Adjust includes in MCTargetDesc to avoid unnecessary CodeGen deps, NFC

These are small include-only changes in the X86, Mips, and SystemZ
backend that seem sufficiently small to commit separately without
review.

See issue #64166 for more information about layering.

Author: rnk

llvm/lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp

@@ -7,10 +7,9 @@
 //===----------------------------------------------------------------------===//
 
 #include "MipsABIInfo.h"
-#include "MipsRegisterInfo.h"
+#include "Mips.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/CodeGen/LowLevelType.h"
-#include "llvm/CodeGen/MachineMemOperand.h"
 #include "llvm/MC/MCTargetOptions.h"
 #include "llvm/Support/CommandLine.h"
 

llvm/lib/Target/Mips/MCTargetDesc/MipsInstPrinter.cpp

@@ -11,12 +11,13 @@
 //===----------------------------------------------------------------------===//
 
 #include "MipsInstPrinter.h"
-#include "MipsInstrInfo.h"
+#include "Mips.h"
 #include "MipsMCExpr.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"

llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp

@@ -16,10 +16,10 @@
 #include "MipsInstPrinter.h"
 #include "MipsMCExpr.h"
 #include "MipsMCTargetDesc.h"
-#include "MipsTargetObjectFile.h"
 #include "llvm/BinaryFormat/ELF.h"
 #include "llvm/MC/MCAssembler.h"
 #include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCSectionELF.h"
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCSymbolELF.h"

llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCCodeEmitter.cpp

@@ -12,7 +12,6 @@
 
 #include "MCTargetDesc/SystemZMCFixups.h"
 #include "MCTargetDesc/SystemZMCTargetDesc.h"
-#include "SystemZInstrInfo.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/MC/MCCodeEmitter.h"
 #include "llvm/MC/MCContext.h"

llvm/lib/Target/X86/MCTargetDesc/X86MnemonicTables.cpp

@@ -10,7 +10,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "X86InstrInfo.h"
+#include "X86BaseInfo.h"
 
 #define GET_X86_MNEMONIC_TABLES_CPP
 #include "X86GenMnemonicTables.inc"