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quick and dirty demo of python parsing and llvm output

This commit is contained in:
Sebastien Bourdeauducq 2020-03-23 16:12:52 +08:00
commit 21fc3cf3e8
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9
Cargo.toml Normal file
View File

@ -0,0 +1,9 @@
[package]
name = "nac3"
version = "0.1.0"
authors = ["Sebastien Bourdeauducq <sb@m-labs.hk>"]
edition = "2018"
[dependencies]
inkwell = { git = "https://github.com/TheDan64/inkwell", branch = "llvm8-0" }
rustpython-parser = { git = "https://github.com/RustPython/RustPython", branch = "master" }

79
src/main.rs Normal file
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@ -0,0 +1,79 @@
extern crate inkwell;
extern crate rustpython_parser;
use rustpython_parser::parser;
use inkwell::OptimizationLevel;
use inkwell::builder::Builder;
use inkwell::context::Context;
use inkwell::module::Module;
use inkwell::targets::*;
use inkwell::passes::PassManager;
use std::error::Error;
use std::path::Path;
struct CodeGen<'ctx> {
context: &'ctx Context,
module: Module<'ctx>,
builder: Builder<'ctx>
}
impl<'ctx> CodeGen<'ctx> {
fn compile_sum(&self) {
let i64_type = self.context.i64_type();
let fn_type = i64_type.fn_type(&[i64_type.into(), i64_type.into(), i64_type.into()], false);
let function = self.module.add_function("sum", fn_type, None);
let basic_block = self.context.append_basic_block(function, "entry");
self.builder.position_at_end(basic_block);
let x = function.get_nth_param(0).unwrap().into_int_value();
let y = function.get_nth_param(1).unwrap().into_int_value();
let z = function.get_nth_param(2).unwrap().into_int_value();
let sum = self.builder.build_int_add(x, y, "sum");
let sum = self.builder.build_int_add(sum, z, "sum");
self.builder.build_return(Some(&sum));
Target::initialize_all(&InitializationConfig::default());
//let triple = TargetMachine::get_default_triple();
let triple = TargetTriple::create("riscv32-none-linux-gnu");
let target = Target::from_triple(&triple)
.expect("couldn't create target from target triple");
let target_machine = target
.create_target_machine(
&triple,
"",
"",
OptimizationLevel::Default,
RelocMode::Default,
CodeModel::Default,
)
.expect("couldn't create target machine");
target_machine
.write_to_file(&self.module, FileType::Object, Path::new("test.o"))
.expect("couldn't write module to file");
}
}
fn main() -> Result<(), Box<dyn Error>> {
let context = Context::create();
let module = context.create_module("sum");
let codegen = CodeGen {
context: &context,
module,
builder: context.create_builder(),
};
codegen.compile_sum();
let x = parser::parse_program("def foo(x: int): print('abc')");
println!("{:?}", x);
Ok(())
}