forked from OSchip/llvm-project
[PM] Lift the majority of the template boilerplate used to implement the
concept-based polymorphism in the pass manager to a separate header. I got feedback from someone reading the code and trying to use it that this was really making it hard to dive in and start using these APIs and that makes a lot of sense. This only requires a moderate amount of gymnastics to separate in this way, namely rinsing the PreservedAnalysis object through a template argument in a few places so that it is dependent and we only examine it on instantiation. llvm-svn: 225094
This commit is contained in:
Chandler Carruth
parent
5640ae48db
commit
2ad2a8b943
|
|
@ -43,6 +43,7 @@
|
|||
#include "llvm/ADT/SmallPtrSet.h"
|
||||
#include "llvm/IR/Function.h"
|
||||
#include "llvm/IR/Module.h"
|
||||
#include "llvm/IR/PassManagerInternals.h"
|
||||
#include "llvm/Support/type_traits.h"
|
||||
#include <list>
|
||||
#include <memory>
|
||||
|
|
@ -152,312 +153,6 @@ private:
|
|||
SmallPtrSet<void *, 2> PreservedPassIDs;
|
||||
};
|
||||
|
||||
/// \brief Implementation details of the pass manager interfaces.
|
||||
namespace detail {
|
||||
|
||||
/// \brief Template for the abstract base class used to dispatch
|
||||
/// polymorphically over pass objects.
|
||||
template <typename IRUnitT, typename AnalysisManagerT> struct PassConcept {
|
||||
// Boiler plate necessary for the container of derived classes.
|
||||
virtual ~PassConcept() {}
|
||||
|
||||
/// \brief The polymorphic API which runs the pass over a given IR entity.
|
||||
///
|
||||
/// Note that actual pass object can omit the analysis manager argument if
|
||||
/// desired. Also that the analysis manager may be null if there is no
|
||||
/// analysis manager in the pass pipeline.
|
||||
virtual PreservedAnalyses run(IRUnitT IR, AnalysisManagerT *AM) = 0;
|
||||
|
||||
/// \brief Polymorphic method to access the name of a pass.
|
||||
virtual StringRef name() = 0;
|
||||
};
|
||||
|
||||
/// \brief SFINAE metafunction for computing whether \c PassT has a run method
|
||||
/// accepting an \c AnalysisManagerT.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
typename ResultT>
|
||||
class PassRunAcceptsAnalysisManager {
|
||||
typedef char SmallType;
|
||||
struct BigType {
|
||||
char a, b;
|
||||
};
|
||||
|
||||
template <typename T, ResultT (T::*)(IRUnitT, AnalysisManagerT *)>
|
||||
struct Checker;
|
||||
|
||||
template <typename T> static SmallType f(Checker<T, &T::run> *);
|
||||
template <typename T> static BigType f(...);
|
||||
|
||||
public:
|
||||
enum { Value = sizeof(f<PassT>(nullptr)) == sizeof(SmallType) };
|
||||
};
|
||||
|
||||
/// \brief A template wrapper used to implement the polymorphic API.
|
||||
///
|
||||
/// Can be instantiated for any object which provides a \c run method accepting
|
||||
/// an \c IRUnitT. It requires the pass to be a copyable object. When the
|
||||
/// \c run method also accepts an \c AnalysisManagerT*, we pass it along.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
bool AcceptsAnalysisManager = PassRunAcceptsAnalysisManager<
|
||||
IRUnitT, AnalysisManagerT, PassT, PreservedAnalyses>::Value>
|
||||
struct PassModel;
|
||||
|
||||
/// \brief Specialization of \c PassModel for passes that accept an analyis
|
||||
/// manager.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT>
|
||||
struct PassModel<IRUnitT, AnalysisManagerT, PassT, true>
|
||||
: PassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit PassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
PassModel(const PassModel &Arg) : Pass(Arg.Pass) {}
|
||||
PassModel(PassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(PassModel &LHS, PassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
PassModel &operator=(PassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
PreservedAnalyses run(IRUnitT IR, AnalysisManagerT *AM) override {
|
||||
return Pass.run(IR, AM);
|
||||
}
|
||||
StringRef name() override { return PassT::name(); }
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
/// \brief Specialization of \c PassModel for passes that accept an analyis
|
||||
/// manager.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT>
|
||||
struct PassModel<IRUnitT, AnalysisManagerT, PassT, false>
|
||||
: PassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit PassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
PassModel(const PassModel &Arg) : Pass(Arg.Pass) {}
|
||||
PassModel(PassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(PassModel &LHS, PassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
PassModel &operator=(PassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
PreservedAnalyses run(IRUnitT IR, AnalysisManagerT *AM) override {
|
||||
return Pass.run(IR);
|
||||
}
|
||||
StringRef name() override { return PassT::name(); }
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
/// \brief Abstract concept of an analysis result.
|
||||
///
|
||||
/// This concept is parameterized over the IR unit that this result pertains
|
||||
/// to.
|
||||
template <typename IRUnitT> struct AnalysisResultConcept {
|
||||
virtual ~AnalysisResultConcept() {}
|
||||
|
||||
/// \brief Method to try and mark a result as invalid.
|
||||
///
|
||||
/// When the outer analysis manager detects a change in some underlying
|
||||
/// unit of the IR, it will call this method on all of the results cached.
|
||||
///
|
||||
/// This method also receives a set of preserved analyses which can be used
|
||||
/// to avoid invalidation because the pass which changed the underlying IR
|
||||
/// took care to update or preserve the analysis result in some way.
|
||||
///
|
||||
/// \returns true if the result is indeed invalid (the default).
|
||||
virtual bool invalidate(IRUnitT IR, const PreservedAnalyses &PA) = 0;
|
||||
};
|
||||
|
||||
/// \brief SFINAE metafunction for computing whether \c ResultT provides an
|
||||
/// \c invalidate member function.
|
||||
template <typename IRUnitT, typename ResultT> class ResultHasInvalidateMethod {
|
||||
typedef char SmallType;
|
||||
struct BigType {
|
||||
char a, b;
|
||||
};
|
||||
|
||||
template <typename T, bool (T::*)(IRUnitT, const PreservedAnalyses &)>
|
||||
struct Checker;
|
||||
|
||||
template <typename T> static SmallType f(Checker<T, &T::invalidate> *);
|
||||
template <typename T> static BigType f(...);
|
||||
|
||||
public:
|
||||
enum { Value = sizeof(f<ResultT>(nullptr)) == sizeof(SmallType) };
|
||||
};
|
||||
|
||||
/// \brief Wrapper to model the analysis result concept.
|
||||
///
|
||||
/// By default, this will implement the invalidate method with a trivial
|
||||
/// implementation so that the actual analysis result doesn't need to provide
|
||||
/// an invalidation handler. It is only selected when the invalidation handler
|
||||
/// is not part of the ResultT's interface.
|
||||
template <typename IRUnitT, typename PassT, typename ResultT,
|
||||
bool HasInvalidateHandler =
|
||||
ResultHasInvalidateMethod<IRUnitT, ResultT>::Value>
|
||||
struct AnalysisResultModel;
|
||||
|
||||
/// \brief Specialization of \c AnalysisResultModel which provides the default
|
||||
/// invalidate functionality.
|
||||
template <typename IRUnitT, typename PassT, typename ResultT>
|
||||
struct AnalysisResultModel<IRUnitT, PassT, ResultT, false>
|
||||
: AnalysisResultConcept<IRUnitT> {
|
||||
explicit AnalysisResultModel(ResultT Result) : Result(std::move(Result)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisResultModel(const AnalysisResultModel &Arg) : Result(Arg.Result) {}
|
||||
AnalysisResultModel(AnalysisResultModel &&Arg)
|
||||
: Result(std::move(Arg.Result)) {}
|
||||
friend void swap(AnalysisResultModel &LHS, AnalysisResultModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Result, RHS.Result);
|
||||
}
|
||||
AnalysisResultModel &operator=(AnalysisResultModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
/// \brief The model bases invalidation solely on being in the preserved set.
