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-rw-r--r--third_party/libpng16/contrib/intel/intel_sse.patch164
1 files changed, 164 insertions, 0 deletions
diff --git a/third_party/libpng16/contrib/intel/intel_sse.patch b/third_party/libpng16/contrib/intel/intel_sse.patch
new file mode 100644
index 0000000000..d9d02bb8fc
--- /dev/null
+++ b/third_party/libpng16/contrib/intel/intel_sse.patch
@@ -0,0 +1,164 @@
+diff --git libpng-1.6.22-orig/configure.ac libpng-1.6.22/configure.ac
+--- libpng-1.6.22-orig/configure.ac 2016-05-25 18:59:10.000000000 -0400
++++ libpng-1.6.22/configure.ac 2016-05-25 19:48:10.631751170 -0400
+@@ -341,16 +341,50 @@ AC_ARG_ENABLE([arm-neon],
+
+ AM_CONDITIONAL([PNG_ARM_NEON],
+ [test "$enable_arm_neon" != 'no' &&
+ case "$host_cpu" in
+ arm*|aarch64*) :;;
+ *) test "$enable_arm_neon" != '';;
+ esac])
+
++# INTEL
++# =====
++#
++# INTEL SSE (SIMD) support.
++
++AC_ARG_ENABLE([intel-sse],
++ AS_HELP_STRING([[[--enable-intel-sse]]],
++ [Enable Intel SSE optimizations: =no/off, yes/on:]
++ [no/off: disable the optimizations;]
++ [yes/on: enable the optimizations.]
++ [If not specified: determined by the compiler.]),
++ [case "$enableval" in
++ no|off)
++ # disable the default enabling:
++ AC_DEFINE([PNG_INTEL_SSE_OPT], [0],
++ [Disable Intel SSE optimizations])
++ # Prevent inclusion of the assembler files below:
++ enable_intel_sse=no;;
++ yes|on)
++ AC_DEFINE([PNG_INTEL_SSE_OPT], [1],
++ [Enable Intel SSE optimizations]);;
++ *)
++ AC_MSG_ERROR([--enable-intel-sse=${enable_intel_sse}: invalid value])
++ esac])
++
++# Add Intel specific files to all builds where the host_cpu is Intel ('x86*')
++# or where Intel optimizations were explicitly requested (this allows a
++# fallback if a future host CPU does not match 'x86*')
++AM_CONDITIONAL([PNG_INTEL_SSE],
++ [test "$enable_intel_sse" != 'no' &&
++ case "$host_cpu" in
++ i?86|x86_64) :;;
++ *) test "$enable_intel_sse" != '';;
++ esac])
+ AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
+
+ # Config files, substituting as above
+ AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
+ AC_CONFIG_FILES([libpng-config:libpng-config.in],
+ [chmod +x libpng-config])
+
+ AC_OUTPUT
+diff --git libpng-1.6.22-orig/Makefile.am libpng-1.6.22/Makefile.am
+--- libpng-1.6.22-orig/Makefile.am 2016-05-17 18:15:12.000000000 -0400
++++ libpng-1.6.22/Makefile.am 2016-05-25 19:48:10.631751170 -0400
+@@ -89,16 +89,20 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SO
+ pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
+ png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa
+
+ if PNG_ARM_NEON
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
+ arm/filter_neon.S arm/filter_neon_intrinsics.c
+ endif
+
++if PNG_INTEL_SSE
++libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += contrib/intel/intel_init.c\
++ contrib/intel/filter_sse2_intrinsics.c
++endif
+ nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
+
+ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined -export-dynamic \
+ -version-number @PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0
+
+ if HAVE_LD_VERSION_SCRIPT
+ # Versioned symbols and restricted exports
+ if HAVE_SOLARIS_LD
+diff --git libpng-1.6.22-orig/pngpriv.h libpng-1.6.22/pngpriv.h
+--- libpng-1.6.22-orig/pngpriv.h 2016-05-25 18:59:10.000000000 -0400
++++ libpng-1.6.22/pngpriv.h 2016-05-25 19:48:10.635751171 -0400
+@@ -177,16 +177,52 @@
+ # endif /* !PNG_ARM_NEON_IMPLEMENTATION */
+
+ # ifndef PNG_ARM_NEON_IMPLEMENTATION
+ /* Use the intrinsics code by default. */
+ # define PNG_ARM_NEON_IMPLEMENTATION 1
+ # endif
+ #endif /* PNG_ARM_NEON_OPT > 0 */
+
++#ifndef PNG_INTEL_SSE_OPT
++# ifdef PNG_INTEL_SSE
++ /* Only check for SSE if the build configuration has been modified to
++ * enable SSE optimizations. This means that these optimizations will
++ * be off by default. See contrib/intel for more details.
++ */
++# if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
++ defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
++ (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
++# define PNG_INTEL_SSE_OPT 1
++# endif
++# endif
++#endif
++
++#if PNG_INTEL_SSE_OPT > 0
++# ifndef PNG_INTEL_SSE_IMPLEMENTATION
++# if defined(__SSE4_1__) || defined(__AVX__)
++ /* We are not actually using AVX, but checking for AVX is the best
++ way we can detect SSE4.1 and SSSE3 on MSVC.
++ */
++# define PNG_INTEL_SSE_IMPLEMENTATION 3
++# elif defined(__SSSE3__)
++# define PNG_INTEL_SSE_IMPLEMENTATION 2
++# elif defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
++ (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
++# define PNG_INTEL_SSE_IMPLEMENTATION 1
++# else
++# define PNG_INTEL_SSE_IMPLEMENTATION 0
++# endif
++# endif
++
++# if PNG_INTEL_SSE_IMPLEMENTATION > 0
++# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_sse2
++# endif
++#endif
++
+ /* Is this a build of a DLL where compilation of the object modules requires
+ * different preprocessor settings to those required for a simple library? If
+ * so PNG_BUILD_DLL must be set.
+ *
+ * If libpng is used inside a DLL but that DLL does not export the libpng APIs
+ * PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a
+ * static library of libpng then link the DLL against that.
+ */
+@@ -1184,16 +1220,29 @@ PNG_INTERNAL_FUNCTION(void,png_read_filt
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+
++PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_sse2,(png_row_infop
++ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_sse2,(png_row_infop
++ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_sse2,(png_row_infop
++ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_sse2,(png_row_infop
++ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_sse2,(png_row_infop
++ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
++PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_sse2,(png_row_infop
++ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
++
+ /* Choose the best filter to use and filter the row data */
+ PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
+ png_row_infop row_info),PNG_EMPTY);
+
+ #ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+ PNG_INTERNAL_FUNCTION(void,png_read_IDAT_data,(png_structrp png_ptr,
+ png_bytep output, png_alloc_size_t avail_out),PNG_EMPTY);
+ /* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer