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remove SetNull from IR

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This commit is contained in:
nora 2022-04-15 23:59:50 +02:00
parent d9f163ef3a
commit 4d9648bf97
3 changed files with 13 additions and 8 deletions
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17
rust2/src/opts.rs
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@ -3,11 +3,17 @@ use crate::BumpVec;
use bumpalo::Bump;
use std::fmt::{Debug, Formatter};
#[derive(Debug, Clone)]
#[derive(Clone)]
pub struct Ir<'ir> {
pub stmts: BumpVec<'ir, Stmt<'ir>>,
}
impl Debug for Ir<'_> {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
self.stmts.fmt(f)
}
}
#[derive(Clone)]
pub struct Stmt<'ir> {
pub kind: StmtKind<'ir>,
@ -26,7 +32,7 @@ impl<'ir> Stmt<'ir> {
impl Debug for Stmt<'_> {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
f.debug_tuple("Stmt").field(&self.kind).finish()
self.kind.fmt(f)
}
}
@ -39,7 +45,6 @@ pub enum StmtKind<'ir> {
Loop(Ir<'ir>),
Out,
In,
SetNull,
SetN(u8),
}
@ -143,7 +148,7 @@ fn pass_find_set_null(ir: &mut Ir<'_>) {
span,
}] = body.stmts.as_slice()
{
*stmt = Stmt::new(StmtKind::SetNull, *span);
*stmt = Stmt::new(StmtKind::SetN(0), *span);
} else {
pass_find_set_null(body);
}
@ -151,7 +156,7 @@ fn pass_find_set_null(ir: &mut Ir<'_>) {
}
}
/// pass that replaces `SetNull Add(5)` with `SetN(5)`
/// pass that replaces `SetN(0) Add(5)` with `SetN(5)`
fn pass_set_n(ir: &mut Ir<'_>) {
let stmts = &mut ir.stmts;
for i in 0..stmts.len() {
@ -165,7 +170,7 @@ fn pass_set_n(ir: &mut Ir<'_>) {
}
let a = &stmts[i];
if let StmtKind::SetNull = a.kind() {
if let StmtKind::SetN(0) = a.kind() {
let b = &stmts[i + 1];
let new = match b.kind() {
StmtKind::Add(n) => StmtKind::SetN(*n),