Tidy up #includes, deleting a bunch of unnecessary #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61715 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/ConstantsScanner.h

@@ -17,7 +17,6 @@
 #define LLVM_ANALYSIS_CONSTANTSSCANNER_H
 
 #include "llvm/Support/InstIterator.h"
-#include "llvm/Instruction.h"
 #include "llvm/ADT/iterator.h"
 
 namespace llvm {

include/llvm/Analysis/DominatorInternals.h

@@ -11,8 +11,8 @@
 #define LLVM_ANALYSIS_DOMINATOR_INTERNALS_H
 
 #include "llvm/Analysis/Dominators.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallPtrSet.h"
+
 //===----------------------------------------------------------------------===//
 //
 // DominatorTree construction - This pass constructs immediate dominator

include/llvm/Analysis/Dominators.h

@@ -24,7 +24,6 @@
 #include "llvm/Pass.h"
 #include "llvm/BasicBlock.h"
 #include "llvm/Function.h"
-#include "llvm/Instruction.h"
 #include "llvm/Instructions.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/GraphTraits.h"

include/llvm/Analysis/EscapeAnalysis.h

@@ -15,13 +15,13 @@
 #define LLVM_ANALYSIS_ESCAPEANALYSIS_H
 
 #include "llvm/Pass.h"
-#include "llvm/Instructions.h"
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/Target/TargetData.h"
 #include <set>
 
 namespace llvm {
 
+class Instruction;
+class Value;
+
 /// EscapeAnalysis - This class determines whether an allocation (a MallocInst 
 /// or an AllocaInst) can escape from the current function.  It performs some
 /// precomputation, with the rest of the work happening on-demand.
@@ -40,11 +40,7 @@ public:
     EscapePoints.clear();
   }
 
-  void getAnalysisUsage(AnalysisUsage &AU) const {
-    AU.addRequiredTransitive<TargetData>();
-    AU.addRequiredTransitive<AliasAnalysis>();
-    AU.setPreservesAll();
-  }
+  void getAnalysisUsage(AnalysisUsage &AU) const;
 
   //===---------------------------------------------------------------------
   // Client API

include/llvm/Analysis/FindUsedTypes.h

@@ -20,6 +20,7 @@
 namespace llvm {
 
 class Type;
+class Value;
 
 class FindUsedTypes : public ModulePass {
   std::set<const Type *> UsedTypes;

include/llvm/Analysis/LoopInfo.h

@@ -54,8 +54,6 @@ static void RemoveFromVector(std::vector<T*> &V, T *N) {
 
 class DominatorTree;
 class LoopInfo;
-class PHINode;
-class Instruction;
 template<class N> class LoopInfoBase;
 template<class N> class LoopBase;
 

include/llvm/Analysis/ScalarEvolutionExpander.h

@@ -14,7 +14,7 @@
 #ifndef LLVM_ANALYSIS_SCALAREVOLUTION_EXPANDER_H
 #define LLVM_ANALYSIS_SCALAREVOLUTION_EXPANDER_H
 
-#include "llvm/Instructions.h"
+#include "llvm/Instruction.h"
 #include "llvm/Type.h"
 #include "llvm/Analysis/ScalarEvolution.h"
 #include "llvm/Analysis/ScalarEvolutionExpressions.h"
@@ -119,4 +119,3 @@ namespace llvm {
 }
 
 #endif
-

include/llvm/Analysis/SparsePropagation.h

@@ -17,7 +17,7 @@
 
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallVector.h"
+#include <iosfwd>
 #include <vector>
 #include <set>
 
@@ -31,6 +31,8 @@ namespace llvm {
   class BasicBlock;
   class Function;
   class SparseSolver;
+
+  template<typename T> class SmallVectorImpl;
   
 /// AbstractLatticeFunction - This class is implemented by the dataflow instance
 /// to specify what the lattice values are and how they handle merges etc.

include/llvm/Analysis/ValueTracking.h

@@ -15,8 +15,8 @@
 #ifndef LLVM_ANALYSIS_VALUETRACKING_H
 #define LLVM_ANALYSIS_VALUETRACKING_H
 
+#include "llvm/Support/DataTypes.h"
 #include <string>
-#include <llvm/Support/DataTypes.h>
 
 namespace llvm {
   class Value;