SVE Instruction List by Dougall Johnson
See "CPY (SIMD&FP scalar)" in the exploration tools

CPY (SIMD&FP scalar): Copy SIMD&FP scalar register to vector elements (predicated)

CPY Zd.H, Pg/M, Hn (SVE (SME
svbfloat16_t svdup[_n]_bf16_m(svbfloat16_t inactive, svbool_t pg, bfloat16_t op)
svfloat16_t svdup[_n]_f16_m(svfloat16_t inactive, svbool_t pg, float16_t op)
svint16_t svdup[_n]_s16_m(svint16_t inactive, svbool_t pg, int16_t op)
svuint16_t svdup[_n]_u16_m(svuint16_t inactive, svbool_t pg, uint16_t op)

128-bit SVE

Set all 16-bit lanes of (2) to (1).

256-bit SVE

Set all 16-bit lanes of (2) to (1).

512-bit SVE

Set all 16-bit lanes of (2) to (1).
Larger sizes

1024-bit SVE

Set all 16-bit lanes of (2) to (1).

2048-bit SVE

Set all 16-bit lanes of (2) to (1).
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.