kc3-lang/SDL

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 00e1e46..65d7cc2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -262,6 +262,7 @@ set_option(MMX                 "Use MMX assembly routines" ${OPT_DEF_ASM})
 set_option(3DNOW               "Use 3Dnow! MMX assembly routines" ${OPT_DEF_ASM})
 set_option(SSE                 "Use SSE assembly routines" ${OPT_DEF_ASM})
 set_option(SSE2                "Use SSE2 assembly routines" ${OPT_DEF_SSEMATH})
+set_option(SSE3                "Use SSE3 assembly routines" ${OPT_DEF_SSEMATH})
 set_option(ALTIVEC             "Use Altivec assembly routines" ${OPT_DEF_ASM})
 set_option(DISKAUDIO           "Support the disk writer audio driver" ON)
 set_option(DUMMYAUDIO          "Support the dummy audio driver" ON)
@@ -516,8 +517,31 @@ if(ASSEMBLY)
       set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
     endif()
 
+    if(SSE3)
+      set(CMAKE_REQUIRED_FLAGS "-msse3")
+      check_c_source_compiles("
+          #ifdef __MINGW32__
+          #include <_mingw.h>
+          #ifdef __MINGW64_VERSION_MAJOR
+          #include <intrin.h>
+          #else
+          #include <pmmintrin.h>
+          #endif
+          #else
+          #include <pmmintrin.h>
+          #endif
+          #ifndef __SSE3__
+          #error Assembler CPP flag not enabled
+          #endif
+          int main(int argc, char **argv) { }" HAVE_SSE3)
+      if(HAVE_SSE3)
+        list(APPEND EXTRA_CFLAGS "-msse3")
+      endif()
+      set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
+    endif()
+
     if(SSEMATH)
-      if(SSE OR SSE2)
+      if(SSE OR SSE2 OR SSE3)
         if(USE_GCC)
           list(APPEND EXTRA_CFLAGS "-mfpmath=387")
         endif()
@@ -557,12 +581,13 @@ if(ASSEMBLY)
     endif()
     set(HAVE_SSE TRUE)
     set(HAVE_SSE2 TRUE)
+    set(HAVE_SSE3 TRUE)
     set(SDL_ASSEMBLY_ROUTINES 1)
   endif()
 # TODO:
 #else()
 #  if(USE_GCC OR USE_CLANG)
-#    list(APPEND EXTRA_CFLAGS "-mno-sse" "-mno-sse2" "-mno-mmx")
+#    list(APPEND EXTRA_CFLAGS "-mno-sse" "-mno-sse2" "-mno-sse3" "-mno-mmx")
 #  endif()
 endif()
 
diff --git a/configure b/configure
index 9c93953..a0ff763 100755
--- a/configure
+++ b/configure
@@ -798,6 +798,7 @@ enable_mmx
 enable_3dnow
 enable_sse
 enable_sse2
+enable_sse3
 enable_altivec
 enable_oss
 enable_alsa
@@ -1527,7 +1528,8 @@ Optional Features:
   --enable-mmx            use MMX assembly routines [[default=yes]]
   --enable-3dnow          use 3DNow! assembly routines [[default=yes]]
   --enable-sse            use SSE assembly routines [[default=yes]]
-  --enable-sse2           use SSE2 assembly routines [[default=no]]
+  --enable-sse2           use SSE2 assembly routines [[default=maybe]]
+  --enable-sse3           use SSE3 assembly routines [[default=maybe]]
   --enable-altivec        use Altivec assembly routines [[default=yes]]
   --enable-oss            support the OSS audio API [[default=maybe]]
   --enable-alsa           support the ALSA audio API [[default=yes]]
@@ -17308,6 +17310,63 @@ $as_echo "$have_gcc_sse2" >&6; }
         fi
     fi
 
+    # Check whether --enable-sse3 was given.
+if test "${enable_sse3+set}" = set; then :
+  enableval=$enable_sse3;
+else
+  enable_sse3=$default_ssemath
+fi
+
+    if test x$enable_sse3 = xyes; then
+        save_CFLAGS="$CFLAGS"
+        have_gcc_sse3=no
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GCC -msse3 option" >&5
+$as_echo_n "checking for GCC -msse3 option... " >&6; }
+        sse3_CFLAGS="-msse3"
+        CFLAGS="$save_CFLAGS $sse3_CFLAGS"
+
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+        #ifdef __MINGW32__
+        #include <_mingw.h>
+        #ifdef __MINGW64_VERSION_MAJOR
+        #include <intrin.h>
+        #else
+        #include <pmmintrin.h>
+        #endif
+        #else
+        #include <pmmintrin.h>
+        #endif
+        #ifndef __SSE2__
+        #error Assembler CPP flag not enabled
+        #endif
+
+int
+main ()
+{
+
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+        have_gcc_sse3=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_gcc_sse3" >&5
+$as_echo "$have_gcc_sse3" >&6; }
+        CFLAGS="$save_CFLAGS"
+
+        if test x$have_gcc_sse3 = xyes; then
+            EXTRA_CFLAGS="$EXTRA_CFLAGS $sse3_CFLAGS"
+            SUMMARY_math="${SUMMARY_math} sse3"
+        fi
+    fi
+
     # Check whether --enable-altivec was given.
 if test "${enable_altivec+set}" = set; then :
   enableval=$enable_altivec;
diff --git a/configure.in b/configure.in
index 073c152..9eacefa 100644
--- a/configure.in
+++ b/configure.in
@@ -593,7 +593,7 @@ AC_HELP_STRING([--enable-sse], [use SSE assembly routines [[default=yes]]]),
     fi
 
