[all-commits] [llvm/llvm-project] c00551: [LoopNest] Allow empty basic blocks without loops

[whitneywhtsang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c00551893674d6d61e9e5d68412e2b8621f617b8
      https://github.com/llvm/llvm-project/commit/c00551893674d6d61e9e5d68412e2b8621f617b8
  Author: Whitney Tsang <whitneyt at ca.ibm.com>
  Date:   2021-01-05 (Tue, 05 Jan 2021)

  Changed paths:
    M llvm/include/llvm/Analysis/LoopNestAnalysis.h
    M llvm/lib/Analysis/LoopNestAnalysis.cpp
    M llvm/test/Analysis/LoopNestAnalysis/perfectnest.ll

  Log Message:
  -----------
  [LoopNest] Allow empty basic blocks without loops

Allow loop nests with empty basic blocks without loops in different
levels as perfect.

Reviewers: Meinersbur

Differential Revision: https://reviews.llvm.org/D93665