llvm-6502/utils/TableGen/DAGISelMatcher.h
Chris Lattner c642b84fb8 prefix captured value names with $ so they look like
variables.  Use the fancy OpNo variable instead of i,
which has the right index including chains.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 01:27:29 +00:00

386 lines
12 KiB
C++

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