Summary:
There is a bug in the current lit configurations for the unittests. If gtest is not available, the site-config for the unit tests won't be generated. Because lit recurses through the test directory, the lit configuration for the unit tests will be discovered nevertheless, leading to a fatal error in lit.
This patch semi-gracefully skips the unittests if gtest is not available. As a result, running lit now prints this: `warning: test suite 'Polly-Unit' contained no test`.
If people think that this is too annoying, the alternative would be to pick apart the test directory, so that the lit testsuite discovery will always only find one configuration. In fact, both of these things could be combined. While it's certainly nice that running a single lit command runs all the tests, I suppose people use the `check-polly` make target over lit most of the time, so the difference might not be noticed.
Reviewers: Meinersbur, grosser
Reviewed By: grosser
Subscribers: mgorny, bollu, pollydev, llvm-commits
Tags: #polly
Differential Revision: https://reviews.llvm.org/D34053
llvm-svn: 307651
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
Philip Pfaffe