SSE4.2 Instruction Set Architecture (ISA) Extension

SSE4.2 instructions to be added with the Nehalem processors:

• CRC32
  Accumulate CRC32 Value
• PCMPESTRI
  Packed Compare Explicit Length Strings, Return Index
• PCMPESTRM
  Packed Compare Explicit Length Strings, Return Mask
• PCMPISTRI
  Packed Compare Implicit Length Strings, Return Index
• PCMPISTRM
  Packed Compare Implicit Length Strings, Return Mask
• PCMPGTQ
  Compare Packed Data for Greater Than
• POPCNT
  Return the Count of Number of Bits Set to 1