From cTuning.org
Common page for GSOC09 and other developments in summer 2009: function cloning, fine-grain optimizations, program instrumentation:
Fine-grain optimization project
Yuanjie Huang
Plugins
Plugins developed for fine-grain tuning are documented here. These plugins are developed to work with ICI-2.0 interface.
adapt-passes
Description
The function of this plugin depends on ICI_ADAPT_CONTROL environmental variable, which can be either set to 1 to record passes for each function into XML files or set to 2 to reuse passes from XML files to substitute passes in GCC compiling process.
Required Events and parameters
- pass_execution: this event is triggered when a GCC pass is about to run.
- all_passes_manager
- avoid_gate
State This plugin now can record and reuse optimization passes without problem, with the following issues to solve:
- The compilation won't fall to default compilation process when no corresponding XML can be found.
- The plugin cannot handle interprocedual passes well.