[llvm] format and terminate namespaces with closing comment (#94917)

Namespaces are terminated with a closing comment in the majority of the
codebase so do the same here for consistency. Also format code within
some namespaces to make clang-format happy.

Author: VoltrexKeyva

llvm/lib/Analysis/CallGraphSCCPass.cpp

@@ -46,7 +46,7 @@ using namespace llvm;
 namespace llvm {
 cl::opt<unsigned> MaxDevirtIterations("max-devirt-iterations", cl::ReallyHidden,
                                       cl::init(4));
-}
+} // namespace llvm
 
 STATISTIC(MaxSCCIterations, "Maximum CGSCCPassMgr iterations on one SCC");
 

llvm/lib/Analysis/CallPrinter.cpp

@@ -29,7 +29,7 @@ using namespace llvm;
 
 namespace llvm {
 template <class GraphType> struct GraphTraits;
-}
+} // namespace llvm
 
 // This option shows static (relative) call counts.
 // FIXME:
@@ -215,7 +215,7 @@ struct DOTGraphTraits<CallGraphDOTInfo *> : public DefaultDOTGraphTraits {
   }
 };
 
-} // end llvm namespace
+} // namespace llvm
 
 namespace {
 void doCallGraphDOTPrinting(

llvm/lib/Analysis/CaptureTracking.cpp

@@ -72,127 +72,127 @@ bool CaptureTracker::isDereferenceableOrNull(Value *O, const DataLayout &DL) {
 }
 
 namespace {
-  struct SimpleCaptureTracker : public CaptureTracker {
-    explicit SimpleCaptureTracker(bool ReturnCaptures)
-        : ReturnCaptures(ReturnCaptures) {}
+struct SimpleCaptureTracker : public CaptureTracker {
+  explicit SimpleCaptureTracker(bool ReturnCaptures)
+      : ReturnCaptures(ReturnCaptures) {}
 
-    void tooManyUses() override {
-      LLVM_DEBUG(dbgs() << "Captured due to too many uses\n");
-      Captured = true;
-    }
+  void tooManyUses() override {
+    LLVM_DEBUG(dbgs() << "Captured due to too many uses\n");
+    Captured = true;
+  }
 
-    bool captured(const Use *U) override {
-      if (isa<ReturnInst>(U->getUser()) && !ReturnCaptures)
-        return false;
+  bool captured(const Use *U) override {
+    if (isa<ReturnInst>(U->getUser()) && !ReturnCaptures)
+      return false;
 
-      LLVM_DEBUG(dbgs() << "Captured by: " << *U->getUser() << "\n");
+    LLVM_DEBUG(dbgs() << "Captured by: " << *U->getUser() << "\n");
 
-      Captured = true;
-      return true;
-    }
+    Captured = true;
+    return true;
+  }
 
-    bool ReturnCaptures;
+  bool ReturnCaptures;
 
-    bool Captured = false;
-  };
+  bool Captured = false;
+};
 
-  /// Only find pointer captures which happen before the given instruction. Uses
-  /// the dominator tree to determine whether one instruction is before another.
-  /// Only support the case where the Value is defined in the same basic block
-  /// as the given instruction and the use.
-  struct CapturesBefore : public CaptureTracker {
+/// Only find pointer captures which happen before the given instruction. Uses
+/// the dominator tree to determine whether one instruction is before another.
+/// Only support the case where the Value is defined in the same basic block
+/// as the given instruction and the use.
+struct CapturesBefore : public CaptureTracker {
 
-    CapturesBefore(bool ReturnCaptures, const Instruction *I,
-                   const DominatorTree *DT, bool IncludeI, const LoopInfo *LI)
-        : BeforeHere(I), DT(DT), ReturnCaptures(ReturnCaptures),
-          IncludeI(IncludeI), LI(LI) {}
+  CapturesBefore(bool ReturnCaptures, const Instruction *I,
+                 const DominatorTree *DT, bool IncludeI, const LoopInfo *LI)
+      : BeforeHere(I), DT(DT), ReturnCaptures(ReturnCaptures),
+        IncludeI(IncludeI), LI(LI) {}
 
