[PATCH] D83094: Analysis: Add a GenericCycleInfo analysis

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle created this revision.
nhaehnle added reviewers: arsenm, RKSimon, mehdi_amini, courbet.
Herald added subscribers: hiraditya, mgorny, wdng.
Herald added a project: LLVM.
nhaehnle added a parent revision: D83093: DomTree: Define GraphTraits for GenericDomTreeBase.

This analysis allows algorithms to capture all loops, including irreducible
loops, in a structured way. Based on Havlak (1997), Nesting of Reducible and
Irreducible Loops. See the definition of a "cycle" in the header file and
the IR test cases for more detail.

This patch also immediately adds (new and old-style) IR function passes.

Change-Id: I91f0d001d18906126961dc4aa2f8727ad4aff87c


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83094

Files:
  llvm/include/llvm/Analysis/CycleInfo.h
  llvm/include/llvm/Analysis/GenericCycleInfo.h
  llvm/include/llvm/InitializePasses.h
  llvm/lib/Analysis/Analysis.cpp
  llvm/lib/Analysis/CMakeLists.txt
  llvm/lib/Analysis/CycleInfo.cpp
  llvm/lib/Analysis/GenericCycleInfo.cpp
  llvm/lib/Passes/PassBuilder.cpp
  llvm/lib/Passes/PassRegistry.def
  llvm/test/Analysis/CycleInfo/basic.ll

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