Speculative Register Promotion Using Advanced Load Address Table (ALAT)
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Speculative Register Promotion Using Advanced Load Address Table (ALAT)
Alternative title
Published Date
2002-09-19
Publisher
Type
Report
Abstract
Register promotion is intended to allocate more references into registers when aliases do not appear in a region of code. When possible aliases are assumed by the compilers, speculative register promotion with hardware support is able to further improve register promotion. This paper addresses how to use the advanced loads address table (ALAT) in speculative register promotion. A compiler algorithm for speculative data flow analysis is proposed. Then the traditional partial redundancy elimination can be applied. The transformations based on the ALAT arediscussed. Experiments with SPEC CPU2000 are conducted to reveal the potential of speculative register promotion, the precision of our alias speculation, and the efficiency of ALAT. The results show that our algorithm is able to speculatively locate the candidates with high precision. The execution time on Itanium machines of one benchmark, equake, can be reduced 17% by the speculation register promotion. The tradeoffs in the hardware support for speculative register promotion are analyzed.
Keywords
Description
Related to
Replaces
License
Series/Report Number
Technical Report; 02-032
Funding information
Isbn identifier
Doi identifier
Previously Published Citation
Other identifiers
Suggested citation
Chen, Tong; Lin, Jin; Hsu, Wei-Chung; Yew, Pen-Chung. (2002). Speculative Register Promotion Using Advanced Load Address Table (ALAT). Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/215535.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.