Revert "[mlir] Improve mlir-query by adding matcher combinators" (#145534)

Reverts llvm/llvm-project#141423

Author: qinkunbao

mlir/include/mlir/Query/Matcher/Marshallers.h

@@ -108,9 +108,6 @@ class MatcherDescriptor {
                                 const llvm::ArrayRef<ParserValue> args,
                                 Diagnostics *error) const = 0;
 
-  // If the matcher is variadic, it can take any number of arguments.
-  virtual bool isVariadic() const = 0;
-
   // Returns the number of arguments accepted by the matcher.
   virtual unsigned getNumArgs() const = 0;
 
@@ -143,8 +140,6 @@ class FixedArgCountMatcherDescriptor : public MatcherDescriptor {
     return marshaller(matcherFunc, matcherName, nameRange, args, error);
   }
 
-  bool isVariadic() const override { return false; }
-
   unsigned getNumArgs() const override { return argKinds.size(); }
 
   void getArgKinds(unsigned argNo, std::vector<ArgKind> &kinds) const override {
@@ -158,54 +153,6 @@ class FixedArgCountMatcherDescriptor : public MatcherDescriptor {
   const std::vector<ArgKind> argKinds;
 };
 
-class VariadicOperatorMatcherDescriptor : public MatcherDescriptor {
-public:
-  using VarOp = DynMatcher::VariadicOperator;
-  VariadicOperatorMatcherDescriptor(unsigned minCount, unsigned maxCount,
-                                    VarOp varOp, StringRef matcherName)
-      : minCount(minCount), maxCount(maxCount), varOp(varOp),
-        matcherName(matcherName) {}
-
-  VariantMatcher create(SourceRange nameRange, ArrayRef<ParserValue> args,
-                        Diagnostics *error) const override {
-    if (args.size() < minCount || maxCount < args.size()) {
-      addError(error, nameRange, ErrorType::RegistryWrongArgCount,
-               {llvm::Twine("requires between "), llvm::Twine(minCount),
-                llvm::Twine(" and "), llvm::Twine(maxCount),
-                llvm::Twine(" args, got "), llvm::Twine(args.size())});
-      return VariantMatcher();
-    }
-
-    std::vector<VariantMatcher> innerArgs;
-    for (int64_t i = 0, e = args.size(); i != e; ++i) {
-      const ParserValue &arg = args[i];
-      const VariantValue &value = arg.value;
-      if (!value.isMatcher()) {
-        addError(error, arg.range, ErrorType::RegistryWrongArgType,
-                 {llvm::Twine(i + 1), llvm::Twine("matcher: "),
-                  llvm::Twine(value.getTypeAsString())});
-        return VariantMatcher();
-      }
-      innerArgs.push_back(value.getMatcher());
-    }
-    return VariantMatcher::VariadicOperatorMatcher(varOp, std::move(innerArgs));
-  }
-
-  bool isVariadic() const override { return true; }
-
-  unsigned getNumArgs() const override { return 0; }
-
-  void getArgKinds(unsigned argNo, std::vector<ArgKind> &kinds) const override {
-    kinds.push_back(ArgKind(ArgKind::Matcher));
-  }
-
-private:
-  const unsigned minCount;
-  const unsigned maxCount;
-  const VarOp varOp;
-  const StringRef matcherName;
-};
-
 // Helper function to check if argument count matches expected count
 inline bool checkArgCount(SourceRange nameRange, size_t expectedArgCount,
                           llvm::ArrayRef<ParserValue> args,
@@ -277,14 +224,6 @@ makeMatcherAutoMarshall(ReturnType (*matcherFunc)(ArgTypes...),
       reinterpret_cast<void (*)()>(matcherFunc), matcherName, argKinds);
 }
 
-// Variadic operator overload.
-template <unsigned MinCount, unsigned MaxCount>
-std::unique_ptr<MatcherDescriptor>
-makeMatcherAutoMarshall(VariadicOperatorMatcherFunc<MinCount, MaxCount> func,
-                        StringRef matcherName) {
-  return std::make_unique<VariadicOperatorMatcherDescriptor>(
-      MinCount, MaxCount, func.varOp, matcherName);
-}
 } // namespace mlir::query::matcher::internal
 
