This repository contains the source code for SAYAC Compiler developed using LLVM 12. The SAYAC processor is a Simple Architecture Yet Ample Circuitry. This is a RISCV-like processor developed at University of Tehran.
A detailed documenation regarding SAYAC LLVM backend can be found at https://github.com/ak821/SAYAC-Compiler/blob/main-sayac/docs/SAYAC_LLVM_Compiler.pdf
LLVM project https://llvm.org/docs/GettingStarted.html.
LLVM Backend https://llvm.org/docs/WritingAnLLVMBackend.html
The following steps can be followed to setup this project on a Linux system
- Clone the repo and change directory
git clone https://github.com/ak821/SAYAC-Compiler.git
cd SAYAC-Compiler
git checkout main-sayac
- Create a build directory
mkdir build
cd build
- Generate build system files
cmake -G "Ninja" -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_TARGETS_TO_BUILD="RISCV" -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="SAYAC" -DCMAKE_BUILD_TYPE="Debug" -DLLVM_ENABLE_ASSERTIONS=On ../llvm
ninja
Setting -DCMAKE_BUILD_TYPE="Release" can lead to faster build. For more details and customizing the build process check https://llvm.org/docs/GettingStarted.html#getting-the-source-code-and-building-llvm
- Install the binaries
ninja install
Move into SAYAC-Compiler directory and create a test.c file.
- C code to LLVM IR
./build/bin/clang -emit-llvm -target sayac -o test.bc -c test.c
The previous command created a test.bc file with the LLVM IR, but thats not very human-readable. To convert it in a human readable format, the following command can be executed which generates test.ll file
./build/bin/llvm-dis test.bc
cat test.ll
- LLVM IR to SAYAC assembly
.build/bin/llc test.bc
cat test.s
The test.s file generated constains the code in SAYAC assembly langugage.
NOTE: C standard libraries not supported yet. So do not use #include in test.c file