[Analysis] Remove unused forward declarations (NFC)

llvm/include/llvm/Analysis/AliasAnalysis.h

@@ -60,7 +60,6 @@ class CatchReturnInst;
 class DominatorTree;
 class FenceInst;
 class Function;
-class InvokeInst;
 class LoopInfo;
 class PreservedAnalyses;
 class TargetLibraryInfo;

llvm/include/llvm/Analysis/DivergenceAnalysis.h

@@ -22,7 +22,6 @@
 #include <vector>
 
 namespace llvm {
-class Module;
 class Value;
 class Instruction;
 class Loop;

llvm/include/llvm/Analysis/IVUsers.h

@@ -28,7 +28,6 @@ class Value;
 class ScalarEvolution;
 class SCEV;
 class IVUsers;
-class DataLayout;
 
 /// IVStrideUse - Keep track of one use of a strided induction variable.
 /// The Expr member keeps track of the expression, User is the actual user

llvm/include/llvm/Analysis/InlineCost.h

@@ -21,7 +21,6 @@
 #include <climits>
 
 namespace llvm {
-class AssumptionCacheTracker;
 class BlockFrequencyInfo;
 class CallBase;
 class DataLayout;

llvm/include/llvm/Analysis/InlineOrder.h

@@ -20,7 +20,6 @@
 namespace llvm {
 class CallBase;
 class Function;
-class Module;
 
 template <typename T> class InlineOrder {
 public:

llvm/include/llvm/Analysis/LazyBlockFrequencyInfo.h

@@ -22,7 +22,6 @@
 
 namespace llvm {
 class AnalysisUsage;
-class BranchProbabilityInfo;
 class Function;
 class LoopInfo;
 

llvm/include/llvm/Analysis/Loads.h

@@ -24,7 +24,6 @@ class DominatorTree;
 class Instruction;
 class LoadInst;
 class Loop;
-class MDNode;
 class MemoryLocation;
 class ScalarEvolution;
 class TargetLibraryInfo;

llvm/include/llvm/Analysis/LoopAccessAnalysis.h

@@ -26,7 +26,6 @@ class AAResults;
 class DataLayout;
 class Loop;
 class LoopAccessInfo;
-class OptimizationRemarkEmitter;
 class raw_ostream;
 class SCEV;
 class SCEVUnionPredicate;

llvm/include/llvm/Analysis/MemoryBuiltins.h

@@ -30,7 +30,6 @@ namespace llvm {
 class AllocaInst;
 class Argument;
 class CallInst;
-class ConstantInt;
 class ConstantPointerNull;
 class DataLayout;
 class ExtractElementInst;

llvm/include/llvm/Analysis/MemorySSA.h

@@ -106,7 +106,6 @@
 
 namespace llvm {
 
-class AllocaInst;
 class Function;
 class Instruction;
 class MemoryAccess;

llvm/include/llvm/Analysis/MemorySSAUpdater.h

@@ -44,7 +44,6 @@
 namespace llvm {
 
 class BasicBlock;
-class BranchInst;
 class DominatorTree;
 class Instruction;
 class LoopBlocksRPO;

llvm/include/llvm/Analysis/ReplayInlineAdvisor.h

@@ -14,11 +14,9 @@
 #include "llvm/IR/LLVMContext.h"
 
 namespace llvm {
-class BasicBlock;
 class CallBase;
 class Function;
 class Module;
-class OptimizationRemarkEmitter;
 
 struct CallSiteFormat {
   enum class Format : int {

llvm/include/llvm/Analysis/SyncDependenceAnalysis.h

@@ -27,7 +27,6 @@ namespace llvm {
 
 class BasicBlock;
 class DominatorTree;
-class Loop;
 class PostDominatorTree;
 
 using ConstBlockSet = SmallPtrSet<const BasicBlock *, 4>;

llvm/include/llvm/Analysis/TargetTransformInfo.h

@@ -43,7 +43,6 @@ class BlockFrequencyInfo;
 class DominatorTree;
 class BranchInst;
 class CallBase;
-class ExtractElementInst;
 class Function;
 class GlobalValue;
 class InstCombiner;

llvm/include/llvm/Analysis/ValueTracking.h

@@ -33,7 +33,6 @@ class APInt;
 class AssumptionCache;
 class DominatorTree;
 class GEPOperator;
-class IntrinsicInst;
 class LoadInst;
 class WithOverflowInst;
 struct KnownBits;