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Add naive local and temporary spills

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This commit is contained in:
Rerumu 2023-06-25 22:16:37 -04:00
parent 5622aa661e
commit d33e4a6b3e
14 changed files with 589 additions and 402 deletions
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129
codegen/luajit/src/backend/expression.rs
View File

@ -4,13 +4,12 @@ use std::{
};
use wasm_ast::node::{
BinOp, CmpOp, Expression, GetGlobal, GetLocal, GetTemporary, LoadAt, MemorySize, Select, UnOp,
Value,
BinOp, CmpOp, Expression, GetGlobal, LoadAt, Local, MemorySize, Select, Temporary, UnOp, Value,
};
use crate::analyzer::as_symbol::AsSymbol;
use super::manager::{write_separated, DriverNoContext};
use super::manager::{write_separated, Driver, Manager};
macro_rules! impl_write_number {
($name:tt, $numeric:ty) => {
@ -26,43 +25,55 @@ macro_rules! impl_write_number {
};
}
impl DriverNoContext for Select {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Select {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "(")?;
Condition(self.condition()).write(w)?;
Condition(self.condition()).write(mng, w)?;
write!(w, " and ")?;
self.on_true().write(w)?;
self.on_true().write(mng, w)?;
write!(w, " or ")?;
self.on_false().write(w)?;
self.on_false().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for GetTemporary {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "reg_{}", self.var())
impl Driver for Temporary {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let var = self.var();
if let Some(var) = var.checked_sub(mng.num_temp()) {
write!(w, "reg_spill[{}]", var + 1)
} else {
write!(w, "reg_{var}")
}
}
}
impl DriverNoContext for GetLocal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "loc_{}", self.var())
impl Driver for Local {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let var = self.var();
if let Some(var) = var.checked_sub(mng.num_local()) {
write!(w, "loc_spill[{}]", var + 1)
} else {
write!(w, "loc_{var}")
}
}
}
impl DriverNoContext for GetGlobal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for GetGlobal {
fn write(&self, _mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "GLOBAL_LIST[{}].value", self.var())
}
}
impl DriverNoContext for LoadAt {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for LoadAt {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let name = self.load_type().as_name();
let memory = self.memory();
write!(w, "load_{name}(memory_at_{memory}, ")?;
self.pointer().write(w)?;
self.pointer().write(mng, w)?;
if self.offset() != 0 {
write!(w, " + {}", self.offset())?;
@ -72,8 +83,8 @@ impl DriverNoContext for LoadAt {
}
}
impl DriverNoContext for MemorySize {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for MemorySize {
fn write(&self, _mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "memory_at_{}.min", self.memory())
}
}
@ -81,8 +92,8 @@ impl DriverNoContext for MemorySize {
impl_write_number!(write_f32, f32);
impl_write_number!(write_f64, f64);
impl DriverNoContext for Value {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Value {
fn write(&self, _mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
match self {
Self::I32(i) => write!(w, "{i}"),
Self::I64(i) => write!(w, "{i}LL"),
@ -92,97 +103,97 @@ impl DriverNoContext for Value {
}
}
impl DriverNoContext for UnOp {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for UnOp {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let (a, b) = self.op_type().as_name();
write!(w, "{a}_{b}(")?;
self.rhs().write(w)?;
self.rhs().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for BinOp {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for BinOp {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if let Some(symbol) = self.op_type().as_symbol() {
write!(w, "(")?;
self.lhs().write(w)?;
self.lhs().write(mng, w)?;
write!(w, " {symbol} ")?;
} else {
let (head, tail) = self.op_type().as_name();
write!(w, "{head}_{tail}(")?;
self.lhs().write(w)?;
self.lhs().write(mng, w)?;
write!(w, ", ")?;
}
self.rhs().write(w)?;
self.rhs().write(mng, w)?;
write!(w, ")")
}
}
struct CmpOpBoolean<'a>(&'a CmpOp);
impl DriverNoContext for CmpOpBoolean<'_> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for CmpOpBoolean<'_> {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let cmp = self.0;
if let Some(symbol) = cmp.op_type().as_symbol() {
cmp.lhs().write(w)?;
cmp.lhs().write(mng, w)?;
write!(w, " {symbol} ")?;
cmp.rhs().write(w)
cmp.rhs().write(mng, w)
} else {
let (head, tail) = cmp.op_type().as_name();
write!(w, "{head}_{tail}(")?;
cmp.lhs().write(w)?;
cmp.lhs().write(mng, w)?;
write!(w, ", ")?;
cmp.rhs().write(w)?;
cmp.rhs().write(mng, w)?;
write!(w, ")")
}
}
}
impl DriverNoContext for CmpOp {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for CmpOp {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "(")?;
CmpOpBoolean(self).write(w)?;
CmpOpBoolean(self).write(mng, w)?;
write!(w, " and 1 or 0)")
}
}
pub struct Condition<'a>(pub &'a Expression);
impl DriverNoContext for Condition<'_> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Condition<'_> {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if let Expression::CmpOp(node) = self.0 {
CmpOpBoolean(node).write(w)
CmpOpBoolean(node).write(mng, w)
} else {
self.0.write(w)?;
self.0.write(mng, w)?;
write!(w, " ~= 0")
}
}
}
impl DriverNoContext for Expression {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Expression {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
match self {
Self::Select(e) => e.write(w),
Self::GetTemporary(e) => e.write(w),
Self::GetLocal(e) => e.write(w),
Self::GetGlobal(e) => e.write(w),
Self::LoadAt(e) => e.write(w),
Self::MemorySize(e) => e.write(w),
Self::Value(e) => e.write(w),
Self::UnOp(e) => e.write(w),
Self::BinOp(e) => e.write(w),
Self::CmpOp(e) => e.write(w),
Self::Select(e) => e.write(mng, w),
Self::GetTemporary(e) => e.write(mng, w),
Self::GetLocal(e) => e.write(mng, w),
Self::GetGlobal(e) => e.write(mng, w),
Self::LoadAt(e) => e.write(mng, w),
Self::MemorySize(e) => e.write(mng, w),
Self::Value(e) => e.write(mng, w),
Self::UnOp(e) => e.write(mng, w),
Self::BinOp(e) => e.write(mng, w),
Self::CmpOp(e) => e.write(mng, w),
}
}
}
impl DriverNoContext for &[Expression] {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write_separated(self.iter(), |e, w| e.write(w), w)
impl Driver for &[Expression] {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write_separated(self.iter(), |e, w| e.write(mng, w), w)
}
}

