473 lines
16 KiB
Rust
473 lines
16 KiB
Rust
#![deny(
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future_incompatible,
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let_underscore,
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nonstandard_style,
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rust_2024_compatibility,
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clippy::all
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)]
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#![warn(clippy::pedantic)]
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#![allow(clippy::too_many_lines, clippy::wildcard_imports)]
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use clap::Parser;
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use inkwell::context::Context;
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use inkwell::{
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memory_buffer::MemoryBuffer, passes::PassBuilderOptions, support::is_multithreaded, targets::*,
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OptimizationLevel,
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};
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use nac3core::{
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codegen::{
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concrete_type::ConcreteTypeStore, irrt::load_irrt, CodeGenLLVMOptions,
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CodeGenTargetMachineOptions, CodeGenTask, DefaultCodeGenerator, WithCall, WorkerRegistry,
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},
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symbol_resolver::SymbolResolver,
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toplevel::{
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composer::{ComposerConfig, TopLevelComposer},
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helper::parse_parameter_default_value,
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type_annotation::*,
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TopLevelDef,
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},
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typecheck::{
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type_inferencer::PrimitiveStore,
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typedef::{FunSignature, Type, Unifier, VarMap},
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},
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};
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use nac3parser::{
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ast::{Constant, Expr, ExprKind, StmtKind, StrRef},
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parser,
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};
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use parking_lot::{Mutex, RwLock};
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use std::collections::HashSet;
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use std::num::NonZeroUsize;
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use std::{collections::HashMap, fs, path::Path, sync::Arc};
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mod basic_symbol_resolver;
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use basic_symbol_resolver::*;
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/// Command-line argument parser definition.
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#[derive(Parser)]
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#[command(author, version, about, long_about = None)]
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struct CommandLineArgs {
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/// The name of the input file.
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file_name: String,
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/// The number of threads allocated to processing the source file. If 0 is passed to this
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/// parameter, all available threads will be used for compilation.
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#[arg(short = 'T', default_value_t = 1)]
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threads: u32,
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/// The level to optimize the LLVM IR.
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#[arg(short = 'O', default_value_t = 2, value_parser = clap::value_parser!(u32).range(0..=3))]
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opt_level: u32,
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/// Whether to emit LLVM IR at the end of every module.
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///
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/// If multithreaded compilation is also enabled, each thread will emit its own module.
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#[arg(long, default_value_t = false)]
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emit_llvm: bool,
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/// The target triple to compile for.
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#[arg(long)]
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triple: Option<String>,
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/// The target CPU to compile for.
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#[arg(long)]
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mcpu: Option<String>,
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/// Additional target features to enable/disable, specified using the `+`/`-` prefixes.
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#[arg(long)]
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target_features: Option<String>,
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}
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fn handle_typevar_definition(
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var: &Expr,
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resolver: &(dyn SymbolResolver + Send + Sync),
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def_list: &[Arc<RwLock<TopLevelDef>>],
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unifier: &mut Unifier,
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primitives: &PrimitiveStore,
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) -> Result<Type, HashSet<String>> {
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let ExprKind::Call { func, args, .. } = &var.node else {
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return Err(HashSet::from([format!(
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"expression {var:?} cannot be handled as a generic parameter in global scope"
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)]));
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};
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match &func.node {
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ExprKind::Name { id, .. } if id == &"TypeVar".into() => {
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let ExprKind::Constant { value: Constant::Str(ty_name), .. } = &args[0].node else {
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return Err(HashSet::from([format!(
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"Expected string constant for first parameter of `TypeVar`, got {:?}",
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&args[0].node
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)]));
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};
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let generic_name: StrRef = ty_name.to_string().into();
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let constraints = args
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.iter()
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.skip(1)
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.map(|x| -> Result<Type, HashSet<String>> {
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let ty = parse_ast_to_type_annotation_kinds(
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resolver,
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def_list,
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unifier,
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primitives,
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x,
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HashMap::new(),
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)?;
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get_type_from_type_annotation_kinds(
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def_list, unifier, primitives, &ty, &mut None,
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)
