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synced 2025-08-05 22:19:14 +08:00
core: several improves and fixes on ppc64le infrastructure
- add infrastructure support for Power9/VSX3 - fix missing VSX flags on GCC4.9 and CLANG4(#13210, #13222) - fix disable VSX optimzation on GCC by using flag ENABLE_VSX - flag ENABLE_VSX is deprecated now, use CPU_BASELINE, CPU_DISPATCH instead - add VSX3 to arithmetic dispatchable flags
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Sayed Adel
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183bc5c281
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@ -327,7 +327,6 @@ OCV_OPTION(ENABLE_PROFILING "Enable profiling in the GCC compiler (Add
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OCV_OPTION(ENABLE_COVERAGE "Enable coverage collection with GCov" OFF IF CV_GCC )
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OCV_OPTION(ENABLE_OMIT_FRAME_POINTER "Enable -fomit-frame-pointer for GCC" ON IF CV_GCC )
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OCV_OPTION(ENABLE_POWERPC "Enable PowerPC for GCC" ON IF (CV_GCC AND CMAKE_SYSTEM_PROCESSOR MATCHES powerpc.*) )
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OCV_OPTION(ENABLE_VSX "Enable POWER8 and above VSX (64-bit little-endian)" ON IF ((CV_GCC OR CV_CLANG) AND PPC64LE) )
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OCV_OPTION(ENABLE_FAST_MATH "Enable -ffast-math (not recommended for GCC 4.6.x)" OFF IF (CV_GCC AND (X86 OR X86_64)) )
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if(NOT IOS) # Use CPU_BASELINE instead
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OCV_OPTION(ENABLE_NEON "Enable NEON instructions" (NEON OR ANDROID_ARM_NEON OR AARCH64) IF (CV_GCC OR CV_CLANG) AND (ARM OR AARCH64 OR IOS) )
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@ -5,6 +5,10 @@
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# AVX / AVX2 / AVX_512F
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# FMA3
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# ppc64le arch:
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# VSX (always available on Power8)
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# VSX3 (always available on Power9)
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# CPU_{opt}_SUPPORTED=ON/OFF - compiler support (possibly with additional flag)
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# CPU_{opt}_IMPLIES=<list>
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# CPU_{opt}_FORCE=<list> - subset of "implies" list
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@ -29,7 +33,7 @@
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set(CPU_ALL_OPTIMIZATIONS "SSE;SSE2;SSE3;SSSE3;SSE4_1;SSE4_2;POPCNT;AVX;FP16;AVX2;FMA3;AVX_512F;AVX512_SKX")
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list(APPEND CPU_ALL_OPTIMIZATIONS NEON VFPV3 FP16)
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list(APPEND CPU_ALL_OPTIMIZATIONS VSX)
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list(APPEND CPU_ALL_OPTIMIZATIONS VSX VSX3)
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list(REMOVE_DUPLICATES CPU_ALL_OPTIMIZATIONS)
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ocv_update(CPU_VFPV3_FEATURE_ALIAS "")
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@ -81,7 +85,7 @@ ocv_optimization_process_obsolete_option(ENABLE_FMA3 FMA3 ON)
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ocv_optimization_process_obsolete_option(ENABLE_VFPV3 VFPV3 OFF)
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ocv_optimization_process_obsolete_option(ENABLE_NEON NEON OFF)
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ocv_optimization_process_obsolete_option(ENABLE_VSX VSX OFF)
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ocv_optimization_process_obsolete_option(ENABLE_VSX VSX ON)
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macro(ocv_is_optimization_in_list resultvar check_opt)
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set(__checked "")
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@ -289,14 +293,24 @@ elseif(ARM OR AARCH64)
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set(CPU_BASELINE "NEON;FP16" CACHE STRING "${HELP_CPU_BASELINE}")
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endif()
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elseif(PPC64LE)
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ocv_update(CPU_KNOWN_OPTIMIZATIONS "VSX")
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ocv_update(CPU_KNOWN_OPTIMIZATIONS "VSX;VSX3")
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ocv_update(CPU_VSX_TEST_FILE "${OpenCV_SOURCE_DIR}/cmake/checks/cpu_vsx.cpp")
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ocv_update(CPU_VSX3_TEST_FILE "${OpenCV_SOURCE_DIR}/cmake/checks/cpu_vsx3.cpp")
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if(NOT OPENCV_CPU_OPT_IMPLIES_IGNORE)
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ocv_update(CPU_VSX3_IMPLIES "VSX")
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endif()
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if(CV_CLANG AND (NOT ${CMAKE_CXX_COMPILER} MATCHES "xlc"))
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ocv_update(CPU_VSX_FLAGS_ON "-mvsx -maltivec")
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ocv_update(CPU_VSX3_FLAGS_ON "-mpower9-vector")
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else()
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ocv_update(CPU_VSX_FLAGS_ON "-mcpu=power8")
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ocv_update(CPU_VSX3_FLAGS_ON "-mcpu=power9 -mtune=power9")
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endif()
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set(CPU_DISPATCH "VSX3" CACHE STRING "${HELP_CPU_DISPATCH}")
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set(CPU_BASELINE "VSX" CACHE STRING "${HELP_CPU_BASELINE}")
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endif()
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# Helper values for cmake-gui
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@ -1,8 +1,12 @@
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# if defined(__VSX__)
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# include <altivec.h>
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# else
