[llvm] [PatternMatch] m_SpecificMask should pass expected mask by Value. NFC (PR #121527)

[Craig Topper via llvm-commits]

https://github.com/topperc created https://github.com/llvm/llvm-project/pull/121527

Unlike m_Mask, we don't need to modify a variable owned by the caller so we should pass the ArrayRef by value or const reference.

>From e5542a323b6b11a875f237bc2539bbd0ac0de281 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper at sifive.com>
Date: Thu, 2 Jan 2025 14:58:26 -0800
Subject: [PATCH] [PatternMatch] m_SpecificMask should pass expected mask by
 Value. NFC

Unlike m_Mask, we don't need to modify a variable owned by the caller
so we should pass the ArrayRef by value or const reference.
---
 llvm/include/llvm/IR/PatternMatch.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/llvm/include/llvm/IR/PatternMatch.h b/llvm/include/llvm/IR/PatternMatch.h
index cc0e8d598ff1ea..b37f967191aaa8 100644
--- a/llvm/include/llvm/IR/PatternMatch.h
+++ b/llvm/include/llvm/IR/PatternMatch.h
@@ -1844,9 +1844,9 @@ struct m_ZeroMask {
 };
 
 struct m_SpecificMask {
-  ArrayRef<int> &MaskRef;
-  m_SpecificMask(ArrayRef<int> &MaskRef) : MaskRef(MaskRef) {}
-  bool match(ArrayRef<int> Mask) { return MaskRef == Mask; }
+  ArrayRef<int> Val;
+  m_SpecificMask(ArrayRef<int> Val) : Val(Val) {}
+  bool match(ArrayRef<int> Mask) { return Val == Mask; }
 };
 
 struct m_SplatOrPoisonMask {