[SystemZ] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 292983

1 files changed, 20 insertions, 7 deletions

diff --git a/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp b/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
index 33fdb8f9082..ede5005fa49 100644
--- a/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -7,14 +7,25 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "MCTargetDesc/SystemZMCTargetDesc.h"
+#include "SystemZ.h"
+#include "SystemZMachineScheduler.h"
 #include "SystemZTargetMachine.h"
 #include "SystemZTargetTransformInfo.h"
-#include "SystemZMachineScheduler.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/CodeGen/Passes.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "llvm/CodeGen/TargetPassConfig.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/Support/CodeGen.h"
 #include "llvm/Support/TargetRegistry.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Transforms/Scalar.h"
-#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include <string>
 
 using namespace llvm;
 
@@ -48,7 +59,7 @@ static bool UsesVectorABI(StringRef CPU, StringRef FS) {
 static std::string computeDataLayout(const Triple &TT, StringRef CPU,
                                      StringRef FS) {
   bool VectorABI = UsesVectorABI(CPU, FS);
-  std::string Ret = "";
+  std::string Ret;
 
   // Big endian.
   Ret += "E";
@@ -96,14 +107,15 @@ SystemZTargetMachine::SystemZTargetMachine(const Target &T, const Triple &TT,
                                            CodeGenOpt::Level OL)
     : LLVMTargetMachine(T, computeDataLayout(TT, CPU, FS), TT, CPU, FS, Options,
                         getEffectiveRelocModel(RM), CM, OL),
-      TLOF(make_unique<TargetLoweringObjectFileELF>()),
+      TLOF(llvm::make_unique<TargetLoweringObjectFileELF>()),
       Subtarget(TT, CPU, FS, *this) {
   initAsmInfo();
 }
 
-SystemZTargetMachine::~SystemZTargetMachine() {}
+SystemZTargetMachine::~SystemZTargetMachine() = default;
 
 namespace {
+
 /// SystemZ Code Generator Pass Configuration Options.
 class SystemZPassConfig : public TargetPassConfig {
 public:
@@ -116,7 +128,8 @@ public:
 
   ScheduleDAGInstrs *
   createPostMachineScheduler(MachineSchedContext *C) const override {
-    return new ScheduleDAGMI(C, make_unique<SystemZPostRASchedStrategy>(C),
+    return new ScheduleDAGMI(C,
+                             llvm::make_unique<SystemZPostRASchedStrategy>(C),
                              /*RemoveKillFlags=*/true);
   }
 
@@ -126,6 +139,7 @@ public:
   void addPreSched2() override;
   void addPreEmitPass() override;
 };
+
 } // end anonymous namespace
 
 void SystemZPassConfig::addIRPasses() {
@@ -157,7 +171,6 @@ void SystemZPassConfig::addPreSched2() {
 }
 
 void SystemZPassConfig::addPreEmitPass() {
-
   // Do instruction shortening before compare elimination because some
   // vector instructions will be shortened into opcodes that compare
   // elimination recognizes.