1 //===- DAGISelMatcher.h - Representation of DAG pattern matcher -----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef TBLGEN_DAGISELMATCHER_H
11 #define TBLGEN_DAGISELMATCHER_H
13 #include "llvm/CodeGen/ValueTypes.h"
14 #include "llvm/ADT/OwningPtr.h"
15 #include "llvm/ADT/StringRef.h"
16 #include "llvm/ADT/SmallVector.h"
17 #include "llvm/Support/Casting.h"
20 class CodeGenDAGPatterns;
28 Matcher *ConvertPatternToMatcher(const PatternToMatch &Pattern,unsigned Variant,
29 const CodeGenDAGPatterns &CGP);
30 Matcher *OptimizeMatcher(Matcher *Matcher, const CodeGenDAGPatterns &CGP);
31 void EmitMatcherTable(const Matcher *Matcher, const CodeGenDAGPatterns &CGP,
35 /// Matcher - Base class for all the the DAG ISel Matcher representation
38 // The next matcher node that is executed after this one. Null if this is the
39 // last stage of a match.
40 OwningPtr<Matcher> Next;
43 // Matcher state manipulation.
44 Scope, // Push a checking scope.
45 RecordNode, // Record the current node.
46 RecordChild, // Record a child of the current node.
47 RecordMemRef, // Record the memref in the current node.
48 CaptureFlagInput, // If the current node has an input flag, save it.
49 MoveChild, // Move current node to specified child.
50 MoveParent, // Move current node to parent.
52 // Predicate checking.
53 CheckSame, // Fail if not same as prev match.
54 CheckPatternPredicate,
55 CheckPredicate, // Fail if node predicate fails.
56 CheckOpcode, // Fail if not opcode.
57 SwitchOpcode, // Dispatch based on opcode.
58 CheckType, // Fail if not correct type.
59 SwitchType, // Dispatch based on type.
60 CheckChildType, // Fail if child has wrong type.
61 CheckInteger, // Fail if wrong val.
62 CheckCondCode, // Fail if not condcode.
67 CheckFoldableChainNode,
69 // Node creation/emisssion.
70 EmitInteger, // Create a TargetConstant
71 EmitStringInteger, // Create a TargetConstant from a string.
72 EmitRegister, // Create a register.
73 EmitConvertToTarget, // Convert a imm/fpimm to target imm/fpimm
74 EmitMergeInputChains, // Merge together a chains for an input.
75 EmitCopyToReg, // Emit a copytoreg into a physreg.
76 EmitNode, // Create a DAG node
77 EmitNodeXForm, // Run a SDNodeXForm
78 MarkFlagResults, // Indicate which interior nodes have flag results.
79 CompleteMatch, // Finish a match and update the results.
80 MorphNodeTo // Build a node, finish a match and update results.
85 Matcher(KindTy K) : Kind(K) {}
89 KindTy getKind() const { return Kind; }
91 Matcher *getNext() { return Next.get(); }
92 const Matcher *getNext() const { return Next.get(); }
93 void setNext(Matcher *C) { Next.reset(C); }
94 Matcher *takeNext() { return Next.take(); }
96 OwningPtr<Matcher> &getNextPtr() { return Next; }
98 static inline bool classof(const Matcher *) { return true; }
100 bool isEqual(const Matcher *M) const {
101 if (getKind() != M->getKind()) return false;
102 return isEqualImpl(M);
105 unsigned getHash() const {
106 // Clear the high bit so we don't conflict with tombstones etc.
107 return ((getHashImpl() << 4) ^ getKind()) & (~0U>>1);
110 /// isSafeToReorderWithPatternPredicate - Return true if it is safe to sink a
111 /// PatternPredicate node past this one.
112 virtual bool isSafeToReorderWithPatternPredicate() const {
116 /// isContradictory - Return true of these two matchers could never match on
118 bool isContradictory(const Matcher *Other) const {
119 // Since this predicate is reflexive, we canonicalize the ordering so that
120 // we always match a node against nodes with kinds that are greater or equal
121 // to them. For example, we'll pass in a CheckType node as an argument to
122 // the CheckOpcode method, not the other way around.
