Minor pass-sensitivity improvement:
  if we know that 'len != 0' and know that 'i == 0' then we know that
  'i < len' must evaluate to true and cannot evaluate to false


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56260 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed