mim::EtaRed Class Reference

Performs η-reduction. More...

#include <mim/pass/eta_red.h>

Inheritance diagram for mim::EtaRed:

Public Types
enum	Lattice {   Bot ,   Reduce ,   Irreducible }
using	Data = LamMap<Lattice>
Public Types inherited from mim::FPPass< EtaRed, Def >
using	Super
using	Data
	Default.

Public Member Functions
	EtaRed (World &world, flags_t annex)
void	apply (bool callee_only)
void	apply (const App *app) final
	Invoked if your Stage has additional args.
void	apply (Stage &s) final
	Dito, but invoked by Stage::recreate.
bool	callee_only () const
void	mark_irreducible (Lam *lam)
Public Member Functions inherited from mim::FPPass< EtaRed, Def >
	FPPass (World &world, std::string name)
	FPPass (World &world, flags_t annex)
bool	fixed_point () const override
Public Member Functions inherited from mim::RWPass< EtaRed, Def >
	RWPass (World &world, std::string name)
	RWPass (World &world, flags_t annex)
bool	inspect () const override
	Should the PassMan even consider this pass?
Def *	curr_mut () const
Public Member Functions inherited from mim::Pass
	Pass (World &world, std::string name)
	Pass (World &world, flags_t annex)
virtual void	init (PassMan *)
PassMan &	man ()
const PassMan &	man () const
size_t	index () const
virtual const Def *	rewrite (const Var *var)
virtual const Def *	rewrite (const Proxy *proxy)
virtual undo_t	analyze (const Def *)
virtual undo_t	analyze (const Proxy *)
virtual void	enter ()
	Invoked just before Pass::rewriteing PassMan::curr_mut's body.
virtual void	prepare ()
	Invoked once before entering the main rewrite loop.
const Proxy *	proxy (const Def *type, Defs ops, u32 tag=0)
const Proxy *	isa_proxy (const Def *def, u32 tag=0)
	Check whether given def is a Proxy whose Proxy::pass matches this Pass's IPass::index.
const Proxy *	as_proxy (const Def *def, u32 tag=0)
Public Member Functions inherited from mim::Stage
World &	world ()
Driver &	driver ()
Log &	log () const
std::string_view	name () const
flags_t	annex () const
	Stage (World &world, std::string name)
	Stage (World &world, flags_t annex)
virtual	~Stage ()=default
virtual std::unique_ptr< Stage >	recreate ()
	Creates a new instance; needed by a fixed-point PhaseMan.

Private Member Functions
const Def *	rewrite (const Def *) override
undo_t	analyze (const Var *) override

Additional Inherited Members
static auto	create (const Flags2Stages &stages, const Def *def)
template<class A, class P>
static void	hook (Flags2Stages &stages)
Protected Member Functions inherited from mim::FPPass< EtaRed, Def >
const auto &	states () const
auto &	states ()
auto &	data ()
auto &	data ()
auto &	data (const K &key)
	Use this for your convenience if P::Data is a map.
auto &	data (const K &key)
	Use this for your convenience if P::Data<I> is a map.
undo_t	curr_undo () const
	Current undo point.
undo_t	undo_visit (Def *mut) const
	Retrieves the point to backtrack to just before mut was seen the very first time.
undo_t	undo_enter (Def *mut) const
	Retrieves the point to backtrack to just before rewriting mut's body.
Protected Attributes inherited from mim::Stage
std::string	name_

Detailed Description

Performs η-reduction.

Rewrites λx.e x to e, whenever x does (optimistically) not appear free in e.

Definition at line 9 of file eta_red.h.

Member Typedef Documentation

Data

using mim::EtaRed::Data = LamMap<Lattice>

Definition at line 26 of file eta_red.h.

Member Enumeration Documentation

Lattice

enum mim::EtaRed::Lattice

Enumerator
Bot	Never seen.
Reduce	η-reduction performed.
Irreducible	η-reduction not possible as we stumbled upon a Var.

Definition at line 20 of file eta_red.h.

Constructor & Destructor Documentation

EtaRed()

mim::EtaRed::EtaRed ( World & world, flags_t annex )

inline

Definition at line 11 of file eta_red.h.

References mim::Stage::annex(), mim::FPPass< EtaRed, Def >::FPPass(), and mim::Stage::world().

Referenced by apply().

Member Function Documentation

analyze()

undo_t mim::EtaRed::analyze ( const Var * var )

overrideprivatevirtual

Reimplemented from mim::Pass.

Definition at line 33 of file eta_red.cpp.

References Bot, mim::FPPass< EtaRed, Def >::data(), DLOG, mim::Def::isa_mut(), mim::Var::mut(), mim::No_Undo, Reduce, and mim::FPPass< EtaRed, Def >::undo_visit().

apply() [1/3]

void mim::EtaRed::apply

(

bool

callee_only

)

Definition at line 12 of file eta_red.cpp.

References callee_only(), and mim::Stage::name_.

apply() [2/3]

void mim::EtaRed::apply ( const App * )

inlinefinalvirtual

Invoked if your Stage has additional args.

Reimplemented from mim::Stage.

Definition at line 15 of file eta_red.h.

References apply(), and mim::Lit::as().

Referenced by apply().

apply() [3/3]

void mim::EtaRed::apply ( Stage & )

inlinefinalvirtual

Dito, but invoked by Stage::recreate.

Reimplemented from mim::Stage.

Definition at line 16 of file eta_red.h.

References apply(), callee_only(), and EtaRed().

Referenced by apply().

callee_only()

bool mim::EtaRed::callee_only ( ) const

inline

Definition at line 18 of file eta_red.h.

Referenced by apply(), and apply().

mark_irreducible()

void mim::EtaRed::mark_irreducible ( Lam * lam )

inline

Definition at line 27 of file eta_red.h.

rewrite()

const Def * mim::EtaRed::rewrite ( const Def * def )

overrideprivatevirtual

Reimplemented from mim::Pass.

Definition at line 17 of file eta_red.cpp.

References mim::FPPass< EtaRed, Def >::data(), DLOG, mim::eta_rule(), mim::Def::is_set(), mim::isa_callee(), mim::Def::isa_mut(), mim::Def::num_ops(), mim::Def::op(), Reduce, and mim::Def::refine().

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The documentation for this class was generated from the following files:

• include/mim/pass/eta_red.h
• src/mim/pass/eta_red.cpp