--- a/include/llvm/Transforms/Scalar/AlignmentFromAssumptions.h	Sat Feb 17 09:57:20 2018 +0900
+++ b/include/llvm/Transforms/Scalar/AlignmentFromAssumptions.h	Wed Aug 14 16:55:33 2019 +0900
@@ -1,9 +1,8 @@
 //===---- AlignmentFromAssumptions.h ----------------------------*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
@@ -33,12 +32,6 @@
   bool runImpl(Function &F, AssumptionCache &AC, ScalarEvolution *SE_,
                DominatorTree *DT_);
 
-  // For memory transfers, we need a common alignment for both the source and
-  // destination. If we have a new alignment for only one operand of a transfer
-  // instruction, save it in these maps.  If we reach the other operand through
-  // another assumption later, then we may change the alignment at that point.
-  DenseMap<MemTransferInst *, unsigned> NewDestAlignments, NewSrcAlignments;
-
   ScalarEvolution *SE = nullptr;
   DominatorTree *DT = nullptr;