Continuous trip count profiling for loop optimizations in...

Details Continuous trip count profiling for loop optimizations in... Continuous trip count profiling for loop optimizations in...

2004-03-31

2008-09-23

Dam, Tuan Q. (Department: 2192)

Data processing: software development, installation, and managem

Software program development tool

Translation of code

C717S130000, C717S153000, C717S160000

Reexamination Certificate

active

07428731

ABSTRACT:
A method, machine readable medium, and system are disclosed. In one embodiment the method comprises collecting a loop trip count continuously during runtime of a region of code being executed that contains a loop, categorizing the trip count to identify one or more code modification techniques applicable to the loop, and dynamically applying the one or more applicable code modification techniques to alter the code that relates to the loop.

REFERENCES:
patent: 6938249 (2005-08-01), Roediger et al.
Ghost et al., “Integrating High-Level Optimizations in a Production Compiler: Design and Implementation Experience”, Apr. 4, 2002, Springer-Verlag Berlin Heidelberg, pp. 303-319.
Chen et al., “Dynamic Trace Selection Using Performance Monitoring Hardware Sampling”, Mar. 23, 2003, IEEE, pp. 79-90.
Lu et al., “The Performance of Runtime Data Cache Prefetching in a Dynamic Optimization System”, Dec. 3, 2003, IEEE, pp. 1-11.
Wu et al., “Continuous Trip Count Profiling for Loop Optimizations in Two-phase Dynamic Binary Translators”, Feb. 15, 2004, IEEE, pp. 1-10.
Wu et al., “The Accuracy of Inital Prediction in Two-Phase Dynamic Binary Translators”, Mar. 20, 2004, IEEE, pp. 1-12.
Arnold, Matthew, Ryder Barbara G., A Framework for Reducing the Cost of Instrumented Code, PLDI 2001, Snowbird, Utah, Copyright 2001 ACM, 12 pages.
Chen, Michael K., Olukotun, Kunle, Test: A Tracer for Extracting Speculative Threads, © 2003 IEEE, Published in the Proceedings of CGO'03, Mar. 24-26, 2003 in San Francisco, CA, U.S.A., IEEE Service Center/445 Hoes Lane/P.O. Box 1331/Piscataway, NJ 08855-1331, U.S.A., 12 pages.

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