SVE Instruction List by Dougall Johnson
LASTA (SIMD&FP scalar): Extract element after last to SIMD&FP scalar register
LASTA Hd, Pg, Zn.H (SVE (SME
bfloat16_t svlasta[_bf16](svbool_t pg, svbfloat16_t op)
float16_t svlasta[_f16](svbool_t pg, svfloat16_t op)
int16_t svlasta[_s16](svbool_t pg, svint16_t op)
uint16_t svlasta[_u16](svbool_t pg, svuint16_t op)
128-bit SVE
Find the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero, then set (3) to the next element. If all corresponding predicate bits are zero, or the last corresponding predicate bit is non-zero, set (3) to the first (rightmost) element from (1).
256-bit SVE
Find the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero, then set (3) to the next element. If all corresponding predicate bits are zero, or the last corresponding predicate bit is non-zero, set (3) to the first (rightmost) element from (1).
512-bit SVE
Find the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero, then set (3) to the next element. If all corresponding predicate bits are zero, or the last corresponding predicate bit is non-zero, set (3) to the first (rightmost) element from (1).
Larger sizes
1024-bit SVE
Find the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero, then set (3) to the next element. If all corresponding predicate bits are zero, or the last corresponding predicate bit is non-zero, set (3) to the first (rightmost) element from (1).
2048-bit SVE
Find the last (leftmost) 16-bit element from (2) where the corresponding predicate bit in (1) is non-zero, then set (3) to the next element. If all corresponding predicate bits are zero, or the last corresponding predicate bit is non-zero, set (3) to the first (rightmost) element from (1).
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.