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not so fast

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This commit is contained in:
Folkert 2021-07-21 22:17:53 +02:00
parent 564efd528a
commit 6ab90cd15d
2 changed files with 14 additions and 7 deletions
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9
compiler/unify/src/unify.rs
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@ -455,7 +455,14 @@ fn unify_tag_union(
(Some(v1), Some(_v2)) => Some(v1),
};
if tags1.len() == 1 && tags2.len() == 1 && tags1 == tags2 {
// heuristic: our closure defunctionalization scheme generates a bunch of one-tag unions
// also our number types fall in this category too.
if tags1.len() == 1
&& tags2.len() == 1
&& tags1 == tags2
&& subs.get_content_without_compacting(rec1.ext)
== subs.get_content_without_compacting(rec2.ext)
{
return unify_shared_tags_merge(subs, ctx, tags1, rec1.ext, recursion_var);
}