This reverts commit 7cd273c339cfe8427404f881ae280bd9fae6ff78.
Several patches with tests fixes have been applied:
0cada82f0a30e5ae22dce66b58604ab9b47a3897 "[Test] Remove incorrect test in GVN"
97cb13615d6d9df254e3c0f3deef9eaedfe189b6 "[Test] Separate IndVars test into AArch64 and X86 parts"
985cc490f17d28b20392ee214895d947b85120ef "[Test] Remove separated test in IndVars",
and test failures caused by 5ec2386 should be resolved now.