Burckhardt, Sebastian; Musuvathi, Madanlal; Singh, VasuIST Austria
The problem of locally transforming or translating programs without altering their semantics is central to the construction of correct compilers. For concurrent shared-memory programs this task is challenging because (1) concurrent threads can observe transformations that would be undetectable in a sequential program, and (2) contemporary multiprocessors commonly use relaxed memory models that complicate the reasoning. In this paper, we present a novel proof methodology for verifying that a local program transformation is sound with respect to a specific hardware memory model, in the sense that it is not observable in any context. The methodology is based on a structural induction and relies on a novel compositional denotational semantics for relaxed memory models that formalizes (1) the behaviors of program fragments as a set of traces, and (2) the effect of memory model relaxations as local trace rewrite operations. To apply this methodology in practice, we implemented a semi- automated tool called Traver and used it to verify/falsify several compiler transformations for a number of different hardware memory models.
104 - 123
CC: Compiler Construction
2010-03-20 – 2010-03-28
Burckhardt S, Musuvathi M, Singh V. Verifying local transformations on relaxed memory models. In: Gupta R, ed. Vol 6011. Springer; 2010:104-123. doi:10.1007/978-3-642-11970-5_7
Burckhardt, S., Musuvathi, M., & Singh, V. (2010). Verifying local transformations on relaxed memory models. In R. Gupta (Ed.) (Vol. 6011, pp. 104–123). Presented at the CC: Compiler Construction, Pahos, Cyprus: Springer. https://doi.org/10.1007/978-3-642-11970-5_7
Burckhardt, Sebastian, Madanlal Musuvathi, and Vasu Singh. “Verifying Local Transformations on Relaxed Memory Models.” edited by Rajiv Gupta, 6011:104–23. Springer, 2010. https://doi.org/10.1007/978-3-642-11970-5_7.
S. Burckhardt, M. Musuvathi, and V. Singh, “Verifying local transformations on relaxed memory models,” presented at the CC: Compiler Construction, Pahos, Cyprus, 2010, vol. 6011, pp. 104–123.
Burckhardt S, Musuvathi M, Singh V. 2010. Verifying local transformations on relaxed memory models. CC: Compiler Construction, LNCS, vol. 6011. 104–123.
Burckhardt, Sebastian, et al. Verifying Local Transformations on Relaxed Memory Models. Edited by Rajiv Gupta, vol. 6011, Springer, 2010, pp. 104–23, doi:10.1007/978-3-642-11970-5_7.