|
||||
//
|
||||
// FIXME: We should actually use two different concepts for analysis results
|
||||
// rather than two different models, and avoid the indirect function call for
|
||||
// ones that use the trivial behavior.
|
||||
bool invalidate(IRUnitT, const PreservedAnalyses &PA) override {
|
||||
return !PA.preserved(PassT::ID());
|
||||
}
|
||||
|
||||
ResultT Result;
|
||||
};
|
||||
|
||||
/// \brief Specialization of \c AnalysisResultModel which delegates invalidate
|
||||
/// handling to \c ResultT.
|
||||
template <typename IRUnitT, typename PassT, typename ResultT>
|
||||
struct AnalysisResultModel<IRUnitT, PassT, ResultT, true>
|
||||
: AnalysisResultConcept<IRUnitT> {
|
||||
explicit AnalysisResultModel(ResultT Result) : Result(std::move(Result)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisResultModel(const AnalysisResultModel &Arg) : Result(Arg.Result) {}
|
||||
AnalysisResultModel(AnalysisResultModel &&Arg)
|
||||
: Result(std::move(Arg.Result)) {}
|
||||
friend void swap(AnalysisResultModel &LHS, AnalysisResultModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Result, RHS.Result);
|
||||
}
|
||||
AnalysisResultModel &operator=(AnalysisResultModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
/// \brief The model delegates to the \c ResultT method.
|
||||
bool invalidate(IRUnitT IR, const PreservedAnalyses &PA) override {
|
||||
return Result.invalidate(IR, PA);
|
||||
}
|
||||
|
||||
ResultT Result;
|
||||
};
|
||||
|
||||
/// \brief Abstract concept of an analysis pass.
|
||||
///
|
||||
/// This concept is parameterized over the IR unit that it can run over and
|
||||
/// produce an analysis result.
|
||||
template <typename IRUnitT, typename AnalysisManagerT>
|
||||
struct AnalysisPassConcept {
|
||||
virtual ~AnalysisPassConcept() {}
|
||||
|
||||
/// \brief Method to run this analysis over a unit of IR.
|
||||
/// \returns A unique_ptr to the analysis result object to be queried by
|
||||
/// users.
|
||||
virtual std::unique_ptr<AnalysisResultConcept<IRUnitT>>
|
||||
run(IRUnitT IR, AnalysisManagerT *AM) = 0;
|
||||
};
|
||||
|
||||
/// \brief Wrapper to model the analysis pass concept.
|
||||
///
|
||||
/// Can wrap any type which implements a suitable \c run method. The method
|
||||
/// must accept the IRUnitT as an argument and produce an object which can be
|
||||
/// wrapped in a \c AnalysisResultModel.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
bool AcceptsAnalysisManager = PassRunAcceptsAnalysisManager<
|
||||
IRUnitT, AnalysisManagerT, PassT, typename PassT::Result>::Value>
|
||||
struct AnalysisPassModel;
|
||||
|
||||
/// \brief Specialization of \c AnalysisPassModel which passes an
|
||||
/// \c AnalysisManager to PassT's run method.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT>
|
||||
struct AnalysisPassModel<IRUnitT, AnalysisManagerT, PassT, true>
|
||||
: AnalysisPassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit AnalysisPassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisPassModel(const AnalysisPassModel &Arg) : Pass(Arg.Pass) {}
|
||||
AnalysisPassModel(AnalysisPassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(AnalysisPassModel &LHS, AnalysisPassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
AnalysisPassModel &operator=(AnalysisPassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
// FIXME: Replace PassT::Result with type traits when we use C++11.
|
||||
typedef AnalysisResultModel<IRUnitT, PassT, typename PassT::Result>
|
||||
ResultModelT;
|
||||
|
||||
/// \brief The model delegates to the \c PassT::run method.
|
||||
///
|
||||
/// The return is wrapped in an \c AnalysisResultModel.