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})
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.collect::<Result<Vec<_>, _>>()?;
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let loc = func.location;
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if constraints.len() == 1 {
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return Err(HashSet::from([format!(
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"A single constraint is not allowed (at {loc})"
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)]));
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}
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Ok(unifier.get_fresh_var_with_range(&constraints, Some(generic_name), Some(loc)).ty)
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}
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ExprKind::Name { id, .. } if id == &"ConstGeneric".into() => {
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if args.len() != 2 {
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return Err(HashSet::from([format!(
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"Expected 2 arguments for `ConstGeneric`, got {}",
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args.len()
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)]));
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}
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let ExprKind::Constant { value: Constant::Str(ty_name), .. } = &args[0].node else {
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return Err(HashSet::from([format!(
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"Expected string constant for first parameter of `ConstGeneric`, got {:?}",
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&args[0].node
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)]));
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};
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let generic_name: StrRef = ty_name.to_string().into();
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let ty = parse_ast_to_type_annotation_kinds(
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resolver,
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def_list,
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unifier,
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primitives,
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&args[1],
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HashMap::new(),
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)?;
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let constraint =
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get_type_from_type_annotation_kinds(def_list, unifier, primitives, &ty, &mut None)?;
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let loc = func.location;
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Ok(unifier.get_fresh_const_generic_var(constraint, Some(generic_name), Some(loc)).ty)
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}
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_ => Err(HashSet::from([format!(
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"expression {var:?} cannot be handled as a generic parameter in global scope"
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)])),
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}
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}
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fn handle_assignment_pattern(
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targets: &[Expr],
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value: &Expr,
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resolver: &(dyn SymbolResolver + Send + Sync),
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internal_resolver: &ResolverInternal,
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def_list: &[Arc<RwLock<TopLevelDef>>],
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unifier: &mut Unifier,
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primitives: &PrimitiveStore,
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) -> Result<(), String> {
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if targets.len() == 1 {
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match &targets[0].node {
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ExprKind::Name { id, .. } => {
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if let Ok(var) =
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handle_typevar_definition(value, resolver, def_list, unifier, primitives)
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{
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internal_resolver.add_id_type(*id, var);
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Ok(())
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} else if let Ok(val) = parse_parameter_default_value(value, resolver) {
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internal_resolver.add_module_global(*id, val);
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Ok(())
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} else {
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Err(format!("fails to evaluate this expression `{:?}` as a constant or generic parameter at {}",
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targets[0].node,
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targets[0].location,
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))
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}
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}
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ExprKind::List { elts, .. } | ExprKind::Tuple { elts, .. } => {
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handle_assignment_pattern(
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elts,
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value,
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resolver,
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internal_resolver,
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def_list,
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unifier,
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primitives,
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)?;
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Ok(())
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}
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_ => Err(format!(
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"assignment to {:?} is not supported at {}",
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targets[0], targets[0].location
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)),
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}
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} else {
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match &value.node {
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ExprKind::List { elts, .. } | ExprKind::Tuple { elts, .. } => {
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if elts.len() == targets.len() {
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for (tar, val) in targets.iter().zip(elts) {
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handle_assignment_pattern(
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std::slice::from_ref(tar),
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val,
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resolver,
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internal_resolver,
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def_list,
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unifier,
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primitives,
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)?;
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}
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Ok(())
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} else {
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Err(format!(
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"number of elements to unpack does not match (expect {}, found {}) at {}",
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targets.len(),
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elts.len(),
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value.location
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))
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}
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}
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_ => Err(format!("unpack of this expression is not supported at {}", value.location)),
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}
