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turbob64.c
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turbob64.c
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#include <stddef.h>
#include <stdint.h>
#include "turbob64.h"
static unsigned _cpuisa;
//--------------------- CPU detection -------------------------------------------
#if defined(__i386__) || defined(__x86_64__)
#if _MSC_VER >=1300
#include <intrin.h>
#elif defined (__INTEL_COMPILER)
#include <x86intrin.h>
#endif
static inline void cpuid(int reg[4], int id) {
#if defined (_MSC_VER) //|| defined (__INTEL_COMPILER)
__cpuidex(reg, id, 0);
#elif defined(__i386__) || defined(__x86_64__)
__asm("cpuid" : "=a"(reg[0]),"=b"(reg[1]),"=c"(reg[2]),"=d"(reg[3]) : "a"(id),"c"(0) : );
#endif
}
static inline uint64_t xgetbv (int ctr) {
#if(defined _MSC_VER && (_MSC_FULL_VER >= 160040219) || defined __INTEL_COMPILER)
return _xgetbv(ctr);
#elif defined(__i386__) || defined(__x86_64__)
unsigned a, d;
__asm("xgetbv" : "=a"(a),"=d"(d) : "c"(ctr) : );
return (uint64_t)d << 32 | a;
#else
unsigned a=0, d=0;
return (uint64_t)d << 32 | a;
#endif
}
#endif
#define AVX512F 0x001
#define AVX512DQ 0x002
#define AVX512IFMA 0x004
#define AVX512PF 0x008
#define AVX512ER 0x010
#define AVX512CD 0x020
#define AVX512BW 0x040
#define AVX512VL 0x080
#define AVX512VNNI 0x100
#define AVX512VBMI 0x200
#define AVX512VBMI2 0x400
#define IS_SSE 0x10
#define IS_SSE2 0x20
#define IS_SSE3 0x30
#define IS_SSSE3 0x32
#define IS_POWER9 0x34 // powerpc
#define IS_NEON 0x38 // arm neon
#define IS_SSE41 0x40
#define IS_SSE41x 0x41 //+popcount
#define IS_SSE42 0x42
#define IS_AVX 0x50
#define IS_AVX2 0x60
#define IS_AVX512 0x800
unsigned cpuisa(void) {
int c[4] = {0};
if(_cpuisa) return _cpuisa;
_cpuisa++;
#if defined(__i386__) || defined(__x86_64__)
cpuid(c, 0);
if(c[0]) {
cpuid(c, 1);
//family = ((c >> 8) & 0xf) + ((c >> 20) & 0xff)
//model = ((c >> 4) & 0xf) + ((c >> 12) & 0xf0)
if( c[3] & (1 << 25)) { _cpuisa = IS_SSE;
if( c[3] & (1 << 26)) { _cpuisa = IS_SSE2;
if( c[2] & (1 << 0)) { _cpuisa = IS_SSE3;
// _cpuisa = IS_SSE3SLOW; // Atom SSSE3 slow
if( c[2] & (1 << 9)) { _cpuisa = IS_SSSE3;
if( c[2] & (1 << 19)) { _cpuisa = IS_SSE41;
if( c[2] & (1 << 23)) { _cpuisa = IS_SSE41x; // +popcount
if( c[2] & (1 << 20)) { _cpuisa = IS_SSE42; // SSE4.2
if((c[2] & (1 << 28)) &&
(c[2] & (1 << 27)) && // OSXSAVE
(c[2] & (1 << 26)) && // XSAVE
(xgetbv(0) & 6)==6) { _cpuisa = IS_AVX; // AVX
if(c[2]& (1 << 3)) _cpuisa |= 1; // +FMA3
if(c[2]& (1 << 16)) _cpuisa |= 2; // +FMA4
if(c[2]& (1 << 25)) _cpuisa |= 4; // +AES
cpuid(c, 7);
if(c[1] & (1 << 5)) { _cpuisa = IS_AVX2;
if(c[1] & (1 << 16)) {
cpuid(c, 0xd);
if((c[0] & 0x60)==0x60) { _cpuisa = IS_AVX512;
cpuid(c, 7);
if(c[1] & (1<<16)) _cpuisa |= AVX512F;
if(c[1] & (1<<17)) _cpuisa |= AVX512DQ;
if(c[1] & (1<<21)) _cpuisa |= AVX512IFMA;
if(c[1] & (1<<26)) _cpuisa |= AVX512PF;
