1. [MemorySSA] Clean up single value phis. (details)
Commit 63844c116a0acf8a75ebe4ed6f25fced3c655710 by asbirlea
[MemorySSA] Clean up single value phis.

MemoryPhis with a single value are correct, but can lead to errors when
updating. Clean up single entry Phis newly added when cloning blocks.
Resolves PR46574.
The file was addedllvm/test/Analysis/MemorySSA/pr46574.ll
The file was modifiedllvm/lib/Analysis/MemorySSAUpdater.cpp (diff)