Add some more tests. Original-commit: flang-compiler/f18@e65f755fe1 Reviewed-on: https://github.com/flang-compiler/f18/pull/196 Tree-same-pre-rewrite: false
Added a negative test, to check that semantics are not applied bogusly to loops that are not DO CONCURRENT. Original-commit: flang-compiler/f18@d8de45e994 Reviewed-on: https://github.com/flang-compiler/f18/pull/196 Tree-same-pre-rewrite: false