79
codegen/luajit/src/backend/manager.rs
View File

@ -1,10 +1,11 @@
use std::{
collections::HashMap,
io::{Result, Write},
ops::Range,
};
use wasm_ast::node::BrTable;
use wasm_ast::node::{BrTable, FuncData};
use crate::analyzer::{br_table, localize};
#[macro_export]
macro_rules! indentation {
@ -31,23 +32,81 @@ macro_rules! line {
}};
}
#[derive(Default)]
fn get_pinned_registers(
upvalues: usize,
params: usize,
locals: usize,
temporaries: usize,
) -> (usize, usize) {
const MAX_LOCAL_COUNT: usize = 170;
let available = MAX_LOCAL_COUNT
.saturating_sub(upvalues)
.saturating_sub(params);
let locals = available.min(locals);
let temporaries = available.saturating_sub(locals).min(temporaries);
(params + locals, temporaries)
}
pub struct Manager {
table_map: HashMap<usize, usize>,
label_list: Vec<usize>,
num_local: usize,
num_temp: usize,
num_label: usize,
label_list: Vec<usize>,
indentation: usize,
}
impl Manager {
pub fn empty() -> Self {
Self {
table_map: HashMap::new(),
num_local: 0,
num_temp: usize::MAX,
num_label: 0,
label_list: Vec::new(),
indentation: 0,
}
}
pub fn function(ast: &FuncData) -> Self {
let (upvalues, memories) = localize::visit(ast);
let table_map = br_table::visit(ast);
let (num_local, num_temp) = get_pinned_registers(
upvalues.len() + memories.len(),
ast.num_param(),
ast.local_data().len(),
ast.num_stack(),
);
Self {
table_map,
num_local,
num_temp,
num_label: 0,
label_list: Vec::new(),
indentation: 0,
}
}
pub fn get_table_index(&self, table: &BrTable) -> usize {
let id = table as *const _ as usize;
self.table_map[&id]
}
pub fn set_table_map(&mut self, map: HashMap<usize, usize>) {
self.table_map = map;
pub fn has_table(&self) -> bool {
!self.table_map.is_empty()
}
pub const fn num_local(&self) -> usize {
self.num_local
}
pub const fn num_temp(&self) -> usize {
self.num_temp
}
pub fn label_list(&self) -> &[usize] {
@ -82,10 +141,6 @@ pub trait Driver {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()>;
}
pub trait DriverNoContext {
fn write(&self, w: &mut dyn Write) -> Result<()>;
}
pub fn write_separated<I, T, M>(mut iter: I, mut func: M, w: &mut dyn Write) -> Result<()>
where
M: FnMut(T, &mut dyn Write) -> Result<()>,
@ -101,7 +156,3 @@ where
func(v, w)
})
}
pub fn write_ascending(prefix: &str, range: Range<usize>, w: &mut dyn Write) -> Result<()> {
write_separated(range, |i, w| write!(w, "{prefix}_{i}"), w)
}

