Alina Sbirlea 890090f7f5 [MemorySSA] Check for unreachable blocks when getting last definition.
If a single predecessor is found, still check if the block is
unreachable. The test that found this had a self loop unreachable block.
Resolves PR43493.

llvm-svn: 373383
2019-10-01 19:09:50 +00:00
..
2019-09-18 17:43:45 +00:00