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}
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}
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fn main() {
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let cli = CommandLineArgs::parse();
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let CommandLineArgs { file_name, threads, opt_level, emit_llvm, triple, mcpu, target_features } =
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cli;
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Target::initialize_all(&InitializationConfig::default());
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let host_target_machine = CodeGenTargetMachineOptions::from_host();
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let triple = triple.unwrap_or(host_target_machine.triple.clone());
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let mcpu = mcpu
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.map(|arg| if arg == "native" { host_target_machine.cpu.clone() } else { arg })
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.unwrap_or_default();
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let target_features = target_features.unwrap_or_default();
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let threads = if is_multithreaded() {
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if threads == 0 {
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std::thread::available_parallelism().map(NonZeroUsize::get).unwrap_or(1usize)
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} else {
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threads as usize
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}
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} else {
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if threads != 1 {
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println!("Warning: Number of threads specified in command-line but multithreading is disabled in LLVM at build time! Defaulting to single-threaded compilation");
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}
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1
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};
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let opt_level = match opt_level {
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0 => OptimizationLevel::None,
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1 => OptimizationLevel::Less,
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2 => OptimizationLevel::Default,
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// The default behavior for -O<n> where n>3 defaults to O3 for both Clang and GCC
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_ => OptimizationLevel::Aggressive,
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};
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let target_machine_options = CodeGenTargetMachineOptions {
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triple,
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cpu: mcpu,
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features: target_features,
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reloc_mode: RelocMode::PIC,
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..host_target_machine
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};
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let size_t = Context::create()
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.ptr_sized_int_type(
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&target_machine_options
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.create_target_machine(opt_level)
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.map(|tm| tm.get_target_data())
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.unwrap(),
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None,
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)
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.get_bit_width();
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let program = match fs::read_to_string(file_name.clone()) {
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Ok(program) => program,
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Err(err) => {
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println!("Cannot open input file: {err}");
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return;
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}
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};
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let primitive: PrimitiveStore = TopLevelComposer::make_primitives(size_t).0;
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let (mut composer, builtins_def, builtins_ty) =
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TopLevelComposer::new(vec![], vec![], ComposerConfig::default(), size_t);
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let internal_resolver: Arc<ResolverInternal> = ResolverInternal {
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id_to_type: builtins_ty.into(),
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id_to_def: builtins_def.into(),
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class_names: Mutex::default(),
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module_globals: Mutex::default(),
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str_store: Mutex::default(),
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}
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.into();
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let resolver =
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Arc::new(Resolver(internal_resolver.clone())) as Arc<dyn SymbolResolver + Send + Sync>;
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let parser_result = parser::parse_program(&program, file_name.into()).unwrap();
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for stmt in parser_result {
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match &stmt.node {
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StmtKind::Assign { targets, value, .. } => {
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let def_list = composer.extract_def_list();
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let unifier = &mut composer.unifier;
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let primitives = &composer.primitives_ty;
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if let Err(err) = handle_assignment_pattern(
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targets,
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value,
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resolver.as_ref(),
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internal_resolver.as_ref(),
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&def_list,
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unifier,
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primitives,
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) {
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eprintln!("{err}");
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return;
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}
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}
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// allow (and ignore) "from __future__ import annotations"
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StmtKind::ImportFrom { module, names, .. }
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if module == &Some("__future__".into())
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&& names.len() == 1
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&& names[0].name == "annotations".into() => {}
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_ => {
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let (name, def_id, ty) = composer
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.register_top_level(stmt, Some(resolver.clone()), "__main__", true)
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.unwrap();
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internal_resolver.add_id_def(name, def_id);
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if let Some(ty) = ty {
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internal_resolver.add_id_type(name, ty);
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}
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}
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}
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}
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let signature = FunSignature { args: vec![], ret: primitive.int32, vars: VarMap::new() };
