Rafael Espindola e04c0e3f8d Revert "InstCombine: Improvement to check if signed addition overflows."
This reverts commit r209746.

It looks it is causing a crash while building libcxx. I am trying to get a
reduced testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209762 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-28 18:48:10 +00:00
..