[all-commits] [llvm/llvm-project] 942c99: [Loop] Add isRotated method to Loop class.

[Kit Barton via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 942c9946cc2fba6acd3805cfeaca90007f532f1f
      https://github.com/llvm/llvm-project/commit/942c9946cc2fba6acd3805cfeaca90007f532f1f
  Author: Kit Barton <kbarton at ca.ibm.com>
  Date:   2019-12-11 (Wed, 11 Dec 2019)

  Changed paths:
    M llvm/include/llvm/Analysis/LoopInfo.h
    M llvm/lib/Analysis/LoopInfo.cpp
    M llvm/unittests/Analysis/LoopInfoTest.cpp

  Log Message:
  -----------
  [Loop] Add isRotated method to Loop class.

Summary:
This patch adds a method to determine if a loop is in rotated form (the latch is
an exiting block). It also modifies the getLoopGuardBranch method to use this
new method. This method can also be used in Loopfusion. Once this patch lands I
will make the corresponding changes there.

Reviewers: jdoerfert, Meinersbur, dmgreen, etiotto, Whitney, fhahn, hfinkel

Reviewed By: Meinersbur

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65958