123 if (getKind() < Other->getKind())
124 return isContradictoryImpl(Other);
125 return Other->isContradictoryImpl(this);
128 void print(raw_ostream &OS, unsigned indent = 0) const;
129 void printOne(raw_ostream &OS) const;
132 virtual void printImpl(raw_ostream &OS, unsigned indent) const = 0;
133 virtual bool isEqualImpl(const Matcher *M) const = 0;
134 virtual unsigned getHashImpl() const = 0;
135 virtual bool isContradictoryImpl(const Matcher *M) const { return false; }
138 /// ScopeMatcher - This attempts to match each of its children to find the first
139 /// one that successfully matches. If one child fails, it tries the next child.
140 /// If none of the children match then this check fails. It never has a 'next'.
141 class ScopeMatcher : public Matcher {
142 SmallVector<Matcher*, 4> Children;
144 ScopeMatcher(Matcher *const *children, unsigned numchildren)
145 : Matcher(Scope), Children(children, children+numchildren) {
147 virtual ~ScopeMatcher();
149 unsigned getNumChildren() const { return Children.size(); }
151 Matcher *getChild(unsigned i) { return Children[i]; }
152 const Matcher *getChild(unsigned i) const { return Children[i]; }
154 void resetChild(unsigned i, Matcher *N) {
159 Matcher *takeChild(unsigned i) {
160 Matcher *Res = Children[i];
165 void setNumChildren(unsigned NC) {
166 if (NC < Children.size()) {
167 // delete any children we're about to lose pointers to.
168 for (unsigned i = NC, e = Children.size(); i != e; ++i)
174 static inline bool classof(const Matcher *N) {
175 return N->getKind() == Scope;
179 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
180 virtual bool isEqualImpl(const Matcher *M) const { return false; }
181 virtual unsigned getHashImpl() const { return 12312; }
184 /// RecordMatcher - Save the current node in the operand list.
185 class RecordMatcher : public Matcher {
186 /// WhatFor - This is a string indicating why we're recording this. This
187 /// should only be used for comment generation not anything semantic.
190 /// ResultNo - The slot number in the RecordedNodes vector that this will be,
191 /// just printed as a comment.
194 RecordMatcher(const std::string &whatfor, unsigned resultNo)
195 : Matcher(RecordNode), WhatFor(whatfor), ResultNo(resultNo) {}
197 const std::string &getWhatFor() const { return WhatFor; }
198 unsigned getResultNo() const { return ResultNo; }
200 static inline bool classof(const Matcher *N) {
201 return N->getKind() == RecordNode;
204 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
206 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
207 virtual bool isEqualImpl(const Matcher *M) const { return true; }
208 virtual unsigned getHashImpl() const { return 0; }
211 /// RecordChildMatcher - Save a numbered child of the current node, or fail
212 /// the match if it doesn't exist. This is logically equivalent to:
213 /// MoveChild N + RecordNode + MoveParent.
214 class RecordChildMatcher : public Matcher {
217 /// WhatFor - This is a string indicating why we're recording this. This
218 /// should only be used for comment generation not anything semantic.
221 /// ResultNo - The slot number in the RecordedNodes vector that this will be,
222 /// just printed as a comment.
225 RecordChildMatcher(unsigned childno, const std::string &whatfor,
227 : Matcher(RecordChild), ChildNo(childno), WhatFor(whatfor),
228 ResultNo(resultNo) {}
230 unsigned getChildNo() const { return ChildNo; }
231 const std::string &getWhatFor() const { return WhatFor; }
232 unsigned getResultNo() const { return ResultNo; }
234 static inline bool classof(const Matcher *N) {
235 return N->getKind() == RecordChild;
238 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
241 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
242 virtual bool isEqualImpl(const Matcher *M) const {
243 return cast<RecordChildMatcher>(M)->getChildNo() == getChildNo();
245 virtual unsigned getHashImpl() const { return getChildNo(); }
248 /// RecordMemRefMatcher - Save the current node's memref.
249 class RecordMemRefMatcher : public Matcher {
251 RecordMemRefMatcher() : Matcher(RecordMemRef) {}
253 static inline bool classof(const Matcher *N) {
254 return N->getKind() == RecordMemRef;
257 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
260 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
261 virtual bool isEqualImpl(const Matcher *M) const { return true; }
262 virtual unsigned getHashImpl() const { return 0; }
266 /// CaptureFlagInputMatcher - If the current record has a flag input, record
267 /// it so that it is used as an input to the generated code.
