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https://github.com/c64scene-ar/llvm-6502.git
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9a747f1305
I'd like to eventually rip it out, but for now producing the same selections as the old matcher is more important. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96458 91177308-0d34-0410-b5e6-96231b3b80d8
406 lines
13 KiB
C++
406 lines
13 KiB
C++
//===- DAGISelMatcher.h - Representation of DAG pattern matcher -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TBLGEN_DAGISELMATCHER_H
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#define TBLGEN_DAGISELMATCHER_H
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#include "llvm/CodeGen/ValueTypes.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Casting.h"
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namespace llvm {
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class CodeGenDAGPatterns;
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class MatcherNode;
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class PatternToMatch;
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class raw_ostream;
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class ComplexPattern;
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MatcherNode *ConvertPatternToMatcher(const PatternToMatch &Pattern,
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const CodeGenDAGPatterns &CGP);
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void EmitMatcherTable(const MatcherNode *Matcher, raw_ostream &OS);
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/// MatcherNode - Base class for all the the DAG ISel Matcher representation
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/// nodes.
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class MatcherNode {
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public:
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enum KindTy {
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EmitNode,
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Push, // [Push, Dest0, Dest1, Dest2, Dest3]
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Record, // [Record]
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MoveChild, // [MoveChild, Child#]
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MoveParent, // [MoveParent]
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CheckSame, // [CheckSame, N] Fail if not same as prev match.
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CheckPatternPredicate,
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CheckPredicate, // [CheckPredicate, P] Fail if predicate fails.
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CheckOpcode, // [CheckOpcode, Opcode] Fail if not opcode.
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CheckType, // [CheckType, MVT] Fail if not correct type.
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CheckInteger, // [CheckInteger, int0,int1,int2,...int7] Fail if wrong val.
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CheckCondCode, // [CheckCondCode, CondCode] Fail if not condcode.
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CheckValueType,
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CheckComplexPat,
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CheckAndImm,
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CheckOrImm,
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CheckFoldableChainNode,
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CheckChainCompatible
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};
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const KindTy Kind;
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protected:
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MatcherNode(KindTy K) : Kind(K) {}
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public:
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virtual ~MatcherNode() {}
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KindTy getKind() const { return Kind; }
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static inline bool classof(const MatcherNode *) { return true; }
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virtual void print(raw_ostream &OS, unsigned indent = 0) const = 0;
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void dump() const;
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};
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/// EmitNodeMatcherNode - This signals a successful match and generates a node.
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class EmitNodeMatcherNode : public MatcherNode {
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const PatternToMatch &Pattern;
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public:
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EmitNodeMatcherNode(const PatternToMatch &pattern)
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: MatcherNode(EmitNode), Pattern(pattern) {}
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const PatternToMatch &getPattern() const { return Pattern; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == EmitNode;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// MatcherNodeWithChild - Every node accept the final accept state has a child
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/// that is executed after the node runs. This class captures this commonality.
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class MatcherNodeWithChild : public MatcherNode {
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OwningPtr<MatcherNode> Child;
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public:
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MatcherNodeWithChild(KindTy K) : MatcherNode(K) {}
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MatcherNode *getChild() { return Child.get(); }
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const MatcherNode *getChild() const { return Child.get(); }
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void setChild(MatcherNode *C) { Child.reset(C); }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() != EmitNode;
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}
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protected:
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void printChild(raw_ostream &OS, unsigned indent) const;
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};
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/// PushMatcherNode - This pushes a failure scope on the stack and evaluates
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/// 'child'. If 'child' fails to match, it pops its scope and attempts to
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/// match 'Failure'.
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class PushMatcherNode : public MatcherNodeWithChild {
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OwningPtr<MatcherNode> Failure;
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public:
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PushMatcherNode(MatcherNode *child = 0, MatcherNode *failure = 0)
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: MatcherNodeWithChild(Push), Failure(failure) {
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setChild(child);
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}
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MatcherNode *getFailure() { return Failure.get(); }
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const MatcherNode *getFailure() const { return Failure.get(); }
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void setFailure(MatcherNode *N) { Failure.reset(N); }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == Push;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// RecordMatcherNode - Save the current node in the operand list.
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class RecordMatcherNode : public MatcherNodeWithChild {
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/// WhatFor - This is a string indicating why we're recording this. This
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/// should only be used for comment generation not anything semantic.
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std::string WhatFor;
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public:
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RecordMatcherNode(const std::string &whatfor)
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: MatcherNodeWithChild(Record), WhatFor(whatfor) {}
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const std::string &getWhatFor() const { return WhatFor; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == Record;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// MoveChildMatcherNode - This tells the interpreter to move into the
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/// specified child node.
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class MoveChildMatcherNode : public MatcherNodeWithChild {
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unsigned ChildNo;
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public:
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MoveChildMatcherNode(unsigned childNo)
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: MatcherNodeWithChild(MoveChild), ChildNo(childNo) {}
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unsigned getChildNo() const { return ChildNo; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == MoveChild;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// MoveParentMatcherNode - This tells the interpreter to move to the parent
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/// of the current node.
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class MoveParentMatcherNode : public MatcherNodeWithChild {
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public:
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MoveParentMatcherNode()
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: MatcherNodeWithChild(MoveParent) {}
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == MoveParent;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckSameMatcherNode - This checks to see if this node is exactly the same
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/// node as the specified match that was recorded with 'Record'. This is used
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/// when patterns have the same name in them, like '(mul GPR:$in, GPR:$in)'.