if(c[1] & (1<<27)) _cpuisa |= AVX512ER;
if(c[1] & (1<<28)) _cpuisa |= AVX512CD;
if(c[1] & (1<<30)) _cpuisa |= AVX512BW;
if(c[1] & (1u<<31)) _cpuisa |= AVX512VL;
if(c[2] & (1<< 1)) _cpuisa |= AVX512VBMI;
if(c[2] & (1<<11)) _cpuisa |= AVX512VNNI;
if(c[2] & (1<< 6)) _cpuisa |= AVX512VBMI2;
}}}
}}}}}}}}}
#elif defined(__powerpc64__)
_cpuisa = IS_POWER9; // power9
#elif defined(__ARM_NEON)
_cpuisa = IS_NEON; // ARM_NEON
#endif
return _cpuisa;
}
unsigned cpuini(unsigned cpuisa) { if(cpuisa) _cpuisa = cpuisa; return _cpuisa; }
char *cpustr(unsigned cpuisa) {
if(!cpuisa) cpuisa = _cpuisa;
#if defined(__i386__) || defined(__x86_64__)
if(cpuisa >= IS_AVX512) {
if(cpuisa & AVX512VBMI2) return "avx512vbmi2";
if(cpuisa & AVX512VBMI) return "avx512vbmi";
if(cpuisa & AVX512VNNI) return "avx512vnni";
if(cpuisa & AVX512VL) return "avx512vl";
if(cpuisa & AVX512BW) return "avx512bw";
if(cpuisa & AVX512CD) return "avx512cd";
if(cpuisa & AVX512ER) return "avx512er";
if(cpuisa & AVX512PF) return "avx512pf";
if(cpuisa & AVX512IFMA) return "avx512ifma";
if(cpuisa & AVX512DQ) return "avx512dq";
if(cpuisa & AVX512F) return "avx512f";
return "avx512";
}
else if(cpuisa >= IS_AVX2) return "avx2";
else if(cpuisa >= IS_AVX)
switch(cpuisa&0xf) {
case 1: return "avx+fma3";
case 2: return "avx+fma4";
case 4: return "avx+aes";
case 5: return "avx+fma3+aes";
default:return "avx";
}
else if(cpuisa >= IS_SSE42) return "sse4.2";
else if(cpuisa >= IS_SSE41x) return "sse4.1+popcnt";
else if(cpuisa >= IS_SSE41) return "sse4.1";
else if(cpuisa >= IS_SSSE3) return "ssse3";
else if(cpuisa >= IS_SSE3) return "sse3";
else if(cpuisa >= IS_SSE2) return "sse2";
else if(cpuisa >= IS_SSE) return "sse";
#elif defined(__powerpc64__)
if(cpuisa >= IS_POWER9) return "power9";
#elif defined(__ARM_NEON)
if(cpuisa >= IS_NEON) return "arm_neon";
#endif
return "none";
}
//---------------------------------------------------------------------------------
TB64FUNC _tb64e = tb64xenc;
TB64FUNC _tb64d = tb64xdec;
static int tb64set;
void tb64ini(unsigned id, unsigned isshort) {
int i;
if(tb64set) return;
tb64set++;
i = id?id:cpuisa();
#if defined(__i386__) || defined(__x86_64__)
#ifdef USE_AVX512
if(i >= IS_AVX512) {
_tb64e = i >= (IS_AVX512|AVX512VL)?tb64avx2enc:tb64avx2enc;
_tb64d = tb64avx512dec;
} else
#endif
#ifndef NO_AVX2
if(i >= IS_AVX2) {
_tb64e = isshort?_tb64avx2enc:tb64avx2enc;
_tb64d = isshort?_tb64avx2dec:tb64avx2dec;
} else
#endif
#endif
#if defined(__i386__) || defined(__x86_64__) || defined(__ARM_NEON) || defined(__powerpc64__)
#ifndef NO_SSE
if(i >= IS_SSSE3) {
_tb64e = tb64sseenc;
_tb64d = tb64ssedec;
}
#endif
#endif
}
size_t tb64enc(const unsigned char *in, size_t inlen, unsigned char *out) {
if(!tb64set) tb64ini(0,0);
return _tb64e(in,inlen,out);
}
size_t tb64dec(const unsigned char *in, size_t inlen, unsigned char *out) {
if(!tb64set) tb64ini(0,0);
return _tb64d(in,inlen,out);
}