From 9c30beaeb228b63447793235570fc207831dd885 Mon Sep 17 00:00:00 2001
From: Joachim Meyer <joachim@joameyer.de>
Date: Fri, 24 Sep 2021 12:01:02 +0200
Subject: [PATCH] [NFC] Mark LI.getLoopsInPreorder and
 LI.getLoopsInReverseSiblingPreorder const.

They create a new vector with the list, so they can be const.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D110394
---
 llvm/include/llvm/Analysis/LoopInfo.h     | 4 ++--
 llvm/include/llvm/Analysis/LoopInfoImpl.h | 5 +++--
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/llvm/include/llvm/Analysis/LoopInfo.h b/llvm/include/llvm/Analysis/LoopInfo.h
index ece37dc..15c9d91 100644
--- a/llvm/include/llvm/Analysis/LoopInfo.h
+++ b/llvm/include/llvm/Analysis/LoopInfo.h
@@ -950,7 +950,7 @@ public:
   ///
   /// Note that because loops form a forest of trees, preorder is equivalent to
   /// reverse postorder.
-  SmallVector<LoopT *, 4> getLoopsInPreorder();
+  SmallVector<LoopT *, 4> getLoopsInPreorder() const;
 
   /// Return all of the loops in the function in preorder across the loop
   /// nests, with siblings in *reverse* program order.
@@ -960,7 +960,7 @@ public:
   ///
   /// Also note that this is *not* a reverse preorder. Only the siblings are in
   /// reverse program order.
-  SmallVector<LoopT *, 4> getLoopsInReverseSiblingPreorder();
+  SmallVector<LoopT *, 4> getLoopsInReverseSiblingPreorder() const;
 
   /// Return the inner most loop that BB lives in. If a basic block is in no
   /// loop (for example the entry node), null is returned.
diff --git a/llvm/include/llvm/Analysis/LoopInfoImpl.h b/llvm/include/llvm/Analysis/LoopInfoImpl.h
index 2cc9afb..b8b8330 100644
--- a/llvm/include/llvm/Analysis/LoopInfoImpl.h
+++ b/llvm/include/llvm/Analysis/LoopInfoImpl.h
@@ -574,7 +574,8 @@ void LoopInfoBase<BlockT, LoopT>::analyze(const DomTreeBase<BlockT> &DomTree) {
 }
 
 template <class BlockT, class LoopT>
-SmallVector<LoopT *, 4> LoopInfoBase<BlockT, LoopT>::getLoopsInPreorder() {
+SmallVector<LoopT *, 4>
+LoopInfoBase<BlockT, LoopT>::getLoopsInPreorder() const {
   SmallVector<LoopT *, 4> PreOrderLoops, PreOrderWorklist;
   // The outer-most loop actually goes into the result in the same relative
   // order as we walk it. But LoopInfo stores the top level loops in reverse
@@ -592,7 +593,7 @@ SmallVector<LoopT *, 4> LoopInfoBase<BlockT, LoopT>::getLoopsInPreorder() {
 
 template <class BlockT, class LoopT>
 SmallVector<LoopT *, 4>
-LoopInfoBase<BlockT, LoopT>::getLoopsInReverseSiblingPreorder() {
+LoopInfoBase<BlockT, LoopT>::getLoopsInReverseSiblingPreorder() const {
   SmallVector<LoopT *, 4> PreOrderLoops, PreOrderWorklist;
   // The outer-most loop actually goes into the result in the same relative
   // order as we walk it. LoopInfo stores the top level loops in reverse
-- 
2.7.4