Enable O3, switch to IR JIT

Author: ethanaobrien

libretro/Makefile

@@ -304,6 +304,7 @@ else ifeq ($(platform), emscripten)
 	GLES = 1
 	TARGET := $(TARGET_NAME)_libretro_emscripten.bc
 	PLATCFLAGS += -msimd128 -msse3 -mssse3 -msse4.1 -pthread -D__EMSCRIPTEN__ -DNO_MMAP
+	PLATCFLAGS += -O3
 	PLATFORM_EXT = emscripten
 	STATIC_LINKING = 1
 

libretro/emscripten/build_emscripten.sh

@@ -1,25 +1,19 @@
 #!/bin/bash
+set -e
 
 cd "$(dirname "$0")"
-
 cd ../../
 
 git submodule update --init --recursive
 
-#Build emscripten ffmpeg
-
 cd ffmpeg
 cp ../libretro/emscripten/linux_wasm32.sh ./
 bash linux_wasm32.sh
 cd ../
 
-#GetElfHwcapFromGetauxval - Always return "1" (Idk what this function actually does)
-
 sed -i 's|return getauxval(hwcap_type);|return 1;|g' ext/cpu_features/src/hwcaps.c
 sed -i 's|#include <sys/auxv.h>||g' ext/cpu_features/src/hwcaps.c
 
-#filesystem dependency - update to latest
-
 cd ext/armips/ext/
 rm -rf filesystem
 git clone https://github.com/gulrak/filesystem.git filesystem

libretro/libretro.cpp

@@ -528,7 +528,6 @@ static void check_variables(CoreParameter &coreParam)
          g_Config.iLanguage = PSP_SYSTEMPARAM_LANGUAGE_CHINESE_SIMPLIFIED;
    }
 
-#ifndef __EMSCRIPTEN__
    var.key = "ppsspp_cpu_core";
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
    {
@@ -546,9 +545,6 @@ static void check_variables(CoreParameter &coreParam)
        // to experiment in future iOS versions or something...
        g_Config.iCpuCore = (int)CPUCore::IR_INTERPRETER;
    }
-#else
-   g_Config.iCpuCore = (int)CPUCore::INTERPRETER;
-#endif
 
    var.key = "ppsspp_fast_memory";
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
@@ -1499,9 +1495,11 @@ bool retro_load_game(const struct retro_game_info *game)
 
    useEmuThread              = ctx->GetGPUCore() == GPUCORE_GLES;
 
-   // default to interpreter to allow startup in platforms w/o JIT capability
-   // TODO: I guess we should auto detect? And also, default to IR Interpreter...
+#ifdef __EMSCRIPTEN__
+   g_Config.iCpuCore         = (int)CPUCore::IR_INTERPRETER;
+#else
    g_Config.iCpuCore         = (int)CPUCore::INTERPRETER;
+#endif
 
    CoreParameter coreParam   = {};
    coreParam.enableSound     = true;
@@ -1990,6 +1988,8 @@ bool System_GetPropertyBool(SystemProperty prop)
 #if PPSSPP_PLATFORM(IOS)
       bool can_jit;
       return (environ_cb(RETRO_ENVIRONMENT_GET_JIT_CAPABLE, &can_jit) && can_jit);
+#elif defined(__EMSCRIPTEN__)
+      return false;
 #else
       return true;
 #endif

libretro/libretro_core_options.h

@@ -136,7 +136,7 @@ struct retro_core_option_v2_definition option_defs_us[] = {
          { NULL, NULL },
       },
 #ifdef __EMSCRIPTEN__
-      "Interpreter"
+      "IR JIT"
 #else
       "JIT"
 #endif