Turn off execution of tests that use UNIX-specific features. Reviewed By: Amir Differential Revision: https://reviews.llvm.org/D126933
- Fix common (arch-independent) tests to explicitly target -linux triple. - Override the triple inside arch-specific tests. - Add cflags to common tests. - Update individual tests. - Expand pipe stderr `|&` shorthand. Reviewed By: rafauler Differential Revision: https://reviews.llvm.org/D125548
Some of the tests are not x86-specific, move them to common directory. Differential Revision: https://reviews.llvm.org/D121261