[Pixman] [PATCHv2 2/3] Add empty SSSE3 implementation
Søren Sandmann Pedersen
sandmann at cs.au.dk
Sat Sep 7 15:50:07 PDT 2013
This commit adds a new, empty SSSE3 implementation and the associated
build system support.
configure.ac: detect whether the compiler understands SSSE3
intrinsics and set up the required CFLAGS
Makefile.am: Add libpixman-ssse3.la
pixman-x86.c: Add X86_SSSE3 feature flag and detect it in
detect_cpu_features().
pixman-ssse3.c: New file with an empty SSSE3 implementation
V2: Remove SSSE3_LDFLAGS since it isn't necessary unless Solaris
support is added.
---
configure.ac | 45 ++++++++++++++++++++++++++++++++++++++++++++
pixman/Makefile.am | 12 ++++++++++++
pixman/pixman-private.h | 5 +++++
pixman/pixman-ssse3.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++
pixman/pixman-x86.c | 15 +++++++++++++--
5 files changed, 125 insertions(+), 2 deletions(-)
create mode 100644 pixman/pixman-ssse3.c
diff --git a/configure.ac b/configure.ac
index daf4062..263c63e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -437,6 +437,50 @@ fi
AM_CONDITIONAL(USE_SSE2, test $have_sse2_intrinsics = yes)
dnl ===========================================================================
+dnl Check for SSSE3
+
+if test "x$SSSE3_CFLAGS" = "x" ; then
+ SSSE3_CFLAGS="-mssse3 -Winline"
+fi
+
+have_ssse3_intrinsics=no
+AC_MSG_CHECKING(whether to use SSSE3 intrinsics)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$SSSE3_CFLAGS $CFLAGS"
+
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#include <mmintrin.h>
+#include <xmmintrin.h>
+#include <emmintrin.h>
+#include <tmmintrin.h>
+int main () {
+ __m128i a = _mm_set1_epi32 (0), b = _mm_set1_epi32 (0), c;
+ c = _mm_maddubs_epi16 (a, b);
+ return 0;
+}]])], have_ssse3_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(ssse3,
+ [AC_HELP_STRING([--disable-ssse3],
+ [disable SSSE3 fast paths])],
+ [enable_ssse3=$enableval], [enable_ssse3=auto])
+
+if test $enable_ssse3 = no ; then
+ have_ssse3_intrinsics=disabled
+fi
+
+if test $have_ssse3_intrinsics = yes ; then
+ AC_DEFINE(USE_SSSE3, 1, [use SSSE3 compiler intrinsics])
+fi
+
+AC_MSG_RESULT($have_ssse3_intrinsics)
+if test $enable_ssse3 = yes && test $have_ssse3_intrinsics = no ; then
+ AC_MSG_ERROR([SSSE3 intrinsics not detected])
+fi
+
+AM_CONDITIONAL(USE_SSSE3, test $have_ssse3_intrinsics = yes)
+
+dnl ===========================================================================
dnl Other special flags needed when building code using MMX or SSE instructions
case $host_os in
solaris*)
@@ -471,6 +515,7 @@ AC_SUBST(MMX_CFLAGS)
AC_SUBST(MMX_LDFLAGS)
AC_SUBST(SSE2_CFLAGS)
AC_SUBST(SSE2_LDFLAGS)
+AC_SUBST(SSSE3_CFLAGS)
dnl ===========================================================================
dnl Check for VMX/Altivec
diff --git a/pixman/Makefile.am b/pixman/Makefile.am
index b9ea754..b376d9a 100644
--- a/pixman/Makefile.am
+++ b/pixman/Makefile.am
@@ -52,6 +52,18 @@ libpixman_1_la_LIBADD += libpixman-sse2.la
ASM_CFLAGS_sse2=$(SSE2_CFLAGS)
endif
+# ssse3 code
+if USE_SSSE3
+noinst_LTLIBRARIES += libpixman-ssse3.la
+libpixman_ssse3_la_SOURCES = \
+ pixman-ssse3.c
+libpixman_ssse3_la_CFLAGS = $(SSSE3_CFLAGS)
+libpixman_1_la_LDFLAGS += $(SSSE3_LDFLAGS)
+libpixman_1_la_LIBADD += libpixman-ssse3.la
+
