TBX: Programmable table lookup in single vector table (merging)

TBX Zd.S, Zn.S, Zm.S (SVE2 (SME

svfloat32_t svtbx[_f32](svfloat32_t fallback, svfloat32_t data, svuint32_t indices)

svint32_t svtbx[_s32](svint32_t fallback, svint32_t data, svuint32_t indices)

svuint32_t svtbx[_u32](svuint32_t fallback, svuint32_t data, svuint32_t indices)

128-bit SVE

For each 32-bit index from (2), if 0 ≤ (2) < 4, set (4) to the 32-bit element at that index in (1), otherwise preserve the value from (3).

For each 32-bit index from (2), if 0 ≤ (2) < 8, set (4) to the 32-bit element at that index in (1), otherwise preserve the value from (3).

For each 32-bit index from (2), if 0 ≤ (2) < 16, set (4) to the 32-bit element at that index in (1), otherwise preserve the value from (3).

Larger sizes

For each 32-bit index from (2), if 0 ≤ (2) < 32, set (4) to the 32-bit element at that index in (1), otherwise preserve the value from (3).

For each 32-bit index from (2), if 0 ≤ (2) < 64, set (4) to the 32-bit element at that index in (1), otherwise preserve the value from (3).