Remove several unused variables.

Patch by Alp Toker.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191757 91177308-0d34-0410-b5e6-96231b3b80d8

13 files changed, 6 insertions, 20 deletions

diff --git a/lib/Analysis/PathProfileVerifier.cpp b/lib/Analysis/PathProfileVerifier.cpp
index 48d7d05d788..dabd3475014 100644
--- a/lib/Analysis/PathProfileVerifier.cpp
+++ b/lib/Analysis/PathProfileVerifier.cpp
@@ -166,7 +166,6 @@ bool PathProfileVerifier::runOnModule (Module &M) {
     }
   }
 
-  std::string errorInfo;
   std::string filename = EdgeProfileFilename;
 
   // Open a handle to the file
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 2cf2de674e0..bdc79068946 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -2393,7 +2393,6 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
     Lex.Lex();
 
     ValID Fn, Label;
-    LocTy FnLoc, LabelLoc;
 
     if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
         ParseValID(Fn) ||
@@ -3185,7 +3184,6 @@ bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
 
   // Parse the instructions in this block until we get a terminator.
   Instruction *Inst;
-  SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
   do {
     // This instruction may have three possibilities for a name: a) none
     // specified, b) name specified "%foo =", c) number specified: "%4 =".
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 62ceb8b3a25..1756f942e4d 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1949,7 +1949,6 @@ void SelectionDAG::ComputeMaskedBits(SDValue Op, APInt &KnownZero,
   case ISD::SIGN_EXTEND: {
     EVT InVT = Op.getOperand(0).getValueType();
     unsigned InBits = InVT.getScalarType().getSizeInBits();
-    APInt InSignBit = APInt::getSignBit(InBits);
     APInt NewBits   = APInt::getHighBitsSet(BitWidth, BitWidth - InBits);
 
     KnownZero = KnownZero.trunc(InBits);
@@ -2061,7 +2060,6 @@ void SelectionDAG::ComputeMaskedBits(SDValue Op, APInt &KnownZero,
       const APInt &RA = Rem->getAPIntValue().abs();
       if (RA.isPowerOf2()) {
         APInt LowBits = RA - 1;
-        APInt Mask2 = LowBits | APInt::getSignBit(BitWidth);
         ComputeMaskedBits(Op.getOperand(0), KnownZero2,KnownOne2,Depth+1);
 
         // The low bits of the first operand are unchanged by the srem.
@@ -3787,7 +3785,7 @@ static SDValue getMemmoveLoadsAndStores(SelectionDAG &DAG, SDLoc dl,
   for (unsigned i = 0; i < NumMemOps; i++) {
     EVT VT = MemOps[i];
     unsigned VTSize = VT.getSizeInBits() / 8;
-    SDValue Value, Store;
+    SDValue Value;
 
     Value = DAG.getLoad(VT, dl, Chain,
                         getMemBasePlusOffset(Src, SrcOff, dl, DAG),
@@ -3803,7 +3801,7 @@ static SDValue getMemmoveLoadsAndStores(SelectionDAG &DAG, SDLoc dl,
   for (unsigned i = 0; i < NumMemOps; i++) {
     EVT VT = MemOps[i];
     unsigned VTSize = VT.getSizeInBits() / 8;
-    SDValue Value, Store;
+    SDValue Store;
 
     Store = DAG.getStore(Chain, dl, LoadValues[i],
                          getMemBasePlusOffset(Dst, DstOff, dl, DAG),
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 6d097a68f83..fcde6b5b939 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -2022,7 +2022,6 @@ HandleMergeInputChains(SmallVectorImpl<SDNode*> &ChainNodesMatched,
     }
   }
 
-  SDValue Res;
   if (InputChains.size() == 1)
     return InputChains[0];
   return CurDAG->getNode(ISD::TokenFactor, SDLoc(ChainNodesMatched[0]),
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp
index 8a1d5678775..ff0181e0f0c 100644
--- a/lib/CodeGen/TailDuplication.cpp
+++ b/lib/CodeGen/TailDuplication.cpp
@@ -638,8 +638,6 @@ bothUsedInPHI(const MachineBasicBlock &A,
 
 bool
 TailDuplicatePass::canCompletelyDuplicateBB(MachineBasicBlock &BB) {
-  SmallPtrSet<MachineBasicBlock*, 8> Succs(BB.succ_begin(), BB.succ_end());
-
   for (MachineBasicBlock::pred_iterator PI = BB.pred_begin(),
        PE = BB.pred_end(); PI != PE; ++PI) {
     MachineBasicBlock *PredBB = *PI;
diff --git a/lib/Support/GraphWriter.cpp b/lib/Support/GraphWriter.cpp
index 7a9400d28af..85be415dce0 100644
--- a/lib/Support/GraphWriter.cpp
+++ b/lib/Support/GraphWriter.cpp
@@ -219,5 +219,8 @@ void llvm::DisplayGraph(StringRef FilenameRef, bool wait,
   errs() << "Running 'dotty' program... ";
   if (!ExecGraphViewer(dotty, args, Filename, wait, ErrMsg))
     return;
+#else
+  (void)Filename;
+  (void)ErrMsg;
 #endif
 }
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 16a96fb1d7b..6289f9ebdbf 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -9814,7 +9814,6 @@ static SDValue Lower256IntVSETCC(SDValue Op, SelectionDAG &DAG) {
 }
 
