26f6bc67ee
This PR shifts the conversion from LCNF mono to lambda pure into the LCNF impure phase. This is preparatory work for the upcoming refactor of IR into LCNF impure. The LCNF impure phase differs from the other LCNF phases in two crucial ways: 1. I decided to have `Decl.type` be the result type as opposed to an arrows from the parameter types to the result type. This is done because impure does not have a notion of arrows anymore so keeping them around for this one particular purpose would be slightly odd. 2. In order to avoid cluttering up the olean size LCNF impure saves only the signature persistently to the disk. This is possible because we no longer have inlining/specialization at this point of compilation so all we need is typing information (and potentially other environment extensions) to guide our analyses.
58 lines
2.4 KiB
Text
58 lines
2.4 KiB
Text
import Lean
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/-- `erased α` is the same as `α`, except that the elements
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of `erased α` are erased in the VM in the same way as types
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and proofs. This can be used to track data without storing it
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literally. -/
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def Erased (α : Sort u) : Sort max 1 u :=
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Σ's : α → Prop, ∃ a, (fun b => a = b) = s
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namespace Erased
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/-- Erase a value. -/
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@[inline]
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def mk {α} (a : α) : Erased α :=
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⟨fun b => a = b, a, rfl⟩
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open Lean.Compiler
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set_option pp.explicit true
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set_option pp.funBinderTypes true
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set_option pp.letVarTypes true
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set_option trace.Compiler.saveMono true
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/--
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trace: [Compiler.saveMono] size: 1
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def Erased.mk (α : lcErased) (a : lcAny) : PSigma lcErased lcAny :=
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let _x.1 : PSigma lcErased lcAny := PSigma.mk ◾ ◾ ◾ ◾;
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return _x.1
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---
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trace: [Compiler.saveMono] size: 5
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def _private.lean.run.erased.0._eval._lam_0 (_x.1 : Array
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Lean.Name) (_x.2 : PUnit) (_y.3 : Lean.Elab.Term.Context) (_y.4 : lcAny) (_y.5 : Lean.Meta.Context) (_y.6 : lcAny) (_y.7 : Lean.Core.Context) (_y.8 : lcAny) (_y.9 : lcVoid) : EST.Out
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Lean.Exception lcAny PUnit :=
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let _x.10 : EST.Out Lean.Exception lcAny PUnit := compile _x.1 _y.7 _y.8 _y.9;
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cases _x.10 : EST.Out Lean.Exception lcAny PUnit
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| EST.Out.ok (a.11 : PUnit) (a.12 : lcVoid) =>
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let _x.13 : EST.Out Lean.Exception lcAny PUnit := @EST.Out.ok ◾ ◾ ◾ _x.2 a.12;
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return _x.13
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| EST.Out.error (a.14 : Lean.Exception) (a.15 : lcVoid) =>
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return _x.10
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[Compiler.saveMono] size: 9
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def _private.lean.run.erased.0._eval (a.1 : Lean.Elab.Command.Context) (a.2 : lcAny) (a.3 : lcVoid) : EST.Out
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Lean.Exception lcAny PUnit :=
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let _x.4 : String := "Erased";
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let _x.5 : String := "mk";
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let _x.6 : Lean.Name := Lean.Name.mkStr2 _x.4 _x.5;
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let _x.7 : Nat := 1;
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let _x.8 : Array Lean.Name := Array.mkEmpty ◾ _x.7;
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let _x.9 : Array Lean.Name := Array.push ◾ _x.8 _x.6;
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let _x.10 : PUnit := PUnit.unit;
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let _f.11 : Lean.Elab.Term.Context →
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lcAny →
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Lean.Meta.Context →
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lcAny →
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Lean.Core.Context → lcAny → lcVoid → EST.Out Lean.Exception lcAny PUnit := _eval._lam_0.2 _x.9 _x.10;
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let _x.12 : EST.Out Lean.Exception lcAny PUnit := Lean.Elab.Command.liftTermElabM._redArg _f.11 a.1 a.2 a.3;
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return _x.12
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-/
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#guard_msgs in
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run_meta Lean.Compiler.compile #[``Erased.mk]
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