Unify simplification passes after high-level optimizations am: ec45c7711c

Original change: https://android-review.googlesource.com/c/platform/art/+/2419206

Change-Id: I3acebc1d6849c1e0b5d7c7161b3a8da9d0439d38
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>