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class CheckSameMatcherNode : public MatcherNodeWithChild {
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unsigned MatchNumber;
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public:
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CheckSameMatcherNode(unsigned matchnumber)
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: MatcherNodeWithChild(CheckSame), MatchNumber(matchnumber) {}
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unsigned getMatchNumber() const { return MatchNumber; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckSame;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckPatternPredicateMatcherNode - This checks the target-specific predicate
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/// to see if the entire pattern is capable of matching. This predicate does
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/// not take a node as input. This is used for subtarget feature checks etc.
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class CheckPatternPredicateMatcherNode : public MatcherNodeWithChild {
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std::string Predicate;
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public:
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CheckPatternPredicateMatcherNode(StringRef predicate)
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: MatcherNodeWithChild(CheckPatternPredicate), Predicate(predicate) {}
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StringRef getPredicate() const { return Predicate; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckPatternPredicate;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckPredicateMatcherNode - This checks the target-specific predicate to
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/// see if the node is acceptable.
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class CheckPredicateMatcherNode : public MatcherNodeWithChild {
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StringRef PredName;
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public:
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CheckPredicateMatcherNode(StringRef predname)
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: MatcherNodeWithChild(CheckPredicate), PredName(predname) {}
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StringRef getPredicateName() const { return PredName; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckPredicate;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckOpcodeMatcherNode - This checks to see if the current node has the
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/// specified opcode, if not it fails to match.
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class CheckOpcodeMatcherNode : public MatcherNodeWithChild {
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StringRef OpcodeName;
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public:
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CheckOpcodeMatcherNode(StringRef opcodename)
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: MatcherNodeWithChild(CheckOpcode), OpcodeName(opcodename) {}
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StringRef getOpcodeName() const { return OpcodeName; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckOpcode;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckTypeMatcherNode - This checks to see if the current node has the
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/// specified type, if not it fails to match.
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class CheckTypeMatcherNode : public MatcherNodeWithChild {
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MVT::SimpleValueType Type;
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public:
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CheckTypeMatcherNode(MVT::SimpleValueType type)
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: MatcherNodeWithChild(CheckType), Type(type) {}
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MVT::SimpleValueType getType() const { return Type; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckType;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckIntegerMatcherNode - This checks to see if the current node is a
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/// ConstantSDNode with the specified integer value, if not it fails to match.
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class CheckIntegerMatcherNode : public MatcherNodeWithChild {
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int64_t Value;
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public:
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CheckIntegerMatcherNode(int64_t value)
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: MatcherNodeWithChild(CheckInteger), Value(value) {}
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int64_t getValue() const { return Value; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckInteger;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckCondCodeMatcherNode - This checks to see if the current node is a
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/// CondCodeSDNode with the specified condition, if not it fails to match.
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class CheckCondCodeMatcherNode : public MatcherNodeWithChild {
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StringRef CondCodeName;
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public:
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CheckCondCodeMatcherNode(StringRef condcodename)
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: MatcherNodeWithChild(CheckCondCode), CondCodeName(condcodename) {}
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StringRef getCondCodeName() const { return CondCodeName; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckCondCode;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckValueTypeMatcherNode - This checks to see if the current node is a
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/// VTSDNode with the specified type, if not it fails to match.
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class CheckValueTypeMatcherNode : public MatcherNodeWithChild {
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StringRef TypeName;
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public:
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CheckValueTypeMatcherNode(StringRef type_name)
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: MatcherNodeWithChild(CheckValueType), TypeName(type_name) {}
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StringRef getTypeName() const { return TypeName; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckValueType;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckComplexPatMatcherNode - This node runs the specified ComplexPattern on
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/// the current node.
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class CheckComplexPatMatcherNode : public MatcherNodeWithChild {
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const ComplexPattern &Pattern;
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public:
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CheckComplexPatMatcherNode(const ComplexPattern &pattern)
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: MatcherNodeWithChild(CheckComplexPat), Pattern(pattern) {}
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const ComplexPattern &getPattern() const { return Pattern; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckComplexPat;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckAndImmMatcherNode - This checks to see if the current node is an 'and'
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/// with something equivalent to the specified immediate.
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class CheckAndImmMatcherNode : public MatcherNodeWithChild {
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int64_t Value;
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public:
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CheckAndImmMatcherNode(int64_t value)
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: MatcherNodeWithChild(CheckAndImm), Value(value) {}
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int64_t getValue() const { return Value; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckAndImm;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckOrImmMatcherNode - This checks to see if the current node is an 'and'
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/// with something equivalent to the specified immediate.
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class CheckOrImmMatcherNode : public MatcherNodeWithChild {
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int64_t Value;
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public:
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CheckOrImmMatcherNode(int64_t value)
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: MatcherNodeWithChild(CheckOrImm), Value(value) {}
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int64_t getValue() const { return Value; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckOrImm;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckFoldableChainNodeMatcherNode - This checks to see if the current node
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/// (which defines a chain operand) is safe to fold into a larger pattern.
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class CheckFoldableChainNodeMatcherNode : public MatcherNodeWithChild {
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public:
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CheckFoldableChainNodeMatcherNode()
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: MatcherNodeWithChild(CheckFoldableChainNode) {}
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckFoldableChainNode;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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/// CheckChainCompatibleMatcherNode - Verify that the current node's chain
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/// operand is 'compatible' with the specified recorded node's.
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class CheckChainCompatibleMatcherNode : public MatcherNodeWithChild {
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unsigned PreviousOp;
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public:
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CheckChainCompatibleMatcherNode(unsigned previousop)
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: MatcherNodeWithChild(CheckChainCompatible), PreviousOp(previousop) {}
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unsigned getPreviousOp() const { return PreviousOp; }
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static inline bool classof(const MatcherNode *N) {
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return N->getKind() == CheckChainCompatible;
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}
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virtual void print(raw_ostream &OS, unsigned indent = 0) const;
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};
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} // end namespace llvm
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#endif
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