-    void tooManyUses() override { Captured = true; }
+  void tooManyUses() override { Captured = true; }
 
-    bool isSafeToPrune(Instruction *I) {
-      if (BeforeHere == I)
-        return !IncludeI;
+  bool isSafeToPrune(Instruction *I) {
+    if (BeforeHere == I)
+      return !IncludeI;
 
-      // We explore this usage only if the usage can reach "BeforeHere".
-      // If use is not reachable from entry, there is no need to explore.
-      if (!DT->isReachableFromEntry(I->getParent()))
-        return true;
+    // We explore this usage only if the usage can reach "BeforeHere".
+    // If use is not reachable from entry, there is no need to explore.
+    if (!DT->isReachableFromEntry(I->getParent()))
+      return true;
 
-      // Check whether there is a path from I to BeforeHere.
-      return !isPotentiallyReachable(I, BeforeHere, nullptr, DT, LI);
-    }
+    // Check whether there is a path from I to BeforeHere.
+    return !isPotentiallyReachable(I, BeforeHere, nullptr, DT, LI);
+  }
 
-    bool captured(const Use *U) override {
-      Instruction *I = cast<Instruction>(U->getUser());
-      if (isa<ReturnInst>(I) && !ReturnCaptures)
-        return false;
+  bool captured(const Use *U) override {
+    Instruction *I = cast<Instruction>(U->getUser());
+    if (isa<ReturnInst>(I) && !ReturnCaptures)
+      return false;
 
-      // Check isSafeToPrune() here rather than in shouldExplore() to avoid
-      // an expensive reachability query for every instruction we look at.
-      // Instead we only do one for actual capturing candidates.
-      if (isSafeToPrune(I))
-        return false;
+    // Check isSafeToPrune() here rather than in shouldExplore() to avoid
+    // an expensive reachability query for every instruction we look at.
+    // Instead we only do one for actual capturing candidates.
+    if (isSafeToPrune(I))
+      return false;
 
-      Captured = true;
-      return true;
-    }
+    Captured = true;
+    return true;
+  }
 
-    const Instruction *BeforeHere;
-    const DominatorTree *DT;
+  const Instruction *BeforeHere;
+  const DominatorTree *DT;
 
-    bool ReturnCaptures;
-    bool IncludeI;
+  bool ReturnCaptures;
+  bool IncludeI;
 
-    bool Captured = false;
+  bool Captured = false;
 
-    const LoopInfo *LI;
-  };
+  const LoopInfo *LI;
+};
 
-  /// Find the 'earliest' instruction before which the pointer is known not to
-  /// be captured. Here an instruction A is considered earlier than instruction
-  /// B, if A dominates B. If 2 escapes do not dominate each other, the
-  /// terminator of the common dominator is chosen. If not all uses cannot be
-  /// analyzed, the earliest escape is set to the first instruction in the
-  /// function entry block.
-  // NOTE: Users have to make sure instructions compared against the earliest
-  // escape are not in a cycle.
-  struct EarliestCaptures : public CaptureTracker {
-
-    EarliestCaptures(bool ReturnCaptures, Function &F, const DominatorTree &DT)
-        : DT(DT), ReturnCaptures(ReturnCaptures), F(F) {}
-
-    void tooManyUses() override {
-      Captured = true;
-      EarliestCapture = &*F.getEntryBlock().begin();
-    }
+/// Find the 'earliest' instruction before which the pointer is known not to
+/// be captured. Here an instruction A is considered earlier than instruction
+/// B, if A dominates B. If 2 escapes do not dominate each other, the
+/// terminator of the common dominator is chosen. If not all uses cannot be
+/// analyzed, the earliest escape is set to the first instruction in the
+/// function entry block.
+// NOTE: Users have to make sure instructions compared against the earliest
+// escape are not in a cycle.
+struct EarliestCaptures : public CaptureTracker {
 
