From 746addd2616286d265e90862e5b8542c20385f3d Mon Sep 17 00:00:00 2001
From: Sanjoy Das <sanjoy@playingwithpointers.com>
Date: Sun, 29 May 2016 04:08:50 +0000
Subject: [PATCH] Revert "[SCEV] Remove unused function; NFC"

This reverts commit r271155.  The `apply` function is actually used by
Polly.

llvm-svn: 271167
---
 llvm/include/llvm/Analysis/ScalarEvolutionExpressions.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/llvm/include/llvm/Analysis/ScalarEvolutionExpressions.h b/llvm/include/llvm/Analysis/ScalarEvolutionExpressions.h
index a658b808e903..dfb25f444242 100644
--- a/llvm/include/llvm/Analysis/ScalarEvolutionExpressions.h
+++ b/llvm/include/llvm/Analysis/ScalarEvolutionExpressions.h
@@ -680,6 +680,13 @@ namespace llvm {
   private:
     LoopToScevMapT &Map;
   };
+
+/// Applies the Map (Loop -> SCEV) to the given Scev.
+static inline const SCEV *apply(const SCEV *Scev, LoopToScevMapT &Map,
+                                ScalarEvolution &SE) {
+  return SCEVLoopAddRecRewriter::rewrite(Scev, Map, SE);
+}
+
 }
 
 #endif