This repo contains 2 LLVM passes:

1- Debloat: provides several options to perform debloating

2- Profiler: analysis pass that generates several statistics about number of methods, calls, instructions, basic blocks, etc..

Building steps:

The following steps use LLVM 12.0. You can build your own LLVM pass or download a precompiled version

1- clone the repo

2- mkdir build_debloat && cd build_debloat

3- Run CMake with the path to the LLVM source:

cmake -DLLVM_DIR=<path-to-llvm-installation/build>/lib/cmake/llvm/ ../LLVM_Debloating_Passes

4- make

Usage:

1- Debloating pass:

<path-to-llvm>/bin/opt -load \
build_debloat/Debloat/libLLVMDebloat.so -debloat \
-globals=gbls.txt\
-plocals=primitiveLocals.txt \
-clocals=customizedLocals.txt\
-ptrStructlocals=ptrToStructLocals.txt \
-ptrToPrimLocals=ptrToPrimitiveLocals.txt \
-stringVars=stringVars.txt  \
-bbfile=bbs.txt -appName=${app} ${app}_orig.bc -verify -o ${app}_cc.bc

2- Profiling pass:

<path-to-llvm>/bin/opt -load \
build_debloat/Profiler/libLLVMPprofiler.so \
-Pprofiler -size=${size_orig} -o /dev/null <.bc>