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optimize alias to var conversion

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This commit is contained in:
Folkert 2021-12-01 18:39:45 +01:00
parent e6bec46898
commit 27269faa0b
2 changed files with 89 additions and 21 deletions
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32
compiler/types/src/subs.rs
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@ -708,6 +708,29 @@ impl Variable {
pub const fn index(&self) -> u32 {
self.0
}
pub const fn get_reserved(symbol: Symbol) -> Option<Variable> {
// Must be carefule here: the variables must in fact be in Subs
match symbol {
Symbol::NUM_I128 => Some(Variable::I128),
Symbol::NUM_I64 => Some(Variable::I64),
Symbol::NUM_I32 => Some(Variable::I32),
Symbol::NUM_I16 => Some(Variable::I16),
Symbol::NUM_I8 => Some(Variable::I8),
Symbol::NUM_U128 => Some(Variable::U128),
Symbol::NUM_U64 => Some(Variable::U64),
Symbol::NUM_U32 => Some(Variable::U32),
Symbol::NUM_U16 => Some(Variable::U16),
Symbol::NUM_U8 => Some(Variable::U8),
Symbol::NUM_NAT => Some(Variable::NAT),
Symbol::BOOL_BOOL => Some(Variable::BOOL),
_ => None,
}
}
}
impl From<Variable> for OptVariable {
@ -1012,6 +1035,8 @@ fn define_integer_types(subs: &mut Subs) {
}
impl Subs {
pub const RESULT_TAG_NAMES: SubsSlice<TagName> = SubsSlice::new(0, 2);
pub fn new() -> Self {
Self::with_capacity(0)
}
@ -1019,10 +1044,15 @@ impl Subs {
pub fn with_capacity(capacity: usize) -> Self {
let capacity = capacity.max(Variable::NUM_RESERVED_VARS);
let mut tag_names = Vec::with_capacity(32);
tag_names.push(TagName::Global("Err".into()));
tag_names.push(TagName::Global("Ok".into()));
let mut subs = Subs {
utable: UnificationTable::default(),
variables: Default::default(),
tag_names: Default::default(),
tag_names,
field_names: Default::default(),
record_fields: Default::default(),
// store an empty slice at the first position