[SystemZ] Create a TargetInfo header. NFC

Move the declarations of getThe<Name>Target() functions into a new header in
TargetInfo and make users of these functions include this new header.
This fixes a layering problem.

llvm-svn: 360734

lib/Target/SystemZ/AsmParser/SystemZAsmParser.cpp

@@ -8,6 +8,7 @@
 
 #include "MCTargetDesc/SystemZInstPrinter.h"
 #include "MCTargetDesc/SystemZMCTargetDesc.h"
+#include "TargetInfo/SystemZTargetInfo.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"

lib/Target/SystemZ/Disassembler/SystemZDisassembler.cpp

@@ -8,6 +8,7 @@
 
 #include "MCTargetDesc/SystemZMCTargetDesc.h"
 #include "SystemZ.h"
+#include "TargetInfo/SystemZTargetInfo.h"
 #include "llvm/MC/MCDisassembler/MCDisassembler.h"
 #include "llvm/MC/MCFixedLenDisassembler.h"
 #include "llvm/MC/MCInst.h"

lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp

@@ -9,6 +9,7 @@
 #include "SystemZMCTargetDesc.h"
 #include "SystemZInstPrinter.h"
 #include "SystemZMCAsmInfo.h"
+#include "TargetInfo/SystemZTargetInfo.h"
 #include "llvm/MC/MCDwarf.h"
 #include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"

lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.h

@@ -29,8 +29,6 @@ class Triple;
 class raw_pwrite_stream;
 class raw_ostream;
 
-Target &getTheSystemZTarget();
-
 namespace SystemZMC {
 // How many bytes are in the ABI-defined, caller-allocated part of
 // a stack frame.

lib/Target/SystemZ/SystemZAsmPrinter.cpp

@@ -15,6 +15,7 @@
 #include "MCTargetDesc/SystemZInstPrinter.h"
 #include "SystemZConstantPoolValue.h"
 #include "SystemZMCInstLower.h"
+#include "TargetInfo/SystemZTargetInfo.h"
 #include "llvm/CodeGen/MachineModuleInfoImpls.h"
 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "llvm/IR/Mangler.h"

lib/Target/SystemZ/SystemZTargetMachine.cpp

@@ -11,6 +11,7 @@
 #include "SystemZ.h"
 #include "SystemZMachineScheduler.h"
 #include "SystemZTargetTransformInfo.h"
+#include "TargetInfo/SystemZTargetInfo.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"

lib/Target/SystemZ/TargetInfo/SystemZTargetInfo.cpp

@@ -6,7 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "SystemZ.h"
+#include "TargetInfo/SystemZTargetInfo.h"
 #include "llvm/Support/TargetRegistry.h"
 
 using namespace llvm;

lib/Target/SystemZ/TargetInfo/SystemZTargetInfo.h

@@ -0,0 +1,20 @@
+//===-- SystemZTargetInfo.h - SystemZ target implementation -----*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_SYSTEMZ_TARGETINFO_SYSTEMZTARGETINFO_H
+#define LLVM_LIB_TARGET_SYSTEMZ_TARGETINFO_SYSTEMZTARGETINFO_H
+
+namespace llvm {
+
+class Target;
+
+Target &getTheSystemZTarget();
+
+} // namespace llvm
+
+#endif // LLVM_LIB_TARGET_SYSTEMZ_TARGETINFO_SYSTEMZTARGETINFO_H