181
codegen/luajit/src/backend/statement.rs
View File

@ -5,26 +5,32 @@ use std::{
use wasm_ast::node::{
Block, Br, BrIf, BrTable, Call, CallIndirect, FuncData, If, LabelType, MemoryCopy, MemoryFill,
MemoryGrow, SetGlobal, SetLocal, SetTemporary, Statement, StoreAt, Terminator,
MemoryGrow, ResultList, SetGlobal, SetLocal, SetTemporary, Statement, StoreAt, Terminator,
};
use wasmparser::ValType;
use crate::{analyzer::br_table, indentation, indented, line};
use crate::{backend::manager::write_separated, indentation, indented, line};
use super::{
expression::Condition,
manager::{write_ascending, write_separated, Driver, DriverNoContext, Manager},
manager::{Driver, Manager},
};
impl Driver for ResultList {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write_separated(self.iter(), |t, w| t.write(mng, w), w)
}
}
impl Driver for Br {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let level = *mng.label_list().iter().nth_back(self.target()).unwrap();
if !self.align().is_aligned() {
indentation!(mng, w)?;
write_ascending("reg", self.align().new_range(), w)?;
self.align().new_range().write(mng, w)?;
write!(w, " = ")?;
write_ascending("reg", self.align().old_range(), w)?;
self.align().old_range().write(mng, w)?;
writeln!(w)?;
}
@ -97,7 +103,7 @@ fn write_table_setup(table: &BrTable, mng: &mut Manager, w: &mut dyn Write) -> R
line!(mng, w, "end")?;
indented!(mng, w, "temp = br_map[{id}][")?;
table.condition().write(w)?;
table.condition().write(mng, w)?;
writeln!(w, "] or {}", table.default().target())
}
@ -174,7 +180,7 @@ impl Driver for Block {
impl Driver for BrIf {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
indented!(mng, w, "if ")?;
Condition(self.condition()).write(w)?;
Condition(self.condition()).write(mng, w)?;
writeln!(w, " then")?;
mng.indent();
self.target().write(mng, w)?;
@ -186,7 +192,7 @@ impl Driver for BrIf {
impl Driver for If {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
indented!(mng, w, "if ")?;
Condition(self.condition()).write(w)?;
Condition(self.condition()).write(mng, w)?;
writeln!(w, " then")?;
mng.indent();
@ -204,120 +210,119 @@ impl Driver for If {
}
}
fn write_call_store(result: Range<usize>, w: &mut dyn Write) -> Result<()> {
if result.is_empty() {
return Ok(());
impl Driver for Call {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !self.result_list().is_empty() {
self.result_list().write(mng, w)?;
write!(w, " = ")?;
}
write_ascending("reg", result, w)?;
write!(w, " = ")
}
impl DriverNoContext for Call {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write_call_store(self.result(), w)?;
write!(w, "FUNC_LIST[{}](", self.function())?;
self.param_list().write(w)?;
self.param_list().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for CallIndirect {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write_call_store(self.result(), w)?;
impl Driver for CallIndirect {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !self.result_list().is_empty() {
self.result_list().write(mng, w)?;
write!(w, " = ")?;
}
write!(w, "TABLE_LIST[{}].data[", self.table())?;
self.index().write(w)?;
self.index().write(mng, w)?;
write!(w, "](")?;
self.param_list().write(w)?;
self.param_list().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for SetTemporary {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "reg_{} = ", self.var())?;
self.value().write(w)
impl Driver for SetTemporary {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
self.var().write(mng, w)?;
write!(w, " = ")?;
self.value().write(mng, w)
}
}
impl DriverNoContext for SetLocal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "loc_{} = ", self.var())?;
self.value().write(w)
impl Driver for SetLocal {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
self.var().write(mng, w)?;
write!(w, " = ")?;
self.value().write(mng, w)
}
}
impl DriverNoContext for SetGlobal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for SetGlobal {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "GLOBAL_LIST[{}].value = ", self.var())?;
self.value().write(w)
self.value().write(mng, w)
}
}
impl DriverNoContext for StoreAt {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for StoreAt {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let name = self.store_type().as_name();
let memory = self.memory();
write!(w, "store_{name}(memory_at_{memory}, ")?;
self.pointer().write(w)?;
self.pointer().write(mng, w)?;
if self.offset() != 0 {
write!(w, " + {}", self.offset())?;
}
write!(w, ", ")?;
self.value().write(w)?;
self.value().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for MemoryGrow {
fn write(&self, w: &mut dyn Write) -> Result<()> {
let result = self.result();
impl Driver for MemoryGrow {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let memory = self.memory();
write!(w, "reg_{result} = rt.allocator.grow(memory_at_{memory}, ")?;
self.size().write(w)?;
self.result().write(mng, w)?;
write!(w, " = rt.allocator.grow(memory_at_{memory}, ")?;
self.size().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for MemoryCopy {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for MemoryCopy {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let memory_1 = self.destination().memory();
let memory_2 = self.source().memory();
write!(w, "rt.store.copy(memory_at_{memory_1}, ")?;
self.destination().pointer().write(w)?;
self.destination().pointer().write(mng, w)?;
write!(w, ", memory_at_{memory_2}, ")?;
self.source().pointer().write(w)?;
self.source().pointer().write(mng, w)?;
write!(w, ", ")?;
self.size().write(w)?;
self.size().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for MemoryFill {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for MemoryFill {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let memory = self.destination().memory();
write!(w, "rt.store.fill(memory_at_{memory}, ")?;
self.destination().pointer().write(w)?;
self.destination().pointer().write(mng, w)?;
write!(w, ", ")?;
self.size().write(w)?;
self.size().write(mng, w)?;
write!(w, ", ")?;
self.value().write(w)?;
self.value().write(mng, w)?;
write!(w, ")")
}
}
fn write_stat(stat: &dyn DriverNoContext, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
fn write_stat(stat: &dyn Driver, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
indentation!(mng, w)?;
stat.write(w)?;
stat.write(mng, w)?;
writeln!(w)
}
@ -342,30 +347,51 @@ impl Driver for Statement {
fn write_parameter_list(ast: &FuncData, w: &mut dyn Write) -> Result<()> {
write!(w, "function(")?;
write_ascending("loc", 0..ast.num_param(), w)?;
write_separated(0..ast.num_param(), |i, w| write!(w, "loc_{i}"), w)?;
writeln!(w, ")")
}
const fn type_to_zero(typ: ValType) -> &'static str {
match typ {
ValType::F32 | ValType::F64 => "0.0",
ValType::I64 => "0LL",
_ => "0",
}
}
fn write_variable_list(ast: &FuncData, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let mut total = ast.num_param();
let mut locals = ast.local_data().iter().copied();
let num_local = mng.num_local() - ast.num_param();
for data in ast.local_data().iter().filter(|v| v.0 != 0) {
let range = total..total + usize::try_from(data.0).unwrap();
let typed = if data.1 == ValType::I64 { "0LL" } else { "0" }.as_bytes();
for (i, typ) in locals.by_ref().enumerate().take(num_local) {
let index = ast.num_param() + i;
let zero = type_to_zero(typ);
total = range.end;
indented!(mng, w, "local ")?;
write_ascending("loc", range.clone(), w)?;
write!(w, " = ")?;
write_separated(range, |_, w| w.write_all(typed), w)?;
writeln!(w)?;
line!(mng, w, "local loc_{index} = {zero}")?;
}
if ast.num_stack() != 0 {
indented!(mng, w, "local ")?;
write_ascending("reg", 0..ast.num_stack(), w)?;
writeln!(w)?;
if locals.len() != 0 {
indented!(mng, w, "local loc_spill = {{ ")?;
for typ in locals {
let zero = type_to_zero(typ);
write!(w, "{zero}, ")?;
}
writeln!(w, "}}")?;
}
let mut temporaries = 0..ast.num_stack();
for i in temporaries.by_ref().take(mng.num_temp()) {
line!(mng, w, "local reg_{i}")?;
}
if !temporaries.is_empty() {
let len = temporaries.len();
line!(mng, w, "local reg_spill = table.create({len})")?;
}
Ok(())
@ -373,23 +399,22 @@ fn write_variable_list(ast: &FuncData, mng: &mut Manager, w: &mut dyn Write) ->
impl Driver for FuncData {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let br_map = br_table::visit(self);
mng.indent();
write_parameter_list(self, w)?;
write_variable_list(self, mng, w)?;
if !br_map.is_empty() {
if mng.has_table() {
line!(mng, w, "local br_map, temp = {{}}, nil")?;
}
mng.set_table_map(br_map);
self.code().write(mng, w)?;
if self.num_result() != 0 {
indented!(mng, w, "return ")?;
write_ascending("reg", 0..self.num_result(), w)?;
ResultList::new(0, self.num_result()).write(mng, w)?;
writeln!(w)?;
}

13
codegen/luajit/src/translator.rs
View File

@ -15,7 +15,7 @@ use wasmparser::{
use crate::{
analyzer::localize,
backend::manager::{Driver, DriverNoContext, Manager},
backend::manager::{Driver, Manager},
};
trait AsIEName {
@ -51,7 +51,7 @@ fn write_constant(init: &ConstExpr, type_info: &TypeInfo, w: &mut dyn Write) ->
let func = Factory::from_type_info(type_info).create_anonymous(&code);
if let Some(Statement::SetTemporary(stat)) = func.code().code().last() {
stat.value().write(w)
stat.value().write(&mut Manager::empty(), w)
} else {
writeln!(w, r#"error("Valueless constant")"#)
}
@ -178,6 +178,7 @@ fn write_element_list(list: &[Element], type_info: &TypeInfo, w: &mut dyn Write)
}
}
}
writeln!(w, " }}")?;
writeln!(w, "\t\ttable.move(data, 1, #data, offset, target)")?;
writeln!(w, "\tend")?;
@ -270,7 +271,7 @@ fn write_func_list(wasm: &Module, func_list: &[FuncData], w: &mut dyn Write) ->
write_func_start(wasm, index, w)?;
v.write(&mut Manager::default(), w)
v.write(&mut Manager::function(v), w)
})
}
@ -309,9 +310,9 @@ fn write_module_start(
/// # Errors
/// Returns `Err` if writing to `Write` failed.
pub fn from_inst_list(code: &[Operator], type_info: &TypeInfo, w: &mut dyn Write) -> Result<()> {
Factory::from_type_info(type_info)
.create_anonymous(code)
.write(&mut Manager::default(), w)
let ast = Factory::from_type_info(type_info).create_anonymous(code);
ast.write(&mut Manager::function(&ast), w)
}
/// # Errors

2
codegen/luau/src/analyzer/localize.rs
View File

@ -92,7 +92,7 @@ pub fn visit(ast: &FuncData) -> (BTreeSet<(&'static str, &'static str)>, BTreeSe
memory_set: BTreeSet::new(),
};
if ast.local_data().iter().any(|v| v.1 == ValType::I64) {
if ast.local_data().iter().any(|&v| v == ValType::I64) {
visit.local_set.insert(("i64", "ZERO"));
}

