Optimize libretro-snes9x2005 core (#88)

package/libretro-snes9x2005/0001-optimize-flags.patch

@@ -0,0 +1,69 @@
+diff --git a/Makefile b/Makefile
+index 07d5368..a64871b 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,8 +1,8 @@
+ DEBUG                 = 0
+ PERF_TEST             = 0
+-LOAD_FROM_MEMORY      = 1
++LOAD_FROM_MEMORY      = 0
+ USE_BLARGG_APU       ?= 0
+-LAGFIX                = 1
++LAGFIX                = 0
+ USE_OLD_COLOUR_OPS    = 0
+ 
+ SPACE :=
+@@ -282,11 +282,26 @@ else ifeq ($(platform), miyoo)
+ 	CC = /opt/miyoo/usr/bin/arm-linux-gcc
+    	CXX = /opt/miyoo/usr/bin/arm-linux-g++
+    	AR = /opt/miyoo/usr/bin/arm-linux-ar
+-	fpic := -fPIC -nostdlib
++	fpic :=
+ 	SHARED := -shared -Wl,--version-script=link.T
+ 	LIBM :=
+-	FLAGS += -fomit-frame-pointer -ffast-math -march=armv5te -mtune=arm926ej-s
+-	FLAGS += -DFAST_ALIGNED_LSB_WORD_ACCESS -fno-unroll-loops
++	CFLAGS += -fomit-frame-pointer -ffast-math -flto -mcpu=arm926ej-s \
++        -Ofast -msoft-float -finline-limit=42 -fno-unroll-loops \
++        -fno-ipa-cp -fno-common -fno-stack-protector -fno-guess-branch-probability \
++        -fno-caller-saves -fno-regmove -flto=4 -fwhole-program -fuse-linker-plugin \
++        -fdata-sections -ffunction-sections -Wl,--gc-sections \
++        -fno-stack-protector -fno-ident -fomit-frame-pointer \
++        -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
++        -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-unroll-loops \
++        -fmerge-all-constants -fno-math-errno \
++        -marm
++	CXXFLAGS += $(CFLAGS)
++	CPPFLAGS += $(CFLAGS)
++	ASFLAGS += $(CFLAGS)
++	HAVE_NEON = 0
++	ARCH = arm
++	USE_DYNAREC = 1
++   CFLAGS += -DFAST_ALIGNED_LSB_WORD_ACCESS
+ 
+ # (armv7 a7, hard point, neon based) ### 
+ # NESC, SNESC, C64 mini 
+@@ -578,7 +593,7 @@ endif
+ ifeq ($(DEBUG),1)
+ 	FLAGS += -O0 -g
+ else
+-	FLAGS += -O2 -DNDEBUG
++	FLAGS += -O3 -DNDEBUG
+ endif
+ 
+ ifneq (,$(findstring msvc,$(platform)))
+diff --git a/libretro.c b/libretro.c
+index f64b71c..c62a12e 100644
+--- a/libretro.c
++++ b/libretro.c
+@@ -71,8 +71,8 @@ static unsigned frameskip_type             = 0;
+ static unsigned frameskip_threshold        = 0;
+ static uint16_t frameskip_counter          = 0;
+ 
+-static bool retro_audio_buff_active        = false;
+-static unsigned retro_audio_buff_occupancy = 0;
++static bool retro_audio_buff_active        = true;
++static unsigned retro_audio_buff_occupancy = 64;
+ static bool retro_audio_buff_underrun      = false;
+ /* Maximum number of consecutive frames that
+  * can be skipped */

package/libretro-snes9x2005/libretro-snes9x2005.mk

@@ -11,24 +11,18 @@ LIBRETRO_SNES9X2005_LICENSE = COPYRIGHT
 LIBRETRO_SNES9X2005_LICENSE_FILES = copyright
 LIBRETRO_SNES9X2005_NON_COMMERCIAL = y
 
-# Dynarec on all boards
-LIBRETRO_SNES9X2005_SUPP_OPT=USE_DYNAREC=1
-
-LIBRETRO_SNES9X2005_SUPP_CFLAGS+=-Wa,-mimplicit-it=thumb
-LIBRETRO_SNES9X2005_SUPP_OPT+=ARCH=arm
-
 define LIBRETRO_SNES9X2005_BUILD_CMDS
 	$(SED) "s|-O2|-O3|g" $(@D)/Makefile
 	CFLAGS="$(TARGET_CFLAGS) $(COMPILER_COMMONS_CFLAGS_SO) $(LIBRETRO_SNES9X2005_SUPP_CFLAGS)" \
 		CXXFLAGS="$(TARGET_CXXFLAGS) $(COMPILER_COMMONS_CXXFLAGS_SO) $(LIBRETRO_SNES9X2005_SUPP_CFLAGS)" \
 		LDFLAGS="$(TARGET_LDFLAGS) $(COMPILER_COMMONS_LDFLAGS_SO)" \
-		$(MAKE) CXX="$(TARGET_CXX)" CC="$(TARGET_CC)" -C $(@D) platform="$(RETROARCH_LIBRETRO_PLATFORM)" $(LIBRETRO_SNES9X2005_SUPP_OPT) USE_BLARGG_APU=1
+		$(MAKE) CXX="$(TARGET_CXX)" CC="$(TARGET_CC)" -C $(@D) platform="$(RETROARCH_LIBRETRO_PLATFORM)" $(LIBRETRO_SNES9X2005_SUPP_OPT) USE_BLARGG_APU=0
 		$(TARGET_STRIP) --strip-unneeded $(@D)/*_libretro.so
 endef
 
 define LIBRETRO_SNES9X2005_INSTALL_TARGET_CMDS
     mkdir -p "${BINARIES_DIR}/retroarch/cores"
-	$(INSTALL) -D $(@D)/snes9x2005_plus_libretro.so \
+	$(INSTALL) -D $(@D)/snes9x2005_libretro.so \
 		${BINARIES_DIR}/retroarch/cores/snes9x2005_libretro.so
 endef