Summary:
This patch adds support for some operations that were missing from
128-bit integer types (add/sub/mul/sdiv/udiv... etc.). With these
changes we can support the __int128_t and __uint128_t data types
from C/C++.
Depends on D7125
Reviewers: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D7143
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227089 91177308-0d34-0410-b5e6-96231b3b80d8