The experimental literature of the internet: an annotated bibliography

Compilers for new machines with 64-bit addresses must generate code that works when the memory used by the program is large. procedures and global variables are accessed indirectly via global address tables, and calling conventions include code to establish the addressability of the appropriate tables. In the common case of a program that does not require a lot of memory, all of this can be simplified considerably, with a corresponding reduction in program size and execution time.We have used our link-time code modification system OM to perform program transformations related to globat address use on the Alpha AXP. Though simple, many of these are whole-program optimization that can be done only when we can see the entire program at once, so link-time is an ideal occasion to perform them. This paper describes the optimization performed and shows their effects on program size and performance. Relatively modest transformations, possible without moving code, improve the performance of SPEC benchmarks by an average of 1.5Y0.More ambitious transformations, requiring an understanding of program structure that is thorough but not difficult at link-time, can do even better, reducing program size by 10% or more, and improving performance by an average of 3.87i0.Even a program compiled monolithically with interprocedurat optimization can benefit nearly as much from this teehnique, if it contains statically-linked pre-compiled library code. When the benchmark sources were compiled in this way, we were still able to improve their performance by 1.35% with the modest transformations and 3.4% with the ambitious transformations.Permission to co y without fee all or part of this material is J' granted provid that the copies are not made or distributed for direct commercial advantage, the ACM copyright notice and the title of the publication and its date appear, and notice is given that copying is by permission of the Association of Computing Machinery. To copy otherwise, or to republish, requires a tee and/or specific permission. SIGPLAN 94-6/

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The experimental literature of the internet: an annotated bibliography

Cited by 2 publications

References 58 publications

The relationship between conformance testing of and interoperability between OSI systems

The relationship between conformance testing of and interoperability between OSI systems

Link-time optimization of address calculation on a 64-bit architecture

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