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Introduce IR #2005

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9 changes: 9 additions & 0 deletions Cargo.lock
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3 changes: 3 additions & 0 deletions Cargo.toml
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Expand Up @@ -4,6 +4,7 @@ members = [
"crates/analyzer",
"crates/emitter",
"crates/formatter",
"crates/ir",
"crates/languageserver",
"crates/mdbook",
"crates/metadata",
Expand Down Expand Up @@ -42,6 +43,8 @@ handlebars = "6.3"
log = "0.4.28"
mdbook = "0.4.51"
miette = {version = "7.6"}
num-bigint = "0.4.6"
num-traits = "0.2.19"
once_cell = "1.21"
parol_runtime = "4.0"
pulldown-cmark = "0.13.0"
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4 changes: 2 additions & 2 deletions crates/analyzer/Cargo.toml
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Expand Up @@ -18,8 +18,8 @@ daggy = "0.9.0"
fxhash = {workspace = true}
itertools = "0.14.0"
log = {workspace = true}
num-bigint = "0.4.6"
num-traits = "0.2.19"
num-bigint = {workspace = true}
num-traits = {workspace = true}
smallvec = {workspace = true}
strnum_bitwidth = {workspace = true}
thiserror = {workspace = true}
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16 changes: 16 additions & 0 deletions crates/ir/Cargo.toml
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@@ -0,0 +1,16 @@
[package]
name = "veryl-ir"
version = "0.16.5"
authors.workspace = true
repository.workspace = true
keywords.workspace = true
categories.workspace = true
license.workspace = true
readme.workspace = true
description.workspace = true
edition.workspace = true

[dependencies]
num-bigint = {workspace = true}
num-traits = {workspace = true}
veryl-parser = {version = "0.16.5", path = "../parser"}
8 changes: 8 additions & 0 deletions crates/ir/src/block.rs
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@@ -0,0 +1,8 @@
use crate::variable::{VarId, Variable};
use std::collections::HashMap;
use veryl_parser::resource_table::StrId;

pub struct Block {
name: StrId,
variables: HashMap<VarId, Variable>,
}
256 changes: 256 additions & 0 deletions crates/ir/src/expression.rs
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@@ -0,0 +1,256 @@
use crate::variable::{Value, VarId, Variable};
use num_bigint::BigUint;
use std::collections::HashMap;
use std::fmt;

pub enum Expression {
Term(Factor),
Unary(Op, Box<Expression>),
Binary(Box<Expression>, Op, Box<Expression>),
Concatenation(Vec<Expression>),
}

impl Expression {
pub fn eval(&self, context_width: Option<usize>, map: &HashMap<VarId, Variable>) -> Value {
match self {
Expression::Term(x) => match x {
Factor::Variable(x) => map.get(x).unwrap().value.clone(),
Factor::Value(x) => x.clone(),
},
Expression::Unary(op, x) => {
let mut ret = x.eval(context_width, map);
match op {
Op::BitAnd => {
ret.payload = reduction(ret.payload, ret.width, |x, y| x & y);
}
Op::BitOr => {
ret.payload = reduction(ret.payload, ret.width, |x, y| x | y);
}
Op::BitXor => {
ret.payload = reduction(ret.payload, ret.width, |x, y| x ^ y);
}
Op::BitXnor => {
ret.payload = reduction(ret.payload, ret.width, |x, y| {
((x ^ y) == 0u32.into()).into()
});
}
Op::BitNand => {
ret.payload = reduction(ret.payload, ret.width, |x, y| {
((x & y) == 0u32.into()).into()
});
}
Op::BitNor => {
ret.payload = reduction(ret.payload, ret.width, |x, y| {
((x | y) == 0u32.into()).into()
});
}
Op::BitNot => {
ret.payload = BigUint::from_slice(
&ret.payload
.to_u32_digits()
.iter()
.map(|x| !x)
.collect::<Vec<_>>(),
);
}
Op::LogicNot => {
ret.payload = (ret.payload == 0u32.into()).into();
ret.width = 1;
ret.signed = false;
}
_ => unreachable!(),
}
ret
}
Expression::Binary(x, op, y) => {
let x = x.eval(context_width, map);
let y = y.eval(context_width, map);
match op {
Op::Pow => {
let (width, payload) = binary_op(
(x.width, x.payload),
(y.width, y.payload),
context_width,
|x, _, z| x.max(z.unwrap_or(0)),
|x, y| y.try_into().map(|y| x.pow(y)).unwrap(),
);
Value {
payload,
width,
signed: false,
}
}
Op::Div => {
let (width, payload) = binary_op(
(x.width, x.payload),
(y.width, y.payload),
context_width,
|x, y, z| x.max(y).max(z.unwrap_or(0)),
|x, y| x / y,
);
Value {
payload,
width,
signed: false,
}
}
Op::Rem => {
let (width, payload) = binary_op(
(x.width, x.payload),
(y.width, y.payload),
context_width,
|x, y, z| x.max(y).max(z.unwrap_or(0)),
|x, y| x % y,
);
Value {
payload,
width,
signed: false,
}
}
Op::Mul => todo!(),
Op::Add => todo!(),
Op::Sub => todo!(),
Op::ArithShiftL => todo!(),
Op::ArithShiftR => todo!(),
Op::LogicShiftL => todo!(),
Op::LogicShiftR => todo!(),
Op::LessEq => todo!(),
Op::GreaterEq => todo!(),
Op::Less => todo!(),
Op::Greater => todo!(),
Op::Eq => todo!(),
Op::Ne => todo!(),
Op::LogicAnd => todo!(),
Op::LogicOr => todo!(),
Op::LogicNot => todo!(),
Op::BitAnd => todo!(),
Op::BitOr => todo!(),
Op::BitXor => todo!(),
Op::BitXnor => todo!(),
Op::BitNand => todo!(),
Op::BitNor => todo!(),
Op::BitNot => todo!(),
}
}
_ => todo!(),
}
}
}