129
codegen/luau/src/backend/expression.rs
View File

@ -4,13 +4,12 @@ use std::{
};
use wasm_ast::node::{
BinOp, CmpOp, Expression, GetGlobal, GetLocal, GetTemporary, LoadAt, MemorySize, Select, UnOp,
Value,
BinOp, CmpOp, Expression, GetGlobal, LoadAt, Local, MemorySize, Select, Temporary, UnOp, Value,
};
use crate::analyzer::as_symbol::AsSymbol;
use super::manager::{write_separated, DriverNoContext};
use super::manager::{write_separated, Driver, Manager};
macro_rules! impl_write_number {
($name:tt, $numeric:ty) => {
@ -26,43 +25,55 @@ macro_rules! impl_write_number {
};
}
impl DriverNoContext for Select {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Select {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "(if ")?;
Condition(self.condition()).write(w)?;
Condition(self.condition()).write(mng, w)?;
write!(w, " then ")?;
self.on_true().write(w)?;
self.on_true().write(mng, w)?;
write!(w, " else ")?;
self.on_false().write(w)?;
self.on_false().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for GetTemporary {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "reg_{}", self.var())
impl Driver for Temporary {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let var = self.var();
if let Some(var) = var.checked_sub(mng.num_temp()) {
write!(w, "reg_spill[{}]", var + 1)
} else {
write!(w, "reg_{var}")
}
}
}
impl DriverNoContext for GetLocal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "loc_{}", self.var())
impl Driver for Local {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let var = self.var();
if let Some(var) = var.checked_sub(mng.num_local()) {
write!(w, "loc_spill[{}]", var + 1)
} else {
write!(w, "loc_{var}")
}
}
}
impl DriverNoContext for GetGlobal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for GetGlobal {
fn write(&self, _mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "GLOBAL_LIST[{}].value", self.var())
}
}
impl DriverNoContext for LoadAt {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for LoadAt {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let name = self.load_type().as_name();
let memory = self.memory();
write!(w, "load_{name}(memory_at_{memory}, ")?;
self.pointer().write(w)?;
self.pointer().write(mng, w)?;
if self.offset() != 0 {
write!(w, " + {}", self.offset())?;
@ -72,8 +83,8 @@ impl DriverNoContext for LoadAt {
}
}
impl DriverNoContext for MemorySize {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for MemorySize {
fn write(&self, _mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "memory_at_{}.min", self.memory())
}
}
@ -101,8 +112,8 @@ fn write_i64(number: i64, w: &mut dyn Write) -> Result<()> {
impl_write_number!(write_f32, f32);
impl_write_number!(write_f64, f64);
impl DriverNoContext for Value {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Value {
fn write(&self, _mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
match self {
Self::I32(i) => write_i32(*i, w),
Self::I64(i) => write_i64(*i, w),
@ -112,97 +123,97 @@ impl DriverNoContext for Value {
}
}
impl DriverNoContext for UnOp {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for UnOp {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let (a, b) = self.op_type().as_name();
write!(w, "{a}_{b}(")?;
self.rhs().write(w)?;
self.rhs().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for BinOp {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for BinOp {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if let Some(symbol) = self.op_type().as_symbol() {
write!(w, "(")?;
self.lhs().write(w)?;
self.lhs().write(mng, w)?;
write!(w, " {symbol} ")?;
} else {
let (head, tail) = self.op_type().as_name();
write!(w, "{head}_{tail}(")?;
self.lhs().write(w)?;
self.lhs().write(mng, w)?;
write!(w, ", ")?;
}
self.rhs().write(w)?;
self.rhs().write(mng, w)?;
write!(w, ")")
}
}
struct CmpOpBoolean<'a>(&'a CmpOp);
impl DriverNoContext for CmpOpBoolean<'_> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for CmpOpBoolean<'_> {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let cmp = self.0;
if let Some(symbol) = cmp.op_type().as_symbol() {
cmp.lhs().write(w)?;
cmp.lhs().write(mng, w)?;
write!(w, " {symbol} ")?;
cmp.rhs().write(w)
cmp.rhs().write(mng, w)
} else {
let (head, tail) = cmp.op_type().as_name();
write!(w, "{head}_{tail}(")?;
cmp.lhs().write(w)?;
cmp.lhs().write(mng, w)?;
write!(w, ", ")?;
cmp.rhs().write(w)?;
cmp.rhs().write(mng, w)?;
write!(w, ")")
}
}
}
impl DriverNoContext for CmpOp {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for CmpOp {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "(if ")?;
CmpOpBoolean(self).write(w)?;
CmpOpBoolean(self).write(mng, w)?;
write!(w, " then 1 else 0)")
}
}
pub struct Condition<'a>(pub &'a Expression);
impl DriverNoContext for Condition<'_> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Condition<'_> {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if let Expression::CmpOp(node) = self.0 {
CmpOpBoolean(node).write(w)
CmpOpBoolean(node).write(mng, w)
} else {
self.0.write(w)?;
self.0.write(mng, w)?;
write!(w, " ~= 0")
}
}
}
impl DriverNoContext for Expression {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for Expression {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
match self {
Self::Select(e) => e.write(w),
Self::GetTemporary(e) => e.write(w),
Self::GetLocal(e) => e.write(w),
Self::GetGlobal(e) => e.write(w),
Self::LoadAt(e) => e.write(w),
Self::MemorySize(e) => e.write(w),
Self::Value(e) => e.write(w),
Self::UnOp(e) => e.write(w),
Self::BinOp(e) => e.write(w),
Self::CmpOp(e) => e.write(w),
Self::Select(e) => e.write(mng, w),
Self::GetTemporary(e) => e.write(mng, w),
Self::GetLocal(e) => e.write(mng, w),
Self::GetGlobal(e) => e.write(mng, w),
Self::LoadAt(e) => e.write(mng, w),
Self::MemorySize(e) => e.write(mng, w),
Self::Value(e) => e.write(mng, w),
Self::UnOp(e) => e.write(mng, w),
Self::BinOp(e) => e.write(mng, w),
Self::CmpOp(e) => e.write(mng, w),
}
}
}
impl DriverNoContext for &[Expression] {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write_separated(self.iter(), |e, w| e.write(w), w)
impl Driver for &[Expression] {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write_separated(self.iter(), |e, w| e.write(mng, w), w)
}
}