268 class CaptureFlagInputMatcher : public Matcher {
270 CaptureFlagInputMatcher() : Matcher(CaptureFlagInput) {}
272 static inline bool classof(const Matcher *N) {
273 return N->getKind() == CaptureFlagInput;
276 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
279 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
280 virtual bool isEqualImpl(const Matcher *M) const { return true; }
281 virtual unsigned getHashImpl() const { return 0; }
284 /// MoveChildMatcher - This tells the interpreter to move into the
285 /// specified child node.
286 class MoveChildMatcher : public Matcher {
289 MoveChildMatcher(unsigned childNo) : Matcher(MoveChild), ChildNo(childNo) {}
291 unsigned getChildNo() const { return ChildNo; }
293 static inline bool classof(const Matcher *N) {
294 return N->getKind() == MoveChild;
297 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
300 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
301 virtual bool isEqualImpl(const Matcher *M) const {
302 return cast<MoveChildMatcher>(M)->getChildNo() == getChildNo();
304 virtual unsigned getHashImpl() const { return getChildNo(); }
307 /// MoveParentMatcher - This tells the interpreter to move to the parent
308 /// of the current node.
309 class MoveParentMatcher : public Matcher {
311 MoveParentMatcher() : Matcher(MoveParent) {}
313 static inline bool classof(const Matcher *N) {
314 return N->getKind() == MoveParent;
317 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
320 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
321 virtual bool isEqualImpl(const Matcher *M) const { return true; }
322 virtual unsigned getHashImpl() const { return 0; }
325 /// CheckSameMatcher - This checks to see if this node is exactly the same
326 /// node as the specified match that was recorded with 'Record'. This is used
327 /// when patterns have the same name in them, like '(mul GPR:$in, GPR:$in)'.
328 class CheckSameMatcher : public Matcher {
329 unsigned MatchNumber;
331 CheckSameMatcher(unsigned matchnumber)
332 : Matcher(CheckSame), MatchNumber(matchnumber) {}
334 unsigned getMatchNumber() const { return MatchNumber; }
336 static inline bool classof(const Matcher *N) {
337 return N->getKind() == CheckSame;
340 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
343 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
344 virtual bool isEqualImpl(const Matcher *M) const {
345 return cast<CheckSameMatcher>(M)->getMatchNumber() == getMatchNumber();
347 virtual unsigned getHashImpl() const { return getMatchNumber(); }
350 /// CheckPatternPredicateMatcher - This checks the target-specific predicate
351 /// to see if the entire pattern is capable of matching. This predicate does
352 /// not take a node as input. This is used for subtarget feature checks etc.
353 class CheckPatternPredicateMatcher : public Matcher {
354 std::string Predicate;
356 CheckPatternPredicateMatcher(StringRef predicate)
357 : Matcher(CheckPatternPredicate), Predicate(predicate) {}
359 StringRef getPredicate() const { return Predicate; }
361 static inline bool classof(const Matcher *N) {
362 return N->getKind() == CheckPatternPredicate;
365 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
368 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
369 virtual bool isEqualImpl(const Matcher *M) const {
370 return cast<CheckPatternPredicateMatcher>(M)->getPredicate() == Predicate;
372 virtual unsigned getHashImpl() const;
375 /// CheckPredicateMatcher - This checks the target-specific predicate to
376 /// see if the node is acceptable.
377 class CheckPredicateMatcher : public Matcher {
380 CheckPredicateMatcher(StringRef predname)
381 : Matcher(CheckPredicate), PredName(predname) {}
383 StringRef getPredicateName() const { return PredName; }
385 static inline bool classof(const Matcher *N) {
386 return N->getKind() == CheckPredicate;
390 //virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
393 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
394 virtual bool isEqualImpl(const Matcher *M) const {
395 return cast<CheckPredicateMatcher>(M)->PredName == PredName;
397 virtual unsigned getHashImpl() const;
401 /// CheckOpcodeMatcher - This checks to see if the current node has the
402 /// specified opcode, if not it fails to match.
