SuperTuxKart 1.5 upstream source (from official release tarball)
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Benjamin
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/* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Copyright:
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* 2020 Evan Nemerson <evan@nemerson.com>
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* 2023 Yi-Yen Chung <eric681@andestech.com> (Copyright owned by Andes Technology)
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*/
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#if !defined(SIMDE_ARM_NEON_CNT_H)
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#define SIMDE_ARM_NEON_CNT_H
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#include "types.h"
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#include "reinterpret.h"
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#include <limits.h>
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HEDLEY_DIAGNOSTIC_PUSH
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SIMDE_DISABLE_UNWANTED_DIAGNOSTICS
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SIMDE_BEGIN_DECLS_
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SIMDE_FUNCTION_ATTRIBUTES
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uint8_t
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simde_x_arm_neon_cntb(uint8_t v) {
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v = v - ((v >> 1) & (85));
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v = (v & (51)) + ((v >> (2)) & (51));
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v = (v + (v >> (4))) & (15);
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return HEDLEY_STATIC_CAST(uint8_t, v) >> (sizeof(uint8_t) - 1) * CHAR_BIT;
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}
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SIMDE_FUNCTION_ATTRIBUTES
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simde_int8x8_t
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simde_vcnt_s8(simde_int8x8_t a) {
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#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
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return vcnt_s8(a);
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#else
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simde_int8x8_private
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r_,
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a_ = simde_int8x8_to_private(a);
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SIMDE_VECTORIZE
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for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
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r_.values[i] = HEDLEY_STATIC_CAST(int8_t, simde_x_arm_neon_cntb(HEDLEY_STATIC_CAST(uint8_t, a_.values[i])));
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}
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return simde_int8x8_from_private(r_);
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#endif
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}
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#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
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#undef vcnt_s8
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#define vcnt_s8(a) simde_vcnt_s8((a))
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#endif
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SIMDE_FUNCTION_ATTRIBUTES
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simde_uint8x8_t
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simde_vcnt_u8(simde_uint8x8_t a) {
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#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
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return vcnt_u8(a);
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#else
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simde_uint8x8_private
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r_,
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a_ = simde_uint8x8_to_private(a);
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SIMDE_VECTORIZE
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for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
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r_.values[i] = simde_x_arm_neon_cntb(a_.values[i]);
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}
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return simde_uint8x8_from_private(r_);
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#endif
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}
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#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
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#undef vcnt_u8
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#define vcnt_u8(a) simde_vcnt_u8((a))
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#endif
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/* The x86 implementations are stolen from
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* https://github.com/WebAssembly/simd/pull/379. They could be cleaned
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* up a bit if someone is bored; they're mostly just direct
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* translations from the assembly. */
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SIMDE_FUNCTION_ATTRIBUTES
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simde_int8x16_t
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simde_vcntq_s8(simde_int8x16_t a) {
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#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
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return vcntq_s8(a);
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#elif defined(SIMDE_POWER_ALTIVEC_P8_NATIVE)
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return HEDLEY_REINTERPRET_CAST(SIMDE_POWER_ALTIVEC_VECTOR(signed char), vec_popcnt(HEDLEY_REINTERPRET_CAST(SIMDE_POWER_ALTIVEC_VECTOR(unsigned char), a)));
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#else
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simde_int8x16_private
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r_,
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a_ = simde_int8x16_to_private(a);
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#if defined(SIMDE_X86_AVX512VL_NATIVE) && defined(SIMDE_X86_AVX512BITALG_NATIVE)
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r_.m128i = _mm_popcnt_epi8(a_.m128i);
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#elif defined(SIMDE_X86_AVX2_NATIVE)
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__m128i tmp0 = _mm_set1_epi8(0x0f);
