diff options
Diffstat (limited to 'gcc/lto/lto-lang.c')
| -rw-r--r-- | gcc/lto/lto-lang.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/gcc/lto/lto-lang.c b/gcc/lto/lto-lang.c index 0d230eeddca..d255e65d26d 100644 --- a/gcc/lto/lto-lang.c +++ b/gcc/lto/lto-lang.c @@ -1,5 +1,5 @@ /* Language-dependent hooks for LTO. - Copyright 2009, 2010 Free Software Foundation, Inc. + Copyright 2009, 2010, 2011, 2012 Free Software Foundation, Inc. Contributed by CodeSourcery, Inc. This file is part of GCC. @@ -47,6 +47,7 @@ static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *); 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 handle_returns_twice_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 *); @@ -74,6 +75,8 @@ const struct attribute_spec lto_attribute_table[] = handle_nonnull_attribute, false }, { "nothrow", 0, 0, true, false, false, handle_nothrow_attribute, false }, + { "returns_twice", 0, 0, true, false, false, + handle_returns_twice_attribute, false }, { "sentinel", 0, 1, false, true, true, handle_sentinel_attribute, false }, { "type generic", 0, 0, false, true, true, @@ -425,6 +428,21 @@ handle_transaction_pure_attribute (tree *node, tree ARG_UNUSED (name), return NULL_TREE; } +/* Handle a "returns_twice" attribute. */ + +static tree +handle_returns_twice_attribute (tree *node, tree ARG_UNUSED (name), + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool * ARG_UNUSED (no_add_attrs)) +{ + gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); + + DECL_IS_RETURNS_TWICE (*node) = 1; + + return NULL_TREE; +} + /* Ignore the given attribute. Used when this attribute may be usefully overridden by the target, but is not used generically. */ |