Interactive Compilation Interface

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The Interactive Compilation Interface (ICI) is a plugin system with a high-level compiler-independent and low-level compiler-dependent API to transform current black-box compilers into collaborative modular interactive toolsets. It was developed by Grigori Fursin during MILEPOST project.[1][2] The ICI framework acts as a "middleware" interface between the compiler and the user-definable plugins. It opens up and reuses the production-quality compiler infrastructure to enable program analysis and instrumentation, fine-grain program optimizations, simple prototyping of new development and research ideas while avoiding building new compilation tools from scratch. For example, it is used in MILEPOST GCC to automate compiler and architecture design and program optimizations based on statistical analysis and machine learning, and predict profitable optimization to improve program execution time, code size and compilation time.


ICI is now available in mainline GCC since version 4.5[3]


  • ICI 2.0 - released for GCC in May, 2009.
  • ICI 1.0 - released for GCC in 2008.
  • ICI beta - developed for GCC in 2006–2008.
  • ICI beta - developed for Open64/PathScale compilers in 2004–2006.


  1. ^ Grigori Fursin. Collective Tuning Initiative: automating and accelerating development and optimization of computing systems. Proceedings of the GCC Summit'09, Montreal, Canada, June 2009 (link)
  2. ^ Grigori Fursin, Yuriy Kashnikov, Abdul Wahid Memon, Zbigniew Chamski, Olivier Temam, Mircea Namolaru, Elad Yom-Tov, Bilha Mendelson, Ayal Zaks, Eric Courtois, Francois Bodin, Phil Barnard, Elton Ashton, Edwin Bonilla, John Thomson, Chris Williams, Michael O'Boyle. Milepost gcc: Machine learning enabled self-tuning compiler International journal of parallel programming, Volume 39, Issue 3, pp. 296-327, June 2011 (link)
  3. ^ "GCC plugins". Retrieved 2017-05-30.