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Update backend-interpreter/construct.ml to avoid compile errors in the due to the changes to the type system in the reference interpreter. Stub out most of the handling of new functionality and leave TODOs so we can easily find the places to update later.
As described in the overview, relax validation so that the input and output types need only be in the same hierarchy rather than requiring that the output type be a subtype of the input type. In addition to updating the SpecTec source of truth, add notes about what the extra supertypes in the formal rules are achieving. These notes are modeled on the similar note that already exists for ref.cast_desc.
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@rossberg, the validation rules rendered in the PDF overflow into the margin on the right. Is there an easy way to fix that? |
rossberg
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Feb 2, 2026
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You can insert a pseudo premise ---- in the appropriate place, which should produce a line break between the premises. See e.g. Instr_ok/return_call_indirect.
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As described in the overview, relax validation so that the input and
output types need only be in the same hierarchy rather than requiring
that the output type be a subtype of the input type.
In addition to updating the SpecTec source of truth, add notes about
what the extra supertypes in the formal rules are achieving. These notes
are modeled on the similar note that already exists for ref.cast_desc.