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Fix aarch64 compilation #9

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Fix aarch64 compilation #9

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12 changes: 12 additions & 0 deletions src/portability.h
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,18 @@ static inline int hamming(uint64_t input_num) {
#include <cstdint>
#include <cstdlib>

#ifdef __ARM_NEON
#include <arm_neon.h>

uint64_t neonmovemask_bulk(uint8x16_t p0, uint8x16_t p1, uint8x16_t p2, uint8x16_t p3) {
uint8x16_t t0 = vbslq_u8(vdupq_n_u8(0x55), p0, p1);
uint8x16_t t1 = vbslq_u8(vdupq_n_u8(0x55), p2, p3);
uint8x16_t combined = vbslq_u8(vdupq_n_u8(0x33), t0, t1);
int8x8_t sum = vshrn_n_s16(vreinterpretq_s16_u8(combined), 4);
return vget_lane_u64(vreinterpret_u64_s8(sum), 0);
}
#endif

#if defined(__BMI2__) || defined(__POPCOUNT__) || defined(__AVX2__)
#include <x86intrin.h>
#endif
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