Andrew Kelley efb7148a45 Sema: more union fixes
* `Module.Union.getLayout`: fixes to support components of the union
   being 0 bits.
 * Implement `@typeInfo` for unions.
 * Add missing calls to `resolveTypeFields`.
 * Fix explicitly-provided union tag types passing a `Zir.Inst.Ref`
   where an `Air.Inst.Ref` was expected. We don't have any type safety
   for this; these typess are aliases.
 * Fix explicitly-provided `union(enum)` tag Values allocated to the
   wrong arena.
2021-12-28 23:22:09 -07:00
..
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2021-12-15 17:28:48 +01:00
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2020-10-31 12:21:49 +02:00