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IA32 SSE3 精要
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== 指令列表 == <source lang=bash> Arithmetic * ADDSUBPD - ( Add-Subtract-Packed-Double ) o Input - { A0, A1 }, { B0, B1 } o Output - { A0 - B0, A1 + B1 } * ADDSUBPS - ( Add-Subtract-Packed-Single ) o Input: { A0, A1, A2, A3 }, { B0, B1, B2, B3 } o Output: { A0 - B0, A1 + B1, A2 - B2, A3 + B3 } AOS ( Array Of Structures ) * HADDPD - ( Horizontal-Add-Packed-Double ) o Input: { A0, A1 }, { B0, B1 } o Output: { A0 + A1, B0 + B1 } * HADDPS ( Horizontal-Add-Packed-Single ) o Input: { A0, A1, A2, A3 }, { B0, B1, B2, B3 } o Output: { A0 + A1, A2 + A3, B0 + B1, B2 + B3 } * HSUBPD - ( Horizontal-Subtract-Packed-Double ) o Input: { A0, A1 }, { B0, B1 } o Output: { A0 - A1, B0 - B1 } * HSUBPS - ( Horizontal-Subtract-Packed-Single ) o Input: { A0, A1, A2, A3 }, { B0, B1, B2, B3 } o Output: { A0 - A1, A2 - A3, B0 - B1, B2 - B3 } * LDDQU - This is an alternative misaligned integer vector load that has better performance on NetBurst architectures for loads that cross cacheline boundaries. It can be helpful for video compression tasks. * MOVDDUP, MOVSHDUP, MOVSLDUP - These are also used for complex numbers, and can be helpful for wave calculation like sound. * FISTTP - Like the older x87 FISTP instruction, but ignores the floating point control register's rounding mode settings and uses the "chop" (truncate) mode instead. Allows omission of the expensive loading and re-loading of the control register in languages such as C where float-to-int conversion requires truncate behaviour by standard. Intel Instructions * MONITOR, MWAIT - These optimize multi-threaded applications, giving processors with Hyper-Threading better performance. </source> <br><br> <br><br> <br><br> <br><br> <br><br> <br><br> <br><br> <br><br>
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