SVE Instruction List by Dougall Johnson
See "SQRDMLAH (indexed)" in the exploration tools

SQRDMLAH (indexed): Signed saturating rounding doubling multiply-add high to accumulator (indexed)

SQRDMLAH Zda.D, Zn.D, Zm.D[imm] (SVE2 (SME
svint64_t svqrdmlah_lane[_s64](svint64_t op1, svint64_t op2, svint64_t op3, uint64_t imm_index)

128-bit SVE

For each signed 64-bit integer set (4) to ( ( (3) << 63 ) + (1) * (2) + 0x4000000000000000 ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000. Within each 128-bit segment, the value used from (1) is specified by imm.

256-bit SVE

For each signed 64-bit integer set (4) to ( ( (3) << 63 ) + (1) * (2) + 0x4000000000000000 ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000. Within each 128-bit segment, the value used from (1) is specified by imm.

512-bit SVE

For each signed 64-bit integer set (4) to ( ( (3) << 63 ) + (1) * (2) + 0x4000000000000000 ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000. Within each 128-bit segment, the value used from (1) is specified by imm.

Larger sizes

1024-bit SVE

For each signed 64-bit integer set (4) to ( ( (3) << 63 ) + (1) * (2) + 0x4000000000000000 ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000. Within each 128-bit segment, the value used from (1) is specified by imm.

2048-bit SVE

For each signed 64-bit integer set (4) to ( ( (3) << 63 ) + (1) * (2) + 0x4000000000000000 ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000. Within each 128-bit segment, the value used from (1) is specified by imm.

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