IslCodegen: Support for run-time conditions

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@194948 91177308-0d34-0410-b5e6-96231b3b80d8
Fix 80 column violation

Found by clang-format.

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@194949 91177308-0d34-0410-b5e6-96231b3b80d8