SVE Instruction List by Dougall Johnson
AESDIMC: Multi-vector AES single round decryption and inverse mix columns
AESDIMC { Zdn1.B-Zdn4.B }, { Zdn1.B-Zdn4.B }, Zm.Q[index] (SVE-AES2+NS (SSVE-AES+AES2
128-bit SVE
For each 128-bit block of Zd1–Zd4 (2), XOR with the indexed key block from (1), then apply AES inverse ShiftRows, inverse SubBytes, and inverse MixColumns, writing results to Zd1–Zd4 (3). The key index selects a 128-bit block within each 512-bit segment of (1).
256-bit SVE
For each 128-bit block of Zd1–Zd4 (2), XOR with the indexed key block from (1), then apply AES inverse ShiftRows, inverse SubBytes, and inverse MixColumns, writing results to Zd1–Zd4 (3). The key index selects a 128-bit block within each 512-bit segment of (1).
512-bit SVE
For each 128-bit block of Zd1–Zd4 (2), XOR with the indexed key block from (1), then apply AES inverse ShiftRows, inverse SubBytes, and inverse MixColumns, writing results to Zd1–Zd4 (3). The key index selects a 128-bit block within each 512-bit segment of (1).
Larger sizes
1024-bit SVE
For each 128-bit block of Zd1–Zd4 (2), XOR with the indexed key block from (1), then apply AES inverse ShiftRows, inverse SubBytes, and inverse MixColumns, writing results to Zd1–Zd4 (3). The key index selects a 128-bit block within each 512-bit segment of (1).
2048-bit SVE
For each 128-bit block of Zd1–Zd4 (2), XOR with the indexed key block from (1), then apply AES inverse ShiftRows, inverse SubBytes, and inverse MixColumns, writing results to Zd1–Zd4 (3). The key index selects a 128-bit block within each 512-bit segment of (1).
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.