Only build them for check-polly and check-polly-unittests in out-of-tree builds.
In LLVM, this behaviour is controlled with LLVM_BUILD_TESTS. Polly out-of-tree
does not have such a flag.
llvm-svn: 279740
Add the infrastructure for unittests to Polly and two simple tests for
conversion between isl_val and APInt. In addition, a build target
check-polly-unittests is added to run only the unittests but not the regression
tests.
Clang's unittest mechanism served as as a blueprint which then was adapted to
Polly.
Differential Revision: https://reviews.llvm.org/D23833
llvm-svn: 279734