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# error "VSX is not supported"
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# endif
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#if defined(__VSX__)
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#if defined(__PPC64__) && defined(__LITTLE_ENDIAN__)
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#include <altivec.h>
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#else
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#error "OpenCV only supports little-endian mode"
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#endif
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#else
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#error "VSX is not supported"
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#endif
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int main()
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{
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17
cmake/checks/cpu_vsx3.cpp
Normal file
17
cmake/checks/cpu_vsx3.cpp
Normal file
@ -0,0 +1,17 @@
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#if defined(__VSX__)
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#if defined(__PPC64__) && defined(__LITTLE_ENDIAN__)
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#include <altivec.h>
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#else
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#error "OpenCV only supports little-endian mode"
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#endif
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#else
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#error "VSX3 is not supported"
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#endif
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int main()
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{
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__vector unsigned char a = vec_splats((unsigned char)1);
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__vector unsigned char b = vec_splats((unsigned char)2);
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__vector unsigned char r = vec_absd(a, b);
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return 0;
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}
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@ -2,7 +2,7 @@ set(the_description "The Core Functionality")
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ocv_add_dispatched_file(mathfuncs_core SSE2 AVX AVX2)
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ocv_add_dispatched_file(stat SSE4_2 AVX2)
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ocv_add_dispatched_file(arithm SSE2 SSE4_1 AVX2)
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ocv_add_dispatched_file(arithm SSE2 SSE4_1 AVX2 VSX3)
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# dispatching for accuracy tests
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ocv_add_dispatched_file_force_all(test_intrin128 TEST SSE2 SSE3 SSSE3 SSE4_1 SSE4_2 AVX FP16 AVX2)
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@ -107,7 +107,7 @@
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# include <arm_neon.h>
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#endif
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#if defined(__VSX__) && defined(__PPC64__) && defined(__LITTLE_ENDIAN__)
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#ifdef CV_CPU_COMPILE_VSX
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# include <altivec.h>
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# undef vector
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# undef pixel
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@ -115,6 +115,10 @@
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# define CV_VSX 1
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#endif
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#ifdef CV_CPU_COMPILE_VSX3
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# define CV_VSX3 1
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#endif
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#endif // CV_ENABLE_INTRINSICS && !CV_DISABLE_OPTIMIZATION && !__CUDACC__
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#if defined CV_CPU_COMPILE_AVX && !defined CV_CPU_BASELINE_COMPILE_AVX
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@ -237,3 +241,7 @@ struct VZeroUpperGuard {
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#ifndef CV_VSX
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# define CV_VSX 0
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#endif
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#ifndef CV_VSX3
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# define CV_VSX3 0
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#endif
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@ -315,5 +315,26 @@
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#endif
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#define __CV_CPU_DISPATCH_CHAIN_VSX(fn, args, mode, ...) CV_CPU_CALL_VSX(fn, args); __CV_EXPAND(__CV_CPU_DISPATCH_CHAIN_ ## mode(fn, args, __VA_ARGS__))
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#if !defined CV_DISABLE_OPTIMIZATION && defined CV_ENABLE_INTRINSICS && defined CV_CPU_COMPILE_VSX3
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# define CV_TRY_VSX3 1
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# define CV_CPU_FORCE_VSX3 1
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# define CV_CPU_HAS_SUPPORT_VSX3 1
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# define CV_CPU_CALL_VSX3(fn, args) return (cpu_baseline::fn args)
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# define CV_CPU_CALL_VSX3_(fn, args) return (opt_VSX3::fn args)
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#elif !defined CV_DISABLE_OPTIMIZATION && defined CV_ENABLE_INTRINSICS && defined CV_CPU_DISPATCH_COMPILE_VSX3
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# define CV_TRY_VSX3 1
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# define CV_CPU_FORCE_VSX3 0
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# define CV_CPU_HAS_SUPPORT_VSX3 (cv::checkHardwareSupport(CV_CPU_VSX3))
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# define CV_CPU_CALL_VSX3(fn, args) if (CV_CPU_HAS_SUPPORT_VSX3) return (opt_VSX3::fn args)
