❗This is still a WIP project.
This is a tiny C compiler built with Antlr4 and LLVM, as a simple exercise on compiler design.
DevContainer is configured for build dependencies. With VSCode Remote-Container, you can use it easily. Or you can pull the docker image from locietta/loia-dev-base:antlr4.
We basically base our work on ANTLR4 and LLVM13, while also use graphviz and fmt.
gcc >= 11 or clang >= 13 is needed, for we use a few C++20 features. Lower version of compilers might also work, but we didn't test them.
We use CMake to build.
cmake --build build --config Debug
cmake --build build --config Release
$ ./tinycc -h
OVERVIEW: Simple compiler for C
USAGE: tinycc [options] <input file>
OPTIONS:
Color Options:
--color - Use colors in output (default=autodetect)
General options:
-A - Alias for --emit-ast
-C - Alias for --emit-cfg
-O=<int> - Choose optimization level
--debug-sexpr - Output S-expression of generated AST to stdout
--emit-ast - Emit tree graph for all ASTs
--emit-cfg - Emit Control Flow Graphs for all functions
--gcc-lib-version=<version> - Specify the version gcc, used for linker to link the gcc lib. Default to 12.1.0
-o=<filename> - Specify output filename
--pic-dir=<dirname> - Specify output directory of pics, default to `output`
Generic Options:
--help - Display available options (--help-hidden for more)
--help-list - Display list of available options (--help-list-hidden for more)
--version - Display the version of this program
For example, tinycc a.c -O=1 -a -C will produce optimized code including a.ll(LLVM IR code) and a.o(x86 machine code), and will generate AST graphs and control flow graphs under output folder.