Dialect/EVM: split opcode frontend + executable interpreter from meta theory - #39
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chriseth merged 1 commit intoJul 27, 2026
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…theory Blanket `import Mathlib` in `Dialect/EVM.lean` forced the entire Mathlib library onto the import path of anything using the EVM dialect — including a compiler executable that only needs to build/run the dialect, not reason about it. Statically linking Mathlib made a downstream `yulc` binary ~158 MB. Split the module three ways along the Mathlib boundary: * `Dialect/EVMOp.lean` — opcode enum `Op`, `U256`, `opName`/`parse`/`mkCall`, `litValue`/`litWF`, `effects`. Mathlib-free (builds in 13 jobs). * `Dialect/EVMExec.lean` — the executable interpreter: `EvmState`, `stepOp`, state helpers, and the `evm`/`evmWithExternal`/`exec` dialect instances. Mathlib-free (14 jobs); imports EVMOp. * `Dialect/EVM.lean` — metatheory only (`effects_sound`, `exec_lawful`, `@[simp]` state lemmas, worked examples). Imports EVMExec + Mathlib. Purely additive: `import YulSemantics.Dialect.EVM` still re-exports the whole `YulSemantics.EVM` namespace, so every existing downstream module builds unchanged. Downstream code that wants a Mathlib-free path can now import `Dialect.EVMExec` (interpreter) or `Dialect.EVMOp` (opcodes) instead. Full library builds; no proof content changed. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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import MathlibinDialect/EVM.leanforced the entire Mathlib library onto the import path of anything using the EVM dialect — including a compiler executable that only needs to build/run the dialect, not reason about it. Statically linking Mathlib madeyulc~158 MB.Split the module three ways along the Mathlib boundary:
Dialect/EVMOp.lean— opcode enumOp,U256,opName/parse/mkCall,litValue/litWF,effects. Mathlib-free (builds in 13 jobs).Dialect/EVMExec.lean— the executable interpreter:EvmState,stepOp,state helpers, and the
evm/evmWithExternal/execdialect instances.Mathlib-free (14 jobs); imports EVMOp.
Dialect/EVM.lean— metatheory only (effects_sound,exec_lawful,@[simp]state lemmas, worked examples). Imports EVMExec + Mathlib.Syntax/ObjectRunnow import the lighterEVMExec(they need only the frontend/interpreter). No proof content changed; the full library still builds.