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# define CV_CPU_CALL_VSX3_(fn, args) if (CV_CPU_HAS_SUPPORT_VSX3) return (opt_VSX3::fn args)
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#else
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# define CV_TRY_VSX3 0
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# define CV_CPU_FORCE_VSX3 0
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# define CV_CPU_HAS_SUPPORT_VSX3 0
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# define CV_CPU_CALL_VSX3(fn, args)
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# define CV_CPU_CALL_VSX3_(fn, args)
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#endif
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#define __CV_CPU_DISPATCH_CHAIN_VSX3(fn, args, mode, ...) CV_CPU_CALL_VSX3(fn, args); __CV_EXPAND(__CV_CPU_DISPATCH_CHAIN_ ## mode(fn, args, __VA_ARGS__))
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#define CV_CPU_CALL_BASELINE(fn, args) return (cpu_baseline::fn args)
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#define __CV_CPU_DISPATCH_CHAIN_BASELINE(fn, args, mode, ...) CV_CPU_CALL_BASELINE(fn, args) /* last in sequence */
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@ -240,9 +240,10 @@ namespace cv { namespace debug_build_guard { } using namespace debug_build_guard
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#define CV_CPU_AVX_512VBMI 20
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#define CV_CPU_AVX_512VL 21
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#define CV_CPU_NEON 100
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#define CV_CPU_NEON 100
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#define CV_CPU_VSX 200
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#define CV_CPU_VSX 200
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#define CV_CPU_VSX3 201
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// CPU features groups
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#define CV_CPU_AVX512_SKX 256
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@ -280,6 +281,7 @@ enum CpuFeatures {
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CPU_NEON = 100,
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CPU_VSX = 200,
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CPU_VSX3 = 201,
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CPU_AVX512_SKX = 256, //!< Skylake-X with AVX-512F/CD/BW/DQ/VL
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@ -107,15 +107,14 @@ void* allocSingletonBuffer(size_t size) { return fastMalloc(size); }
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# include <cpu-features.h>
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#endif
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#ifndef __VSX__
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# if defined __PPC64__ && defined __linux__
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# include "sys/auxv.h"
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# ifndef AT_HWCAP2
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# define AT_HWCAP2 26
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# endif
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# ifndef PPC_FEATURE2_ARCH_2_07
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# define PPC_FEATURE2_ARCH_2_07 0x80000000
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# endif
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#if CV_VSX && defined __linux__
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# include "sys/auxv.h"
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# ifndef AT_HWCAP2
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# define AT_HWCAP2 26
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# endif
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# ifndef PPC_FEATURE2_ARCH_3_00
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# define PPC_FEATURE2_ARCH_3_00 0x00800000
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# endif
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#endif
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@ -359,6 +358,7 @@ struct HWFeatures
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g_hwFeatureNames[CPU_NEON] = "NEON";
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g_hwFeatureNames[CPU_VSX] = "VSX";
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g_hwFeatureNames[CPU_VSX3] = "VSX3";
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g_hwFeatureNames[CPU_AVX512_SKX] = "AVX512-SKX";
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}
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@ -513,14 +513,14 @@ struct HWFeatures
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#endif
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#endif
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#ifdef __VSX__
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have[CV_CPU_VSX] = true;
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#elif (defined __PPC64__ && defined __linux__)
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uint64 hwcaps = getauxval(AT_HWCAP);
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// there's no need to check VSX availability in runtime since it's always available on ppc64le CPUs
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have[CV_CPU_VSX] = (CV_VSX);
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// TODO: Check VSX3 availability in runtime for other platforms
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#if CV_VSX && defined __linux__
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uint64 hwcap2 = getauxval(AT_HWCAP2);
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have[CV_CPU_VSX] = (hwcaps & PPC_FEATURE_PPC_LE && hwcaps & PPC_FEATURE_HAS_VSX && hwcap2 & PPC_FEATURE2_ARCH_2_07);
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have[CV_CPU_VSX3] = (hwcap2 & PPC_FEATURE2_ARCH_3_00);
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#else
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have[CV_CPU_VSX] = false;
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have[CV_CPU_VSX3] = (CV_VSX3);
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#endif
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int baseline_features[] = { CV_CPU_BASELINE_FEATURES };
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