[llvm] Remove unused local variables (NFC) (#138454)

Author: kazutakahirata

llvm/include/llvm/CodeGen/SDPatternMatch.h

@@ -1156,7 +1156,6 @@ template <typename... PatternTs> struct ReassociatableOpc_match {
     // std::get<J>(Patterns)) == true
     std::array<SmallBitVector, NumPatterns> Matches;
     for (size_t I = 0; I != NumPatterns; I++) {
-      SmallVector<bool> MatchResults;
       std::apply(
           [&](auto &...P) {
             (Matches[I].push_back(sd_context_match(Leaves[I], Ctx, P)), ...);

llvm/include/llvm/Support/GenericLoopInfoImpl.h

@@ -604,7 +604,7 @@ void LoopInfoBase<BlockT, LoopT>::analyze(const DomTreeBase<BlockT> &DomTree) {
 template <class BlockT, class LoopT>
 SmallVector<LoopT *, 4>
 LoopInfoBase<BlockT, LoopT>::getLoopsInPreorder() const {
-  SmallVector<LoopT *, 4> PreOrderLoops, PreOrderWorklist;
+  SmallVector<LoopT *, 4> PreOrderLoops;
   // The outer-most loop actually goes into the result in the same relative
   // order as we walk it. But LoopInfo stores the top level loops in reverse
   // program order so for here we reverse it to get forward program order.

llvm/lib/Analysis/BranchProbabilityInfo.cpp

@@ -666,7 +666,6 @@ BranchProbabilityInfo::getEstimatedEdgeWeight(const LoopEdge &Edge) const {
 template <class IterT>
 std::optional<uint32_t> BranchProbabilityInfo::getMaxEstimatedEdgeWeight(
     const LoopBlock &SrcLoopBB, iterator_range<IterT> Successors) const {
-  SmallVector<uint32_t, 4> Weights;
   std::optional<uint32_t> MaxWeight;
   for (const BasicBlock *DstBB : Successors) {
     const LoopBlock DstLoopBB = getLoopBlock(DstBB);

llvm/lib/Analysis/LoopAccessAnalysis.cpp

@@ -1426,9 +1426,6 @@ void AccessAnalysis::processMemAccesses() {
 
           // Create sets of pointers connected by a shared alias set and
           // underlying object.
-          typedef SmallVector<const Value *, 16> ValueVector;
-          ValueVector TempObjects;
-
           SmallVector<const Value *, 16> &UOs = UnderlyingObjects[Ptr];
           UOs = {};
           ::getUnderlyingObjects(Ptr, UOs, LI);

llvm/lib/Bitcode/Reader/BitcodeReader.cpp

@@ -3997,8 +3997,6 @@ Error BitcodeReader::rememberAndSkipFunctionBodies() {
   // finished the parse greedily.
   assert(SeenValueSymbolTable);
 
-  SmallVector<uint64_t, 64> Record;
-
   while (true) {
     Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance();
     if (!MaybeEntry)

llvm/lib/ExecutionEngine/Orc/GetDylibInterface.cpp

@@ -111,7 +111,6 @@ Expected<SymbolNameSet> getDylibInterface(ExecutionSession &ES, Twine Path) {
   if (auto EC = identify_magic(Path, Magic))
     return createFileError(Path, EC);
 
-  SymbolNameSet Symbols;
   switch (Magic) {
   case file_magic::macho_universal_binary:
   case file_magic::macho_dynamically_linked_shared_lib:

llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp

@@ -4607,8 +4607,6 @@ OpenMPIRBuilder::applyWorkshareLoopTarget(DebugLoc DL, CanonicalLoopInfo *CLI,
   SmallPtrSet<BasicBlock *, 32> ParallelRegionBlockSet;
   SmallVector<BasicBlock *, 32> Blocks;
   OI.collectBlocks(ParallelRegionBlockSet, Blocks);
-  SmallVector<BasicBlock *, 32> BlocksT(ParallelRegionBlockSet.begin(),
-                                        ParallelRegionBlockSet.end());
 
   CodeExtractorAnalysisCache CEAC(*OuterFn);
   CodeExtractor Extractor(Blocks,
@@ -4624,7 +4622,7 @@ OpenMPIRBuilder::applyWorkshareLoopTarget(DebugLoc DL, CanonicalLoopInfo *CLI,
                           /* AggrArgsIn0AddrSpace */ true);
 
   BasicBlock *CommonExit = nullptr;
-  SetVector<Value *> Inputs, Outputs, SinkingCands, HoistingCands;
+  SetVector<Value *> SinkingCands, HoistingCands;
 
   // Find allocas outside the loop body region which are used inside loop
   // body

llvm/lib/IR/SafepointIRVerifier.cpp

@@ -157,7 +157,6 @@ class CFGDeadness {
 protected:
   void addDeadBlock(const BasicBlock *BB) {
     SmallVector<const BasicBlock *, 4> NewDead;
-    SmallSetVector<const BasicBlock *, 4> DF;
 
     NewDead.push_back(BB);
     while (!NewDead.empty()) {

llvm/lib/ObjCopy/CommonConfig.cpp

@@ -19,7 +19,6 @@ NameOrPattern::create(StringRef Pattern, MatchStyle MS,
   case MatchStyle::Literal:
     return NameOrPattern(Pattern);
   case MatchStyle::Wildcard: {
-    SmallVector<char, 32> Data;
     bool IsPositiveMatch = !Pattern.consume_front("!");
     Expected<GlobPattern> GlobOrErr = GlobPattern::create(Pattern);
 

llvm/lib/ProfileData/InstrProf.cpp

@@ -537,7 +537,6 @@ Error InstrProfSymtab::create(Module &M, bool InLTO, bool AddCanonical) {
       return E;
   }
 
-  SmallVector<MDNode *, 2> Types;
   for (GlobalVariable &G : M.globals()) {
     if (!G.hasName() || !G.hasMetadata(LLVMContext::MD_type))
       continue;