78
codegen/luau/src/backend/manager.rs
View File

@ -1,10 +1,11 @@
use std::{
collections::HashMap,
io::{Result, Write},
ops::Range,
};
use wasm_ast::node::{BrTable, LabelType};
use wasm_ast::node::{BrTable, FuncData, LabelType};
use crate::analyzer::{br_target, localize};
#[macro_export]
macro_rules! indentation {
@ -31,30 +32,87 @@ macro_rules! line {
}};
}
#[derive(Default)]
fn get_pinned_registers(
upvalues: usize,
params: usize,
locals: usize,
temporaries: usize,
) -> (usize, usize) {
const MAX_LOCAL_COUNT: usize = 170;
let available = MAX_LOCAL_COUNT
.saturating_sub(upvalues)
.saturating_sub(params);
let locals = available.min(locals);
let temporaries = available.saturating_sub(locals).min(temporaries);
(params + locals, temporaries)
}
pub struct Manager {
table_map: HashMap<usize, usize>,
has_branch: bool,
num_local: usize,
num_temp: usize,
label_list: Vec<Option<LabelType>>,
indentation: usize,
}
impl Manager {
pub fn empty() -> Self {
Self {
table_map: HashMap::new(),
has_branch: false,
num_local: 0,
num_temp: usize::MAX,
label_list: Vec::new(),
indentation: 0,
}
}
pub fn function(ast: &FuncData) -> Self {
let (upvalues, memories) = localize::visit(ast);
let (table_map, has_branch) = br_target::visit(ast);
let (num_local, num_temp) = get_pinned_registers(
upvalues.len() + memories.len(),
ast.num_param(),
ast.local_data().len(),
ast.num_stack(),
);
Self {
table_map,
has_branch,
num_local,
num_temp,
label_list: Vec::new(),
indentation: 0,
}
}
pub fn get_table_index(&self, table: &BrTable) -> usize {
let id = table as *const _ as usize;
self.table_map[&id]
}
pub fn set_branch_information(&mut self, table_map: HashMap<usize, usize>, has_branch: bool) {
self.table_map = table_map;
self.has_branch = has_branch;
pub fn has_table(&self) -> bool {
!self.table_map.is_empty()
}
pub const fn has_branch(&self) -> bool {
self.has_branch
}
pub const fn num_local(&self) -> usize {
self.num_local
}
pub const fn num_temp(&self) -> usize {
self.num_temp
}
pub fn label_list(&self) -> &[Option<LabelType>] {
&self.label_list
}
@ -84,10 +142,6 @@ pub trait Driver {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()>;
}
pub trait DriverNoContext {
fn write(&self, w: &mut dyn Write) -> Result<()>;
}
pub fn write_separated<I, T, M>(mut iter: I, mut func: M, w: &mut dyn Write) -> Result<()>
where
M: FnMut(T, &mut dyn Write) -> Result<()>,
@ -103,7 +157,3 @@ where
func(v, w)
})
}
pub fn write_ascending(prefix: &str, range: Range<usize>, w: &mut dyn Write) -> Result<()> {
write_separated(range, |i, w| write!(w, "{prefix}_{i}"), w)
}

