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

ADDHNT: Add narrow high part (top)

ADDHNT Zd.B, Zn.H, Zm.H (SVE2 (SME
svint8_t svaddhnt[_s16](svint8_t even, svint16_t op1, svint16_t op2)
svuint8_t svaddhnt[_u16](svuint8_t even, svuint16_t op1, svuint16_t op2)

128-bit SVE

For each 16-bit integer set the odd 8-bit elements of (3) to ( (1) + (2) ) >> 8, preserving even elements.

256-bit SVE

For each 16-bit integer set the odd 8-bit elements of (3) to ( (1) + (2) ) >> 8, preserving even elements.

512-bit SVE

For each 16-bit integer set the odd 8-bit elements of (3) to ( (1) + (2) ) >> 8, preserving even elements.

Larger sizes

1024-bit SVE

For each 16-bit integer set the odd 8-bit elements of (3) to ( (1) + (2) ) >> 8, preserving even elements.

2048-bit SVE

For each 16-bit integer set the odd 8-bit elements of (3) to ( (1) + (2) ) >> 8, preserving even elements.

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