[NFC][MC][CodeEmitterGen] Extract error reporting into a helper function (#159778)

Extract error reporting code emitted by CodeEmitterGen into
MCCodeEmitter static members functions.
Additionally, remove unused ErrorHandling.h header from several files.

Author: jurahul

llvm/include/llvm/MC/MCCodeEmitter.h

@@ -16,7 +16,6 @@ namespace llvm {
 class MCFixup;
 class MCInst;
 class MCSubtargetInfo;
-class raw_ostream;
 template<typename T> class SmallVectorImpl;
 
 /// MCCodeEmitter - Generic instruction encoding interface.
@@ -36,6 +35,12 @@ class LLVM_ABI MCCodeEmitter {
   virtual void encodeInstruction(const MCInst &Inst, SmallVectorImpl<char> &CB,
                                  SmallVectorImpl<MCFixup> &Fixups,
                                  const MCSubtargetInfo &STI) const = 0;
+
+protected:
+  // Helper function used by CodeEmitterGen for error reporting.
+  [[noreturn]] static void reportUnsupportedInst(const MCInst &Inst);
+  [[noreturn]] static void reportUnsupportedOperand(const MCInst &Inst,
+                                                    unsigned OpNum);
 };
 
 } // end namespace llvm

llvm/lib/MC/MCCodeEmitter.cpp

@@ -7,9 +7,28 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+#include <string>
 
 using namespace llvm;
 
 MCCodeEmitter::MCCodeEmitter() = default;
 
 MCCodeEmitter::~MCCodeEmitter() = default;
+
+void MCCodeEmitter::reportUnsupportedInst(const MCInst &Inst) {
+  std::string Msg;
+  raw_string_ostream OS(Msg);
+  OS << "Unsupported instruction : " << Inst;
+  reportFatalInternalError(Msg.c_str());
+}
+
+void MCCodeEmitter::reportUnsupportedOperand(const MCInst &Inst,
+                                             unsigned OpNum) {
+  std::string Msg;
+  raw_string_ostream OS(Msg);
+  OS << "Unsupported instruction operand : \"" << Inst << "\"[" << OpNum << "]";
+  reportFatalInternalError(Msg.c_str());
+}

llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCCodeEmitter.cpp

@@ -25,7 +25,6 @@
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include <cassert>
 #include <cstdint>
 

llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp

@@ -30,7 +30,6 @@
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/TargetParser/Triple.h"
 #include <cassert>

llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCCodeEmitter.cpp

@@ -25,7 +25,6 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 #include <cassert>
 #include <cstddef>

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

@@ -28,7 +28,6 @@
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 #include <cassert>
 #include <cstdint>

llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp

@@ -22,7 +22,6 @@
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/TargetParser/Triple.h"
 #include <cassert>

llvm/lib/Target/Sparc/MCTargetDesc/SparcMCCodeEmitter.cpp

@@ -28,7 +28,6 @@
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include <cassert>
 #include <cstdint>
 

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

@@ -21,7 +21,6 @@
 #include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/Support/ErrorHandling.h"
 #include <cassert>
 #include <cstdint>
 

llvm/lib/Target/VE/MCTargetDesc/VEMCCodeEmitter.cpp

@@ -25,7 +25,6 @@
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/ErrorHandling.h"
 #include <cassert>
 #include <cstdint>