ProfileSummaryInfo.h - remove unnecessary includes. NFC

Remove a number of includes that aren't necessary (nor are we relying on the remaining includes to provide the declarations), we just needed a llvm::Instruction forward declaration.

This exposed a couple of source files that were implicitly replying on the includes for their use of llvm::SmallSet or std::set, requiring local includes to be added there instead.

include/llvm/Analysis/ProfileSummaryInfo.h

@@ -14,14 +14,10 @@
 #ifndef LLVM_ANALYSIS_PROFILE_SUMMARY_INFO_H
 #define LLVM_ANALYSIS_PROFILE_SUMMARY_INFO_H
 
-#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallSet.h"
 #include "llvm/IR/Function.h"
-#include "llvm/IR/Instructions.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/IR/ProfileSummary.h"
-#include "llvm/IR/ValueHandle.h"
 #include "llvm/Pass.h"
 #include <memory>
 
@@ -29,6 +25,7 @@ namespace llvm {
 class BasicBlock;
 class BlockFrequencyInfo;
 class CallSite;
+class Instruction;
 class ProfileSummary;
 /// Analysis providing profile information.
 ///

lib/CodeGen/SelectionDAG/StatepointLowering.cpp

@@ -18,6 +18,7 @@
 #include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/CodeGen/FunctionLoweringInfo.h"

lib/Target/BPF/BPFMIPeephole.cpp

@@ -27,6 +27,7 @@
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/Support/Debug.h"
+#include <set>
 
 using namespace llvm;