undef TARGET_OPTION_SUPPORTS_FUNCTION_VERSIONS
-#define TARGET_OPTION_SUPPORTS_FUNCTION_VERSIONS \
- ix86_supports_function_versions
-
#undef TARGET_CAN_INLINE_P
#define TARGET_CAN_INLINE_P ix86_can_inline_p
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