By George Necula (auth.), Alan Mycroft, Andreas Zeller (eds.)

ISBN-10: 354033050X

ISBN-13: 9783540330509

ETAPS 2006 was once the 9th example of the ecu Joint meetings on conception and perform of software program. ETAPS is an annual federated convention that used to be confirmed in 1998 through combining a few latest and new meetings. This 12 months it comprised ?ve meetings (CC, ESOP, FASE, FOSSACS, TACAS), 18 satellite tv for pc workshops (AC- CAT, AVIS, CMCS, COCV, DCC, EAAI, FESCA, FRCSS, GT-VMT, LDTA, MBT, QAPL, SC, SLAP, SPIN, TERMGRAPH, WITS and WRLA), tutorials, and 7 invited lectures (not together with those who have been speci?c to the satellite tv for pc events). We - ceived over 550 submissions to the ?ve meetings this 12 months, giving an total acc- tance cost of 23%, with reputation charges less than 30% for every convention. Congratu- tions to all of the authors who made it to the ?nal programme! i'm hoping that almost all of the opposite authorsstill founda approach of participatingin this excitingevent and that i wish you are going to proceed filing. The occasions that include ETAPS handle numerous features of the approach devel- ment procedure, together with speci?cation, layout, implementation, research and impro- ment. The languages, methodologies and instruments which aid those actions are all good inside of its scope. Di?erent blends of thought and perform are represented, with a tendency in the direction of conception with a realistic motivation at the one hand and soundly established perform at the different. a few of the concerns inquisitive about software program layout observe to platforms commonly, together with structures, and the emphasis on software program isn't really meant to be exclusive.

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Extra resources for Compiler Construction: 15th International Conference, CC 2006, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2006, Vienna, Austria, March 30-31, 2006. Proceedings

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8. =c2) return(c1>c2); i1++;i2++; Depending on the value of i1, block[i1] at line 5 may reuse the data touched at line 1 having a short reuse distance, or data from beyond the function having a long reuse distance. The change in the value of i1 may cause the load at line 5 to be in a different cache line from the load at line 1. In this case, our scheme cannot differentiate between the two patterns. Notice that this piece of code is similar to an unrolled loop, which suggests that compile-time loop unrolling may also influence our scheme.

Hind and Pioli report improvement with pointer analysis when SEG is used [10], but because their use of IN/OUT sets does not fully exploit sparsity. It is unclear how much our sparse analysis can benefit from an SEG, and we leave this study as future work. For some classes of data-flow analysis problems, there exist techniques for efficient analysis. For example, demand interprocedural data-flow analysis [11] can produce precise results in polynomial time for interprocedural, finite, distributive, subset problems (IFDS).

To provide a basis for comparison with our new algorithm, we use as our baseline a version of the priority-queue approach that does not use the identity transfer function or IN/OUT sets. Wegman and Zadeck pioneered the notion of sparse analysis in their sparse constant propagation algorithm [23]. We extend their approach to handle pointers, and we address the need to discover def-use chains on the fly as the analysis progresses. Another possible method of exploiting sparsity is to use a sparse evaluation graph (SEG) or its variants [4, 17], which are refinements of CFGs that eliminate irrelevant statements.

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Compiler Construction: 15th International Conference, CC 2006, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2006, Vienna, Austria, March 30-31, 2006. Proceedings by George Necula (auth.), Alan Mycroft, Andreas Zeller (eds.)


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