From 722a3a58e277b7f5103e95b6cfe116ef8d2f121b Mon Sep 17 00:00:00 2001
From: Mehdi Amini <joker.eph@gmail.com>
Date: Sat, 16 Apr 2022 07:43:24 +0000
Subject: [PATCH] Apply clang-tidy fixes for performance-for-range-copy in
 MemRefOps.cpp (NFC)

---
 mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp b/mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp
index 9e1010d4896d..9a2ebc586daf 100644
--- a/mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp
+++ b/mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp
@@ -1833,7 +1833,7 @@ computeCollapsedLayoutMap(MemRefType srcType,
 
   // Validate that each reassociation group is contiguous.
   unsigned resultStrideIndex = resultStrides.size() - 1;
-  for (ReassociationIndices reassoc : llvm::reverse(reassociation)) {
+  for (const ReassociationIndices &reassoc : llvm::reverse(reassociation)) {
     auto trailingReassocs = ArrayRef<int64_t>(reassoc).drop_front();
     using saturated_arith::Wrapper;
     auto stride = Wrapper::stride(resultStrides[resultStrideIndex--]);