diff options
Diffstat (limited to 'src/codegen/llvm.rs')
| -rw-r--r-- | src/codegen/llvm.rs | 76 |
1 files changed, 48 insertions, 28 deletions
diff --git a/src/codegen/llvm.rs b/src/codegen/llvm.rs index 1f4a457cd81b..5b5db90a1ad8 100644 --- a/src/codegen/llvm.rs +++ b/src/codegen/llvm.rs @@ -7,12 +7,13 @@ use inkwell::builder::Builder; pub use inkwell::context::Context; use inkwell::module::Module; use inkwell::support::LLVMString; -use inkwell::types::FunctionType; +use inkwell::types::{BasicType, BasicTypeEnum, FunctionType, IntType}; use inkwell::values::{AnyValueEnum, BasicValueEnum, FunctionValue}; use inkwell::IntPredicate; use thiserror::Error; -use crate::ast::{BinaryOperator, Binding, Decl, Expr, Fun, Ident, Literal, UnaryOperator}; +use crate::ast::hir::{Binding, Decl, Expr}; +use crate::ast::{BinaryOperator, Ident, Literal, Type, UnaryOperator}; use crate::common::env::Env; #[derive(Debug, PartialEq, Eq, Error)] @@ -36,7 +37,7 @@ pub struct Codegen<'ctx, 'ast> { context: &'ctx Context, pub module: Module<'ctx>, builder: Builder<'ctx>, - env: Env<'ast, AnyValueEnum<'ctx>>, + env: Env<&'ast Ident<'ast>, AnyValueEnum<'ctx>>, function_stack: Vec<FunctionValue<'ctx>>, identifier_counter: u32, } @@ -77,18 +78,23 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { .append_basic_block(*self.function_stack.last().unwrap(), name) } - pub fn codegen_expr(&mut self, expr: &'ast Expr<'ast>) -> Result<AnyValueEnum<'ctx>> { + pub fn codegen_expr(&mut self, expr: &'ast Expr<'ast, Type>) -> Result<AnyValueEnum<'ctx>> { match expr { - Expr::Ident(id) => self + Expr::Ident(id, _) => self .env .resolve(id) .cloned() .ok_or_else(|| Error::UndefinedVariable(id.to_owned())), - Expr::Literal(Literal::Int(i)) => { - let ty = self.context.i64_type(); - Ok(AnyValueEnum::IntValue(ty.const_int(*i, false))) + Expr::Literal(lit, ty) => { + let ty = self.codegen_int_type(ty); + match lit { + Literal::Int(i) => Ok(AnyValueEnum::IntValue(ty.const_int(*i, false))), + Literal::Bool(b) => Ok(AnyValueEnum::IntValue( + ty.const_int(if *b { 1 } else { 0 }, false), + )), + } } - Expr::UnaryOp { op, rhs } => { + Expr::UnaryOp { op, rhs, .. } => { let rhs = self.codegen_expr(rhs)?; match op { UnaryOperator::Not => unimplemented!(), @@ -97,7 +103,7 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { )), } } - Expr::BinaryOp { lhs, op, rhs } => { + Expr::BinaryOp { lhs, op, rhs, .. } => { let lhs = self.codegen_expr(lhs)?; let rhs = self.codegen_expr(rhs)?; match op { @@ -135,7 +141,7 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { BinaryOperator::Neq => todo!(), } } - Expr::Let { bindings, body } => { + Expr::Let { bindings, body, .. } => { self.env.push(); for Binding { ident, body, .. } in bindings { let val = self.codegen_expr(body)?; @@ -149,6 +155,7 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { condition, then, else_, + type_, } => { let then_block = self.append_basic_block("then"); let else_block = self.append_basic_block("else"); @@ -168,15 +175,15 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { self.builder.build_unconditional_branch(join_block); self.builder.position_at_end(join_block); - let phi = self.builder.build_phi(self.context.i64_type(), "join"); + let phi = self.builder.build_phi(self.codegen_type(type_), "join"); phi.add_incoming(&[ (&BasicValueEnum::try_from(then_res).unwrap(), then_block), (&BasicValueEnum::try_from(else_res).unwrap(), else_block), ]); Ok(phi.as_basic_value().into()) } - Expr::Call { fun, args } => { - if let Expr::Ident(id) = &**fun { + Expr::Call { fun, args, .. } => { + if let Expr::Ident(id, _) = &**fun { let function = self .module .get_function(id.into()) @@ -197,8 +204,7 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { todo!() } } - Expr::Fun(fun) => { - let Fun { args, body } = &**fun; + Expr::Fun { args, body, .. } => { let fname = self.fresh_ident("f"); let cur_block = self.builder.get_insert_block().unwrap(); let env = self.env.save(); // TODO: closures @@ -207,29 +213,27 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { self.env.restore(env); Ok(function.into()) } - Expr::Ascription { expr, .. } => self.codegen_expr(expr), } } pub fn codegen_function( &mut self, name: &str, - args: &'ast [Ident<'ast>], - body: &'ast Expr<'ast>, + args: &'ast [(Ident<'ast>, Type)], + body: &'ast Expr<'ast, Type>, ) -> Result<FunctionValue<'ctx>> { - let i64_type = self.context.i64_type(); self.new_function( name, - i64_type.fn_type( + self.codegen_type(body.type_()).fn_type( args.iter() - .map(|_| i64_type.into()) + .map(|(_, at)| self.codegen_type(at)) .collect::<Vec<_>>() .as_slice(), false, ), ); self.env.push(); - for (i, arg) in args.iter().enumerate() { + for (i, (arg, _)) in args.iter().enumerate() { self.env.set( arg, self.cur_function().get_nth_param(i as u32).unwrap().into(), @@ -240,11 +244,10 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { Ok(self.finish_function(&res)) } - pub fn codegen_decl(&mut self, decl: &'ast Decl<'ast>) -> Result<()> { + pub fn codegen_decl(&mut self, decl: &'ast Decl<'ast, Type>) -> Result<()> { match decl { Decl::Fun { - name, - body: Fun { args, body }, + name, args, body, .. } => { self.codegen_function(name.into(), args, body)?; Ok(()) @@ -252,13 +255,28 @@ impl<'ctx, 'ast> Codegen<'ctx, 'ast> { } } - pub fn codegen_main(&mut self, expr: &'ast Expr<'ast>) -> Result<()> { + pub fn codegen_main(&mut self, expr: &'ast Expr<'ast, Type>) -> Result<()> { self.new_function("main", self.context.i64_type().fn_type(&[], false)); let res = self.codegen_expr(expr)?.try_into().unwrap(); - self.finish_function(&res); + if *expr.type_() != Type::Int { + self.builder + .build_return(Some(&self.context.i64_type().const_int(0, false))); + } else { + self.finish_function(&res); + } Ok(()) } + fn codegen_type(&self, type_: &'ast Type) -> BasicTypeEnum<'ctx> { + // TODO + self.context.i64_type().into() + } + + fn codegen_int_type(&self, type_: &'ast Type) -> IntType<'ctx> { + // TODO + self.context.i64_type() + } + pub fn print_to_file<P>(&self, path: P) -> Result<()> where P: AsRef<Path>, @@ -299,6 +317,8 @@ mod tests { fn jit_eval<T>(expr: &str) -> anyhow::Result<T> { let expr = crate::parser::expr(expr).unwrap().1; + let expr = crate::tc::typecheck_expr(expr).unwrap(); + let context = Context::create(); let mut codegen = Codegen::new(&context, "test"); let execution_engine = codegen |