Research and actions
Collaborative research activites
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Practical iterative and machine-learning compilation in a production compiler.
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Contacts: Grigori Fursin, INRIA Saclay; Bilha Mendelson, IBM Haifa.
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See GCC-ICI.
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Extend the SSA-based internal representation to support non-scalar data-flow.
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Contact: Albert Cohen, INRIA Saclay.
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Proposals: array SSA, gated SSA, data-flow streams, synchronous clocks, polyhedral model.
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Compiler support for Transactional Memory (TM).
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Support optimistic concurrency for parallel programming in GCC.
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Wiki page for design and implementation discussions.
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Draft proposal and slides.
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Relevant papers on compiler optimizations at PLDI'06 and CGO'07, and on integration with OpenMP in GCC at PACT'07.
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Contacts: Osman Unsal, UPC/BSC; Avi Mendelson, Intel Haifa; Albert Cohen, INRIA Saclay.
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Support whole-program and link-time optimization on a high-level representation.
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Contacts: Ayal Zaks, IBM Haifa; Paul Kelly, Imperial College.
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Design and implement a portable performance model for the multi-core era.
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Contacts: Basilio Fraguela, U. A Coruña; Mike O'Boyle, U. Edinburgh.
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Instruction set customization and online configuration of the machine description.
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Contacts: Phil Barnard, ARC; Mike O'Boyle, U. Edinburgh.
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Metaprogramming support for active libraries.
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Contact: Paul Kelly, Imperial College.
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A.k.a. library generators, i.e., ATLAS, FFTW, SPIRAL, etc.
Development and transfer actions
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GCC as a common research platform: animation and training.
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Upcoming SSA seminar, April 2009. See the attached presentation: Fabrice Rastello.
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1st GREPS workshop (with PACT'07): Ayal Zaks, Albert Cohen.
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2nd GREPS workshop (with HiPEAC'09): Paul Kelly, Imperial College; Sebastian Pop, AMD Austin.
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HiPEAC GCC Tutorials (2006/05, 2007/01).
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ACACES summer school (Ayal Zaks 2005/07, Albert Cohen 2006/07); material on the GCC Wiki.
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Contact: Albert Cohen, INRIA Saclay.
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Build an API to plug research tools into GCC.
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Contact: Grigori Fursin, INRIA Saclay.
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GIMPLE type system: defer lowering of abstract data structures.
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Contact: Paul Kelly, Imperial College.
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Support virtual vectors (Fortran90, SIMD), layout optimizations, whole-program and link-time optimization.
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See GCC mailing list (GIMPLE types, LTO, Kenneth Zadeck).
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Single-source, multi-ISA compilation.
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Contact: Albert Cohen, Xavier Martorell, Ayal Zaks, Bilha Mendelson.
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Ask for Cupertino Miranda's single-source cell GCC patch.
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See also Intel's EXO-CHI (based on OpenMP).
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Improve GCC baseline performance: some priorities in alias analysis, competitive back-end (VLIW-friendly).
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Contact: Harm Munk, NXP Eindhoven.
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Copyright and GPL issues.
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Most important: copyright transfer to the Free Software Foundation.
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Contact: Harm Munk, NXP Eindhoven.
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Interactions with the greater GCC community.
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GCC Summit.
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Research, development, coordination and training in the US, Canada, Russia, India...
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Contact: Ayal Zaks, IBM Haifa.
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Contributions to the HiPEAC² roadmap. A roadmap HOWTO and a roadmap draft contribution page are available.
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Cluster delegate: Albert Cohen, INRIA Saclay.
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Use GCC as a powerful dissemination vehicle of HiPEAC compiler research.
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Contact: everybody! Please advocate, contribute and publish, for the benefits of all.
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