|
||||
std::unique_ptr<AnalysisResultConcept<IRUnitT>>
|
||||
run(IRUnitT IR, AnalysisManagerT *AM) override {
|
||||
return make_unique<ResultModelT>(Pass.run(IR, AM));
|
||||
}
|
||||
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
/// \brief Specialization of \c AnalysisPassModel which does not pass an
|
||||
/// \c AnalysisManager to PassT's run method.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT>
|
||||
struct AnalysisPassModel<IRUnitT, AnalysisManagerT, PassT, false>
|
||||
: AnalysisPassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit AnalysisPassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisPassModel(const AnalysisPassModel &Arg) : Pass(Arg.Pass) {}
|
||||
AnalysisPassModel(AnalysisPassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(AnalysisPassModel &LHS, AnalysisPassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
AnalysisPassModel &operator=(AnalysisPassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
// FIXME: Replace PassT::Result with type traits when we use C++11.
|
||||
typedef AnalysisResultModel<IRUnitT, PassT, typename PassT::Result>
|
||||
ResultModelT;
|
||||
|
||||
/// \brief The model delegates to the \c PassT::run method.
|
||||
///
|
||||
/// The return is wrapped in an \c AnalysisResultModel.
|
||||
std::unique_ptr<AnalysisResultConcept<IRUnitT>>
|
||||
run(IRUnitT IR, AnalysisManagerT *) override {
|
||||
return make_unique<ResultModelT>(Pass.run(IR));
|
||||
}
|
||||
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
} // End namespace detail
|
||||
|
||||
class ModuleAnalysisManager;
|
||||
|
||||
class ModulePassManager {
|
||||
|
|
|
|||
|
|
@ -0,0 +1,342 @@
|
|||
//===- PassManager internal APIs and implementation details -----*- C++ -*-===//
|
||||
//
|
||||
// The LLVM Compiler Infrastructure
|
||||
//
|
||||
// This file is distributed under the University of Illinois Open Source
|
||||
// License. See LICENSE.TXT for details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
/// \file
|
||||
///
|
||||
/// This header provides internal APIs and implementation details used by the
|
||||
/// pass management interfaces exposed in PassManager.h. To understand more
|
||||
/// context of why these particular interfaces are needed, see that header
|
||||
/// file. None of these APIs should be used elsewhere.
|
||||
///
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#ifndef LLVM_IR_PASSMANAGERINTERNAL_H
|
||||
#define LLVM_IR_PASSMANAGERINTERNAL_H
|
||||
|
||||
#include "llvm/ADT/StringRef.h"
|
||||
|
||||
namespace llvm {
|
||||
|
||||
class Function;
|
||||
class Module;
|
||||
class PreservedAnalyses;
|
||||
|
||||
/// \brief Implementation details of the pass manager interfaces.
|
||||
namespace detail {
|
||||
|
||||
/// \brief Template for the abstract base class used to dispatch
|
||||
/// polymorphically over pass objects.
|
||||
template <typename IRUnitT, typename AnalysisManagerT> struct PassConcept {
|
||||
// Boiler plate necessary for the container of derived classes.
|
||||
virtual ~PassConcept() {}
|
||||
|
||||
/// \brief The polymorphic API which runs the pass over a given IR entity.
|
||||
///
|
||||
/// Note that actual pass object can omit the analysis manager argument if
|
||||
/// desired. Also that the analysis manager may be null if there is no
|
||||
/// analysis manager in the pass pipeline.
|
||||
virtual PreservedAnalyses run(IRUnitT IR, AnalysisManagerT *AM) = 0;
|
||||
|
||||
/// \brief Polymorphic method to access the name of a pass.
|
||||
virtual StringRef name() = 0;
|
||||
};
|
||||
|
||||
/// \brief SFINAE metafunction for computing whether \c PassT has a run method
|
||||
/// accepting an \c AnalysisManagerT.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
typename ResultT>
|
||||
class PassRunAcceptsAnalysisManager {
|
||||
typedef char SmallType;
|
||||
struct BigType {
|
||||
char a, b;
|
||||
};
|
||||
|
||||
template <typename T, ResultT (T::*)(IRUnitT, AnalysisManagerT *)>
|
||||
struct Checker;
|
||||
|
||||
template <typename T> static SmallType f(Checker<T, &T::run> *);
|
||||
template <typename T> static BigType f(...);
|
||||
|
||||
public:
|
||||
enum { Value = sizeof(f<PassT>(nullptr)) == sizeof(SmallType) };
|
||||
};
|
||||
|
||||
/// \brief A template wrapper used to implement the polymorphic API.
