[all-commits] [llvm/llvm-project] fa6a28: [LoopInterchange] Enable interchange with multiple...

[CongzheUalberta via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fa6a2876c7e43fbb37c076dcf80ffe1ac22e49fc
      https://github.com/llvm/llvm-project/commit/fa6a2876c7e43fbb37c076dcf80ffe1ac22e49fc
  Author: Congzhe Cao <congzhe.cao at huawei.com>
  Date:   2022-01-14 (Fri, 14 Jan 2022)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LoopInterchange.cpp
    A llvm/test/Transforms/LoopInterchange/interchangeable-innerloop-multiple-indvars.ll

  Log Message:
  -----------
  [LoopInterchange] Enable interchange with multiple inner loop indvars

Currently loop interchange only supports loops with one inner loop
induction variable. This patch adds support for transformation with
more than one inner loop induction variables. The induction PHIs and
induction increment instructions are moved/duplicated properly to the
new outer header and the new outer latch, respectively.

Reviewed By: bmahjour

Differential Revision: https://reviews.llvm.org/D114917