Compiler Optimization

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Peter Shih edited this page Jul 9, 2017 · 2 revisions

PGO: Profile guided optimization
Usage
- cd gcc-7/mcts
- PROFILING=1 make
- Run the program for a while
  - It generates several *.gcda files along the .o files
  - Make sure the program is terminated gracefully, so the .gcda files can be flushed.
- make clean && make
  - Use the generated profile for further optimization