403 class CheckOpcodeMatcher : public Matcher {
404 const SDNodeInfo &Opcode;
406 CheckOpcodeMatcher(const SDNodeInfo &opcode)
407 : Matcher(CheckOpcode), Opcode(opcode) {}
409 const SDNodeInfo &getOpcode() const { return Opcode; }
411 static inline bool classof(const Matcher *N) {
412 return N->getKind() == CheckOpcode;
415 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
418 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
419 virtual bool isEqualImpl(const Matcher *M) const;
420 virtual unsigned getHashImpl() const;
421 virtual bool isContradictoryImpl(const Matcher *M) const;
424 /// SwitchOpcodeMatcher - Switch based on the current node's opcode, dispatching
425 /// to one matcher per opcode. If the opcode doesn't match any of the cases,
426 /// then the match fails. This is semantically equivalent to a Scope node where
427 /// every child does a CheckOpcode, but is much faster.
428 class SwitchOpcodeMatcher : public Matcher {
429 SmallVector<std::pair<const SDNodeInfo*, Matcher*>, 8> Cases;
431 SwitchOpcodeMatcher(const std::pair<const SDNodeInfo*, Matcher*> *cases,
433 : Matcher(SwitchOpcode), Cases(cases, cases+numcases) {}
435 static inline bool classof(const Matcher *N) {
436 return N->getKind() == SwitchOpcode;
439 unsigned getNumCases() const { return Cases.size(); }
441 const SDNodeInfo &getCaseOpcode(unsigned i) const { return *Cases[i].first; }
442 Matcher *getCaseMatcher(unsigned i) { return Cases[i].second; }
443 const Matcher *getCaseMatcher(unsigned i) const { return Cases[i].second; }
446 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
447 virtual bool isEqualImpl(const Matcher *M) const { return false; }
448 virtual unsigned getHashImpl() const { return 4123; }
451 /// CheckTypeMatcher - This checks to see if the current node has the
452 /// specified type, if not it fails to match.
453 class CheckTypeMatcher : public Matcher {
454 MVT::SimpleValueType Type;
456 CheckTypeMatcher(MVT::SimpleValueType type)
457 : Matcher(CheckType), Type(type) {}
459 MVT::SimpleValueType getType() const { return Type; }
461 static inline bool classof(const Matcher *N) {
462 return N->getKind() == CheckType;
465 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
468 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
469 virtual bool isEqualImpl(const Matcher *M) const {
470 return cast<CheckTypeMatcher>(M)->Type == Type;
472 virtual unsigned getHashImpl() const { return Type; }
473 virtual bool isContradictoryImpl(const Matcher *M) const;
476 /// SwitchTypeMatcher - Switch based on the current node's type, dispatching
477 /// to one matcher per case. If the type doesn't match any of the cases,
478 /// then the match fails. This is semantically equivalent to a Scope node where
479 /// every child does a CheckType, but is much faster.
480 class SwitchTypeMatcher : public Matcher {
481 SmallVector<std::pair<MVT::SimpleValueType, Matcher*>, 8> Cases;
483 SwitchTypeMatcher(const std::pair<MVT::SimpleValueType, Matcher*> *cases,
485 : Matcher(SwitchType), Cases(cases, cases+numcases) {}
487 static inline bool classof(const Matcher *N) {
488 return N->getKind() == SwitchType;
491 unsigned getNumCases() const { return Cases.size(); }
493 MVT::SimpleValueType getCaseType(unsigned i) const { return Cases[i].first; }
494 Matcher *getCaseMatcher(unsigned i) { return Cases[i].second; }
495 const Matcher *getCaseMatcher(unsigned i) const { return Cases[i].second; }
498 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
499 virtual bool isEqualImpl(const Matcher *M) const { return false; }
500 virtual unsigned getHashImpl() const { return 4123; }
504 /// CheckChildTypeMatcher - This checks to see if a child node has the
505 /// specified type, if not it fails to match.
506 class CheckChildTypeMatcher : public Matcher {
508 MVT::SimpleValueType Type;
510 CheckChildTypeMatcher(unsigned childno, MVT::SimpleValueType type)
511 : Matcher(CheckChildType), ChildNo(childno), Type(type) {}
513 unsigned getChildNo() const { return ChildNo; }
514 MVT::SimpleValueType getType() const { return Type; }
516 static inline bool classof(const Matcher *N) {
517 return N->getKind() == CheckChildType;
520 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
523 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
524 virtual bool isEqualImpl(const Matcher *M) const {
525 return cast<CheckChildTypeMatcher>(M)->ChildNo == ChildNo &&
526 cast<CheckChildTypeMatcher>(M)->Type == Type;
528 virtual unsigned getHashImpl() const { return (Type << 3) | ChildNo; }
529 virtual bool isContradictoryImpl(const Matcher *M) const;
533 /// CheckIntegerMatcher - This checks to see if the current node is a
534 /// ConstantSDNode with the specified integer value, if not it fails to match.
