[all-commits] [llvm/llvm-project] 63844c: [MemorySSA] Clean up single value phis.

[Alina Sbirlea via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 63844c116a0acf8a75ebe4ed6f25fced3c655710
      https://github.com/llvm/llvm-project/commit/63844c116a0acf8a75ebe4ed6f25fced3c655710
  Author: Alina Sbirlea <asbirlea at google.com>
  Date:   2020-08-31 (Mon, 31 Aug 2020)

  Changed paths:
    M llvm/lib/Analysis/MemorySSAUpdater.cpp
    A llvm/test/Analysis/MemorySSA/pr46574.ll

  Log Message:
  -----------
  [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.