Refactor the JIT to be object-oriented (#1879)

* Move TinyVector to a new file

- So it's less sensitive to #include ordering

* Forgot to include assert.h

* Refactor ARMJIT_Memory into an object

* Oops, forgot a declaration

* Refactor ARMJIT to be contained in an object

* Remove an unused function declaration

* Add a missing #include

* Remove a now-unused global

* Use ARMJIT_Memory's own memory access functions

* Fix some omissions in the ARM JIT

* Move libandroid to be a member of ARMJIT_Memory instead of a global

* Default-initialize most fields in ARMJIT_Compiler.h

* Define NOOP_IF_NO_JIT

* Finish refactoring the JIT to be object-oriented

src/ARMJIT_x64/ARMJIT_Compiler.h

@@ -21,7 +21,6 @@
 
 #include "../dolphin/x64Emitter.h"
 
-#include "../ARMJIT.h"
 #include "../ARMJIT_Internal.h"
 #include "../ARMJIT_RegisterCache.h"
 
@@ -31,9 +30,11 @@
 
 #include <unordered_map>
 
+class ARMJIT_Memory;
+
 namespace ARMJIT
 {
-
+class ARMJIT;
 const Gen::X64Reg RCPU = Gen::RBP;
 const Gen::X64Reg RCPSR = Gen::R15;
 
@@ -79,7 +80,11 @@ struct Op2
 class Compiler : public Gen::XEmitter
 {
 public:
-    Compiler();
+#ifdef JIT_ENABLED
+    explicit Compiler(ARMJIT& jit);
+#else
+    explicit Compiler(ARMJIT& jit) : XEmitter(), JIT(jit) {}
+#endif
 
     void Reset();
 
@@ -238,42 +243,43 @@ public:
     void CreateMethod(const char* namefmt, void* start, ...);
 #endif
 
-    u8* FarCode;
-    u8* NearCode;
-    u32 FarSize;
-    u32 NearSize;
+    ARMJIT& JIT;
+    u8* FarCode {};
+    u8* NearCode {};
+    u32 FarSize {};
+    u32 NearSize {};
 
-    u8* NearStart;
-    u8* FarStart;
+    u8* NearStart {};
+    u8* FarStart {};
 
-    void* PatchedStoreFuncs[2][2][3][16];
-    void* PatchedLoadFuncs[2][2][3][2][16];
+    void* PatchedStoreFuncs[2][2][3][16] {};
+    void* PatchedLoadFuncs[2][2][3][2][16] {};
 
-    std::unordered_map<u8*, LoadStorePatch> LoadStorePatches;
+    std::unordered_map<u8*, LoadStorePatch> LoadStorePatches {};
 
-    u8* ResetStart;
-    u32 CodeMemSize;
+    u8* ResetStart {};
+    u32 CodeMemSize {};
 
-    bool Exit;
-    bool IrregularCycles;
+    bool Exit {};
+    bool IrregularCycles {};
 
-    void* ReadBanked;
-    void* WriteBanked;
+    void* ReadBanked {};
+    void* WriteBanked {};
 
     bool CPSRDirty = false;
 
-    FetchedInstr CurInstr;
+    FetchedInstr CurInstr {};
 
-    RegisterCache<Compiler, Gen::X64Reg> RegCache;
+    RegisterCache<Compiler, Gen::X64Reg> RegCache {};
 
-    bool Thumb;
-    u32 Num;
-    u32 R15;
-    u32 CodeRegion;
+    bool Thumb {};
+    u32 Num {};
+    u32 R15 {};
+    u32 CodeRegion {};
 
-    u32 ConstantCycles;
+    u32 ConstantCycles {};
 
-    ARM* CurCPU;
+    ARM* CurCPU {};
 };
 
 }