Hello!
Attached patch handles "*tm regparm" attribute, to avoid "*tm regparm"
attribute ignored warnings in lto compile on non-x86 targets.
2011-11-30 Uros Bizjak <ubiz...@gmail.com>
* lto-lang.c (lto_attribute_table): Handle *tm regparm.
(ignore_attribute): New.
Tested on alphaev68-pc-linux-gnu and x86_64-pc-linux-gnu {,-m32}.
OK for mainline?
Uros.
Index: lto-lang.c
===================================================================
--- lto-lang.c (revision 181835)
+++ lto-lang.c (working copy)
@@ -47,6 +47,8 @@
static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool
*);
+static tree ignore_attribute (tree *, tree, tree, int, bool *);
+
static tree handle_format_attribute (tree *, tree, tree, int, bool *);
static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
@@ -78,6 +80,10 @@
handle_type_generic_attribute, false },
{ "transaction_pure", 0, 0, false, true, true,
handle_transaction_pure_attribute, false },
+ /* For internal use only. The leading '*' both prevents its usage in
+ source code and signals that it may be overridden by machine tables. */
+ { "*tm regparm", 0, 0, false, true, true,
+ ignore_attribute, false },
{ NULL, 0, 0, false, false, false, NULL, false }
};
@@ -419,6 +425,18 @@
return NULL_TREE;
}
+/* Ignore the given attribute. Used when this attribute may be usefully
+ overridden by the target, but is not used generically. */
+
+static tree
+ignore_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *no_add_attrs)
+{
+ *no_add_attrs = true;
+ return NULL_TREE;
+}
+
/* Handle a "format" attribute; arguments as in
struct attribute_spec.handler. */
