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simplify Byte layout

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This commit is contained in:
Folkert 2020-03-18 22:22:32 +01:00
parent c11f374eb0
commit 0996f264e7
8 changed files with 19 additions and 41 deletions
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13
compiler/mono/src/layout.rs
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@ -20,7 +20,7 @@ pub enum Builtin<'a> {
Int64,
Float64,
Bool,
Byte(MutMap<TagName, u8>),
Byte,
Str,
Map(&'a Layout<'a>, &'a Layout<'a>),
Set(&'a Layout<'a>),
@ -157,7 +157,7 @@ impl<'a> Builtin<'a> {
Int64 => Builtin::I64_SIZE,
Float64 => Builtin::F64_SIZE,
Bool => Builtin::BOOL_SIZE,
Byte(_) => Builtin::BYTE_SIZE,
Byte => Builtin::BYTE_SIZE,
Str | EmptyStr => Builtin::STR_WORDS * pointer_size,
Map(_, _) | EmptyMap => Builtin::MAP_WORDS * pointer_size,
Set(_) | EmptySet => Builtin::SET_WORDS * pointer_size,
@ -169,7 +169,7 @@ impl<'a> Builtin<'a> {
use Builtin::*;
match self {
Int64 | Float64 | Bool | Byte(_) | EmptyStr | EmptyMap | EmptyList | EmptySet => true,
Int64 | Float64 | Bool | Byte | EmptyStr | EmptyMap | EmptyList | EmptySet => true,
Str | Map(_, _) | Set(_) | List(_) => false,
}
}
@ -367,12 +367,7 @@ fn layout_from_flat_type<'a>(
Ok(Layout::Builtin(Builtin::Bool))
} else {
// up to 256 enum tags can be stored in a byte
let mut tag_to_u8 = MutMap::default();
for (counter, (name, _)) in tags.into_iter().enumerate() {
tag_to_u8.insert(name, counter as u8);
}
Ok(Layout::Builtin(Builtin::Byte(tag_to_u8)))
Ok(Layout::Builtin(Builtin::Byte))
}
} else {
let mut layouts = MutMap::default();