CPU (A64): Add Pmull_V Inst. with Clmul fast path for the "1/2D -> 1Q" variant & Sse fast path and slow path for both the "8/16B -> 8H" and "1/2D -> 1Q" variants; with Test. (#1817)
* Add Pmull_V Sse fast path only, both "8/16B -> 8H" and "1/2D -> 1Q" variants; with Test. * Add Clmul fast path for the 128 bits variant. * Small optimisation (save 60 instructions) for the Sse fast path about the 128 bits variant. * Add slow path, both variants. Fix V128 Shl/Shr when shift = 0. * A32: Add Vmull_I P64 variant (slow path); not tested. * A32: Add Vmull_I_P8_P64 Test and fix P64 variant.
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@ -1260,5 +1260,22 @@ namespace ARMeilleure.Instructions
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: (uint)(value >> 32);
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}
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#endregion
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public static V128 PolynomialMult64_128(ulong op1, ulong op2)
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{
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V128 result = V128.Zero;
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V128 op2_128 = new V128(op2, 0);
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for (int i = 0; i < 64; i++)
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{
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if (((op1 >> i) & 1) == 1)
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{
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result ^= op2_128 << i;
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}
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}
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return result;
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}
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}
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}
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