See "CPY (immediate, merging)" in the exploration tools

CPY (immediate, merging): Copy signed integer immediate to vector elements (merging)

CPY Zd.D, Pg/M, #imm (SVE (SME

svint64_t svdup[_n]_s64_m(svint64_t inactive, svbool_t pg, int64_t op)

svuint64_t svdup[_n]_u64_m(svuint64_t inactive, svbool_t pg, uint64_t op)

128-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The immediate value is either in the range -128 ≤ imm ≤ 127, or is a multiple of 256 in the range -32768 ≤ imm ≤ 32512.

256-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The immediate value is either in the range -128 ≤ imm ≤ 127, or is a multiple of 256 in the range -32768 ≤ imm ≤ 32512.

512-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The immediate value is either in the range -128 ≤ imm ≤ 127, or is a multiple of 256 in the range -32768 ≤ imm ≤ 32512.

Larger sizes

1024-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The immediate value is either in the range -128 ≤ imm ≤ 127, or is a multiple of 256 in the range -32768 ≤ imm ≤ 32512.

2048-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The immediate value is either in the range -128 ≤ imm ≤ 127, or is a multiple of 256 in the range -32768 ≤ imm ≤ 32512.

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