diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vppinfra/vector_neon.h | 33 |
1 files changed, 9 insertions, 24 deletions
diff --git a/src/vppinfra/vector_neon.h b/src/vppinfra/vector_neon.h index 6ca9c0b90a0..331b8ed6f5d 100644 --- a/src/vppinfra/vector_neon.h +++ b/src/vppinfra/vector_neon.h @@ -49,30 +49,15 @@ u64x2_is_all_zero (u64x2 x) always_inline u32 u8x16_compare_byte_mask (u8x16 x) { - static int8_t const __attribute__ ((aligned (16))) xr[8] = - { - -7, -6, -5, -4, -3, -2, -1, 0}; - uint8x8_t mask_and = vdup_n_u8 (0x80); - int8x8_t mask_shift = vld1_s8 (xr); - - uint8x8_t lo = vget_low_u8 (x); - uint8x8_t hi = vget_high_u8 (x); - - lo = vand_u8 (lo, mask_and); - lo = vshl_u8 (lo, mask_shift); - - hi = vand_u8 (hi, mask_and); - hi = vshl_u8 (hi, mask_shift); - - lo = vpadd_u8 (lo, lo); - lo = vpadd_u8 (lo, lo); - lo = vpadd_u8 (lo, lo); - - hi = vpadd_u8 (hi, hi); - hi = vpadd_u8 (hi, hi); - hi = vpadd_u8 (hi, hi); - - return ((hi[0] << 8) | (lo[0] & 0xff)); + uint8x16_t mask_shift = + { -7, -6, -5, -4, -3, -2, -1, 0, -7, -6, -5, -4, -3, -2, -1, 0 }; + uint8x16_t mask_and = vdupq_n_u8 (0x80); + x = vandq_u8 (x, mask_and); + x = vshlq_u8 (x, vreinterpretq_s8_u8 (mask_shift)); + x = vpaddq_u8 (x, x); + x = vpaddq_u8 (x, x); + x = vpaddq_u8 (x, x); + return vgetq_lane_u8 (x, 0) | (vgetq_lane_u8 (x, 1) << 8); } always_inline u32 |