This repository contains an extension to the LLVM Loop Fusion pass which attempts to move any intervening code between the loops either above the first loop or below the second loop.
Build the pass as follows:
mkdir build
cd build
cmake ..
make
To run the legacy loop fusion pass on a test and print debugs, make a test as follows:
cd tests
make clean
make legacy-debug test=<test_name>
<test_name> can be something like normal-test0, corresponding to normal-test0.cpp. Note the omission of .cpp.
In the tests dir, run ./viz.sh <bitcode> to vizualize the CFG for the test results. <bitcode> can be something like no-opt or fused, corresponding to the outputs of the Makefile called no-opt.bc or fused.bc. Note the omission of .bc.