Invention Grant
US08918664B2 Integrated circuit, computer system, and control method, including power saving control to reduce power consumed by execution of a loop
有权
集成电路，计算机系统和控制方法，包括省电控制，以减少执行循环消耗的功耗
- Patent Title: Integrated circuit, computer system, and control method, including power saving control to reduce power consumed by execution of a loop
- Patent Title (中): 集成电路，计算机系统和控制方法，包括省电控制，以减少执行循环消耗的功耗
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Application No.: US13395985Application Date: 2011-06-07
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Publication No.: US08918664B2Publication Date: 2014-12-23
- Inventor: Masashi Sugiyama , Masahiko Saito
- Applicant: Masashi Sugiyama , Masahiko Saito
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2010-144799 20100625
- International Application: PCT/JP2011/003185 WO 20110607
- International Announcement: WO2011/161884 WO 20111229
- Main IPC: G06F1/32
- IPC: G06F1/32
Abstract:
An integrated circuit provided with a processor includes a loop detection unit that detects execution of a loop in the processor, a loop-carried dependence analysis unit that analyzes the loop in order to detect loop-carried dependence, and a power control unit that performs power saving control when no loop-carried dependence is detected. By detecting whether a loop has loop-carried dependence, loops for calculation or the like can be excluded from power saving control. As a result, a larger variety of busy-waits can be detected, and the amount of power wasted by a busy-wait can be reduced.
Public/Granted literature
- US20120179924A1 INTEGRATED CIRCUIT, COMPUTER SYSTEM, AND CONTROL METHOD Public/Granted day:2012-07-12
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