 #endif // MLIR_TOOLS_MLIRQUERY_MATCHER_MARSHALLERS_H

mlir/include/mlir/Query/Matcher/MatchFinder.h

@@ -21,9 +21,7 @@
 
 namespace mlir::query::matcher {
 
-/// Finds and collects matches from the IR. After construction
-/// `collectMatches` can be used to traverse the IR and apply
-/// matchers.
+/// A class that provides utilities to find operations in the IR.
 class MatchFinder {
 
 public:

mlir/include/mlir/Query/Matcher/MatchersInternal.h

@@ -8,11 +8,11 @@
 //
 // Implements the base layer of the matcher framework.
 //
-// Matchers are methods that return a Matcher which provides a
-// `match(...)` method whose parameters define the context of the match.
-// Support includes simple (unary) matchers as well as matcher combinators
-// (anyOf, allOf, etc.)
+// Matchers are methods that return a Matcher which provides a method one of the
+// following methods: match(Operation *op), match(Operation *op,
+// SetVector<Operation *> &matchedOps)
 //
+// The matcher functions are defined in include/mlir/IR/Matchers.h.
 // This file contains the wrapper classes needed to construct matchers for
 // mlir-query.
 //
@@ -25,15 +25,6 @@
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 
 namespace mlir::query::matcher {
-class DynMatcher;
-namespace internal {
-
-bool allOfVariadicOperator(Operation *op, SetVector<Operation *> *matchedOps,
-                           ArrayRef<DynMatcher> innerMatchers);
-bool anyOfVariadicOperator(Operation *op, SetVector<Operation *> *matchedOps,
-                           ArrayRef<DynMatcher> innerMatchers);
-
-} // namespace internal
 
 // Defaults to false if T has no match() method with the signature:
 // match(Operation* op).
@@ -93,27 +84,6 @@ class MatcherFnImpl : public MatcherInterface {
   MatcherFn matcherFn;
 };
 
-// VariadicMatcher takes a vector of Matchers and returns true if any Matchers
-// match the given operation.
-using VariadicOperatorFunction = bool (*)(Operation *op,
-                                          SetVector<Operation *> *matchedOps,
-                                          ArrayRef<DynMatcher> innerMatchers);
-
-template <VariadicOperatorFunction Func>
-class VariadicMatcher : public MatcherInterface {
-public:
-  VariadicMatcher(std::vector<DynMatcher> matchers)
-      : matchers(std::move(matchers)) {}
-
-  bool match(Operation *op) override { return Func(op, nullptr, matchers); }
-  bool match(Operation *op, SetVector<Operation *> &matchedOps) override {
-    return Func(op, &matchedOps, matchers);
-  }
-
-private:
-  std::vector<DynMatcher> matchers;
-};
-
 // Matcher wraps a MatcherInterface implementation and provides match()
 // methods that redirect calls to the underlying implementation.
 class DynMatcher {
@@ -122,31 +92,6 @@ class DynMatcher {
   DynMatcher(MatcherInterface *implementation)
       : implementation(implementation) {}
 
-  // Construct from a variadic function.
-  enum VariadicOperator {
-    // Matches operations for which all provided matchers match.
-    AllOf,
-    // Matches operations for which at least one of the provided matchers
-    // matches.
-    AnyOf
-  };
-
-  static std::unique_ptr<DynMatcher>
-  constructVariadic(VariadicOperator Op,
-                    std::vector<DynMatcher> innerMatchers) {
-    switch (Op) {
-    case AllOf:
-      return std::make_unique<DynMatcher>(
-          new VariadicMatcher<internal::allOfVariadicOperator>(
-              std::move(innerMatchers)));
-    case AnyOf:
-      return std::make_unique<DynMatcher>(
-          new VariadicMatcher<internal::anyOfVariadicOperator>(
-              std::move(innerMatchers)));
-    }
-    llvm_unreachable("Invalid Op value.");
-  }
-
   template <typename MatcherFn>
   static std::unique_ptr<DynMatcher>
   constructDynMatcherFromMatcherFn(MatcherFn &matcherFn) {
@@ -168,59 +113,6 @@ class DynMatcher {
   std::string functionName;
 };
 
