SVE Instruction List by Dougall Johnson
PMLAL: Multi-vector polynomial multiply long and accumulate
PMLAL { Zda1.Q-Zda2.Q }, Zn.D, Zm.D (SVE-AES2+NS (SSVE-AES+AES2
128-bit SVE
Interpreting each 64-bit element from (1) and (2) as a ℤ2 polynomial, set each double-width element of (5) to the product of the corresponding even pair plus (3), and each element of (6) to the product of the corresponding odd pair plus (4). This can also be described as a carryless multiply-add, using exclusive-or for both the multiplication and the addition.
256-bit SVE
Interpreting each 64-bit element from (1) and (2) as a ℤ2 polynomial, set each double-width element of (5) to the product of the corresponding even pair plus (3), and each element of (6) to the product of the corresponding odd pair plus (4). This can also be described as a carryless multiply-add, using exclusive-or for both the multiplication and the addition.
512-bit SVE
Interpreting each 64-bit element from (1) and (2) as a ℤ2 polynomial, set each double-width element of (5) to the product of the corresponding even pair plus (3), and each element of (6) to the product of the corresponding odd pair plus (4). This can also be described as a carryless multiply-add, using exclusive-or for both the multiplication and the addition.
Larger sizes
1024-bit SVE
Interpreting each 64-bit element from (1) and (2) as a ℤ2 polynomial, set each double-width element of (5) to the product of the corresponding even pair plus (3), and each element of (6) to the product of the corresponding odd pair plus (4). This can also be described as a carryless multiply-add, using exclusive-or for both the multiplication and the addition.
2048-bit SVE
Interpreting each 64-bit element from (1) and (2) as a ℤ2 polynomial, set each double-width element of (5) to the product of the corresponding even pair plus (3), and each element of (6) to the product of the corresponding odd pair plus (4). This can also be described as a carryless multiply-add, using exclusive-or for both the multiplication and the addition.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.