|
||||
///
|
||||
/// Can be instantiated for any object which provides a \c run method accepting
|
||||
/// an \c IRUnitT. It requires the pass to be a copyable object. When the
|
||||
/// \c run method also accepts an \c AnalysisManagerT*, we pass it along.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
typename PreservedAnalysesT = PreservedAnalyses,
|
||||
bool AcceptsAnalysisManager = PassRunAcceptsAnalysisManager<
|
||||
IRUnitT, AnalysisManagerT, PassT, PreservedAnalysesT>::Value>
|
||||
struct PassModel;
|
||||
|
||||
/// \brief Specialization of \c PassModel for passes that accept an analyis
|
||||
/// manager.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
typename PreservedAnalysesT>
|
||||
struct PassModel<IRUnitT, AnalysisManagerT, PassT, PreservedAnalysesT, true>
|
||||
: PassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit PassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
PassModel(const PassModel &Arg) : Pass(Arg.Pass) {}
|
||||
PassModel(PassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(PassModel &LHS, PassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
PassModel &operator=(PassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
PreservedAnalysesT run(IRUnitT IR, AnalysisManagerT *AM) override {
|
||||
return Pass.run(IR, AM);
|
||||
}
|
||||
StringRef name() override { return PassT::name(); }
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
/// \brief Specialization of \c PassModel for passes that accept an analyis
|
||||
/// manager.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
typename PreservedAnalysesT>
|
||||
struct PassModel<IRUnitT, AnalysisManagerT, PassT, PreservedAnalysesT, false>
|
||||
: PassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit PassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
PassModel(const PassModel &Arg) : Pass(Arg.Pass) {}
|
||||
PassModel(PassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(PassModel &LHS, PassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
PassModel &operator=(PassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
PreservedAnalysesT run(IRUnitT IR, AnalysisManagerT *AM) override {
|
||||
return Pass.run(IR);
|
||||
}
|
||||
StringRef name() override { return PassT::name(); }
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
/// \brief Abstract concept of an analysis result.
|
||||
///
|
||||
/// This concept is parameterized over the IR unit that this result pertains
|
||||
/// to.
|
||||
template <typename IRUnitT> struct AnalysisResultConcept {
|
||||
virtual ~AnalysisResultConcept() {}
|
||||
|
||||
/// \brief Method to try and mark a result as invalid.
|
||||
///
|
||||
/// When the outer analysis manager detects a change in some underlying
|
||||
/// unit of the IR, it will call this method on all of the results cached.
|
||||
///
|
||||
/// This method also receives a set of preserved analyses which can be used
|
||||
/// to avoid invalidation because the pass which changed the underlying IR
|
||||
/// took care to update or preserve the analysis result in some way.
|
||||
///
|
||||
/// \returns true if the result is indeed invalid (the default).
|
||||
virtual bool invalidate(IRUnitT IR, const PreservedAnalyses &PA) = 0;
|
||||
};
|
||||
|
||||
/// \brief SFINAE metafunction for computing whether \c ResultT provides an
|
||||
/// \c invalidate member function.
|
||||
template <typename IRUnitT, typename ResultT> class ResultHasInvalidateMethod {
|
||||
typedef char SmallType;
|
||||
struct BigType {
|
||||
char a, b;
|
||||
};
|
||||
|
||||
template <typename T, bool (T::*)(IRUnitT, const PreservedAnalyses &)>
|
||||
struct Checker;
|
||||
|
||||
template <typename T> static SmallType f(Checker<T, &T::invalidate> *);
|
||||
template <typename T> static BigType f(...);
|
||||
|
||||
public:
|
||||
enum { Value = sizeof(f<ResultT>(nullptr)) == sizeof(SmallType) };
|
||||
};
|
||||
|
||||
/// \brief Wrapper to model the analysis result concept.
