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https://github.com/simdjson/simdjson
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strager
5510089d45
* Rename simdjson_really_inline -> simdjson_inline I want to change the simdjson_really_inline macro to sometimes not force inlining. After that upcoming change, the name simdjson_really_inline will no longer makes sense. Rename simdjson_really_inline to simdjson_inline. This patch should not change semantics; simdjson_inline still forces inlining as before. Some functions still need to be really inlined for ABI reasons. (GCC's -Wpsabi complains otherwise.) Leave those functions marked as simdjson_really_inline. * Improve build times for debug builds simdjson_inline is used for most simdjson functions. It forces inlining. In unoptimized/debug builds, this can lead to a lot of machine code being generated (especially with Address Sanitizer), causing slow compilation. Change simdjson_inline to force inlining only for optimized builds. Sometimes, the programmer might want a slightly-optimized build and want fast compilation (e.g. GCC's -Og mode). Allow simdjson users to define the simdjson_inline macro themselves (e.g. on the command line: -Dsimdjson_inline=inline) in cases where the default behavior is undesired. This patch reduced build times by over 75% for ondemand_object_tests.cpp with GCC 9.4.0 and CMAKE_BUILD_TYPE=Debug on my AMD 5950X: Before: 6.885 6.683 6.971 6.957 6.949 seconds (5 samples) After: 1.492 1.551 1.494 1.490 1.531 seconds (5 samples)
35 lines
1.2 KiB
C++
35 lines
1.2 KiB
C++
#ifndef SIMDJSON_FALLBACK_NUMBERPARSING_H
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#define SIMDJSON_FALLBACK_NUMBERPARSING_H
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#ifdef JSON_TEST_NUMBERS // for unit testing
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void found_invalid_number(const uint8_t *buf);
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void found_integer(int64_t result, const uint8_t *buf);
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void found_unsigned_integer(uint64_t result, const uint8_t *buf);
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void found_float(double result, const uint8_t *buf);
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#endif
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namespace simdjson {
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namespace SIMDJSON_IMPLEMENTATION {
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namespace {
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// credit: https://johnnylee-sde.github.io/Fast-numeric-string-to-int/
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static simdjson_inline uint32_t parse_eight_digits_unrolled(const char *chars) {
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uint64_t val;
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memcpy(&val, chars, sizeof(uint64_t));
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val = (val & 0x0F0F0F0F0F0F0F0F) * 2561 >> 8;
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val = (val & 0x00FF00FF00FF00FF) * 6553601 >> 16;
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return uint32_t((val & 0x0000FFFF0000FFFF) * 42949672960001 >> 32);
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}
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static simdjson_inline uint32_t parse_eight_digits_unrolled(const uint8_t *chars) {
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return parse_eight_digits_unrolled(reinterpret_cast<const char *>(chars));
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}
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} // unnamed namespace
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} // namespace SIMDJSON_IMPLEMENTATION
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} // namespace simdjson
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#define SIMDJSON_SWAR_NUMBER_PARSING 1
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#include "simdjson/generic/numberparsing.h"
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#endif // SIMDJSON_FALLBACK_NUMBERPARSING_H
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