This project is mainly used to save some practices of writing llvm pass, which is helpful for people who are unfamiliar with LLVM.

Introduce some information about several directories.

pass_example: there are some llvm pass example, like iterate BasicBlocks
test_program: there are some C program, which is used to

Notice: More information you can see in dir's doc file

1. You should compile the LLVM for your platform

2. Select a LLVM Pass example, and copy it in LLVM

   cp -R pass_example/${LLVM_PASS} ${LLVM_HOME}/lib/Transforms cd ${LLVM_BUILD} make

3. Test the LLVM Pass

   clang -emit-llvm -S -o ${TEST_FILE}.ll test_program/${TEST_FILE}.c opt -load ${LLVM_BUILD}/lib/LLVM${LLVM_PASS}.so -${LLVM_PASS} ${TEST_FILE}.ll

Notice:
LLVM_HOME: llvm's home dir
LLVM_BUILD: the dir which is uesd to build llvm
LLVM_PASS: the llvm pass which you want to test
TEST_FILE: test C file