52b1b342ab
This PR implements zero cost `BaseIO` by erasing the `IO.RealWorld` parameter from argument lists and structures. This is a **major breaking change for FFI**. Concretely: - `BaseIO` is defined in terms of `ST IO.RealWorld` - `EIO` (and thus `IO`) is defined in terms of `EST IO.RealWorld` - The opaque `Void` type is introduced and the trivial structure optimization updated to account for it. Furthermore, arguments of type `Void s` are removed from the argument lists of the C functions. - `ST` is redefined as `Void s -> ST.Out s a` where `ST.Out` is a pair of `Void s` and `a` This together has the following major effects on our generated code: - Functions that return `BaseIO`/`ST`/`EIO`/`IO`/`EST` now do not take the dummy world parameter anymore. To account for this FFI code needs to delete the dummy world parameter from the argument lists. - Functions that return `BaseIO`/`ST` now return their wrapped value directly. In particular `BaseIO UInt32` now returns a `uint32_t` instead of a `lean_object*`. To account for this FFI code might have to change the return type and does not need to call `lean_io_result_mk_ok` anymore but can instead just `return` values right away (same with extracting values from `BaseIO` computations. - Functions that return `EIO`/`IO`/`EST` now only return the equivalent of an `Except` node which reduces the allocation size. The `lean_io_result_mk_ok`/`lean_io_result_mk_error` functions were updated to account for this already so no change is required. Besides improving performance by dropping allocation (sizes) we can now also do fun new things such as: ```lean @[extern "malloc"] opaque malloc (size : USize) : BaseIO USize ```
47 lines
1.8 KiB
Text
47 lines
1.8 KiB
Text
/-
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Copyright (c) 2022 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Leonardo de Moura
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-/
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module
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prelude
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public import Lean.Compiler.LCNF.AlphaEqv
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public import Lean.Compiler.LCNF.Basic
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public import Lean.Compiler.LCNF.Bind
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public import Lean.Compiler.LCNF.Check
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public import Lean.Compiler.LCNF.CompilerM
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public import Lean.Compiler.LCNF.CSE
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public import Lean.Compiler.LCNF.DependsOn
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public import Lean.Compiler.LCNF.ElimDead
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public import Lean.Compiler.LCNF.FixedParams
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public import Lean.Compiler.LCNF.InferType
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public import Lean.Compiler.LCNF.JoinPoints
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public import Lean.Compiler.LCNF.LCtx
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public import Lean.Compiler.LCNF.Level
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public import Lean.Compiler.LCNF.Main
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public import Lean.Compiler.LCNF.Passes
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public import Lean.Compiler.LCNF.PassManager
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public import Lean.Compiler.LCNF.PhaseExt
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public import Lean.Compiler.LCNF.PrettyPrinter
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public import Lean.Compiler.LCNF.PullFunDecls
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public import Lean.Compiler.LCNF.PullLetDecls
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public import Lean.Compiler.LCNF.ReduceJpArity
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public import Lean.Compiler.LCNF.Simp
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public import Lean.Compiler.LCNF.Specialize
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public import Lean.Compiler.LCNF.SpecInfo
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public import Lean.Compiler.LCNF.Testing
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public import Lean.Compiler.LCNF.ToDecl
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public import Lean.Compiler.LCNF.ToExpr
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public import Lean.Compiler.LCNF.ToLCNF
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public import Lean.Compiler.LCNF.Types
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public import Lean.Compiler.LCNF.Util
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public import Lean.Compiler.LCNF.ConfigOptions
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public import Lean.Compiler.LCNF.MonoTypes
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public import Lean.Compiler.LCNF.ToMono
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public import Lean.Compiler.LCNF.MonadScope
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public import Lean.Compiler.LCNF.Closure
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public import Lean.Compiler.LCNF.LambdaLifting
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public import Lean.Compiler.LCNF.ReduceArity
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public import Lean.Compiler.LCNF.Probing
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public import Lean.Compiler.LCNF.Irrelevant
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