|
||||
///
|
||||
/// By default, this will implement the invalidate method with a trivial
|
||||
/// implementation so that the actual analysis result doesn't need to provide
|
||||
/// an invalidation handler. It is only selected when the invalidation handler
|
||||
/// is not part of the ResultT's interface.
|
||||
template <typename IRUnitT, typename PassT, typename ResultT,
|
||||
typename PreservedAnalysesT = PreservedAnalyses,
|
||||
bool HasInvalidateHandler =
|
||||
ResultHasInvalidateMethod<IRUnitT, ResultT>::Value>
|
||||
struct AnalysisResultModel;
|
||||
|
||||
/// \brief Specialization of \c AnalysisResultModel which provides the default
|
||||
/// invalidate functionality.
|
||||
template <typename IRUnitT, typename PassT, typename ResultT,
|
||||
typename PreservedAnalysesT>
|
||||
struct AnalysisResultModel<IRUnitT, PassT, ResultT, PreservedAnalysesT, false>
|
||||
: AnalysisResultConcept<IRUnitT> {
|
||||
explicit AnalysisResultModel(ResultT Result) : Result(std::move(Result)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisResultModel(const AnalysisResultModel &Arg) : Result(Arg.Result) {}
|
||||
AnalysisResultModel(AnalysisResultModel &&Arg)
|
||||
: Result(std::move(Arg.Result)) {}
|
||||
friend void swap(AnalysisResultModel &LHS, AnalysisResultModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Result, RHS.Result);
|
||||
}
|
||||
AnalysisResultModel &operator=(AnalysisResultModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
/// \brief The model bases invalidation solely on being in the preserved set.
|
||||
//
|
||||
// FIXME: We should actually use two different concepts for analysis results
|
||||
// rather than two different models, and avoid the indirect function call for
|
||||
// ones that use the trivial behavior.
|
||||
bool invalidate(IRUnitT, const PreservedAnalysesT &PA) override {
|
||||
return !PA.preserved(PassT::ID());
|
||||
}
|
||||
|
||||
ResultT Result;
|
||||
};
|
||||
|
||||
/// \brief Specialization of \c AnalysisResultModel which delegates invalidate
|
||||
/// handling to \c ResultT.
|
||||
template <typename IRUnitT, typename PassT, typename ResultT,
|
||||
typename PreservedAnalysesT>
|
||||
struct AnalysisResultModel<IRUnitT, PassT, ResultT, PreservedAnalysesT, true>
|
||||
: AnalysisResultConcept<IRUnitT> {
|
||||
explicit AnalysisResultModel(ResultT Result) : Result(std::move(Result)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisResultModel(const AnalysisResultModel &Arg) : Result(Arg.Result) {}
|
||||
AnalysisResultModel(AnalysisResultModel &&Arg)
|
||||
: Result(std::move(Arg.Result)) {}
|
||||
friend void swap(AnalysisResultModel &LHS, AnalysisResultModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Result, RHS.Result);
|
||||
}
|
||||
AnalysisResultModel &operator=(AnalysisResultModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
/// \brief The model delegates to the \c ResultT method.
|
||||
bool invalidate(IRUnitT IR, const PreservedAnalysesT &PA) override {
|
||||
return Result.invalidate(IR, PA);
|
||||
}
|
||||
|
||||
ResultT Result;
|
||||
};
|
||||
|
||||
/// \brief Abstract concept of an analysis pass.
|
||||
///
|
||||
/// This concept is parameterized over the IR unit that it can run over and
|
||||
/// produce an analysis result.
|
||||
template <typename IRUnitT, typename AnalysisManagerT>
|
||||
struct AnalysisPassConcept {
|
||||
virtual ~AnalysisPassConcept() {}
|
||||
|
||||
/// \brief Method to run this analysis over a unit of IR.
|
||||
/// \returns A unique_ptr to the analysis result object to be queried by
|
||||
/// users.
