[all-commits] [llvm/llvm-project] 5ba115: [PSE] Remove assumption that top level predicate i...

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5ba115031dd773780cafc8ade0140883473b8cee
      https://github.com/llvm/llvm-project/commit/5ba115031dd773780cafc8ade0140883473b8cee
  Author: Philip Reames <listmail at philipreames.com>
  Date:   2022-02-10 (Thu, 10 Feb 2022)

  Changed paths:
    M llvm/include/llvm/Analysis/ScalarEvolution.h
    M llvm/include/llvm/Transforms/Utils/LoopVersioning.h
    M llvm/lib/Analysis/LoopAccessAnalysis.cpp
    M llvm/lib/Analysis/ScalarEvolution.cpp
    M llvm/lib/Transforms/Scalar/LoopDistribute.cpp
    M llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
    M llvm/lib/Transforms/Utils/LoopVersioning.cpp
    M llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

  Log Message:
  -----------
  [PSE] Remove assumption that top level predicate is union from public interface [NFC*]

Note that this doesn't actually cause the top level predicate to become a non-union just yet.

The * above comes from a case in the LoopVectorizer where a predicate which is later proven no longer blocks vectorization due to a change from checking if predicates exists to whether the predicate is possibly false.