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let mut store = ConcreteTypeStore::new();
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let mut cache = HashMap::new();
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let signature = store.from_signature(&mut composer.unifier, &primitive, &signature, &mut cache);
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let signature = store.add_cty(signature);
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if let Err(errors) = composer.start_analysis(true) {
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let error_count = errors.len();
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eprintln!("{error_count} error(s) occurred during top level analysis.");
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for (error_i, error) in errors.iter().enumerate() {
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let error_num = error_i + 1;
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eprintln!("=========== ERROR {error_num}/{error_count} ============");
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eprintln!("{error}");
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}
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eprintln!("==================================");
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panic!("top level analysis failed");
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}
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let top_level = Arc::new(composer.make_top_level_context());
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let instance = {
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let defs = top_level.definitions.read();
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let mut instance = defs[resolver
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.get_identifier_def("run".into())
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.unwrap_or_else(|_| panic!("cannot find run() entry point"))
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.0]
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.write();
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let TopLevelDef::Function { instance_to_stmt, instance_to_symbol, .. } = &mut *instance
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else {
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unreachable!()
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};
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instance_to_symbol.insert(String::new(), "run".to_string());
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instance_to_stmt[""].clone()
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};
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let llvm_options = CodeGenLLVMOptions { opt_level, target: target_machine_options };
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let task = CodeGenTask {
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subst: Vec::default(),
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symbol_name: "run".to_string(),
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body: instance.body,
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signature,
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resolver,
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store,
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unifier_index: instance.unifier_id,
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calls: instance.calls,
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id: 0,
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};
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let membuffers: Arc<Mutex<Vec<Vec<u8>>>> = Arc::default();
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let membuffer = membuffers.clone();
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let f = Arc::new(WithCall::new(Box::new(move |module| {
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let buffer = module.write_bitcode_to_memory();
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let buffer = buffer.as_slice().into();
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membuffer.lock().push(buffer);
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})));
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let threads = (0..threads)
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.map(|i| Box::new(DefaultCodeGenerator::new(format!("module{i}"), size_t)))
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.collect();
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let (registry, handles) = WorkerRegistry::create_workers(threads, top_level, &llvm_options, &f);
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registry.add_task(task);
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registry.wait_tasks_complete(handles);
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let buffers = membuffers.lock();
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let context = inkwell::context::Context::create();
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let main = context
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.create_module_from_ir(MemoryBuffer::create_from_memory_range(&buffers[0], "main"))
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.unwrap();
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if emit_llvm {
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main.write_bitcode_to_path(Path::new("main.bc"));
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}
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for (idx, buffer) in buffers.iter().skip(1).enumerate() {
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let other = context
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.create_module_from_ir(MemoryBuffer::create_from_memory_range(buffer, "main"))
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.unwrap();
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if emit_llvm {
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other.write_bitcode_to_path(Path::new(&format!("module{idx}.bc")));
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}
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main.link_in_module(other).unwrap();
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}
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let irrt = load_irrt(&context);
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if emit_llvm {
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irrt.write_bitcode_to_path(Path::new("irrt.bc"));
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}
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main.link_in_module(irrt).unwrap();
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let mut function_iter = main.get_first_function();
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while let Some(func) = function_iter {
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if func.count_basic_blocks() > 0 && func.get_name().to_str().unwrap() != "run" {
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func.set_linkage(inkwell::module::Linkage::Private);
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}
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function_iter = func.get_next_function();
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}
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let target_machine = llvm_options
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.target
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.create_target_machine(llvm_options.opt_level)
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.expect("couldn't create target machine");
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let pass_options = PassBuilderOptions::create();
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pass_options.set_merge_functions(true);
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let passes = format!("default<O{}>", opt_level as u32);
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let result = main.run_passes(passes.as_str(), &target_machine, pass_options);
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if let Err(err) = result {
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panic!("Failed to run optimization for module `main`: {}", err.to_string());
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}
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target_machine
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.write_to_file(&main, FileType::Object, Path::new("module.o"))
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.expect("couldn't write module to file");
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}
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