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Introduce ARM Neon and SSE2 SIMD. #743

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Introduce ARM Neon and SSE2 SIMD. #743

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259090c
Introduce ARM Neon SIMD.
samyron Feb 1, 2025
9ad196e
Use the 'rules' implementation instead of the lookup table implementa…
samyron Feb 5, 2025
0c1958a
Merge branch 'master' into arm-neon-simd-v2
samyron Feb 5, 2025
d8a2e56
Refactoring and simplifications.
samyron Feb 5, 2025
89ba0be
Load the SIMD lookup table explicitly without loops.
samyron Feb 6, 2025
a23b84e
Use only 2 64-byte lookup tables for the neon escape_table_basic as w…
samyron Feb 6, 2025
5506091
Simplifications.
samyron Feb 10, 2025
3ae5677
A few more cleanups.
samyron Feb 10, 2025
332107d
Use SIMD for fewer than 16 characters (but at least 8) remaining.
samyron Mar 24, 2025
a47ffa0
Add x86-64 SSE2 support with runtime detection.
samyron Apr 5, 2025
b2cab33
Simplified the SSE2 implementation.
samyron Apr 5, 2025
5cd7b5e
A small simplification to the ARM Neon implementation.
samyron Apr 5, 2025
1d00db9
More cleanups.
samyron Apr 5, 2025
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31 changes: 31 additions & 0 deletions ext/json/ext/generator/extconf.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -6,5 +6,36 @@
else
append_cflags("-std=c99")
$defs << "-DJSON_GENERATOR"

if enable_config('generator-use-simd', default=true)
if RbConfig::CONFIG['host_cpu'] =~ /^(arm.*|aarch64.*)/
# Try to compile a small program using NEON instructions
if have_header('arm_neon.h')
have_type('uint8x16_t', headers=['arm_neon.h']) && try_compile(<<~'SRC')
#include <arm_neon.h>
int main() {
uint8x16_t test = vdupq_n_u8(32);
return 0;
}
SRC
$defs.push("-DENABLE_SIMD")
end
end

if have_type('__m128i', headers=['x86intrin.h']) && try_compile(<<~'SRC', opt='-msse2')
#include <x86intrin.h>
int main() {
__m128i test = _mm_set1_epi8(32);
return 0;
}
SRC
$defs.push("-DENABLE_SIMD")
end

have_header('cpuid.h')
end

create_header

create_makefile 'json/ext/generator'
end
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