[all-commits] [llvm/llvm-project] 6c097f: [Test] Add more tests demonstrating oddities in be...

[max-azul via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6c097f73ca032e73b2eb4ec21ee9d0773c86d4ed
      https://github.com/llvm/llvm-project/commit/6c097f73ca032e73b2eb4ec21ee9d0773c86d4ed
  Author: Max Kazantsev <mkazantsev at azul.com>
  Date:   2021-02-05 (Fri, 05 Feb 2021)

  Changed paths:
    M llvm/test/CodeGen/X86/2020_12_02_decrementing_loop.ll
    A llvm/test/Transforms/LoopStrengthReduce/post-increment-insertion.ll

  Log Message:
  -----------
  [Test] Add more tests demonstrating oddities in behavior of LSR

These tests demonstrate that LSR does not insert IV increment
into the latch block (as it supposes to) when it can use an
existing Phi as IV rather than creating a new LSR IV.