535 class CheckIntegerMatcher : public Matcher {
538 CheckIntegerMatcher(int64_t value)
539 : Matcher(CheckInteger), Value(value) {}
541 int64_t getValue() const { return Value; }
543 static inline bool classof(const Matcher *N) {
544 return N->getKind() == CheckInteger;
547 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
550 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
551 virtual bool isEqualImpl(const Matcher *M) const {
552 return cast<CheckIntegerMatcher>(M)->Value == Value;
554 virtual unsigned getHashImpl() const { return Value; }
555 virtual bool isContradictoryImpl(const Matcher *M) const;
558 /// CheckCondCodeMatcher - This checks to see if the current node is a
559 /// CondCodeSDNode with the specified condition, if not it fails to match.
560 class CheckCondCodeMatcher : public Matcher {
561 StringRef CondCodeName;
563 CheckCondCodeMatcher(StringRef condcodename)
564 : Matcher(CheckCondCode), CondCodeName(condcodename) {}
566 StringRef getCondCodeName() const { return CondCodeName; }
568 static inline bool classof(const Matcher *N) {
569 return N->getKind() == CheckCondCode;
572 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
575 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
576 virtual bool isEqualImpl(const Matcher *M) const {
577 return cast<CheckCondCodeMatcher>(M)->CondCodeName == CondCodeName;
579 virtual unsigned getHashImpl() const;
582 /// CheckValueTypeMatcher - This checks to see if the current node is a
583 /// VTSDNode with the specified type, if not it fails to match.
584 class CheckValueTypeMatcher : public Matcher {
587 CheckValueTypeMatcher(StringRef type_name)
588 : Matcher(CheckValueType), TypeName(type_name) {}
590 StringRef getTypeName() const { return TypeName; }
592 static inline bool classof(const Matcher *N) {
593 return N->getKind() == CheckValueType;
596 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
599 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
600 virtual bool isEqualImpl(const Matcher *M) const {
601 return cast<CheckValueTypeMatcher>(M)->TypeName == TypeName;
603 virtual unsigned getHashImpl() const;
608 /// CheckComplexPatMatcher - This node runs the specified ComplexPattern on
609 /// the current node.
610 class CheckComplexPatMatcher : public Matcher {
611 const ComplexPattern &Pattern;
612 /// FirstResult - This is the first slot in the RecordedNodes list that the
613 /// result of the match populates.
614 unsigned FirstResult;
616 CheckComplexPatMatcher(const ComplexPattern &pattern, unsigned firstresult)
617 : Matcher(CheckComplexPat), Pattern(pattern), FirstResult(firstresult) {}
619 const ComplexPattern &getPattern() const { return Pattern; }
620 unsigned getFirstResult() const { return FirstResult; }
622 static inline bool classof(const Matcher *N) {
623 return N->getKind() == CheckComplexPat;
626 // Not safe to move a pattern predicate past a complex pattern.
627 virtual bool isSafeToReorderWithPatternPredicate() const { return false; }
630 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
631 virtual bool isEqualImpl(const Matcher *M) const {
632 return &cast<CheckComplexPatMatcher>(M)->Pattern == &Pattern;
634 virtual unsigned getHashImpl() const {
635 return (unsigned)(intptr_t)&Pattern;
639 /// CheckAndImmMatcher - This checks to see if the current node is an 'and'
640 /// with something equivalent to the specified immediate.
641 class CheckAndImmMatcher : public Matcher {
644 CheckAndImmMatcher(int64_t value)
645 : Matcher(CheckAndImm), Value(value) {}
647 int64_t getValue() const { return Value; }
649 static inline bool classof(const Matcher *N) {
650 return N->getKind() == CheckAndImm;
653 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
656 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
657 virtual bool isEqualImpl(const Matcher *M) const {
658 return cast<CheckAndImmMatcher>(M)->Value == Value;
660 virtual unsigned getHashImpl() const { return Value; }
663 /// CheckOrImmMatcher - This checks to see if the current node is an 'and'
664 /// with something equivalent to the specified immediate.
