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.B, Pg/M, Bn (SVE (SME
svint8_t svdup[_n]_s8_m(svint8_t inactive, svbool_t pg, int8_t op)
svuint8_t svdup[_n]_u8_m(svuint8_t inactive, svbool_t pg, uint8_t op)

128-bit SVE

Set all 8-bit lanes of (2) to (1).

256-bit SVE

Set all 8-bit lanes of (2) to (1).

512-bit SVE

Set all 8-bit lanes of (2) to (1).

Larger sizes

1024-bit SVE

Set all 8-bit lanes of (2) to (1).

2048-bit SVE

Set all 8-bit lanes of (2) to (1).

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