     AC_ARG_ENABLE(sse2,
-AC_HELP_STRING([--enable-sse2], [use SSE2 assembly routines [[default=no]]]),
+AC_HELP_STRING([--enable-sse2], [use SSE2 assembly routines [[default=maybe]]]),
                   , enable_sse2=$default_ssemath)
     if test x$enable_sse2 = xyes; then
         save_CFLAGS="$CFLAGS"
@@ -629,6 +629,43 @@ AC_HELP_STRING([--enable-sse2], [use SSE2 assembly routines [[default=no]]]),
         fi
     fi
 
+    AC_ARG_ENABLE(sse3,
+AC_HELP_STRING([--enable-sse3], [use SSE3 assembly routines [[default=maybe]]]),
+                  , enable_sse3=$default_ssemath)
+    if test x$enable_sse3 = xyes; then
+        save_CFLAGS="$CFLAGS"
+        have_gcc_sse3=no
+        AC_MSG_CHECKING(for GCC -msse3 option)
+        sse3_CFLAGS="-msse3"
+        CFLAGS="$save_CFLAGS $sse3_CFLAGS"
+
+        AC_TRY_COMPILE([
+        #ifdef __MINGW32__
+        #include <_mingw.h>
+        #ifdef __MINGW64_VERSION_MAJOR
+        #include <intrin.h>
+        #else
+        #include <pmmintrin.h>
+        #endif
+        #else
+        #include <pmmintrin.h>
+        #endif
+        #ifndef __SSE2__
+        #error Assembler CPP flag not enabled
+        #endif
+        ],[
+        ],[
+        have_gcc_sse3=yes
+        ])
+        AC_MSG_RESULT($have_gcc_sse3)
+        CFLAGS="$save_CFLAGS"
+
+        if test x$have_gcc_sse3 = xyes; then
+            EXTRA_CFLAGS="$EXTRA_CFLAGS $sse3_CFLAGS"
+            SUMMARY_math="${SUMMARY_math} sse3"
+        fi
+    fi
+
     AC_ARG_ENABLE(altivec,
 AC_HELP_STRING([--enable-altivec], [use Altivec assembly routines [[default=yes]]]),
                   , enable_altivec=yes)
diff --git a/include/SDL_cpuinfo.h b/include/SDL_cpuinfo.h
index 3b260f1..25e2ff4 100644
--- a/include/SDL_cpuinfo.h
+++ b/include/SDL_cpuinfo.h
@@ -61,6 +61,9 @@
 #ifdef __SSE2__
 #include <emmintrin.h>
 #endif
+#ifdef __SSE3__
+#include <pmmintrin.h>
+#endif
 #endif
 
 #include "begin_code.h"
diff --git a/src/audio/SDL_audiocvt.c b/src/audio/SDL_audiocvt.c
index 85196b1..7a915a6 100644
--- a/src/audio/SDL_audiocvt.c
+++ b/src/audio/SDL_audiocvt.c
@@ -28,13 +28,10 @@
 #include "SDL_loadso.h"
 #include "SDL_assert.h"
 #include "../SDL_dataqueue.h"
-
-/* !!! FIXME: wire this up to the configure script, etc. */
 #include "SDL_cpuinfo.h"
-#define HAVE_SSE3_INTRINSICS 0
 
-#if HAVE_SSE3_INTRINSICS
-#include <pmmintrin.h>
+#ifdef __SSE3__
+#define HAVE_SSE3_INTRINSICS 1
 #endif
 
 #if HAVE_SSE3_INTRINSICS
diff --git a/src/audio/SDL_audiotypecvt.c b/src/audio/SDL_audiotypecvt.c
index 505e25a..91e9c64 100644
--- a/src/audio/SDL_audiotypecvt.c
+++ b/src/audio/SDL_audiotypecvt.c
@@ -28,11 +28,8 @@
 /* !!! FIXME: write NEON code. */
 #define HAVE_NEON_INTRINSICS 0
 
-/* !!! FIXME: wire this up to the configure script, etc. */
-#define HAVE_SSE2_INTRINSICS 0
-
-#if HAVE_SSE2_INTRINSICS
-#include <emmintrin.h>
+#ifdef __SSE2__
+#define HAVE_SSE2_INTRINSICS 1
 #endif
 
 #if defined(__x86_64__) && HAVE_SSE2_INTRINSICS