Add intel opts to Makefile and configure.ac
This commit is contained in:
Matt Sarett
parent
5bc58a0ebc
commit
9a308a3344
@ -83,6 +83,11 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
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arm/filter_neon.S arm/filter_neon_intrinsics.c
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endif
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if PNG_INTEL_SSE
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libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += intel/intel_init.c\
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intel/filter_sse2_intrinsics.c
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endif
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nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
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libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined -export-dynamic \
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35
configure.ac
35
configure.ac
@ -314,6 +314,41 @@ AM_CONDITIONAL([PNG_ARM_NEON],
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*) test "$enable_arm_neon" != '';;
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esac])
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# INTEL
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# ===
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#
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# INTEL SSE (SIMD) support.
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AC_ARG_ENABLE([intel-sse],
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AS_HELP_STRING([[[--enable-intel-sse]]],
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[Enable Intel SSE optimizations: =no/off, yes/on:]
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[no/off: disable the optimizations;]
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[yes/on: enable the optimizations.]
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[If not specified: determined by the compiler.]),
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[case "$enableval" in
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no|off)
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# disable the default enabling:
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AC_DEFINE([PNG_INTEL_SSE_OPT], [0],
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[Disable Intel SSE optimizations])
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# Prevent inclusion of the assembler files below:
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enable_intel_sse=no;;
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yes|on)
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AC_DEFINE([PNG_INTEL_SSE_OPT], [1],
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[Enable Intel SSE optimizations]);;
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*)
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AC_MSG_ERROR([--enable-intel-sse=${enable_intel_sse}: invalid value])
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esac])
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# Add Intel specific files to all builds where the host_cpu is Intel ('x86*')
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# or where Intel optimizations were explicitly requested (this allows a
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# fallback if a future host CPU does not match 'x86*')
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AM_CONDITIONAL([PNG_INTEL_SSE],
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[test "$enable_intel_sse" != 'no' &&
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case "$host_cpu" in
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x86*) :;;
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*) test "$enable_intel_sse" != '';;
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esac])
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AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
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# Config files, substituting as above
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@ -12,7 +12,7 @@
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#ifdef PNG_READ_SUPPORTED
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#if PNG_INTEL_SSE_OPT > 0
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#if PNG_INTEL_SSE_IMPLEMENTATION > 0
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#include <immintrin.h>
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@ -144,7 +144,7 @@ void png_read_filter_row_avg4_sse2(png_row_infop row_info, png_bytep row,
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// Returns |x| for 16-bit lanes.
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static __m128i abs_i16(__m128i x) {
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#if PNG_INTEL_SSE_OPT >= 2
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#if PNG_INTEL_SSE_IMPLEMENTATION >= 2
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return _mm_abs_epi16(x);
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#else
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// Read this all as, return x<0 ? -x : x.
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@ -162,7 +162,7 @@ static __m128i abs_i16(__m128i x) {
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// Bytewise c ? t : e.
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static __m128i if_then_else(__m128i c, __m128i t, __m128i e) {
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#if PNG_INTEL_SSE_OPT >= 3
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#if PNG_INTEL_SSE_IMPLEMENTATION >= 3
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return _mm_blendv_epi8(e,t,c);
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#else
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return _mm_or_si128(_mm_and_si128(c, t), _mm_andnot_si128(c, e));
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@ -281,5 +281,5 @@ void png_read_filter_row_paeth4_sse2(png_row_infop row_info, png_bytep row,
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}
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}
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#endif /* PNG_INTEL_SSE_OPT > 0 */
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#endif /* PNG_INTEL_SSE_IMPLEMENTATION > 0 */
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#endif /* READ */
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@ -11,7 +11,7 @@
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#include "../pngpriv.h"
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#ifdef PNG_READ_SUPPORTED
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#if PNG_INTEL_SSE_OPT > 0
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#if PNG_INTEL_SSE_IMPLEMENTATION > 0
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void
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png_init_filter_functions_sse2(png_structp pp, unsigned int bpp)
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@ -41,5 +41,5 @@ png_init_filter_functions_sse2(png_structp pp, unsigned int bpp)
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// No need optimize PNG_FILTER_VALUE_UP. The compiler should autovectorize.
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}
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#endif /* PNG_INTEL_SSE_OPT > 0 */
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#endif /* PNG_INTEL_SSE_IMPLEMENTATION > 0 */
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#endif /* PNG_READ_SUPPORTED */
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28
pngpriv.h
28
pngpriv.h
@ -183,21 +183,33 @@
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#endif /* PNG_ARM_NEON_OPT > 0 */
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#ifndef PNG_INTEL_SSE_OPT
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# if defined(__SSE4_1__) || defined(__AVX__)
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/* We are not actually using AVX, but checking for AVX is the best
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way we can detect SSE4.1 and SSSE3 on MSVC.
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*/
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# define PNG_INTEL_SSE_OPT 3
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# elif defined(__SSSE3__)
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# define PNG_INTEL_SSE_OPT 2
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# elif defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
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# if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
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defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
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(defined(_M_IX86_FP) && _M_IX86_FP >= 2)
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# define PNG_INTEL_SSE_OPT 1
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# endif
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#endif
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#if PNG_INTEL_SSE_OPT > 0
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# ifndef PNG_INTEL_SSE_IMPLEMENTATION
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# if defined(__SSE4_1__) || defined(__AVX__)
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/* We are not actually using AVX, but checking for AVX is the best
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way we can detect SSE4.1 and SSSE3 on MSVC.
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*/
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# define PNG_INTEL_SSE_IMPLEMENTATION 3
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# elif defined(__SSSE3__)
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# define PNG_INTEL_SSE_IMPLEMENTATION 2
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# elif defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
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(defined(_M_IX86_FP) && _M_IX86_FP >= 2)
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# define PNG_INTEL_SSE_IMPLEMENTATION 1
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# else
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# define PNG_INTEL_SSE_IMPLEMENTATION 0
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# endif
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# endif
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# if PNG_INTEL_SSE_IMPLEMENTATION > 0
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# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_sse2
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# endif
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#endif
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/* Is this a build of a DLL where compilation of the object modules requires
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