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218 lines (193 loc) · 7.55 KB
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/*
* Copyright (c) 2025 OceanBase.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "share/ob_define.h"
#include "ob_fast_parser.h"
#if defined(__GNUC__) && defined(__x86_64__)
#include "share/vector_type/ob_vector_op_common.h"
#endif
namespace oceanbase
{
namespace common
{
#if defined(__GNUC__) && defined(__x86_64__)
OB_DECLARE_AVX512_SPECIFIC_CODE (
inline static void get_first_non_hex_char_avx512(oceanbase::sql::ObRawSql& raw_sql)
{
__m512i zero = _mm512_set1_epi8('0');
__m512i nine = _mm512_set1_epi8('9');
__m512i a = _mm512_set1_epi8('a');
__m512i f = _mm512_set1_epi8('f');
__m512i A = _mm512_set1_epi8('A');
__m512i F = _mm512_set1_epi8('F');
int64_t hex_pos = raw_sql.cur_pos_;
while (hex_pos + 64 <= raw_sql.raw_sql_len_) {
__m512i chars = _mm512_loadu_si512((__m512i *)(raw_sql.raw_sql_ + hex_pos));
__mmask64 mask = (_mm512_cmpge_epu8_mask(chars, zero) & _mm512_cmple_epu8_mask(chars, nine)) |
(_mm512_cmpge_epu8_mask(chars, a) & _mm512_cmple_epu8_mask(chars, f)) |
(_mm512_cmpge_epu8_mask(chars, A) & _mm512_cmple_epu8_mask(chars, F));
if (mask != 0xFFFFFFFFFFFFFFFF) {
raw_sql.cur_pos_ = hex_pos + _tzcnt_u64(~mask);
return;
}
hex_pos += 64;
}
for (; hex_pos < raw_sql.raw_sql_len_; ++hex_pos) {
char ch = raw_sql.raw_sql_[hex_pos];
if (!(ch != sql::INVALID_CHAR && sql::HEX_FLAGS[static_cast<uint8_t>(ch)])) {
break;
}
}
raw_sql.cur_pos_ = hex_pos;
if (hex_pos >= raw_sql.raw_sql_len_) {
raw_sql.search_end_ = true;
raw_sql.cur_pos_ = raw_sql.raw_sql_len_;
}
}
)
OB_DECLARE_AVX2_SPECIFIC_CODE(
inline static void get_first_non_hex_char_avx2(oceanbase::sql::ObRawSql& raw_sql)
{
__m256i zero = _mm256_set1_epi8('0' - 1);
__m256i nine = _mm256_set1_epi8('9' + 1);
__m256i a = _mm256_set1_epi8('a' - 1);
__m256i f = _mm256_set1_epi8('f' + 1);
__m256i A = _mm256_set1_epi8('A' - 1);
__m256i F = _mm256_set1_epi8('F' + 1);
int64_t hex_pos = raw_sql.cur_pos_;
while (hex_pos + 32 <= raw_sql.raw_sql_len_) {
__m256i chars = _mm256_loadu_si256((__m256i *)(raw_sql.raw_sql_ + hex_pos));
__m256i num_mask1 = _mm256_and_si256(_mm256_cmpgt_epi8(chars, zero), _mm256_cmpgt_epi8(nine, chars));
__m256i num_mask2 = _mm256_and_si256(_mm256_cmpgt_epi8(chars, a), _mm256_cmpgt_epi8(f, chars));
__m256i num_mask3 = _mm256_and_si256(_mm256_cmpgt_epi8(chars, A), _mm256_cmpgt_epi8(F, chars));
int32_t mask = _mm256_movemask_epi8(_mm256_or_si256(_mm256_or_si256(num_mask1, num_mask2), num_mask3));
if (mask != 0xFFFFFFFFFFFFFFFF) {
raw_sql.cur_pos_ = hex_pos + _tzcnt_u32(~mask);
return;
}
hex_pos += 32;
}
for (; hex_pos < raw_sql.raw_sql_len_; ++hex_pos) {
char ch = raw_sql.raw_sql_[hex_pos];
if (!(ch != sql::INVALID_CHAR && sql::HEX_FLAGS[static_cast<uint8_t>(ch)])) {
break;
}
}
raw_sql.cur_pos_ = hex_pos;
if (hex_pos >= raw_sql.raw_sql_len_) {
raw_sql.search_end_ = true;
raw_sql.cur_pos_ = raw_sql.raw_sql_len_;
}
}
)
void process_hex_chars_simd(oceanbase::sql::ObRawSql& raw_sql, bool& is_arch_supported)
{
#if OB_USE_MULTITARGET_CODE
if (common::is_arch_supported(ObTargetArch::AVX512)) {
common::specific::avx512::get_first_non_hex_char_avx512(raw_sql);
} else if (common::is_arch_supported(ObTargetArch::AVX2)) {
common::specific::avx2::get_first_non_hex_char_avx2(raw_sql);
} else {
is_arch_supported = false;
}
#else
is_arch_supported = false;
