Convert an ownership comment with std::uinque_ptr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215855 91177308-0d34-0410-b5e6-96231b3b80d8
Return a std::uinque_ptr. Every caller was already using one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215858 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unused member variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215860 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: whitespace

Whitespace fix, NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215861 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: improve RTABI 4.2 conformance on Linux

The set of functions defined in the RTABI was separated for no real reason.
This brings us closer to proper utilisation of the functions defined by the
RTABI.  It also sets the ground for correctly emitting function calls to AEABI
functions on all AEABI conforming platforms.

The previously existing lie on the behaviour of __ldivmod and __uldivmod is
propagated as it is beyond the scope of the change.

The changes to the test are due to the fact that we now use the divmod functions
which return both the quotient and remainder and thus we no longer need to
invoke two functions on Linux (making it closer to EABI's behaviour).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215862 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: mark missing functions from RTABI

Simply indicate the functions that are part of the runtime library that we do
not setup libcalls for.  This is merely for ease of identification.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215863 91177308-0d34-0410-b5e6-96231b3b80d8