203
codegen/luau/src/backend/statement.rs
View File

@ -5,24 +5,30 @@ use std::{
use wasm_ast::node::{
Block, Br, BrIf, BrTable, Call, CallIndirect, FuncData, If, LabelType, MemoryCopy, MemoryFill,
MemoryGrow, SetGlobal, SetLocal, SetTemporary, Statement, StoreAt, Terminator,
MemoryGrow, ResultList, SetGlobal, SetLocal, SetTemporary, Statement, StoreAt, Terminator,
};
use wasmparser::ValType;
use crate::{analyzer::br_target, indentation, indented, line};
use crate::{backend::manager::write_separated, indentation, indented, line};
use super::{
expression::Condition,
manager::{write_ascending, write_separated, Driver, DriverNoContext, Manager},
manager::{Driver, Manager},
};
impl Driver for ResultList {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write_separated(self.iter(), |t, w| t.write(mng, w), w)
}
}
impl Driver for Br {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !self.align().is_aligned() {
indentation!(mng, w)?;
write_ascending("reg", self.align().new_range(), w)?;
self.align().new_range().write(mng, w)?;
write!(w, " = ")?;
write_ascending("reg", self.align().old_range(), w)?;
self.align().old_range().write(mng, w)?;
writeln!(w)?;
}
@ -106,7 +112,7 @@ fn write_table_setup(table: &BrTable, mng: &mut Manager, w: &mut dyn Write) -> R
line!(mng, w, "end")?;
indented!(mng, w, "temp = br_map[{id}][")?;
table.condition().write(w)?;
table.condition().write(mng, w)?;
writeln!(w, "] or {}", table.default().target())
}
@ -193,7 +199,7 @@ impl Driver for Block {
impl Driver for BrIf {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
indented!(mng, w, "if ")?;
Condition(self.condition()).write(w)?;
Condition(self.condition()).write(mng, w)?;
writeln!(w, " then")?;
mng.indent();
self.target().write(mng, w)?;
@ -205,7 +211,7 @@ impl Driver for BrIf {
impl Driver for If {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
indented!(mng, w, "if ")?;
Condition(self.condition()).write(w)?;
Condition(self.condition()).write(mng, w)?;
writeln!(w, " then")?;
mng.indent();
@ -223,120 +229,119 @@ impl Driver for If {
}
}
fn write_call_store(result: Range<usize>, w: &mut dyn Write) -> Result<()> {
if result.is_empty() {
return Ok(());
impl Driver for Call {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !self.result_list().is_empty() {
self.result_list().write(mng, w)?;
write!(w, " = ")?;
}
write_ascending("reg", result, w)?;
write!(w, " = ")
}
impl DriverNoContext for Call {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write_call_store(self.result(), w)?;
write!(w, "FUNC_LIST[{}](", self.function())?;
self.param_list().write(w)?;
self.param_list().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for CallIndirect {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write_call_store(self.result(), w)?;
impl Driver for CallIndirect {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !self.result_list().is_empty() {
self.result_list().write(mng, w)?;
write!(w, " = ")?;
}
write!(w, "TABLE_LIST[{}].data[", self.table())?;
self.index().write(w)?;
self.index().write(mng, w)?;
write!(w, "](")?;
self.param_list().write(w)?;
self.param_list().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for SetTemporary {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "reg_{} = ", self.var())?;
self.value().write(w)
impl Driver for SetTemporary {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
self.var().write(mng, w)?;
write!(w, " = ")?;
self.value().write(mng, w)
}
}
impl DriverNoContext for SetLocal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
write!(w, "loc_{} = ", self.var())?;
self.value().write(w)
impl Driver for SetLocal {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
self.var().write(mng, w)?;
write!(w, " = ")?;
self.value().write(mng, w)
}
}
impl DriverNoContext for SetGlobal {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for SetGlobal {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
write!(w, "GLOBAL_LIST[{}].value = ", self.var())?;
self.value().write(w)
self.value().write(mng, w)
}
}
impl DriverNoContext for StoreAt {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for StoreAt {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let name = self.store_type().as_name();
let memory = self.memory();
write!(w, "store_{name}(memory_at_{memory}, ")?;
self.pointer().write(w)?;
self.pointer().write(mng, w)?;
if self.offset() != 0 {
write!(w, " + {}", self.offset())?;
}
write!(w, ", ")?;
self.value().write(w)?;
self.value().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for MemoryGrow {
fn write(&self, w: &mut dyn Write) -> Result<()> {
let result = self.result();
impl Driver for MemoryGrow {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let memory = self.memory();
write!(w, "reg_{result} = rt.allocator.grow(memory_at_{memory}, ")?;
self.size().write(w)?;
self.result().write(mng, w)?;
write!(w, " = rt.allocator.grow(memory_at_{memory}, ")?;
self.size().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for MemoryCopy {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for MemoryCopy {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let memory_1 = self.destination().memory();
let memory_2 = self.source().memory();
write!(w, "rt.store.copy(memory_at_{memory_1}, ")?;
self.destination().pointer().write(w)?;
self.destination().pointer().write(mng, w)?;
write!(w, ", memory_at_{memory_2}, ")?;
self.source().pointer().write(w)?;
self.source().pointer().write(mng, w)?;
write!(w, ", ")?;
self.size().write(w)?;
self.size().write(mng, w)?;
write!(w, ")")
}
}
impl DriverNoContext for MemoryFill {
fn write(&self, w: &mut dyn Write) -> Result<()> {
impl Driver for MemoryFill {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let memory = self.destination().memory();
write!(w, "rt.store.fill(memory_at_{memory}, ")?;
self.destination().pointer().write(w)?;
self.destination().pointer().write(mng, w)?;
write!(w, ", ")?;
self.size().write(w)?;
self.size().write(mng, w)?;
write!(w, ", ")?;
self.value().write(w)?;
self.value().write(mng, w)?;
write!(w, ")")
}
}
fn write_stat(stat: &dyn DriverNoContext, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
fn write_stat(stat: &dyn Driver, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
indentation!(mng, w)?;
stat.write(w)?;
stat.write(mng, w)?;
writeln!(w)
}
@ -359,45 +364,53 @@ impl Driver for Statement {
}
}
fn has_sane_variables(ast: &FuncData) -> bool {
let local_count = ast.local_data().iter().map(|v| v.0).sum::<u32>();
let local_count = usize::try_from(local_count).unwrap();
let param_count = ast.num_param();
let temp_count = ast.num_stack();
temp_count + param_count + local_count < 170
}
fn write_parameter_list(ast: &FuncData, w: &mut dyn Write) -> Result<()> {
write!(w, "function(")?;
write_ascending("loc", 0..ast.num_param(), w)?;
write_separated(0..ast.num_param(), |i, w| write!(w, "loc_{i}"), w)?;
writeln!(w, ")")
}
const fn type_to_zero(typ: ValType) -> &'static str {
match typ {
ValType::F32 | ValType::F64 => "0.0",
ValType::I64 => "i64_ZERO",
_ => "0",
}
}
fn write_variable_list(ast: &FuncData, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
let mut total = ast.num_param();
let mut locals = ast.local_data().iter().copied();
let num_local = mng.num_local() - ast.num_param();
for data in ast.local_data().iter().filter(|v| v.0 != 0) {
let range = total..total + usize::try_from(data.0).unwrap();
let zero = if data.1 == ValType::I64 {
"i64_ZERO"
} else {
"0"
};
for (i, typ) in locals.by_ref().enumerate().take(num_local) {
let index = ast.num_param() + i;
let zero = type_to_zero(typ);
total = range.end;
indented!(mng, w, "local ")?;
write_ascending("loc", range.clone(), w)?;
write!(w, " = ")?;
write_separated(range, |_, w| w.write_all(zero.as_bytes()), w)?;
writeln!(w)?;
line!(mng, w, "local loc_{index} = {zero}")?;
}
if ast.num_stack() != 0 {
indented!(mng, w, "local ")?;
write_ascending("reg", 0..ast.num_stack(), w)?;
writeln!(w)?;
if locals.len() != 0 {
indented!(mng, w, "local loc_spill = {{ ")?;
for typ in locals {
let zero = type_to_zero(typ);
write!(w, "{zero}, ")?;
}
writeln!(w, "}}")?;
}
let mut temporaries = 0..ast.num_stack();
for i in temporaries.by_ref().take(mng.num_temp()) {
line!(mng, w, "local reg_{i}")?;
}
if !temporaries.is_empty() {
let len = temporaries.len();
line!(mng, w, "local reg_spill = table.create({len})")?;
}
Ok(())
@ -405,34 +418,26 @@ fn write_variable_list(ast: &FuncData, mng: &mut Manager, w: &mut dyn Write) ->
impl Driver for FuncData {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !has_sane_variables(self) {
return Err(std::io::Error::new(
std::io::ErrorKind::Other,
"too many variables in function",
));
}
let (table_map, has_branch) = br_target::visit(self);
mng.indent();
write_parameter_list(self, w)?;
write_variable_list(self, mng, w)?;
if has_branch {
if mng.has_branch() {
line!(mng, w, "local desired")?;
}
if !table_map.is_empty() {
if mng.has_table() {
line!(mng, w, "local br_map = {{}}")?;
}
mng.set_branch_information(table_map, has_branch);
self.code().write(mng, w)?;
if self.num_result() != 0 {
indented!(mng, w, "return ")?;
write_ascending("reg", 0..self.num_result(), w)?;
ResultList::new(0, self.num_result()).write(mng, w)?;
writeln!(w)?;
}

12
codegen/luau/src/translator.rs
View File

@ -15,7 +15,7 @@ use wasmparser::{
use crate::{
analyzer::localize,
backend::manager::{Driver, DriverNoContext, Manager},
backend::manager::{Driver, Manager},
};
trait AsIEName {
@ -51,7 +51,7 @@ fn write_constant(init: &ConstExpr, type_info: &TypeInfo, w: &mut dyn Write) ->
let func = Factory::from_type_info(type_info).create_anonymous(&code);
if let Some(Statement::SetTemporary(stat)) = func.code().code().last() {
stat.value().write(w)
stat.value().write(&mut Manager::empty(), w)
} else {
writeln!(w, r#"error("Valueless constant")"#)
}
@ -283,7 +283,7 @@ fn write_func_list(wasm: &Module, func_list: &[FuncData], w: &mut dyn Write) ->
write_func_start(wasm, index, w)?;
v.write(&mut Manager::default(), w)
v.write(&mut Manager::function(v), w)
})
}
@ -322,9 +322,9 @@ fn write_module_start(
/// # Errors
/// Returns `Err` if writing to `Write` failed.
pub fn from_inst_list(code: &[Operator], type_info: &TypeInfo, w: &mut dyn Write) -> Result<()> {
Factory::from_type_info(type_info)
.create_anonymous(code)
.write(&mut Manager::default(), w)
let ast = Factory::from_type_info(type_info).create_anonymous(code);
ast.write(&mut Manager::function(&ast), w)
}
/// # Errors