665 class CheckOrImmMatcher : public Matcher {
668 CheckOrImmMatcher(int64_t value)
669 : Matcher(CheckOrImm), Value(value) {}
671 int64_t getValue() const { return Value; }
673 static inline bool classof(const Matcher *N) {
674 return N->getKind() == CheckOrImm;
677 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
680 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
681 virtual bool isEqualImpl(const Matcher *M) const {
682 return cast<CheckOrImmMatcher>(M)->Value == Value;
684 virtual unsigned getHashImpl() const { return Value; }
687 /// CheckFoldableChainNodeMatcher - This checks to see if the current node
688 /// (which defines a chain operand) is safe to fold into a larger pattern.
689 class CheckFoldableChainNodeMatcher : public Matcher {
691 CheckFoldableChainNodeMatcher()
692 : Matcher(CheckFoldableChainNode) {}
694 static inline bool classof(const Matcher *N) {
695 return N->getKind() == CheckFoldableChainNode;
698 virtual bool isSafeToReorderWithPatternPredicate() const { return true; }
701 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
702 virtual bool isEqualImpl(const Matcher *M) const { return true; }
703 virtual unsigned getHashImpl() const { return 0; }
706 /// EmitIntegerMatcher - This creates a new TargetConstant.
707 class EmitIntegerMatcher : public Matcher {
709 MVT::SimpleValueType VT;
711 EmitIntegerMatcher(int64_t val, MVT::SimpleValueType vt)
712 : Matcher(EmitInteger), Val(val), VT(vt) {}
714 int64_t getValue() const { return Val; }
715 MVT::SimpleValueType getVT() const { return VT; }
717 static inline bool classof(const Matcher *N) {
718 return N->getKind() == EmitInteger;
722 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
723 virtual bool isEqualImpl(const Matcher *M) const {
724 return cast<EmitIntegerMatcher>(M)->Val == Val &&
725 cast<EmitIntegerMatcher>(M)->VT == VT;
727 virtual unsigned getHashImpl() const { return (Val << 4) | VT; }
730 /// EmitStringIntegerMatcher - A target constant whose value is represented
732 class EmitStringIntegerMatcher : public Matcher {
734 MVT::SimpleValueType VT;
736 EmitStringIntegerMatcher(const std::string &val, MVT::SimpleValueType vt)
737 : Matcher(EmitStringInteger), Val(val), VT(vt) {}
739 const std::string &getValue() const { return Val; }
740 MVT::SimpleValueType getVT() const { return VT; }
742 static inline bool classof(const Matcher *N) {
743 return N->getKind() == EmitStringInteger;
747 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
748 virtual bool isEqualImpl(const Matcher *M) const {
749 return cast<EmitStringIntegerMatcher>(M)->Val == Val &&
750 cast<EmitStringIntegerMatcher>(M)->VT == VT;
752 virtual unsigned getHashImpl() const;
755 /// EmitRegisterMatcher - This creates a new TargetConstant.
756 class EmitRegisterMatcher : public Matcher {
757 /// Reg - The def for the register that we're emitting. If this is null, then
758 /// this is a reference to zero_reg.
760 MVT::SimpleValueType VT;
762 EmitRegisterMatcher(Record *reg, MVT::SimpleValueType vt)
763 : Matcher(EmitRegister), Reg(reg), VT(vt) {}
765 Record *getReg() const { return Reg; }
766 MVT::SimpleValueType getVT() const { return VT; }
768 static inline bool classof(const Matcher *N) {
769 return N->getKind() == EmitRegister;
773 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
774 virtual bool isEqualImpl(const Matcher *M) const {
775 return cast<EmitRegisterMatcher>(M)->Reg == Reg &&
776 cast<EmitRegisterMatcher>(M)->VT == VT;
778 virtual unsigned getHashImpl() const {
779 return ((unsigned)(intptr_t)Reg) << 4 | VT;
783 /// EmitConvertToTargetMatcher - Emit an operation that reads a specified
784 /// recorded node and converts it from being a ISD::Constant to
785 /// ISD::TargetConstant, likewise for ConstantFP.
