diff options
Diffstat (limited to 'thirdparty/embree/common/sys/intrinsics.h')
| -rw-r--r-- | thirdparty/embree/common/sys/intrinsics.h | 525 |
1 files changed, 525 insertions, 0 deletions
diff --git a/thirdparty/embree/common/sys/intrinsics.h b/thirdparty/embree/common/sys/intrinsics.h new file mode 100644 index 0000000000..ed8dd7d40a --- /dev/null +++ b/thirdparty/embree/common/sys/intrinsics.h @@ -0,0 +1,525 @@ +// Copyright 2009-2021 Intel Corporation +// SPDX-License-Identifier: Apache-2.0 + +#pragma once + +#include "platform.h" + +#if defined(__WIN32__) +#include <intrin.h> +#endif + +#if defined(__ARM_NEON) +#include "../simd/arm/emulation.h" +#else +#include <immintrin.h> +#endif + +#if defined(__BMI__) && defined(__GNUC__) && !defined(__INTEL_COMPILER) + #if !defined(_tzcnt_u32) + #define _tzcnt_u32 __tzcnt_u32 + #endif + #if !defined(_tzcnt_u64) + #define _tzcnt_u64 __tzcnt_u64 + #endif +#endif + +#if defined(__LZCNT__) + #if !defined(_lzcnt_u32) + #define _lzcnt_u32 __lzcnt32 + #endif + #if !defined(_lzcnt_u64) + #define _lzcnt_u64 __lzcnt64 + #endif +#endif + +#if defined(__WIN32__) +// -- GODOT start -- +#if !defined(NOMINMAX) +// -- GODOT end -- +#define NOMINMAX +// -- GODOT start -- +#endif +#include "windows.h" +// -- GODOT end -- +#endif + +/* normally defined in pmmintrin.h, but we always need this */ +#if !defined(_MM_SET_DENORMALS_ZERO_MODE) +#define _MM_DENORMALS_ZERO_ON (0x0040) +#define _MM_DENORMALS_ZERO_OFF (0x0000) +#define _MM_DENORMALS_ZERO_MASK (0x0040) +#define _MM_SET_DENORMALS_ZERO_MODE(x) (_mm_setcsr((_mm_getcsr() & ~_MM_DENORMALS_ZERO_MASK) | (x))) +#endif + +namespace embree +{ + +//////////////////////////////////////////////////////////////////////////////// +/// Windows Platform +//////////////////////////////////////////////////////////////////////////////// + +#if defined(__WIN32__) + + __forceinline size_t read_tsc() + { + LARGE_INTEGER li; + QueryPerformanceCounter(&li); + return (size_t)li.QuadPart; + } + + __forceinline int bsf(int v) { +#if defined(__AVX2__) + return _tzcnt_u32(v); +#else + unsigned long r = 0; _BitScanForward(&r,v); return r; +#endif + } + + __forceinline unsigned bsf(unsigned v) { +#if defined(__AVX2__) + return _tzcnt_u32(v); +#else + unsigned long r = 0; _BitScanForward(&r,v); return r; +#endif + } + +#if defined(__X86_64__) + __forceinline size_t bsf(size_t v) { +#if defined(__AVX2__) + return _tzcnt_u64(v); +#else + unsigned long r = 0; _BitScanForward64(&r,v); return r; +#endif + } +#endif + + __forceinline int bscf(int& v) + { + int i = bsf(v); + v &= v-1; + return i; + } + + __forceinline unsigned bscf(unsigned& v) + { + unsigned i = bsf(v); + v &= v-1; + return i; + } + +#if defined(__X86_64__) + __forceinline size_t bscf(size_t& v) + { + size_t i = bsf(v); + v &= v-1; + return i; + } +#endif + + __forceinline int bsr(int v) { +#if defined(__AVX2__) + return 31 - _lzcnt_u32(v); +#else + unsigned long r = 0; _BitScanReverse(&r,v); return r; +#endif + } + + __forceinline unsigned bsr(unsigned v) { +#if defined(__AVX2__) + return 31 - _lzcnt_u32(v); +#else + unsigned long r = 0; _BitScanReverse(&r,v); return r; +#endif + } + +#if defined(__X86_64__) + __forceinline size_t bsr(size_t v) { +#if defined(__AVX2__) + return 63 -_lzcnt_u64(v); +#else + unsigned long r = 0; _BitScanReverse64(&r, v); return r; +#endif + } +#endif + + __forceinline int lzcnt(const int x) + { +#if defined(__AVX2__) + return _lzcnt_u32(x); +#else + if (unlikely(x == 0)) return 32; + return 31 - bsr(x); +#endif + } + + __forceinline int btc(int v, int i) { + long r = v; _bittestandcomplement(&r,i); return r; + } + + __forceinline int bts(int v, int i) { + long r = v; _bittestandset(&r,i); return r; + } + + __forceinline int btr(int v, int i) { + long r = v; _bittestandreset(&r,i); return r; + } + +#if defined(__X86_64__) + + __forceinline size_t btc(size_t v, size_t i) { + size_t r = v; _bittestandcomplement64((__int64*)&r,i); return r; + } + + __forceinline size_t bts(size_t v, size_t i) { + __int64 r = v; _bittestandset64(&r,i); return r; + } + + __forceinline size_t btr(size_t v, size_t i) { + __int64 r = v; _bittestandreset64(&r,i); return r; + } + +#endif + + __forceinline int32_t atomic_cmpxchg(volatile int32_t* p, const int32_t c, const int32_t v) { + return _InterlockedCompareExchange((volatile long*)p,v,c); + } + +//////////////////////////////////////////////////////////////////////////////// +/// Unix Platform +//////////////////////////////////////////////////////////////////////////////// + +#else + +#if defined(__i386__) && defined(__PIC__) + + __forceinline void __cpuid(int out[4], int op) + { + asm volatile ("xchg{l}\t{%%}ebx, %1\n\t" + "cpuid\n\t" + "xchg{l}\t{%%}ebx, %1\n\t" + : "=a"(out[0]), "=r"(out[1]), "=c"(out[2]), "=d"(out[3]) + : "0"(op)); + } + + __forceinline void __cpuid_count(int out[4], int op1, int op2) + { + asm volatile ("xchg{l}\t{%%}ebx, %1\n\t" + "cpuid\n\t" + "xchg{l}\t{%%}ebx, %1\n\t" + : "=a" (out[0]), "=r" (out[1]), "=c" (out[2]), "=d" (out[3]) + : "0" (op1), "2" (op2)); + } + +#elif defined(__X86_ASM__) + + __forceinline void __cpuid(int out[4], int op) { + asm volatile ("cpuid" : "=a"(out[0]), "=b"(out[1]), "=c"(out[2]), "=d"(out[3]) : "a"(op)); + } + + __forceinline void __cpuid_count(int out[4], int op1, int op2) { + asm volatile ("cpuid" : "=a"(out[0]), "=b"(out[1]), "=c"(out[2]), "=d"(out[3]) : "a"(op1), "c"(op2)); + } + +#endif + + __forceinline uint64_t read_tsc() { +#if defined(__X86_ASM__) + uint32_t high,low; + asm volatile ("rdtsc" : "=d"(high), "=a"(low)); + return (((uint64_t)high) << 32) + (uint64_t)low; +#else + /* Not supported yet, meaning measuring traversal cost per pixel does not work. */ + return 0; +#endif + } + + __forceinline int bsf(int v) { +#if defined(__AVX2__) + return _tzcnt_u32(v); +#elif defined(__X86_ASM__) + int r = 0; asm ("bsf %1,%0" : "=r"(r) : "r"(v)); return r; +#else + return __builtin_ctz(v); +#endif + } + +#if defined(__64BIT__) + __forceinline unsigned bsf(unsigned v) + { +#if defined(__AVX2__) + return _tzcnt_u32(v); +#elif defined(__X86_ASM__) + unsigned r = 0; asm ("bsf %1,%0" : "=r"(r) : "r"(v)); return r; +#else + return __builtin_ctz(v); +#endif + } +#endif + + __forceinline size_t bsf(size_t v) { +#if defined(__AVX2__) +#if defined(__X86_64__) + return _tzcnt_u64(v); +#else + return _tzcnt_u32(v); +#endif +#elif defined(__X86_ASM__) + size_t r = 0; asm ("bsf %1,%0" : "=r"(r) : "r"(v)); return r; +#else + return __builtin_ctzl(v); +#endif + } + + __forceinline int