[JIT]: Fix compilation

src/backend/core/interpreter/decode.cpp

@@ -301,7 +301,7 @@ void Interpreter::Exec(const u32 instr) {
     lui(instr);
     break;
   case COP0:
-    regs.cop0.decode(*this, instr);
+    regs.cop0.decode(instr);
     break;
   case COP1:
     {

src/backend/core/jit/decode.cpp

@@ -270,7 +270,7 @@ void JIT::Emit(const u32 instr) {
     lui(instr);
     break;
   case COP0:
-    regs.cop0.decode(*this, instr);
+    Util::panic("[JIT]: Unimplemented Cop0 decode");
     break;
   case COP1:
     {

src/backend/core/registers/Cop0.cpp

@@ -451,18 +451,7 @@ ExceptionCode Cop0::GetTLBExceptionCode(const TLBError error, const TLBAccessTyp
   }
 }
 
-template <class T>
-void Cop0::decode(T &cpu, u32 instr) {
-  if constexpr (std::is_same_v<decltype(cpu), Interpreter &>) {
-    decodeInterp(instr);
-  } else {
-    Util::panic("What the fuck did you just give me?!!");
-  }
-}
-
-template void Cop0::decode<Interpreter>(Interpreter &, u32);
-
-void Cop0::decodeInterp(const u32 instr) {
+void Cop0::decode(const u32 instr) {
   const u8 mask_cop = instr >> 21 & 0x1F;
   const u8 mask_cop2 = instr & 0x3F;
   switch (mask_cop) {

src/backend/core/registers/Cop0.hpp

@@ -229,8 +229,7 @@ struct Cop0 {
   TLBEntry tlb[32]{};
   TLBError tlbError = NONE;
   s64 openbus{};
-  template <class T>
-  void decode(T &, u32);
+
   [[nodiscard]] FORCE_INLINE u32 GetRandom() const {
     u32 val = rand();
     const auto wired_ = GetWired();
@@ -270,13 +269,13 @@ struct Cop0 {
   TLBEntry *TLBTryMatch(u64 vaddr) const;
   void HandleTLBException(u64 vaddr) const;
   static ExceptionCode GetTLBExceptionCode(TLBError error, TLBAccessType accessType);
+  void decode(u32);
 
 private:
   Registers &regs;
   [[nodiscard]] FORCE_INLINE u32 GetWired() const { return wired & 0x3F; }
   [[nodiscard]] FORCE_INLINE u32 GetCount() const { return u32(u64(count >> 1)); }
 
-  void decodeInterp(u32);
   void mtc0(u32);
   void dmtc0(u32);
   void mfc0(u32);