DCE SimplifyAlwaysThrowing optimizations am: 298112a02c am: 936e0e9d00 am: 61c646f8f2

Original change: https://android-review.googlesource.com/c/platform/art/+/2047843

Change-Id: Ib5f4843701149cfc36f7d5b575cb5810fd4fcb48
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>