* builtins.c (expand_builtin_int_roundingfn): Handle
BUILT_IN_LCEIL{,F,L} and BUILT_IN_LLCEIL{,F,L}.
(fold_builtin_int_roundingfn): Handle BUILT_IN_LCEIL{,F,L} and
BUILT_IN_LLCEIL{,F,L}.
(fold_builtin_1): Fold BUILT_IN_LCEIL{,F,L} and
BUILT_IN_LLCEIL{,F,L} using fold_builtin_int_roundingfn.
(mathfn_built_in): Handle BUILT_IN LCEIL and BUILT_IN_LLCEIL.
(expand_builtin): Expand BUILT_IN_LCEIL{,F,L} and
BUILT_IN_LLCEIL{,F,L} using expand_builtin_int_roundingfn.
* convert.c (convert_to_integer): Convert (long int)ceil{,f,l},
into lceil built-in function and (long long int)ceil{,f,l} into
llceil built-in function.
* fold-const.c (tree_expr_nonnegative_p): Add BUILT_IN_LCEIL and
BUILT_IN_LLCEIL.
testsuite:
* gcc.dg/builtins-53.c: Also check (int)ceil* and
(long long int)ceil*.