SVE Instruction List by Dougall Johnson
See "SQDMULH (vectors)" in the exploration tools

SQDMULH (vectors): Signed saturating doubling multiply high (unpredicated)

SQDMULH Zd.D, Zn.D, Zm.D (SVE2 (SME
svint64_t svqdmulh[_s64](svint64_t op1, svint64_t op2)

128-bit SVE

For each signed 64-bit integer set (3) to ( (1) * (2) ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF.

256-bit SVE

For each signed 64-bit integer set (3) to ( (1) * (2) ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF.

512-bit SVE

For each signed 64-bit integer set (3) to ( (1) * (2) ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF.
Larger sizes

1024-bit SVE

For each signed 64-bit integer set (3) to ( (1) * (2) ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF.

2048-bit SVE

For each signed 64-bit integer set (3) to ( (1) * (2) ) >> 63, with signed saturation to 0x7FFFFFFFFFFFFFFF.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.