+ASM_CFLAGS_ssse3=$(SSSE3_CFLAGS)
+endif
+
# arm simd code
if USE_ARM_SIMD
noinst_LTLIBRARIES += libpixman-arm-simd.la
diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h
index 535117d..6ca13b2 100644
--- a/pixman/pixman-private.h
+++ b/pixman/pixman-private.h
@@ -593,6 +593,11 @@ pixman_implementation_t *
_pixman_implementation_create_sse2 (pixman_implementation_t *fallback);
#endif
+#ifdef USE_SSSE3
+pixman_implementation_t *
+_pixman_implementation_create_ssse3 (pixman_implementation_t *fallback);
+#endif
+
#ifdef USE_ARM_SIMD
pixman_implementation_t *
_pixman_implementation_create_arm_simd (pixman_implementation_t *fallback);
diff --git a/pixman/pixman-ssse3.c b/pixman/pixman-ssse3.c
new file mode 100644
index 0000000..19d71e7
--- /dev/null
+++ b/pixman/pixman-ssse3.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2013 Soren Sandmann Pedersen
+ * Copyright © 2013 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Soren Sandmann (soren.sandmann at gmail.com)
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <mmintrin.h>
+#include <xmmintrin.h>
+#include <emmintrin.h>
+#include <tmmintrin.h>
+#include "pixman-private.h"
+#include "pixman-inlines.h"
+
+static const pixman_fast_path_t ssse3_fast_paths[] =
+{
+ { PIXMAN_OP_NONE },
+};
+
+pixman_implementation_t *
+_pixman_implementation_create_ssse3 (pixman_implementation_t *fallback)
+{
+ pixman_implementation_t *imp =
+ _pixman_implementation_create (fallback, ssse3_fast_paths);
+
+ return imp;
+}
diff --git a/pixman/pixman-x86.c b/pixman/pixman-x86.c
index 57e4d1f..6527760 100644
--- a/pixman/pixman-x86.c
+++ b/pixman/pixman-x86.c
@@ -25,7 +25,7 @@
#include "pixman-private.h"
-#if defined(USE_X86_MMX) || defined (USE_SSE2)
+#if defined(USE_X86_MMX) || defined (USE_SSE2) || defined (USE_SSSE3)
/* The CPU detection code needs to be in a file not compiled with
* "-mmmx -msse", as gcc would generate CMOV instructions otherwise
@@ -39,7 +39,8 @@ typedef enum
X86_MMX_EXTENSIONS = (1 << 1),
X86_SSE = (1 << 2) | X86_MMX_EXTENSIONS,
X86_SSE2 = (1 << 3),
- X86_CMOV = (1 << 4)
+ X86_CMOV = (1 << 4),
+ X86_SSSE3 = (1 << 5)
} cpu_features_t;
#ifdef HAVE_GETISAX
@@ -64,6 +65,8 @@ detect_cpu_features (void)
features |= X86_SSE;
if (result & AV_386_SSE2)
features |= X86_SSE2;
+ if (result & AV_386_SSSE3)
+ features |= X86_SSSE3;
}
return features;
@@ -167,6 +170,8 @@ detect_cpu_features (void)
features |= X86_SSE;
if (d & (1 << 26))
features |= X86_SSE2;
+ if (d & (1 << 9))
+ features |= X86_SSSE3;
/* Check for AMD specific features */
if ((features & X86_MMX) && !(features & X86_SSE))
@@ -222,6 +227,7 @@ _pixman_x86_get_implementations (pixman_implementation_t *imp)
{
#define MMX_BITS (X86_MMX | X86_MMX_EXTENSIONS)
#define SSE2_BITS (X86_MMX | X86_MMX_EXTENSIONS | X86_SSE | X86_SSE2)
+#define SSSE3_BITS (X86_SSE | X86_SSE2 | X86_SSSE3)
#ifdef USE_X86_MMX
if (!_pixman_disabled ("mmx") && have_feature (MMX_BITS))
@@ -233,5 +239,10 @@ _pixman_x86_get_implementations (pixman_implementation_t *imp)
imp = _pixman_implementation_create_sse2 (imp);
#endif
+#ifdef USE_SSSE3
+ if (!_pixman_disabled ("ssse3") && have_feature (SSSE3_BITS))
+ imp = _pixman_implementation_create_ssse3 (imp);
+#endif
+
return imp;
}
--
1.7.11.7
More information about the Pixman
mailing list