core: Add configuration option for CPU JIT.

src/citra/config.cpp

@@ -65,6 +65,7 @@ void Config::ReadValues() {
     Settings::values.pad_circle_modifier_scale = (float)sdl2_config->GetReal("Controls", "pad_circle_modifier_scale", 0.5);
 
     // Core
+    Settings::values.use_cpu_jit = sdl2_config->GetBoolean("Core", "use_cpu_jit", true);
     Settings::values.frame_skip = sdl2_config->GetInteger("Core", "frame_skip", 0);
 
     // Renderer

src/citra/default_ini.h

@@ -38,6 +38,10 @@ pad_circle_modifier =
 pad_circle_modifier_scale =
 
 [Core]
+# Whether to use the Just-In-Time (JIT) compiler for CPU emulation
+# 0: Interpreter (slow), 1 (default): JIT (fast)
+use_cpu_jit =
+
 # The applied frameskip amount. Must be a power of two.
 # 0 (default): No frameskip, 1: x2 frameskip, 2: x4 frameskip, 3: x8 frameskip, etc.
 frame_skip =

src/citra_qt/config.cpp

@@ -41,6 +41,7 @@ void Config::ReadValues() {
     qt_config->endGroup();
 
     qt_config->beginGroup("Core");
+    Settings::values.use_cpu_jit = qt_config->value("use_cpu_jit", true).toBool();
     Settings::values.frame_skip = qt_config->value("frame_skip", 0).toInt();
     qt_config->endGroup();
 
@@ -134,6 +135,7 @@ void Config::SaveValues() {
     qt_config->endGroup();
 
     qt_config->beginGroup("Core");
+    qt_config->setValue("use_cpu_jit", Settings::values.use_cpu_jit);
     qt_config->setValue("frame_skip", Settings::values.frame_skip);
     qt_config->endGroup();
 

src/core/core.cpp

@@ -6,16 +6,16 @@
 
 #include "common/logging/log.h"
 
+#include "core/arm/arm_interface.h"
+#include "core/arm/dynarmic/arm_dynarmic.h"
+#include "core/arm/dyncom/arm_dyncom.h"
 #include "core/core.h"
 #include "core/core_timing.h"
-
-#include "core/arm/arm_interface.h"
-#include "core/arm/dyncom/arm_dyncom.h"
+#include "core/gdbstub/gdbstub.h"
 #include "core/hle/hle.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hw/hw.h"
-
-#include "core/gdbstub/gdbstub.h"
+#include "core/settings.h"
 
 namespace Core {
 
@@ -73,8 +73,13 @@ void Stop() {
 
 /// Initialize the core
 void Init() {
+    if (Settings::values.use_cpu_jit) {
+        g_sys_core = std::make_unique<ARM_Dynarmic>(USER32MODE);
+        g_app_core = std::make_unique<ARM_Dynarmic>(USER32MODE);
+    } else {
         g_sys_core = std::make_unique<ARM_DynCom>(USER32MODE);
         g_app_core = std::make_unique<ARM_DynCom>(USER32MODE);
+    }
 
     LOG_DEBUG(Core, "Initialized OK");
 }

src/core/settings.h

@@ -60,6 +60,7 @@ struct Values {
     float pad_circle_modifier_scale;
 
     // Core
+    bool use_cpu_jit;
     int frame_skip;
 
     // Data Storage