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pattern match on single-tag tag unions

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in LLVM and crane
This commit is contained in:
Folkert 2020-03-17 19:44:59 +01:00
parent b5abed5f54
commit 6253d2d1af
4 changed files with 60 additions and 7 deletions
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4
compiler/gen/src/llvm/convert.rs
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@ -69,7 +69,7 @@ pub fn basic_type_from_layout<'ctx>(
.as_basic_type_enum()
}
Union(tags) if tags.len() == 1 => {
let (_, layouts) = tags.into_iter().next().unwrap();
let (_, layouts) = tags.iter().next().unwrap();
// Determine types
let mut field_types = Vec::with_capacity_in(layouts.len(), arena);
@ -82,7 +82,7 @@ pub fn basic_type_from_layout<'ctx>(
.struct_type(field_types.into_bump_slice(), false)
.as_basic_type_enum()
}
Union(tags) => {
Union(_) => {
// TODO make this dynamic
let ptr_size = std::mem::size_of::<i64>();
let union_size = layout.stack_size(ptr_size as u32);