DCE SimplifyAlwaysThrowing optimizations am: 298112a02c

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

Change-Id: I936fbe2c9c02a87e6080816668ae399c5bfe3db7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>