Add phis in SimplifyIfs to enable branch redirection am: 10d6870ae4 am: 2cedcc3b6c

Original change: https://android-review.googlesource.com/c/platform/art/+/2399027

Change-Id: Ib8a358f05870ed1d8f411806e58e5faa9adf3108
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>