Primitive evaluation #1026
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Primitive evaluation #1026
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Close computational obligations with defined in erase_global_decls
improve strengthening to get cumul info on type
Compile pipeline app: applications of eta-expanded terms are preserved by the erasure pipeline. This introduces a judgment for normal forms (and neutrals), and a proof that the PCUICExpandLets transformation preserves normal forms. Also introduces a more positive `nisErasable` notion that characterizes non-erasable/relevant terms.
Transform extends split
…ers in primitives)
inductive definitions.
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This adds evaluation of primitive terms to all the evaluation relations and proves correctness of erasure and all the compilation phases, i.e. they preserve evaluation of primitives. We still do not give semantics to primitive operations though, only explicit values are handled. An array is evaluated when its default value and list of values are evaluated, cbv-style.