From 4ce3f8eb03fa32f799d523df30b4241879b71534 Mon Sep 17 00:00:00 2001
From: Alina Sbirlea <asbirlea@google.com>
Date: Thu, 23 Aug 2018 21:56:30 +0000
Subject: [PATCH] [IDF] Make GraphDiff a const constructor argument.

llvm-svn: 340581
---
 include/llvm/Analysis/IteratedDominanceFrontier.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/llvm/Analysis/IteratedDominanceFrontier.h b/include/llvm/Analysis/IteratedDominanceFrontier.h
index e09c6aacfc0..fdebb1bc396 100644
--- a/include/llvm/Analysis/IteratedDominanceFrontier.h
+++ b/include/llvm/Analysis/IteratedDominanceFrontier.h
@@ -50,7 +50,7 @@ class IDFCalculator {
        : DT(DT), GD(nullptr), useLiveIn(false) {}
 
    IDFCalculator(DominatorTreeBase<BasicBlock, IsPostDom> &DT,
-                 GraphDiff<BasicBlock *, IsPostDom> *GD)
+                 const GraphDiff<BasicBlock *, IsPostDom> *GD)
        : DT(DT), GD(GD), useLiveIn(false) {}
 
    /// Give the IDF calculator the set of blocks in which the value is