SVE Instruction List by Dougall Johnson
See "DUPM" in the exploration tools

DUPM: Broadcast logical bitmask immediate to vector (unpredicated)

DUPM Zd.D, #const (SVE (SME
svint64_t svdup[_n]_s64(int64_t op)
svuint64_t svdup[_n]_u64(uint64_t op)
svint64_t svdup[_n]_s64_x(svbool_t pg, int64_t op)
svuint64_t svdup[_n]_u64_x(svbool_t pg, uint64_t op)

128-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The value from (1) must be a valid logical immediate.

256-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The value from (1) must be a valid logical immediate.

512-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The value from (1) must be a valid logical immediate.

Larger sizes

1024-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The value from (1) must be a valid logical immediate.

2048-bit SVE

Set all 64-bit lanes of (2) to the immediate value from (1). The value from (1) must be a valid logical immediate.

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