|
||||
virtual std::unique_ptr<AnalysisResultConcept<IRUnitT>>
|
||||
run(IRUnitT IR, AnalysisManagerT *AM) = 0;
|
||||
};
|
||||
|
||||
/// \brief Wrapper to model the analysis pass concept.
|
||||
///
|
||||
/// Can wrap any type which implements a suitable \c run method. The method
|
||||
/// must accept the IRUnitT as an argument and produce an object which can be
|
||||
/// wrapped in a \c AnalysisResultModel.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT,
|
||||
bool AcceptsAnalysisManager = PassRunAcceptsAnalysisManager<
|
||||
IRUnitT, AnalysisManagerT, PassT, typename PassT::Result>::Value>
|
||||
struct AnalysisPassModel;
|
||||
|
||||
/// \brief Specialization of \c AnalysisPassModel which passes an
|
||||
/// \c AnalysisManager to PassT's run method.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT>
|
||||
struct AnalysisPassModel<IRUnitT, AnalysisManagerT, PassT, true>
|
||||
: AnalysisPassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit AnalysisPassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisPassModel(const AnalysisPassModel &Arg) : Pass(Arg.Pass) {}
|
||||
AnalysisPassModel(AnalysisPassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(AnalysisPassModel &LHS, AnalysisPassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
AnalysisPassModel &operator=(AnalysisPassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
// FIXME: Replace PassT::Result with type traits when we use C++11.
|
||||
typedef AnalysisResultModel<IRUnitT, PassT, typename PassT::Result>
|
||||
ResultModelT;
|
||||
|
||||
/// \brief The model delegates to the \c PassT::run method.
|
||||
///
|
||||
/// The return is wrapped in an \c AnalysisResultModel.
|
||||
std::unique_ptr<AnalysisResultConcept<IRUnitT>>
|
||||
run(IRUnitT IR, AnalysisManagerT *AM) override {
|
||||
return make_unique<ResultModelT>(Pass.run(IR, AM));
|
||||
}
|
||||
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
/// \brief Specialization of \c AnalysisPassModel which does not pass an
|
||||
/// \c AnalysisManager to PassT's run method.
|
||||
template <typename IRUnitT, typename AnalysisManagerT, typename PassT>
|
||||
struct AnalysisPassModel<IRUnitT, AnalysisManagerT, PassT, false>
|
||||
: AnalysisPassConcept<IRUnitT, AnalysisManagerT> {
|
||||
explicit AnalysisPassModel(PassT Pass) : Pass(std::move(Pass)) {}
|
||||
// We have to explicitly define all the special member functions because MSVC
|
||||
// refuses to generate them.
|
||||
AnalysisPassModel(const AnalysisPassModel &Arg) : Pass(Arg.Pass) {}
|
||||
AnalysisPassModel(AnalysisPassModel &&Arg) : Pass(std::move(Arg.Pass)) {}
|
||||
friend void swap(AnalysisPassModel &LHS, AnalysisPassModel &RHS) {
|
||||
using std::swap;
|
||||
swap(LHS.Pass, RHS.Pass);
|
||||
}
|
||||
AnalysisPassModel &operator=(AnalysisPassModel RHS) {
|
||||
swap(*this, RHS);
|
||||
return *this;
|
||||
}
|
||||
|
||||
// FIXME: Replace PassT::Result with type traits when we use C++11.
|
||||
typedef AnalysisResultModel<IRUnitT, PassT, typename PassT::Result>
|
||||
ResultModelT;
|
||||
|
||||
/// \brief The model delegates to the \c PassT::run method.
|
||||
///
|
||||
/// The return is wrapped in an \c AnalysisResultModel.
|
||||
std::unique_ptr<AnalysisResultConcept<IRUnitT>>
|
||||
run(IRUnitT IR, AnalysisManagerT *) override {
|
||||
return make_unique<ResultModelT>(Pass.run(IR));
|
||||
}
|
||||
|
||||
PassT Pass;
|
||||
};
|
||||
|
||||
} // End namespace detail
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue