Add the aegraph (acyclic e-graph) implementation crate. #4909
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Rebased now that #4908 has landed. |
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This PR introduces the implementation of the aegraph data structure itself, as a new crate (
cranelift-egraph).This does not include any of the Cranelift-specific use of the aegraph (language/node definitions, egraph building, and lowering out of the egraph), nor any of the rule-rewriting on the egraph. That will come in subsequent PRs.
Stacks on top of #4908.