[ARC] 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: 360716

lib/Target/ARC/ARCAsmPrinter.cpp

@@ -18,6 +18,7 @@
 #include "ARCTargetMachine.h"
 #include "ARCTargetStreamer.h"
 #include "MCTargetDesc/ARCInstPrinter.h"
+#include "TargetInfo/ARCTargetInfo.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/CodeGen/AsmPrinter.h"

lib/Target/ARC/ARCTargetMachine.cpp

@@ -12,6 +12,7 @@
 #include "ARCTargetMachine.h"
 #include "ARC.h"
 #include "ARCTargetTransformInfo.h"
+#include "TargetInfo/ARCTargetInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "llvm/CodeGen/TargetPassConfig.h"

lib/Target/ARC/Disassembler/ARCDisassembler.cpp

@@ -14,6 +14,7 @@
 #include "ARC.h"
 #include "ARCRegisterInfo.h"
 #include "MCTargetDesc/ARCMCTargetDesc.h"
+#include "TargetInfo/ARCTargetInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCDisassembler/MCDisassembler.h"
 #include "llvm/MC/MCFixedLenDisassembler.h"

lib/Target/ARC/MCTargetDesc/ARCMCTargetDesc.cpp

@@ -14,6 +14,7 @@
 #include "ARCInstPrinter.h"
 #include "ARCMCAsmInfo.h"
 #include "ARCTargetStreamer.h"
+#include "TargetInfo/ARCTargetInfo.h"
 #include "llvm/MC/MCDwarf.h"
 #include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"

lib/Target/ARC/MCTargetDesc/ARCMCTargetDesc.h

@@ -19,8 +19,6 @@ namespace llvm {
 
 class Target;
 
-Target &getTheARCTarget();
-
 } // end namespace llvm
 
 // Defines symbolic names for ARC registers.  This defines a mapping from

lib/Target/ARC/TargetInfo/ARCTargetInfo.cpp

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

lib/Target/ARC/TargetInfo/ARCTargetInfo.h

@@ -0,0 +1,20 @@
+//===- ARCTargetInfo.h - ARC 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_ARC_TARGETINFO_ARCTARGETINFO_H
+#define LLVM_LIB_TARGET_ARC_TARGETINFO_ARCTARGETINFO_H
+
+namespace llvm {
+
+class Target;
+
+Target &getTheARCTarget();
+
+} // namespace llvm
+
+#endif // LLVM_LIB_TARGET_ARC_TARGETINFO_ARCTARGETINFO_H