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__m128i tmp1 = _mm_andnot_si128(tmp0, a_.m128i);
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__m128i y = _mm_and_si128(tmp0, a_.m128i);
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tmp0 = _mm_set_epi8(4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0);
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tmp1 = _mm_srli_epi16(tmp1, 4);
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y = _mm_shuffle_epi8(tmp0, y);
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tmp1 = _mm_shuffle_epi8(tmp0, tmp1);
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r_.m128i = _mm_add_epi8(y, tmp1);
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#elif defined(SIMDE_X86_SSSE3_NATIVE)
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__m128i tmp0 = _mm_set1_epi8(0x0f);
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__m128i tmp1 = a_.m128i;
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tmp1 = _mm_and_si128(tmp1, tmp0);
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tmp0 = _mm_andnot_si128(tmp0, a_.m128i);
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__m128i y = _mm_set_epi8(4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0);
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tmp0 = _mm_srli_epi16(tmp0, 4);
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y = _mm_shuffle_epi8(y, tmp1);
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tmp1 = _mm_set_epi8(4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0);
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tmp1 = _mm_shuffle_epi8(tmp1, tmp0);
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r_.m128i = _mm_add_epi8(y, tmp1);
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#elif defined(SIMDE_X86_SSE2_NATIVE)
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__m128i tmp = _mm_and_si128(_mm_srli_epi16(a_.m128i, 1), _mm_set1_epi8(0x55));
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a_.m128i = _mm_sub_epi8(a_.m128i, tmp);
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tmp = a_.m128i;
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a_.m128i = _mm_and_si128(a_.m128i, _mm_set1_epi8(0x33));
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tmp = _mm_and_si128(_mm_srli_epi16(tmp, 2), _mm_set1_epi8(0x33));
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a_.m128i = _mm_add_epi8(a_.m128i, tmp);
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tmp = _mm_srli_epi16(a_.m128i, 4);
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a_.m128i = _mm_add_epi8(a_.m128i, tmp);
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r_.m128i = _mm_and_si128(a_.m128i, _mm_set1_epi8(0x0f));
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#else
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SIMDE_VECTORIZE
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for (size_t i = 0 ; i < (sizeof(r_.values) / sizeof(r_.values[0])) ; i++) {
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r_.values[i] = HEDLEY_STATIC_CAST(int8_t, simde_x_arm_neon_cntb(HEDLEY_STATIC_CAST(uint8_t, a_.values[i])));
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}
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#endif
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return simde_int8x16_from_private(r_);
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#endif
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}
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#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
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#undef vcntq_s8
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#define vcntq_s8(a) simde_vcntq_s8((a))
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#endif
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SIMDE_FUNCTION_ATTRIBUTES
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simde_uint8x16_t
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simde_vcntq_u8(simde_uint8x16_t a) {
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return simde_vreinterpretq_u8_s8(simde_vcntq_s8(simde_vreinterpretq_s8_u8(a)));
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}
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#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
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#undef vcntq_u8
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#define vcntq_u8(a) simde_vcntq_u8((a))
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#endif
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SIMDE_FUNCTION_ATTRIBUTES
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simde_poly8x8_t
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simde_vcnt_p8(simde_poly8x8_t a) {
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#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
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return vcnt_p8(a);
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#else
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return simde_vreinterpret_p8_s8(simde_vcnt_s8(simde_vreinterpret_s8_p8(a)));
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#endif
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}
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#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
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#undef vcnt_p8
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#define vcnt_p8(a) simde_vcnt_p8((a))
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#endif
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SIMDE_FUNCTION_ATTRIBUTES
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simde_poly8x16_t
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simde_vcntq_p8(simde_poly8x16_t a) {
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#if defined(SIMDE_ARM_NEON_A32V7_NATIVE)
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return vcntq_p8(a);
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#else
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return simde_vreinterpretq_p8_s8(simde_vcntq_s8(simde_vreinterpretq_s8_p8(a)));
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#endif
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}
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#if defined(SIMDE_ARM_NEON_A32V7_ENABLE_NATIVE_ALIASES)
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#undef vcntq_p8
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#define vcntq_p8(a) simde_vcntq_p8((a))
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#endif
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SIMDE_END_DECLS_
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HEDLEY_DIAGNOSTIC_POP
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#endif /* !defined(SIMDE_ARM_NEON_CNT_H) */
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