#endif
}
OB_DECLARE_AVX512_SPECIFIC_CODE (
inline static void process_binary_avx512(const char **src, const char *end, char **dest)
{
__m512i zero = _mm512_set1_epi8('0');
__m512i nine = _mm512_set1_epi8('9');
__m512i extra = _mm512_set1_epi8(9);
__m512i low_mask = _mm512_set1_epi16(0x00FF);
__m512i high_mask = _mm512_set1_epi16(0xFF00);
__m512i low_nibble_mask = _mm512_set1_epi8(0x0F);
for (; *src + 64 <= end; *src += 64, *dest += 32) {
__m512i input = _mm512_loadu_si512((__m512i*)*src);
__m512i rawbytes = _mm512_add_epi64(_mm512_and_si512(input, low_nibble_mask),
_mm512_maskz_loadu_epi8(~(_mm512_cmpge_epu8_mask(input, zero) & _mm512_cmple_epu8_mask(input, nine)), &extra));
__m512i low_bytes = _mm512_slli_epi16(_mm512_and_si512(rawbytes, low_mask), 4);
__m512i high_bytes = _mm512_srli_epi16(_mm512_and_si512(rawbytes, high_mask), 8);
__m256i tmp = _mm512_cvtepi16_epi8(_mm512_or_si512(low_bytes, high_bytes));
_mm256_storeu_si256((__m256i*)*dest, tmp);
}
}
)
OB_DECLARE_AVX2_SPECIFIC_CODE (
inline static __m256i char_nibble(const __m256i value) {
__m256i _9 = _mm256_set1_epi16(9);
__m256i _15 = _mm256_set1_epi16(0xf);
__m256i and15 = _mm256_and_si256(value, _15);
__m256i sr6 = _mm256_srai_epi16(value, 6);
__m256i mul = _mm256_maddubs_epi16(sr6, _9);
__m256i add = _mm256_add_epi16(mul, and15);
return add;
}
inline static void process_binary_avx2(const char **src, const char *end, char **dest)
{
const char *src_ = *src;
char *dest_ = *dest;
int len = (end - src_) / 2;
static const __m256i A_MASK = _mm256_setr_epi8(
0, -1, 2, -1, 4, -1, 6, -1, 8, -1, 10, -1, 12, -1, 14, -1,
0, -1, 2, -1, 4, -1, 6, -1, 8, -1, 10, -1, 12, -1, 14, -1);
static const __m256i B_MASK = _mm256_setr_epi8(
1, -1, 3, -1, 5, -1, 7, -1, 9, -1, 11, -1, 13, -1, 15, -1,
1, -1, 3, -1, 5, -1, 7, -1, 9, -1, 11, -1, 13, -1, 15, -1);
const __m256i* src_256 = reinterpret_cast<const __m256i*>(src_);
__m256i* dest_256 = reinterpret_cast<__m256i*>(dest_);
while (len >= 32) {
__m256i av1 = _mm256_lddqu_si256(src_256++); // 32 nibbles, 16 bytes
__m256i av2 = _mm256_lddqu_si256(src_256++);
// Separate high and low nibbles and extend into 16-bit elements
__m256i a1 = _mm256_shuffle_epi8(av1, A_MASK);
__m256i b1 = _mm256_shuffle_epi8(av1, B_MASK);
__m256i a2 = _mm256_shuffle_epi8(av2, A_MASK);
__m256i b2 = _mm256_shuffle_epi8(av2, B_MASK);
// Convert ASCII values to nibbles
a1 = char_nibble(a1);
a2 = char_nibble(a2);
b1 = char_nibble(b1);
b2 = char_nibble(b2);
// Nibbles to bytes
__m256i a4_1 = _mm256_slli_epi16(a1, 4);
__m256i a4_2 = _mm256_slli_epi16(a2, 4);
__m256i a4orb_1 = _mm256_or_si256(a4_1, b1);
__m256i a4orb_2 = _mm256_or_si256(a4_2, b2);
__m256i pck1 = _mm256_packus_epi16(a4orb_1, a4orb_2); // lo1 lo2 hi1 hi2
const int _0213 = 0b11011000;
__m256i bytes = _mm256_permute4x64_epi64(pck1, _0213);
_mm256_storeu_si256(dest_256++, bytes);
len -= 32;
}
*src = reinterpret_cast<const char*>(src_256);
*dest = reinterpret_cast<char *>(dest_256);
}
)
// called in parse_node.c
extern "C" void ob_parse_binary_simd(const char **src, const char *end, char **dest)
{
#if OB_USE_MULTITARGET_CODE
if (common::is_arch_supported(ObTargetArch::AVX512)) {
common::specific::avx512::process_binary_avx512(src, end, dest);
} else if (common::is_arch_supported(ObTargetArch::AVX2)) {
common::specific::avx2::process_binary_avx2(src, end, dest);
}
#endif
}
#endif
} // namespace common
} // namespace oceanbase