 static SDValue LowerIntVSETCC_AVX512(SDValue Op, SelectionDAG &DAG) {
-  SDValue Cond;
   SDValue Op0 = Op.getOperand(0);
   SDValue Op1 = Op.getOperand(1);
   SDValue CC = Op.getOperand(2);
@@ -9850,7 +9849,6 @@ static SDValue LowerIntVSETCC_AVX512(SDValue Op, SelectionDAG &DAG) {
 
 static SDValue LowerVSETCC(SDValue Op, const X86Subtarget *Subtarget,
                            SelectionDAG &DAG) {
-  SDValue Cond;
   SDValue Op0 = Op.getOperand(0);
   SDValue Op1 = Op.getOperand(1);
   SDValue CC = Op.getOperand(2);
diff --git a/lib/Target/X86/X86SelectionDAGInfo.cpp b/lib/Target/X86/X86SelectionDAGInfo.cpp
index d1db79f6ae2..b9c620fddc4 100644
--- a/lib/Target/X86/X86SelectionDAGInfo.cpp
+++ b/lib/Target/X86/X86SelectionDAGInfo.cpp
@@ -46,8 +46,6 @@ X86SelectionDAGInfo::EmitTargetCodeForMemset(SelectionDAG &DAG, SDLoc dl,
       !ConstantSize ||
       ConstantSize->getZExtValue() >
         Subtarget->getMaxInlineSizeThreshold()) {
-    SDValue InFlag(0, 0);
-
     // Check to see if there is a specialized entry-point for memory zeroing.
     ConstantSDNode *V = dyn_cast<ConstantSDNode>(Src);
 
diff --git a/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index 8f8af20cee1..7ced56bedd2 100644
--- a/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -927,8 +927,7 @@ bool AddressSanitizerModule::runOnModule(Module &M) {
   StructType *GlobalStructTy = StructType::get(IntptrTy, IntptrTy,
                                                IntptrTy, IntptrTy,
                                                IntptrTy, IntptrTy, NULL);
-  SmallVector<Constant *, 16> Initializers(n), DynamicInit;
-
+  SmallVector<Constant *, 16> Initializers(n);
 
   Function *CtorFunc = M.getFunction(kAsanModuleCtorName);
   assert(CtorFunc);
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp
index e17a4160832..a2e82f337b9 100644
--- a/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -248,7 +248,6 @@ BasicBlock *llvm::SplitEdge(BasicBlock *BB, BasicBlock *Succ, Pass *P) {
 
   // If the edge isn't critical, then BB has a single successor or Succ has a
   // single pred.  Split the block.
-  BasicBlock::iterator SplitPoint;
   if (BasicBlock *SP = Succ->getSinglePredecessor()) {
     // If the successor only has a single pred, split the top of the successor
     // block.
diff --git a/lib/Transforms/Utils/LowerInvoke.cpp b/lib/Transforms/Utils/LowerInvoke.cpp
index f66b54d5067..9799a30f6a0 100644
--- a/lib/Transforms/Utils/LowerInvoke.cpp
+++ b/lib/Transforms/Utils/LowerInvoke.cpp
@@ -346,7 +346,6 @@ splitLiveRangesLiveAcrossInvokes(SmallVectorImpl<InvokeInst*> &Invokes) {
       // Scan all of the uses and see if the live range is live across an unwind
       // edge.  If we find a use live across an invoke edge, create an alloca
       // and spill the value.
-      std::set<InvokeInst*> InvokesWithStoreInserted;
 
       // Find all of the blocks that this value is live in.
       std::set<BasicBlock*> LiveBBs;
diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp
index 0b5d0d41d08..d5df111588f 100644
--- a/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -3758,7 +3758,6 @@ bool LoopVectorizationLegality::canVectorizeMemory() {
     return true;
   }
 
-  SmallPtrSet<Value *, 16> ReadOnlyPtr;
   for (I = Loads.begin(), IE = Loads.end(); I != IE; ++I) {
     LoadInst *LD = cast<LoadInst>(*I);
     Value* Ptr = LD->getPointerOperand();
diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp
index c8c8ba51b7e..c2c53c7c577 100644
--- a/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -2172,7 +2172,6 @@ private:
     assert(isPowerOf2_32(ReduxWidth) &&
            "We only handle power-of-two reductions for now");
 
-    SmallVector<Constant *, 32> ShuffleMask(ReduxWidth, 0);
     Value *TmpVec = ValToReduce;
     for (unsigned i = ReduxWidth / 2; i != 0; i >>= 1) {
       if (IsPairwiseReduction) {