* builtins.c (expand_builtin_strcat, expand_builtin_strncat,
expand_builtin_strspn, expand_builtin_strcspn): New functions.
(expand_builtin): Handle BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN and BUILT_IN_STRCSPN.
* builtins.def (BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN, BUILT_IN_STRCSPN): New entries.
* c-common.c (c_common_nodes_and_builtins): Declare builtin
strcat, strncat, strspn and strcspn.
(string_ftype_string_cstring): Renamed from `string_ftype_ptr_ptr'.
* extend.texi (strcat, strcspn, strncat, strspn): Document new
builtins.
testsuite:
* gcc.c-torture/execute/string-opt-9.c: New test.
* gcc.c-torture/execute/string-opt-10.c: Likewise.
* gcc.c-torture/execute/string-opt-11.c: Likewise.
* gcc.c-torture/execute/string-opt-12.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37964
138bc75d-0d04-0410-961f-
82ee72b054a4