-// VariadicOperatorMatcher related types.
-template <typename... Ps>
-class VariadicOperatorMatcher {
-public:
-  VariadicOperatorMatcher(DynMatcher::VariadicOperator varOp, Ps &&...params)
-      : varOp(varOp), params(std::forward<Ps>(params)...) {}
-
-  operator std::unique_ptr<DynMatcher>() const & {
-    return DynMatcher::constructVariadic(
-        varOp, getMatchers(std::index_sequence_for<Ps...>()));
-  }
-
-  operator std::unique_ptr<DynMatcher>() && {
-    return DynMatcher::constructVariadic(
-        varOp, std::move(*this).getMatchers(std::index_sequence_for<Ps...>()));
-  }
-
-private:
-  // Helper method to unpack the tuple into a vector.
-  template <std::size_t... Is>
-  std::vector<DynMatcher> getMatchers(std::index_sequence<Is...>) const & {
-    return {DynMatcher(std::get<Is>(params))...};
-  }
-
-  template <std::size_t... Is>
-  std::vector<DynMatcher> getMatchers(std::index_sequence<Is...>) && {
-    return {DynMatcher(std::get<Is>(std::move(params)))...};
-  }
-
-  const DynMatcher::VariadicOperator varOp;
-  std::tuple<Ps...> params;
-};
-
-// Overloaded function object to generate VariadicOperatorMatcher objects from
-// arbitrary matchers.
-template <unsigned MinCount, unsigned MaxCount>
-struct VariadicOperatorMatcherFunc {
-  DynMatcher::VariadicOperator varOp;
-
-  template <typename... Ms>
-  VariadicOperatorMatcher<Ms...> operator()(Ms &&...Ps) const {
-    static_assert(MinCount <= sizeof...(Ms) && sizeof...(Ms) <= MaxCount,
-                  "invalid number of parameters for variadic matcher");
-    return VariadicOperatorMatcher<Ms...>(varOp, std::forward<Ms>(Ps)...);
-  }
-};
-
-namespace internal {
-const VariadicOperatorMatcherFunc<1, std::numeric_limits<unsigned>::max()>
-    anyOf = {DynMatcher::AnyOf};
-const VariadicOperatorMatcherFunc<1, std::numeric_limits<unsigned>::max()>
-    allOf = {DynMatcher::AllOf};
-} // namespace internal
 } // namespace mlir::query::matcher
 
 #endif // MLIR_TOOLS_MLIRQUERY_MATCHER_MATCHERSINTERNAL_H

mlir/include/mlir/Query/Matcher/SliceMatchers.h

@@ -6,8 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file defines slicing-analysis matchers that extend and abstract the
-// core implementations from `SliceAnalysis.h`.
+// This file provides matchers for MLIRQuery that peform slicing analysis
 //
 //===----------------------------------------------------------------------===//
 
@@ -17,9 +16,9 @@
 #include "mlir/Analysis/SliceAnalysis.h"
 #include "mlir/IR/Operation.h"
 
-/// Computes the backward-slice of all transitive defs reachable from `rootOp`,
-/// if `innerMatcher` matches. The traversal stops once the desired depth level
-/// is reached.
+/// A matcher encapsulating `getBackwardSlice` method from SliceAnalysis.h.
+/// Additionally, it limits the slice computation to a certain depth level using
+/// a custom filter.
 ///
 /// Example: starting from node 9, assuming the matcher
 /// computes the slice for the first two depth levels:
@@ -120,77 +119,6 @@ bool BackwardSliceMatcher<Matcher>::matches(
                            : backwardSlice.size() >= 1;
 }
 
