# MidoutMove Intermediate Dynamic-dispatch OUT; the name is obtained by applyingthe infamous [middle-out](http://www.piedpiper.com) algorithm on the word`middle-out`.## Usage1. Include `midout.h` in the source code and mark removable regions with`MIDOUT_BEGIN` and `MIDOUT_END`.2. Compile the whole project with macro `MIDOUT_PROFILING` defined.3. Execute the program on possible inputs to gather trace information on used blocks. The trace would be written to `midout_trace.<pid>` by default, and this output name can be changed via the environment variable `MIDOUT_OUTPUT`.4. Generate midout header file by `./gen_header.py`.5. Recompile the project and ensure that the header generated in the previous step is included before `midout.h`. Remember to enable LTO.6. Now all the blocks marked in step 1 that are not executed in step 3 have been removed from the final executable; if any of them is indeed used at runtime, a trap would be triggered.See `run.sh` for a concrete example.