SVE Instruction List by Dougall Johnson
See "LASTB (scalar)" in the exploration tools

LASTB (scalar): Extract last element to general-purpose register

LASTB Wd, Pg, Zn.H (SVE (SME
bfloat16_t svlastb[_bf16](svbool_t pg, svbfloat16_t op)
float16_t svlastb[_f16](svbool_t pg, svfloat16_t op)
int16_t svlastb[_s16](svbool_t pg, svint16_t op)
uint16_t svlastb[_u16](svbool_t pg, svuint16_t op)

128-bit SVE

Set (3) to the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero. If there are no such elements, set (3) to the last (leftmost) element from (1).

256-bit SVE

Set (3) to the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero. If there are no such elements, set (3) to the last (leftmost) element from (1).

512-bit SVE

Set (3) to the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero. If there are no such elements, set (3) to the last (leftmost) element from (1).

Larger sizes

1024-bit SVE

Set (3) to the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero. If there are no such elements, set (3) to the last (leftmost) element from (1).

2048-bit SVE

Set (3) to the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero. If there are no such elements, set (3) to the last (leftmost) element from (1).

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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.