From c0b70def210edfa52c0165682fecf080166b468f Mon Sep 17 00:00:00 2001
From: Mehdi Amini <joker.eph@gmail.com>
Date: Sat, 28 Aug 2021 00:09:27 +0000
Subject: [PATCH] Specify argument to be `const` for `debugString()` helper
 (NFC)

This allows using this helper with rvalues.
---
 mlir/include/mlir/Support/DebugStringHelper.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mlir/include/mlir/Support/DebugStringHelper.h b/mlir/include/mlir/Support/DebugStringHelper.h
index 92acc4f..0a94388 100644
--- a/mlir/include/mlir/Support/DebugStringHelper.h
+++ b/mlir/include/mlir/Support/DebugStringHelper.h
@@ -24,7 +24,8 @@
 namespace mlir {
 
 // Simple helper function that returns a string as printed from a op.
-template <typename T> static std::string debugString(T &op) {
+template <typename T>
+static std::string debugString(const T &op) {
   std::string instr_str;
   llvm::raw_string_ostream os(instr_str);
   op.print(os);
-- 
2.7.4