/// \brief Implementation details of the pass manager interfaces.
namespace detail {
+/// \brief Helper template to run a pass *with* an optional analysis manager.
+///
+/// This accepts the address of the run method as an argument to detect that it
+/// accepts the analysis manager and pass it through. This isn't (quite)
+/// a generic optional argument invocation tool, and couldn't be without making
+/// the calling syntax significantly more verbose.
+template <typename ResultT, typename IRUnitT, typename PassT>
+ResultT invokeRunMethod(PassT &Pass,
+ ResultT (PassT::*run)(IRUnitT &,
+ AnalysisManager<IRUnitT> *),
+ IRUnitT &IR, AnalysisManager<IRUnitT> *AM) {
+ return (Pass.*run)(IR, AM);
+}
+
+/// \brief Helper template to run a pass *without* an optional analysis manager.
+///
+/// This accepts the address of the run method as an argument to detect that it
+/// does not accept an analysis manager and drop it. This isn't (quite)
+/// a generic optional argument invocation tool, and couldn't be without making
+/// the calling syntax significantly more verbose.
+template <typename ResultT, typename IRUnitT, typename PassT>
+ResultT invokeRunMethod(
+ PassT &Pass,
+ ResultT (PassT::*run)(IRUnitT &),
+ IRUnitT &IR, AnalysisManager<IRUnitT> * /*AM*/) {
+ return (Pass.*run)(IR);
+}
+
/// \brief Template for the abstract base class used to dispatch
/// polymorphically over pass objects.
-template <typename IRUnitT> struct PassConcept {
- // Boiler plate necessary for the container of derived classes.
- virtual ~PassConcept() {}
+template <typename ResultT, typename IRUnitT> struct PassConceptBase {
+ virtual ~PassConceptBase() {}
/// \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, AnalysisManager<IRUnitT> *AM) = 0;
+ virtual ResultT run(IRUnitT &IR, AnalysisManager<IRUnitT> *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 AnalysisManager<IRUnitT>.
-template <typename IRUnitT, typename PassT, typename ResultT>
-class PassRunAcceptsAnalysisManager {
- typedef char SmallType;
- struct BigType {
- char a, b;
- };
-
- template <typename T, ResultT (T::*)(IRUnitT &, AnalysisManager<IRUnitT> *)>
- 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 Abstract concept of an transform pass.
+///
+/// This concept is parameterized over the IR unit that it can run over and
+/// returns status of preserved analyses.
+template <typename IRUnitT>
+using PassConcept = PassConceptBase<PreservedAnalyses, IRUnitT>;
/// \brief A template wrapper used to implement the polymorphic API.
///
/// \c run method also accepts an \c AnalysisManager<IRUnitT>*, we pass it
/// along.
template <typename IRUnitT, typename PassT,
- typename PreservedAnalysesT = PreservedAnalyses,
- bool AcceptsAnalysisManager = PassRunAcceptsAnalysisManager<
- IRUnitT, PassT, PreservedAnalysesT>::Value>
-struct PassModel;
-
-/// \brief Specialization of \c PassModel for passes that accept an analyis
-/// manager.
-template <typename IRUnitT, typename PassT, typename PreservedAnalysesT>
-struct PassModel<IRUnitT, PassT, PreservedAnalysesT, true>
- : PassConcept<IRUnitT> {
- 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, AnalysisManager<IRUnitT> *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 PassT, typename PreservedAnalysesT>
-struct PassModel<IRUnitT, PassT, PreservedAnalysesT, false>
- : PassConcept<IRUnitT> {
+ typename PreservedAnalysesT = PreservedAnalyses>
+struct PassModel : PassConcept<IRUnitT> {
explicit PassModel(PassT Pass) : Pass(std::move(Pass)) {}
// We have to explicitly define all the special member functions because MSVC
// refuses to generate them.
return *this;
}
+ /// \brief The model delegates to the \c PassT::run method.
PreservedAnalysesT run(IRUnitT &IR, AnalysisManager<IRUnitT> *AM) override {
- return Pass.run(IR);
+ return invokeRunMethod<PreservedAnalysesT>(Pass, &PassT::run, IR, AM);
}
StringRef name() override { return PassT::name(); }
PassT Pass;
///
/// This concept is parameterized over the IR unit that it can run over and
/// produce an analysis result.
-template <typename IRUnitT> 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, AnalysisManager<IRUnitT> *AM) = 0;
-
- /// \brief Polymorphic method to access the name of a pass.
- virtual StringRef name() = 0;
-};
+template <typename IRUnitT>
+using AnalysisPassConcept =
+ PassConceptBase<std::unique_ptr<AnalysisResultConcept<IRUnitT>>, IRUnitT>;
/// \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 PassT,
- bool AcceptsAnalysisManager = PassRunAcceptsAnalysisManager<
- IRUnitT, 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 PassT>
-struct AnalysisPassModel<IRUnitT, PassT, true> : AnalysisPassConcept<IRUnitT> {
+struct AnalysisPassModel : AnalysisPassConcept<IRUnitT> {
explicit AnalysisPassModel(PassT Pass) : Pass(std::move(Pass)) {}
// We have to explicitly define all the special member functions because MSVC
// refuses to generate them.
}
// FIXME: Replace PassT::Result with type traits when we use C++11.
- typedef AnalysisResultModel<IRUnitT, PassT, typename PassT::Result>
- ResultModelT;
+ using ResultT = typename PassT::Result;
+ using ResultModelT = AnalysisResultModel<IRUnitT, PassT, ResultT>;
/// \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, AnalysisManager<IRUnitT> *AM) override {
- return make_unique<ResultModelT>(Pass.run(IR, AM));
- }
-
- /// \brief The model delegates to a static \c PassT::name method.
- ///
- /// The returned string ref must point to constant immutable data!
- StringRef name() override { return PassT::name(); }
-
- PassT Pass;
-};
-
-/// \brief Specialization of \c AnalysisPassModel which does not pass an
-/// \c AnalysisManager to PassT's run method.
-template <typename IRUnitT, typename PassT>
-struct AnalysisPassModel<IRUnitT, PassT, false> : AnalysisPassConcept<IRUnitT> {
- 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, AnalysisManager<IRUnitT> *) override {
- return make_unique<ResultModelT>(Pass.run(IR));
+ return make_unique<ResultModelT>(
+ invokeRunMethod<ResultT>(Pass, &PassT::run, IR, AM));
}
/// \brief The model delegates to a static \c PassT::name method.
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