Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
422920f643
This PR adds an experimental tactic `mvcgen'` that will soon replace `mvcgen`. It has been reimplemented from the ground up using the new `SymM`-based framework for efficient symbolic evaluation and can outperform `mvcgen` by a factor of >100x for some synthetic benchmarks. `mvcgen'` aspires to be feature-complete with `mvcgen`. Known exceptions currently are join point sharing, introduction of local specs and smaller bugs. The implementation of `mvgen'` used to live in the benchmark suite for rapid prototyping; this commit merely moves it into the Lean toolchain. Doing so results in an build time instruction count increase in seemingly unrelated tests such as `elab/delayed_assign//instructions`; the reason is that the builtin elaborator attribute now pulls in substantially more import code on startup. --------- Co-authored-by: Sebastian Graf <sg@lean-fro.org> |
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