bscf(int& v) + { + int i = bsf(v); + v &= v-1; + return i; + } + +#if defined(__64BIT__) + __forceinline unsigned int bscf(unsigned int& v) + { + unsigned int i = bsf(v); + v &= v-1; + return i; + } +#endif + + __forceinline size_t bscf(size_t& v) + { + size_t i = bsf(v); + v &= v-1; + return i; + } + + __forceinline int bsr(int v) { +#if defined(__AVX2__) + return 31 - _lzcnt_u32(v); +#elif defined(__X86_ASM__) + int r = 0; asm ("bsr %1,%0" : "=r"(r) : "r"(v)); return r; +#else + return __builtin_clz(v) ^ 31; +#endif + } + +#if defined(__64BIT__) + __forceinline unsigned bsr(unsigned v) { +#if defined(__AVX2__) + return 31 - _lzcnt_u32(v); +#elif defined(__X86_ASM__) + unsigned r = 0; asm ("bsr %1,%0" : "=r"(r) : "r"(v)); return r; +#else + return __builtin_clz(v) ^ 31; +#endif + } +#endif + + __forceinline size_t bsr(size_t v) { +#if defined(__AVX2__) +#if defined(__X86_64__) + return 63 - _lzcnt_u64(v); +#else + return 31 - _lzcnt_u32(v); +#endif +#elif defined(__X86_ASM__) + size_t r = 0; asm ("bsr %1,%0" : "=r"(r) : "r"(v)); return r; +#else + return (sizeof(v) * 8 - 1) - __builtin_clzl(v); +#endif + } + + __forceinline int lzcnt(const int x) + { +#if defined(__AVX2__) + return _lzcnt_u32(x); +#else + if (unlikely(x == 0)) return 32; + return 31 - bsr(x); +#endif + } + + __forceinline size_t blsr(size_t v) { +#if defined(__AVX2__) +#if defined(__INTEL_COMPILER) + return _blsr_u64(v); +#else +#if defined(__X86_64__) + return __blsr_u64(v); +#else + return __blsr_u32(v); +#endif +#endif +#else + return v & (v-1); +#endif + } + + __forceinline int btc(int v, int i) { +#if defined(__X86_ASM__) + int r = 0; asm ("btc %1,%0" : "=r"(r) : "r"(i), "0"(v) : "flags" ); return r; +#else + return (v ^ (1 << i)); +#endif + } + + __forceinline int bts(int v, int i) { +#if defined(__X86_ASM__) + int r = 0; asm ("bts %1,%0" : "=r"(r) : "r"(i), "0"(v) : "flags"); return r; +#else + return (v | (v << i)); +#endif + } + + __forceinline int btr(int v, int i) { +#if defined(__X86_ASM__) + int r = 0; asm ("btr %1,%0" : "=r"(r) : "r"(i), "0"(v) : "flags"); return r; +#else + return (v & ~(v << i)); +#endif + } + + __forceinline size_t btc(size_t v, size_t i) { +#if defined(__X86_ASM__) + size_t r = 0; asm ("btc %1,%0" : "=r"(r) : "r"(i), "0"(v) : "flags" ); return r; +#else + return (v ^ (1 << i)); +#endif + } + + __forceinline size_t bts(size_t v, size_t i) { +#if defined(__X86_ASM__) + size_t r = 0; asm ("bts %1,%0" : "=r"(r) : "r"(i), "0"(v) : "flags"); return r; +#else + return (v | (v << i)); +#endif + } + + __forceinline size_t btr(size_t v, size_t i) { +#if defined(__X86_ASM__) + size_t r = 0; asm ("btr %1,%0" : "=r"(r) : "r"(i), "0"(v) : "flags"); return r; +#else + return (v & ~(v << i)); +#endif + } + + __forceinline int32_t atomic_cmpxchg(int32_t volatile* value, int32_t comparand, const int32_t input) { + return __sync_val_compare_and_swap(value, comparand, input); + } + +#endif + +//////////////////////////////////////////////////////////////////////////////// +/// All Platforms +//////////////////////////////////////////////////////////////////////////////// + +#if defined(__clang__) || defined(__GNUC__) +#if !defined(_mm_undefined_ps) + __forceinline __m128 _mm_undefined_ps() { return _mm_setzero_ps(); } +#endif +#if !defined(_mm_undefined_si128) + __forceinline __m128i _mm_undefined_si128() { return _mm_setzero_si128(); } +#endif +#if !defined(_mm256_undefined_ps) && defined(__AVX__) + __forceinline __m256 _mm256_undefined_ps() { return _mm256_setzero_ps(); } +#endif +#if !defined(_mm256_undefined_si256) && defined(__AVX__) + __forceinline __m256i _mm256_undefined_si256() { return _mm256_setzero_si256(); } +#endif +#if !defined(_mm512_undefined_ps) && defined(__AVX512F__) + __forceinline __m512 _mm512_undefined_ps() { return _mm512_setzero_ps(); } +#endif +#if !defined(_mm512_undefined_epi32) && defined(__AVX512F__) + __forceinline __m512i _mm512_undefined_epi32() { return _mm512_setzero_si512(); } +#endif +#endif + +#if defined(__SSE4_2__) + + __forceinline int popcnt(int in) { + return _mm_popcnt_u32(in); + } + + __forceinline unsigned popcnt(unsigned in) { + return _mm_popcnt_u32(in); + } + +#if defined(__64BIT__) + __forceinline size_t popcnt(size_t in) { + return _mm_popcnt_u64(in); + } +#endif + +#endif + +#if defined(__X86_ASM__) + __forceinline uint64_t rdtsc() + { + int dummy[4]; + __cpuid(dummy,0); + uint64_t clock = read_tsc(); + __cpuid(dummy,0); + return clock; + } +#endif + + __forceinline void pause_cpu(const size_t N = 8) + { + for (size_t i=0; i<N; i++) + _mm_pause(); + } + + /* prefetches */ + __forceinline void prefetchL1 (const void* ptr) { _mm_prefetch((const char*)ptr,_MM_HINT_T0); } + __forceinline void prefetchL2 (const void* ptr) { _mm_prefetch((const char*)ptr,_MM_HINT_T1); } + __forceinline void prefetchL3 (const void* ptr) { _mm_prefetch((const char*)ptr,_MM_HINT_T2); } + __forceinline void prefetchNTA(const void* ptr) { _mm_prefetch((const char*)ptr,_MM_HINT_NTA); } + __forceinline void prefetchEX (const void* ptr) { +#if defined(__INTEL_COMPILER) + _mm_prefetch((const char*)ptr,_MM_HINT_ET0); +#else + _mm_prefetch((const char*)ptr,_MM_HINT_T0); +#endif + } + + __forceinline void prefetchL1EX(const void* ptr) { + prefetchEX(ptr); + } + + __forceinline void prefetchL2EX(const void* ptr) { + prefetchEX(ptr); + } +#if defined(__AVX2__) + __forceinline unsigned int pext(unsigned int a, unsigned int b) { return _pext_u32(a, b); } + __forceinline unsigned int pdep(unsigned int a, unsigned int b) { return _pdep_u32(a, b); } +#if defined(__X86_64__) + __forceinline size_t pext(size_t a, size_t b) { return _pext_u64(a, b); } + __forceinline size_t pdep(size_t a, size_t b) { return _pdep_u64(a, b); } +#endif +#endif + +#if defined(__AVX512F__) +#if defined(__INTEL_COMPILER) + __forceinline float mm512_cvtss_f32(__m512 v) { + return _mm512_cvtss_f32(v); + } + __forceinline int mm512_mask2int(__mmask16 k1) { + return _mm512_mask2int(k1); + } + __forceinline __mmask16 mm512_int2mask(int mask) { + return _mm512_int2mask(mask); + } +#else + __forceinline float mm512_cvtss_f32(__m512 v) { // FIXME: _mm512_cvtss_f32 neither supported by clang v4.0.0 nor GCC 6.3 + return _mm_cvtss_f32(_mm512_castps512_ps128(v)); + } + __forceinline int mm512_mask2int(__mmask16 k1) { // FIXME: _mm512_mask2int not yet supported by GCC 6.3 + return (int)k1; + } + __forceinline __mmask16 mm512_int2mask(int mask) { // FIXME: _mm512_int2mask not yet supported by GCC 6.3 + return (__mmask16)mask; + } +#endif +#endif +} |