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Merge pull request #19715 from seiko2plus:issue_19698

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This commit is contained in:
Alexander Alekhin 2021-03-12 09:45:19 +00:00
commit f136adcad5
1 changed files with 22 additions and 8 deletions
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30
modules/core/src/system.cpp
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@ -128,11 +128,14 @@ void* allocSingletonNewBuffer(size_t size) { return malloc(size); }
#endif
#if CV_VSX && defined __linux__
#if (defined __ppc64__ || defined __PPC64__) && defined __linux__
# include "sys/auxv.h"
# ifndef AT_HWCAP2
# define AT_HWCAP2 26
# endif
# ifndef PPC_FEATURE2_ARCH_2_07
# define PPC_FEATURE2_ARCH_2_07 0x80000000
# endif
# ifndef PPC_FEATURE2_ARCH_3_00
# define PPC_FEATURE2_ARCH_3_00 0x00800000
# endif
@ -587,14 +590,25 @@ struct HWFeatures
#ifdef __mips_msa
have[CV_CPU_MSA] = true;
#endif
// there's no need to check VSX availability in runtime since it's always available on ppc64le CPUs
have[CV_CPU_VSX] = (CV_VSX);
// TODO: Check VSX3 availability in runtime for other platforms
#if CV_VSX && defined __linux__
uint64 hwcap2 = getauxval(AT_HWCAP2);
have[CV_CPU_VSX3] = (hwcap2 & PPC_FEATURE2_ARCH_3_00);
#if (defined __ppc64__ || defined __PPC64__) && defined __linux__
unsigned int hwcap = getauxval(AT_HWCAP);
if (hwcap & PPC_FEATURE_HAS_VSX) {
hwcap = getauxval(AT_HWCAP2);
if (hwcap & PPC_FEATURE2_ARCH_3_00) {
have[CV_CPU_VSX] = have[CV_CPU_VSX3] = true;
} else {
have[CV_CPU_VSX] = (hwcap & PPC_FEATURE2_ARCH_2_07) != 0;
}
}
#else
have[CV_CPU_VSX3] = (CV_VSX3);
// TODO: AIX, FreeBSD
#if CV_VSX || defined _ARCH_PWR8 || defined __POWER9_VECTOR__
have[CV_CPU_VSX] = true;
#endif
#if CV_VSX3 || defined __POWER9_VECTOR__
have[CV_CPU_VSX3] = true;
#endif
#endif
bool skip_baseline_check = false;