Hexagon.h - remove unnecessary includes. NFCI.

Replace with forward declarations and move includes to implicit dependent files.

llvm/lib/Target/Hexagon/Hexagon.h

@@ -14,12 +14,9 @@
 #ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGON_H
 #define LLVM_LIB_TARGET_HEXAGON_HEXAGON_H
 
-#include "MCTargetDesc/HexagonMCTargetDesc.h"
-#include "llvm/CodeGen/TargetLowering.h"
-#include "llvm/Target/TargetMachine.h"
-
 namespace llvm {
   class HexagonTargetMachine;
+  class ImmutablePass;
 
   /// Creates a Hexagon-specific Target Transformation Info pass.
   ImmutablePass *createHexagonTargetTransformInfoPass(const HexagonTargetMachine *TM);

llvm/lib/Target/Hexagon/HexagonCFGOptimizer.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Hexagon.h"
+#include "MCTargetDesc/HexagonMCTargetDesc.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineBranchProbabilityInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"

llvm/lib/Target/Hexagon/HexagonCopyToCombine.cpp

@@ -10,6 +10,7 @@
 // to move them together. If we can move them next to each other we do so and
 // replace them with a combine instruction.
 //===----------------------------------------------------------------------===//
+
 #include "HexagonInstrInfo.h"
 #include "HexagonSubtarget.h"
 #include "llvm/ADT/DenseMap.h"
@@ -26,6 +27,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
 
 using namespace llvm;
 

llvm/lib/Target/Hexagon/HexagonFrameLowering.h

@@ -11,6 +11,7 @@
 
 #include "Hexagon.h"
 #include "HexagonBlockRanges.h"
+#include "MCTargetDesc/HexagonMCTargetDesc.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"

llvm/lib/Target/Hexagon/HexagonISelLowering.h

@@ -15,6 +15,7 @@
 #define LLVM_LIB_TARGET_HEXAGON_HEXAGONISELLOWERING_H
 
 #include "Hexagon.h"
+#include "MCTargetDesc/HexagonMCTargetDesc.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/CodeGen/ISDOpcodes.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"

llvm/lib/Target/Hexagon/HexagonOptimizeSZextends.cpp

@@ -11,7 +11,9 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "Hexagon.h"
 #include "llvm/CodeGen/StackProtector.h"
+#include "llvm/CodeGen/ValueTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
@@ -19,8 +21,6 @@
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Scalar.h"
 
-#include "Hexagon.h"
-
 using namespace llvm;
 
 namespace llvm {

llvm/lib/Target/Hexagon/HexagonSubtarget.cpp

@@ -10,10 +10,10 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "HexagonSubtarget.h"
 #include "Hexagon.h"
 #include "HexagonInstrInfo.h"
 #include "HexagonRegisterInfo.h"
-#include "HexagonSubtarget.h"
 #include "MCTargetDesc/HexagonMCTargetDesc.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallSet.h"
@@ -26,6 +26,7 @@
 #include "llvm/CodeGen/ScheduleDAGInstrs.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Target/TargetMachine.h"
 #include <algorithm>
 #include <cassert>
 #include <map>
@@ -38,7 +39,6 @@ using namespace llvm;
 #define GET_SUBTARGETINFO_TARGET_DESC
 #include "HexagonGenSubtargetInfo.inc"
 
-
 static cl::opt<bool> EnableBSBSched("enable-bsb-sched",
   cl::Hidden, cl::ZeroOrMore, cl::init(true));