30
wasm-ast/src/factory.rs
View File

@ -1,10 +1,10 @@
use wasmparser::{BlockType, FunctionBody, MemArg, Operator, Result};
use crate::{
module::{read_checked, TypeInfo},
module::{read_checked, read_checked_locals, TypeInfo},
node::{
BinOp, BinOpType, Block, Br, BrIf, BrTable, Call, CallIndirect, CmpOp, CmpOpType,
Expression, FuncData, GetGlobal, GetLocal, If, LabelType, LoadAt, LoadType, MemoryArgument,
Expression, FuncData, GetGlobal, If, LabelType, LoadAt, LoadType, Local, MemoryArgument,
MemoryCopy, MemoryFill, MemoryGrow, MemorySize, Select, SetGlobal, SetLocal, Statement,
StoreAt, StoreType, Terminator, UnOp, UnOpType, Value,
},
@ -253,13 +253,13 @@ impl<'a> Factory<'a> {
/// Returns an error if the function is malformed.
pub fn create_indexed(&mut self, index: usize, func: &FunctionBody) -> Result<FuncData> {
let code = read_checked(func.get_operators_reader()?)?;
let local = read_checked(func.get_locals_reader()?)?;
let local_data = read_checked_locals(func.get_locals_reader()?)?;
let (num_param, num_result) = self.type_info.by_func_index(index);
let data = self.build_stat_list(&code, num_result);
Ok(FuncData {
local_data: local,
local_data,
num_result,
num_param,
num_stack: data.stack.capacity,
@ -279,7 +279,7 @@ impl<'a> Factory<'a> {
BlockVariant::If => BlockData::If { num_result, ty },
BlockVariant::Else => {
old.stack.pop_len(num_result).for_each(drop);
old.stack.push_temporary(num_param);
old.stack.push_temporaries(num_param);
BlockData::Else { num_result }
}
@ -287,7 +287,7 @@ impl<'a> Factory<'a> {
self.target.stack = old.stack.split_last(num_param, num_result);
old.stack.push_temporary(num_result);
old.stack.push_temporaries(num_result);
self.pending.push(old);
}
@ -358,12 +358,12 @@ impl<'a> Factory<'a> {
self.target.leak_pre_call();
let result = self.target.stack.push_temporary(num_result);
let result_list = self.target.stack.push_temporaries(num_result);
let data = Statement::Call(Call {
function,
result,
param_list,
result_list,
});
self.target.code.push(data);
@ -376,13 +376,13 @@ impl<'a> Factory<'a> {
self.target.leak_pre_call();
let result = self.target.stack.push_temporary(num_result);
let result_list = self.target.stack.push_temporaries(num_result);
let data = Statement::CallIndirect(CallIndirect {
table,
index,
result,
param_list,
result_list,
});
self.target.code.push(data);
@ -521,14 +521,14 @@ impl<'a> Factory<'a> {
}
Operator::LocalGet { local_index } => {
let var = local_index.try_into().unwrap();
let data = Expression::GetLocal(GetLocal { var });
let data = Expression::GetLocal(Local { var });
self.target.stack.push_with_single(data);
}
Operator::LocalSet { local_index } => {
let var = local_index.try_into().unwrap();
let data = Statement::SetLocal(SetLocal {
var,
var: Local { var },
value: self.target.stack.pop().into(),
});
@ -537,9 +537,9 @@ impl<'a> Factory<'a> {
}
Operator::LocalTee { local_index } => {
let var = local_index.try_into().unwrap();
let get = Expression::GetLocal(GetLocal { var });
let get = Expression::GetLocal(Local { var });
let set = Statement::SetLocal(SetLocal {
var,
var: Local { var },
value: self.target.stack.pop().into(),
});
@ -594,7 +594,7 @@ impl<'a> Factory<'a> {
}
Operator::MemoryGrow { mem, .. } => {
let size = self.target.stack.pop().into();
let result = self.target.stack.push_temporary(1).start;
let result = self.target.stack.push_temporary();
let memory = mem.try_into().unwrap();
let data = Statement::MemoryGrow(MemoryGrow {

13
wasm-ast/src/module.rs
View File

@ -1,8 +1,9 @@
use std::collections::HashMap;
use wasmparser::{
BlockType, Data, Element, Export, ExternalKind, FunctionBody, Global, Import, MemoryType, Name,
NameSectionReader, Parser, Payload, Result, TableType, Type, TypeRef,
BlockType, Data, Element, Export, ExternalKind, FunctionBody, Global, Import, LocalsReader,
MemoryType, Name, NameSectionReader, Parser, Payload, Result, TableType, Type, TypeRef,
ValType,
};
#[derive(PartialEq, Eq, Clone, Copy)]
@ -45,6 +46,14 @@ where
reader.into_iter().collect()
}
pub(crate) fn read_checked_locals(reader: LocalsReader) -> Result<Vec<ValType>> {
read_checked(reader).map(|locals| {
let convert = |(a, b)| std::iter::repeat(b).take(usize::try_from(a).unwrap());
locals.into_iter().flat_map(convert).collect()
})
}
pub struct Module<'a> {
type_section: Vec<Type>,
import_section: Vec<Import<'a>>,

