From 75a089166ded4bbef25eb3ad96d51bc3981a9138 Mon Sep 17 00:00:00 2001
From: Zahira Ammarguellat <zahira.ammarguellat@intel.com>
Date: Mon, 15 Mar 2021 12:15:34 -0400
Subject: [PATCH] [NFC] Fix "unused parameter" error revealed in the Linux
 self-build.

---
 include/llvm/ADT/IntrusiveRefCntPtr.h        | 2 +-
 include/llvm/Support/Error.h                 | 2 +-
 include/llvm/Support/FormatVariadicDetails.h | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/llvm/ADT/IntrusiveRefCntPtr.h b/include/llvm/ADT/IntrusiveRefCntPtr.h
index f3dead8636d..9715c9d01b9 100644
--- a/include/llvm/ADT/IntrusiveRefCntPtr.h
+++ b/include/llvm/ADT/IntrusiveRefCntPtr.h
@@ -255,7 +255,7 @@ inline bool operator!=(T *A, const IntrusiveRefCntPtr<U> &B) {
 }
 
 template <class T>
-bool operator==(std::nullptr_t A, const IntrusiveRefCntPtr<T> &B) {
+bool operator==(std::nullptr_t, const IntrusiveRefCntPtr<T> &B) {
   return !B;
 }
 
diff --git a/include/llvm/Support/Error.h b/include/llvm/Support/Error.h
index c0f7c10aefb..9c2942ba7b7 100644
--- a/include/llvm/Support/Error.h
+++ b/include/llvm/Support/Error.h
@@ -592,7 +592,7 @@ private:
   }
 
   template <class T1, class T2>
-  static bool compareThisIfSameType(const T1 &a, const T2 &b) {
+  static bool compareThisIfSameType(const T1 &, const T2 &) {
     return false;
   }
 
diff --git a/include/llvm/Support/FormatVariadicDetails.h b/include/llvm/Support/FormatVariadicDetails.h
index 1a5eb3f3b4a..08f8fc61f69 100644
--- a/include/llvm/Support/FormatVariadicDetails.h
+++ b/include/llvm/Support/FormatVariadicDetails.h
@@ -48,7 +48,7 @@ public:
   explicit stream_operator_format_adapter(T &&Item)
       : Item(std::forward<T>(Item)) {}
 
-  void format(llvm::raw_ostream &S, StringRef Options) override { S << Item; }
+  void format(llvm::raw_ostream &S, StringRef) override { S << Item; }
 };
 
 template <typename T> class missing_format_adapter;
@@ -153,7 +153,7 @@ build_format_adapter(T &&Item) {
 
 template <typename T>
 std::enable_if_t<uses_missing_provider<T>::value, missing_format_adapter<T>>
-build_format_adapter(T &&Item) {
+build_format_adapter(T &&) {
   return missing_format_adapter<T>();
 }
 }