-/// Computes the backward-slice of all transitive defs reachable from `rootOp`,
-/// if `innerMatcher` matches. Traversal stops where `filterMatcher` matches.
-template <typename BaseMatcher, typename Filter>
-class PredicateBackwardSliceMatcher {
-public:
-  PredicateBackwardSliceMatcher(BaseMatcher innerMatcher, Filter filterMatcher,
-                                bool inclusive, bool omitBlockArguments,
-                                bool omitUsesFromAbove)
-      : innerMatcher(std::move(innerMatcher)),
-        filterMatcher(std::move(filterMatcher)), inclusive(inclusive),
-        omitBlockArguments(omitBlockArguments),
-        omitUsesFromAbove(omitUsesFromAbove) {}
-
-  bool match(Operation *rootOp, SetVector<Operation *> &backwardSlice) {
-    backwardSlice.clear();
-    BackwardSliceOptions options;
-    options.inclusive = inclusive;
-    options.omitUsesFromAbove = omitUsesFromAbove;
-    options.omitBlockArguments = omitBlockArguments;
-    if (innerMatcher.match(rootOp)) {
-      options.filter = [&](Operation *subOp) {
-        return !filterMatcher.match(subOp);
-      };
-      LogicalResult result = getBackwardSlice(rootOp, &backwardSlice, options);
-      assert(result.succeeded() && "expected backward slice to succeed");
-      (void)result;
-      return options.inclusive ? backwardSlice.size() > 1
-                               : backwardSlice.size() >= 1;
-    }
-    return false;
-  }
-
-private:
-  BaseMatcher innerMatcher;
-  Filter filterMatcher;
-  bool inclusive;
-  bool omitBlockArguments;
-  bool omitUsesFromAbove;
-};
-
-/// Computes the forward-slice of all users reachable from `rootOp`,
-/// if `innerMatcher` matches. Traversal stops where `filterMatcher` matches.
-template <typename BaseMatcher, typename Filter>
-class PredicateForwardSliceMatcher {
-public:
-  PredicateForwardSliceMatcher(BaseMatcher innerMatcher, Filter filterMatcher,
-                               bool inclusive)
-      : innerMatcher(std::move(innerMatcher)),
-        filterMatcher(std::move(filterMatcher)), inclusive(inclusive) {}
-
-  bool match(Operation *rootOp, SetVector<Operation *> &forwardSlice) {
-    forwardSlice.clear();
-    ForwardSliceOptions options;
-    options.inclusive = inclusive;
-    if (innerMatcher.match(rootOp)) {
-      options.filter = [&](Operation *subOp) {
-        return !filterMatcher.match(subOp);
-      };
-      getForwardSlice(rootOp, &forwardSlice, options);
-      return options.inclusive ? forwardSlice.size() > 1
-                               : forwardSlice.size() >= 1;
-    }
-    return false;
-  }
-
-private:
-  BaseMatcher innerMatcher;
-  Filter filterMatcher;
-  bool inclusive;
-};
-
 /// Matches transitive defs of a top-level operation up to N levels.
 template <typename Matcher>
 inline BackwardSliceMatcher<Matcher>
@@ -202,7 +130,7 @@ m_GetDefinitions(Matcher innerMatcher, int64_t maxDepth, bool inclusive,
                                        omitUsesFromAbove);
 }
 
-/// Matches all transitive defs of a top-level operation up to N levels.
+/// Matches all transitive defs of a top-level operation up to N levels
 template <typename Matcher>
 inline BackwardSliceMatcher<Matcher> m_GetAllDefinitions(Matcher innerMatcher,
                                                          int64_t maxDepth) {
@@ -211,28 +139,6 @@ inline BackwardSliceMatcher<Matcher> m_GetAllDefinitions(Matcher innerMatcher,
                                        false, false);
 }
 
-/// Matches all transitive defs of a top-level operation and stops where
-/// `filterMatcher` rejects.
-template <typename BaseMatcher, typename Filter>
-inline PredicateBackwardSliceMatcher<BaseMatcher, Filter>
-m_GetDefinitionsByPredicate(BaseMatcher innerMatcher, Filter filterMatcher,
-                            bool inclusive, bool omitBlockArguments,
-                            bool omitUsesFromAbove) {
-  return PredicateBackwardSliceMatcher<BaseMatcher, Filter>(
-      std::move(innerMatcher), std::move(filterMatcher), inclusive,
-      omitBlockArguments, omitUsesFromAbove);
-}
-
-/// Matches all users of a top-level operation and stops where
-/// `filterMatcher` rejects.
-template <typename BaseMatcher, typename Filter>
-inline PredicateForwardSliceMatcher<BaseMatcher, Filter>
-m_GetUsersByPredicate(BaseMatcher innerMatcher, Filter filterMatcher,
-                      bool inclusive) {
-  return PredicateForwardSliceMatcher<BaseMatcher, Filter>(
-      std::move(innerMatcher), std::move(filterMatcher), inclusive);
-}
-
 } // namespace mlir::query::matcher
 
 #endif // MLIR_TOOLS_MLIRQUERY_MATCHERS_SLICEMATCHERS_H