86
wasm-ast/src/node.rs
View File

@ -1,5 +1,3 @@
use std::ops::Range;
use wasmparser::{Operator, ValType};
#[allow(non_camel_case_types)]
@ -627,22 +625,22 @@ impl Select {
}
}
pub struct GetTemporary {
pub struct Temporary {
pub(crate) var: usize,
}
impl GetTemporary {
impl Temporary {
#[must_use]
pub const fn var(&self) -> usize {
self.var
}
}
pub struct GetLocal {
pub struct Local {
pub(crate) var: usize,
}
impl GetLocal {
impl Local {
#[must_use]
pub const fn var(&self) -> usize {
self.var
@ -797,8 +795,8 @@ impl CmpOp {
pub enum Expression {
Select(Select),
GetTemporary(GetTemporary),
GetLocal(GetLocal),
GetTemporary(Temporary),
GetLocal(Local),
GetGlobal(GetGlobal),
LoadAt(LoadAt),
MemorySize(MemorySize),
@ -808,6 +806,28 @@ pub enum Expression {
CmpOp(CmpOp),
}
#[derive(Clone, Copy)]
pub struct ResultList {
start: usize,
end: usize,
}
impl ResultList {
#[must_use]
pub const fn new(start: usize, end: usize) -> Self {
Self { start, end }
}
#[must_use]
pub const fn is_empty(self) -> bool {
self.start == self.end
}
pub fn iter(self) -> impl Iterator<Item = Temporary> {
(self.start..self.end).map(|var| Temporary { var })
}
}
pub struct Align {
pub(crate) new: usize,
pub(crate) old: usize,
@ -821,13 +841,13 @@ impl Align {
}
#[must_use]
pub const fn new_range(&self) -> Range<usize> {
self.new..self.new + self.length
pub const fn new_range(&self) -> ResultList {
ResultList::new(self.new, self.new + self.length)
}
#[must_use]
pub const fn old_range(&self) -> Range<usize> {
self.old..self.old + self.length
pub const fn old_range(&self) -> ResultList {
ResultList::new(self.old, self.old + self.length)
}
}
@ -949,8 +969,8 @@ impl If {
pub struct Call {
pub(crate) function: usize,
pub(crate) result: Range<usize>,
pub(crate) param_list: Vec<Expression>,
pub(crate) result_list: ResultList,
}
impl Call {
@ -960,21 +980,21 @@ impl Call {
}
#[must_use]
pub fn result(&self) -> Range<usize> {
self.result.clone()
pub fn param_list(&self) -> &[Expression] {
&self.param_list
}
#[must_use]
pub fn param_list(&self) -> &[Expression] {
&self.param_list
pub const fn result_list(&self) -> ResultList {
self.result_list
}
}
pub struct CallIndirect {
pub(crate) table: usize,
pub(crate) index: Box<Expression>,
pub(crate) result: Range<usize>,
pub(crate) param_list: Vec<Expression>,
pub(crate) result_list: ResultList,
}
impl CallIndirect {
@ -989,25 +1009,25 @@ impl CallIndirect {
}
#[must_use]
pub fn result(&self) -> Range<usize> {
self.result.clone()
pub fn param_list(&self) -> &[Expression] {
&self.param_list
}
#[must_use]
pub fn param_list(&self) -> &[Expression] {
&self.param_list
pub const fn result_list(&self) -> ResultList {
self.result_list
}
}
pub struct SetTemporary {
pub(crate) var: usize,
pub(crate) var: Temporary,
pub(crate) value: Box<Expression>,
}
impl SetTemporary {
#[must_use]
pub const fn var(&self) -> usize {
self.var
pub const fn var(&self) -> &Temporary {
&self.var
}
#[must_use]
@ -1017,14 +1037,14 @@ impl SetTemporary {
}
pub struct SetLocal {
pub(crate) var: usize,
pub(crate) var: Local,
pub(crate) value: Box<Expression>,
}
impl SetLocal {
#[must_use]
pub const fn var(&self) -> usize {
self.var
pub const fn var(&self) -> &Local {
&self.var
}
#[must_use]
@ -1087,7 +1107,7 @@ impl StoreAt {
pub struct MemoryGrow {
pub(crate) memory: usize,
pub(crate) result: usize,
pub(crate) result: Temporary,
pub(crate) size: Box<Expression>,
}
@ -1098,8 +1118,8 @@ impl MemoryGrow {
}
#[must_use]
pub const fn result(&self) -> usize {
self.result
pub const fn result(&self) -> &Temporary {
&self.result
}
#[must_use]
@ -1187,7 +1207,7 @@ pub enum Statement {
}
pub struct FuncData {
pub(crate) local_data: Vec<(u32, ValType)>,
pub(crate) local_data: Vec<ValType>,
pub(crate) num_result: usize,
pub(crate) num_param: usize,
pub(crate) num_stack: usize,
@ -1196,7 +1216,7 @@ pub struct FuncData {
impl FuncData {
#[must_use]
pub fn local_data(&self) -> &[(u32, ValType)] {
pub fn local_data(&self) -> &[ValType] {
&self.local_data
}

20
wasm-ast/src/stack.rs
View File

@ -1,7 +1,7 @@
use std::{collections::HashSet, ops::Range};
use std::collections::HashSet;
use crate::node::{
Align, Expression, GetGlobal, GetLocal, GetTemporary, LoadAt, SetTemporary, Statement,
Align, Expression, GetGlobal, LoadAt, Local, ResultList, SetTemporary, Statement, Temporary,
};
#[derive(Clone, Copy, PartialEq, Eq, Hash)]
@ -68,7 +68,7 @@ impl Stack {
pub fn push_with_single(&mut self, data: Expression) {
let mut read = HashSet::new();
let elem = match data {
Expression::GetLocal(GetLocal { var }) => ReadType::Local(var),
Expression::GetLocal(Local { var }) => ReadType::Local(var),
Expression::GetGlobal(GetGlobal { var }) => ReadType::Global(var),
Expression::LoadAt(LoadAt { memory, .. }) => ReadType::Memory(memory),
_ => unreachable!(),
@ -94,19 +94,23 @@ impl Stack {
self.var_list.drain(desired..).map(|v| v.data)
}
pub fn push_temporary(&mut self, num: usize) -> Range<usize> {
pub fn push_temporaries(&mut self, num: usize) -> ResultList {
let start = self.previous + self.len();
let range = start..start + num;
self.capacity = self.capacity.max(range.end);
for var in range.clone() {
let data = Expression::GetTemporary(GetTemporary { var });
let data = Expression::GetTemporary(Temporary { var });
self.push(data);
}
range
ResultList::new(range.start, range.end)
}
pub fn push_temporary(&mut self) -> Temporary {
self.push_temporaries(1).iter().next().unwrap()
}
// Return the alignment necessary for this block to branch out to a
@ -136,9 +140,9 @@ impl Stack {
old.read.clear();
let get = Expression::GetTemporary(GetTemporary { var });
let get = Expression::GetTemporary(Temporary { var });
let set = Statement::SetTemporary(SetTemporary {
var,
var: Temporary { var },
value: std::mem::replace(&mut old.data, get).into(),
});

12
wasm-ast/src/visit.rs
View File

@ -1,15 +1,15 @@
use crate::node::{
BinOp, Block, Br, BrIf, BrTable, Call, CallIndirect, CmpOp, Expression, FuncData, GetGlobal,
GetLocal, GetTemporary, If, LoadAt, MemoryCopy, MemoryFill, MemoryGrow, MemorySize, Select,
SetGlobal, SetLocal, SetTemporary, Statement, StoreAt, Terminator, UnOp, Value,
If, LoadAt, Local, MemoryCopy, MemoryFill, MemoryGrow, MemorySize, Select, SetGlobal, SetLocal,
SetTemporary, Statement, StoreAt, Temporary, Terminator, UnOp, Value,
};
pub trait Visitor {
fn visit_select(&mut self, _: &Select) {}
fn visit_get_temporary(&mut self, _: &GetTemporary) {}
fn visit_get_temporary(&mut self, _: &Temporary) {}
fn visit_get_local(&mut self, _: &GetLocal) {}
fn visit_get_local(&mut self, _: &Local) {}
fn visit_get_global(&mut self, _: &GetGlobal) {}
@ -76,13 +76,13 @@ impl<T: Visitor> Driver<T> for Select {
}
}
impl<T: Visitor> Driver<T> for GetTemporary {
impl<T: Visitor> Driver<T> for Temporary {
fn accept(&self, visitor: &mut T) {
visitor.visit_get_temporary(self);
}
}
impl<T: Visitor> Driver<T> for GetLocal {
impl<T: Visitor> Driver<T> for Local {
fn accept(&self, visitor: &mut T) {
visitor.visit_get_local(self);
}