Add the missing "n" to libm LIBBUILTIN definitions

The libm math functions should be marked with the "n" (nothrow) flag so that
the corresponding IR function declarations are tagged with the nounwind
attribute (this has been true in C mode, but not in C++ mode).

The test case has been updated to run in C++ mode in addition to in C mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190217 91177308-0d34-0410-b5e6-96231b3b80d8
Reorder libm LIBBUILTIN definitions

The libm LIBBUILTIN definitions are reordered to the canonical (and
alphabetical) double (''), float ('f'), long double ('l') ordering.

No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190218 91177308-0d34-0410-b5e6-96231b3b80d8
Reorder libm LIBBUILTIN definition groups

The groups of libm LIBBUILTIN definitions are reordered to match the order of
the corresponding __builtin_* definitions (which occur earlier in the
Builtins.def file).

No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190222 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC migrator: When inferring a property,
preserve getter's attribute. Also, do not attach
an inferred NS_RETURNS_INNER_POINTER to the inferred
property (it is illegal).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190223 91177308-0d34-0410-b5e6-96231b3b80d8