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by adrian_b
1364 days ago
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I assume that as you say, whoever used this instruction was using it for multiplying 32-bit numbers. On AMD Zen 4 and Intel Cannon Lake or newer (when AVX-512 is supported), the fastest method to multiply big numbers is to use the IFMA instructions, which reuse the floating-point multipliers to generate 104-bit products of 52-bit numbers. |
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