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公开(公告)号:US20120191952A1
公开(公告)日:2012-07-26
申请号:US13011637
申请日:2011-01-21
申请人: Jay E. FLEISCHMAN , Matthew M. CRUM , Kelvin GOVEAS , Michael D. ESTLICK , Barry J. ARNOLD , Ranganathan SUDHAKAR , Betty A. MCDANIEL
发明人: Jay E. FLEISCHMAN , Matthew M. CRUM , Kelvin GOVEAS , Michael D. ESTLICK , Barry J. ARNOLD , Ranganathan SUDHAKAR , Betty A. MCDANIEL
CPC分类号: G06F9/30094 , G06F9/30109 , G06F9/30192 , G06F9/384
摘要: Methods and apparatuses are provided for increased efficiency and enhanced power saving in a processor via scalar code optimization. The method comprises determining that an instruction comprises a scalar instruction and then processing the instruction using only a lower portion of an XMM register. The apparatus comprises an operational unit capable of determining whether an instruction comprises a scalar instruction and execution units responsive that determining for processing the scalar instruction using only a lower portion of an XMM register of the processor. By not processing the upper portion of the XMM register efficiency is increased and power saving is enhanced.
摘要翻译: 提供了通过标量代码优化在处理器中提高效率和增强功率节省的方法和装置。 该方法包括确定指令包括标量指令,然后仅使用XMM寄存器的下部来处理该指令。 所述装置包括能够确定指令是否包括标量指令的操作单元,并且所述执行单元响应于仅使用所述处理器的XMM寄存器的下部来确定所述标量指令的处理。 通过不处理XMM寄存器的上部部分,效率提高,省电。