Title:
アウトオブオーダー型マイクロプロセッサにおけるオペランド・ストア比較ハザードの予測及び回避
Document Type and Number:
Japanese Patent JP5850532
Kind Code:
B2
Abstract:
A method and information processing system manage load and store operations that can be executed out-of-order. At least one of a load instruction and a store instruction is executed. A determination is made that an operand store compare hazard has been encountered. An entry within an operand store compare hazard prediction table is created based on the determination. The entry includes at least an instruction address of the instruction that has been executed and a hazard indicating flag associated with the instruction. The hazard indicating flag indicates that the instruction has encountered the operand store compare hazard. When a load instruction is associated with the hazard indicating flag, the load instruction becomes dependent upon all store instructions associated with a substantially similar hazard indicating flag.
Inventors:
Jacobian, Christian
Tompt, Bryan, William
Alexander, Gregory, William
Alexander, curry, jason
Callan, Bryan, William
Mitchell, James, Russell
Che, Jonathan, Tin
Pulaski, Bryan, Robert
Tompt, Bryan, William
Alexander, Gregory, William
Alexander, curry, jason
Callan, Bryan, William
Mitchell, James, Russell
Che, Jonathan, Tin
Pulaski, Bryan, Robert
Application Number:
JP2012545216A
Publication Date:
February 03, 2016
Filing Date:
December 13, 2010
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classes:
G06F9/38
Domestic Patent References:
| JP2007536626A | ||||
| JP2005532613A |
Foreign References:
| US6463523 |
Other References:
Andreas MOSHOVOS et al.,"Streamlining Inter-operation Memory Communication via Data Dependence Prediction",Microarchitecture, 1997. Proceedings., Thirtieth Annual IEEE/ACM International Symposium on,米国,IEEE,1997年12月 3日,pages:235-245
Andreas MOSHOVOS et al.,"Speculative Memory Cloaking and Bypassing",[online],米国,CiteSeerX,1999年,pages:427-456,[平成26年9月22日検索]、インターネットURL:http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.74.2941&rep=rep1&type=pdf
Andreas MOSHOVOS et al.,"Speculative Memory Cloaking and Bypassing",[online],米国,CiteSeerX,1999年,pages:427-456,[平成26年9月22日検索]、インターネットURL:http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.74.2941&rep=rep1&type=pdf
Attorney, Agent or Firm:
Takeshi Ueno
Tasaichi Tanae
Tasaichi Tanae