geofflangdale
geofflangdale
/ neon-pmovmskb-interleaved
Created
April 1, 2019 05:58
ARM NEON PMOVMSKB substitute to turn 4 _interleaved_ predicate results over 128-bits to a single 64-bit value
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| uint64_t neonmovemask_bulk(uint8x16_t p0, uint8x16_t p1, uint8x16_t p2, uint8x16_t p3) { | |
| const uint8x16_t bitmask1 = { 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, | |
| 0x01, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10}; | |
| const uint8x16_t bitmask2 = { 0x02, 0x20, 0x02, 0x20, 0x02, 0x20, 0x02, 0x20, | |
| 0x02, 0x20, 0x02, 0x20, 0x02, 0x20, 0x02, 0x20}; | |
| const uint8x16_t bitmask3 = { 0x04, 0x40, 0x04, 0x40, 0x04, 0x40, 0x04, 0x40, | |
| 0x04, 0x40, 0x04, 0x40, 0x04, 0x40, 0x04, 0x40}; | |
| const uint8x16_t bitmask4 = { 0x08, 0x80, 0x08, 0x80, 0x08, 0x80, 0x08, 0x80, | |
| 0x08, 0x80, 0x08, 0x80, 0x08, 0x80, 0x08, 0x80}; |
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