-    bool captured(const Use *U) override {
-      Instruction *I = cast<Instruction>(U->getUser());
-      if (isa<ReturnInst>(I) && !ReturnCaptures)
-        return false;
+  EarliestCaptures(bool ReturnCaptures, Function &F, const DominatorTree &DT)
+      : DT(DT), ReturnCaptures(ReturnCaptures), F(F) {}
 
-      if (!EarliestCapture)
-        EarliestCapture = I;
-      else
-        EarliestCapture = DT.findNearestCommonDominator(EarliestCapture, I);
-      Captured = true;
+  void tooManyUses() override {
+    Captured = true;
+    EarliestCapture = &*F.getEntryBlock().begin();
+  }
 
-      // Return false to continue analysis; we need to see all potential
-      // captures.
+  bool captured(const Use *U) override {
+    Instruction *I = cast<Instruction>(U->getUser());
+    if (isa<ReturnInst>(I) && !ReturnCaptures)
       return false;
-    }
 
-    Instruction *EarliestCapture = nullptr;
+    if (!EarliestCapture)
+      EarliestCapture = I;
+    else
+      EarliestCapture = DT.findNearestCommonDominator(EarliestCapture, I);
+    Captured = true;
 
-    const DominatorTree &DT;
+    // Return false to continue analysis; we need to see all potential
+    // captures.
+    return false;
+  }
 
-    bool ReturnCaptures;
+  Instruction *EarliestCapture = nullptr;
 
-    bool Captured = false;
+  const DominatorTree &DT;
 
-    Function &F;
-  };
-}
+  bool ReturnCaptures;
+
+  bool Captured = false;
+
+  Function &F;
+};
+} // namespace
 
 /// PointerMayBeCaptured - Return true if this pointer value may be captured
 /// by the enclosing function (which is required to exist).  This routine can

llvm/lib/Analysis/CycleAnalysis.cpp

@@ -15,7 +15,7 @@ using namespace llvm;
 
 namespace llvm {
 class Module;
-}
+} // namespace llvm
 
 CycleInfo CycleAnalysis::run(Function &F, FunctionAnalysisManager &) {
   CycleInfo CI;

llvm/lib/Analysis/FunctionPropertiesAnalysis.cpp

@@ -39,7 +39,7 @@ cl::opt<unsigned> MediumBasicBlockInstructionThreshold(
     "medium-basic-block-instruction-threshold", cl::Hidden, cl::init(15),
     cl::desc("The minimum number of instructions a basic block should contain "
              "before being considered medium-sized."));
-}
+} // namespace llvm
 
 static cl::opt<unsigned> CallWithManyArgumentsThreshold(
     "call-with-many-arguments-threshold", cl::Hidden, cl::init(4),

llvm/lib/Analysis/ImportedFunctionsInliningStatistics.cpp

@@ -32,7 +32,7 @@ cl::opt<InlinerFunctionImportStatsOpts> InlinerFunctionImportStats(
                clEnumValN(InlinerFunctionImportStatsOpts::Verbose, "verbose",
                           "printing of statistics for each inlined function")),
     cl::Hidden, cl::desc("Enable inliner stats for imported functions"));
-}
+} // namespace llvm
 
 ImportedFunctionsInliningStatistics::InlineGraphNode &
 ImportedFunctionsInliningStatistics::createInlineGraphNode(const Function &F) {

llvm/lib/Analysis/InlineAdvisor.cpp

@@ -64,7 +64,7 @@ static cl::opt<bool>
 
 namespace llvm {
 extern cl::opt<InlinerFunctionImportStatsOpts> InlinerFunctionImportStats;
-}
+} // namespace llvm
 
 namespace {
 using namespace llvm::ore;