SVE Instruction List by Dougall Johnson
RBIT: Reverse bits (predicated)
RBIT Zd.H, Pg/Z, Zn.H (SVE2.2 (SME2.2
128-bit SVE

For each 16-bit integer set (2) to (1), with the order of the bits reversed.
256-bit SVE

For each 16-bit integer set (2) to (1), with the order of the bits reversed.
512-bit SVE

For each 16-bit integer set (2) to (1), with the order of the bits reversed.
Larger sizes
1024-bit SVE

For each 16-bit integer set (2) to (1), with the order of the bits reversed.
2048-bit SVE

For each 16-bit integer set (2) to (1), with the order of the bits reversed.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.