correct the delinearization failing case

collect terms from affine and non affine memory accesses

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@208616 91177308-0d34-0410-b5e6-96231b3b80d8
do not build llc and lli for polly test

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@208619 91177308-0d34-0410-b5e6-96231b3b80d8