From 88436afe3073bbf5a1fe3205dbac01c1e0dd5981 Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Fri, 25 Mar 2022 22:15:35 -0700
Subject: [PATCH] [LoongArch] Fix several Clang warnings. NFC

---
 llvm/lib/Target/LoongArch/AsmParser/LoongArchAsmParser.cpp   | 5 +----
 llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp             | 4 +---
 llvm/lib/Target/LoongArch/LoongArchInstrInfo.h               | 2 --
 llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.h | 4 +---
 .../LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp      | 1 -
 5 files changed, 3 insertions(+), 13 deletions(-)

diff --git a/llvm/lib/Target/LoongArch/AsmParser/LoongArchAsmParser.cpp b/llvm/lib/Target/LoongArch/AsmParser/LoongArchAsmParser.cpp
index 467ae0cc16658..f753b5317f501 100644
--- a/llvm/lib/Target/LoongArch/AsmParser/LoongArchAsmParser.cpp
+++ b/llvm/lib/Target/LoongArch/AsmParser/LoongArchAsmParser.cpp
@@ -24,8 +24,6 @@ using namespace llvm;
 #define DEBUG_TYPE "loongarch-asm-parser"
 
 namespace {
-struct LoongArchOperand;
-
 class LoongArchAsmParser : public MCTargetAsmParser {
   SMLoc getLoc() const { return getParser().getTok().getLoc(); }
 
@@ -82,8 +80,7 @@ class LoongArchAsmParser : public MCTargetAsmParser {
   }
 };
 
-/// LoongArchOperand - Instances of this class represent a parsed LoongArch
-/// machine instruction.
+// Instances of this class represent a parsed LoongArch machine instruction.
 class LoongArchOperand : public MCParsedAsmOperand {
   enum class KindTy {
     Token,
diff --git a/llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp b/llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp
index 07b11fe302d8e..e45c8ff8e9323 100644
--- a/llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp
+++ b/llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp
@@ -19,6 +19,4 @@ using namespace llvm;
 
 LoongArchInstrInfo::LoongArchInstrInfo(LoongArchSubtarget &STI)
     // FIXME: add CFSetup and CFDestroy Inst when we implement function call.
-    : LoongArchGenInstrInfo(),
-
-      STI(STI) {}
+    : LoongArchGenInstrInfo() {}
diff --git a/llvm/lib/Target/LoongArch/LoongArchInstrInfo.h b/llvm/lib/Target/LoongArch/LoongArchInstrInfo.h
index 9d737fa1a988b..b056fff1c95e5 100644
--- a/llvm/lib/Target/LoongArch/LoongArchInstrInfo.h
+++ b/llvm/lib/Target/LoongArch/LoongArchInstrInfo.h
@@ -23,8 +23,6 @@ namespace llvm {
 class LoongArchSubtarget;
 
 class LoongArchInstrInfo : public LoongArchGenInstrInfo {
-  const LoongArchSubtarget &STI;
-
 public:
   explicit LoongArchInstrInfo(LoongArchSubtarget &STI);
 };
diff --git a/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.h b/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.h
index 282137b8480a2..77bbfb095747c 100644
--- a/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.h
+++ b/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.h
@@ -22,14 +22,12 @@
 namespace llvm {
 
 class LoongArchAsmBackend : public MCAsmBackend {
-  const MCSubtargetInfo &STI;
   uint8_t OSABI;
   bool Is64Bit;
 
 public:
   LoongArchAsmBackend(const MCSubtargetInfo &STI, uint8_t OSABI, bool Is64Bit)
-      : MCAsmBackend(support::little), STI(STI), OSABI(OSABI),
-        Is64Bit(Is64Bit) {}
+      : MCAsmBackend(support::little), OSABI(OSABI), Is64Bit(Is64Bit) {}
   ~LoongArchAsmBackend() override {}
 
   void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
diff --git a/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp b/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp
index 254d619c06faa..95e1314f363a9 100644
--- a/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp
+++ b/llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp
@@ -45,7 +45,6 @@ unsigned LoongArchELFObjectWriter::getRelocType(MCContext &Ctx,
                                                 const MCValue &Target,
                                                 const MCFixup &Fixup,
                                                 bool IsPCRel) const {
-  const MCExpr *Expr = Fixup.getValue();
   // Determine the type of the relocation
   unsigned Kind = Fixup.getTargetKind();