From: Luca Barbato <lu_zero@gentoo.org>
Date: Sat, 15 Dec 2007 23:38:16 +0000 (+0100)
Subject: Merge branch 'master' of git://anongit.freedesktop.org/pixman
X-Git-Tag: 1.0_branch~1335^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=49240111dbb31c335856f9653544a039275bf033;p=profile%2Fivi%2Fpixman.git

Merge branch 'master' of git://anongit.freedesktop.org/pixman
---

49240111dbb31c335856f9653544a039275bf033
diff --cc configure.ac
index b6a9732,b1c2015..394ce72
--- a/configure.ac
+++ b/configure.ac
@@@ -114,44 -130,44 +130,79 @@@ f
  
  AM_CONDITIONAL(USE_MMX, test $have_mmx_intrinsics = yes)
  
+ dnl =======================================================
+ 
+ dnl GCC 4.2 when compiling with -msse will generate SSE instructions
+ dnl on its own.  This means anything compiled with -mss can only be
+ dnl run after a runtime check for SSE.  Unfortunately, since we still
+ dnl need to support MMX-but-not-SSE (such as the OLPC), this means we
+ dnl can only use SSE when compiling for x86-64 (where SSE is always
+ dnl supported).
+ 
+ have_sse_intrinsics=no
+ AC_MSG_CHECKING(whether to use SSE intrinsics)
+ xserver_save_CFLAGS=$CFLAGS
+ CFLAGS="$CFLAGS -msse $MMX_CFLAGS"
+ 
+ AC_COMPILE_IFELSE([
+ #if !defined(__amd64__) && !defined(__x86_64__)
+ #error "Need x86-64 for SSE"
+ #endif
+ #include <mmintrin.h>
+ #include <xmmintrin.h>
+ int main () {
+     __m64 v = _mm_cvtsi32_si64 (1);
+     v = _mm_shuffle_pi16 (v, _MM_SHUFFLE(3, 3, 3, 3));
+     return _mm_cvtsi64_si32 (v);
+ }], have_sse_intrinsics=yes)
+ CFLAGS=$xserver_save_CFLAGS
+ AC_MSG_RESULT($have_sse_intrinsics)
+ 
+ if test $have_sse_intrinsics = yes ; then
+    AC_DEFINE(USE_SSE, 1, [use SSE compiler intrinsics])
+    MMX_CFLAGS="-msse $MMX_CFLAGS"
+ fi
+ 
+ AM_CONDITIONAL(USE_SSE, test $have_sse_intrinsics = yes)
+ 
  dnl ========================================================
+ AC_SUBST(MMX_CFLAGS)
  
 +dnl Check for VMX/Altivec
 +if test -n "`$CC -v 2>&1 | grep version | grep Apple`"; then
 +    VMX_CFLAGS="-faltivec"
 +else
 +    VMX_CFLAGS="-maltivec -mabi=altivec"
 +fi
 +
 +have_vmx_intrinsics=no
 +AC_MSG_CHECKING(For VMX/Altivec intrinsics in the compiler)
 +xserver_save_CFLAGS=$CFLAGS
 +CFLAGS="$CFLAGS $VMX_CFLAGS"
 +AC_COMPILE_IFELSE([
 +#if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
 +#error "Need GCC >= 3.4 for sane altivec support"
 +#endif
 +#include <altivec.h>
 +int main () {
 +    vector unsigned int v = vec_splat_u32 (1);
 +    v = vec_sub (v, v);
 +    return 0;
 +}], have_vmx_intrinsics=yes)
 +CFLAGS=$xserver_save_CFLAGS
 +AC_MSG_RESULT($have_vmx_intrinsics)
 +
 +if test $have_vmx_intrinsics = yes ; then
 +   AC_DEFINE(USE_VMX, 1, [use VMX compiler intrinsics])
 +else
 +   VMX_CFLAGS=
 +fi
 +AC_SUBST(VMX_CFLAGS)
 +
 +AM_CONDITIONAL(USE_VMX, test $have_vmx_intrinsics = yes)
 +
 +dnl ===========================================================================
 +
  PKG_CHECK_MODULES(GTK, [gtk+-2.0], [HAVE_GTK=yes], [HAVE_GTK=no])
  AM_CONDITIONAL(HAVE_GTK, [test "x$HAVE_GTK" = xyes])