fn reduction<T: Fn(BigUint, BigUint) -> BigUint>(value: BigUint, width: usize, func: T) -> BigUint {
let mut tmp = value;
let mut ret = tmp.clone() & BigUint::from(1u32);
for _ in 0..width {
tmp >>= 1;
ret = func(ret, tmp.clone() & BigUint::from(1u32));
}
ret
}

fn binary_op<T: Fn(usize, usize, Option<usize>) -> usize, U: Fn(BigUint, BigUint) -> BigUint>(
x: (usize, BigUint),
y: (usize, BigUint),
context_width: Option<usize>,
calc_width: T,
calc_value: U,
) -> (usize, BigUint) {
let width = calc_width(x.0, y.0, context_width);
let value = calc_value(x.1, y.1);
(width, value)
}

pub enum Factor {
Variable(VarId),
Value(Value),
}

pub enum Op {
/// **
Pow,
/// /
Div,
/// %
Rem,
/// *
Mul,
/// +
Add,
/// -
Sub,
/// <<<
ArithShiftL,
/// >>>
ArithShiftR,
/// <<
LogicShiftL,
/// >>
LogicShiftR,
/// <=
LessEq,
/// >=
GreaterEq,
/// <:
Less,
/// >:
Greater,
/// ==
Eq,
/// !=
Ne,
/// &&
LogicAnd,
/// ||
LogicOr,
/// !
LogicNot,
/// &
BitAnd,
/// |
BitOr,
/// ^
BitXor,
/// ~^ ^~
BitXnor,
/// ~&
BitNand,
/// ~|
BitNor,
/// ~
BitNot,
}

impl fmt::Display for Op {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let str = match self {
Op::Pow => "**",
Op::Div => "/",
Op::Rem => "%",
Op::Mul => "*",
Op::Add => "+",
Op::Sub => "-",
Op::ArithShiftL => "<<<",
Op::ArithShiftR => ">>>",
Op::LogicShiftL => "<<",
Op::LogicShiftR => ">>",
Op::LessEq => "<=",
Op::GreaterEq => ">=",
Op::Less => "<:",
Op::Greater => ">:",
Op::Eq => "==",
Op::Ne => "!=",
Op::LogicAnd => "&&",
Op::LogicOr => "||",
Op::LogicNot => "!",
Op::BitAnd => "&",
Op::BitOr => "|",
Op::BitXor => "^",
Op::BitXnor => "^~",
Op::BitNand => "~&",
Op::BitNor => "~|",
Op::BitNot => "~",
};

str.fmt(f)
}
}
3 changes: 3 additions & 0 deletions crates/ir/src/lib.rs
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@@ -0,0 +1,3 @@
mod block;
mod expression;
mod variable;
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