786 class EmitConvertToTargetMatcher : public Matcher {
789 EmitConvertToTargetMatcher(unsigned slot)
790 : Matcher(EmitConvertToTarget), Slot(slot) {}
792 unsigned getSlot() const { return Slot; }
794 static inline bool classof(const Matcher *N) {
795 return N->getKind() == EmitConvertToTarget;
799 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
800 virtual bool isEqualImpl(const Matcher *M) const {
801 return cast<EmitConvertToTargetMatcher>(M)->Slot == Slot;
803 virtual unsigned getHashImpl() const { return Slot; }
806 /// EmitMergeInputChainsMatcher - Emit a node that merges a list of input
807 /// chains together with a token factor. The list of nodes are the nodes in the
808 /// matched pattern that have chain input/outputs. This node adds all input
809 /// chains of these nodes if they are not themselves a node in the pattern.
810 class EmitMergeInputChainsMatcher : public Matcher {
811 SmallVector<unsigned, 3> ChainNodes;
813 EmitMergeInputChainsMatcher(const unsigned *nodes, unsigned NumNodes)
814 : Matcher(EmitMergeInputChains), ChainNodes(nodes, nodes+NumNodes) {}
816 unsigned getNumNodes() const { return ChainNodes.size(); }
818 unsigned getNode(unsigned i) const {
819 assert(i < ChainNodes.size());
820 return ChainNodes[i];
823 static inline bool classof(const Matcher *N) {
824 return N->getKind() == EmitMergeInputChains;
828 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
829 virtual bool isEqualImpl(const Matcher *M) const {
830 return cast<EmitMergeInputChainsMatcher>(M)->ChainNodes == ChainNodes;
832 virtual unsigned getHashImpl() const;
835 /// EmitCopyToRegMatcher - Emit a CopyToReg node from a value to a physreg,
836 /// pushing the chain and flag results.
838 class EmitCopyToRegMatcher : public Matcher {
839 unsigned SrcSlot; // Value to copy into the physreg.
842 EmitCopyToRegMatcher(unsigned srcSlot, Record *destPhysReg)
843 : Matcher(EmitCopyToReg), SrcSlot(srcSlot), DestPhysReg(destPhysReg) {}
845 unsigned getSrcSlot() const { return SrcSlot; }
846 Record *getDestPhysReg() const { return DestPhysReg; }
848 static inline bool classof(const Matcher *N) {
849 return N->getKind() == EmitCopyToReg;
853 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
854 virtual bool isEqualImpl(const Matcher *M) const {
855 return cast<EmitCopyToRegMatcher>(M)->SrcSlot == SrcSlot &&
856 cast<EmitCopyToRegMatcher>(M)->DestPhysReg == DestPhysReg;
858 virtual unsigned getHashImpl() const {
859 return SrcSlot ^ ((unsigned)(intptr_t)DestPhysReg << 4);
865 /// EmitNodeXFormMatcher - Emit an operation that runs an SDNodeXForm on a
866 /// recorded node and records the result.
867 class EmitNodeXFormMatcher : public Matcher {
871 EmitNodeXFormMatcher(unsigned slot, Record *nodeXForm)
872 : Matcher(EmitNodeXForm), Slot(slot), NodeXForm(nodeXForm) {}
874 unsigned getSlot() const { return Slot; }
875 Record *getNodeXForm() const { return NodeXForm; }
877 static inline bool classof(const Matcher *N) {
878 return N->getKind() == EmitNodeXForm;
882 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
883 virtual bool isEqualImpl(const Matcher *M) const {
884 return cast<EmitNodeXFormMatcher>(M)->Slot == Slot &&
885 cast<EmitNodeXFormMatcher>(M)->NodeXForm == NodeXForm;
887 virtual unsigned getHashImpl() const {
888 return Slot ^ ((unsigned)(intptr_t)NodeXForm << 4);
892 /// EmitNodeMatcherCommon - Common class shared between EmitNode and
894 class EmitNodeMatcherCommon : public Matcher {
895 std::string OpcodeName;
896 const SmallVector<MVT::SimpleValueType, 3> VTs;
897 const SmallVector<unsigned, 6> Operands;
898 bool HasChain, HasInFlag, HasOutFlag, HasMemRefs;
900 /// NumFixedArityOperands - If this is a fixed arity node, this is set to -1.
901 /// If this is a varidic node, this is set to the number of fixed arity
902 /// operands in the root of the pattern. The rest are appended to this node.
903 int NumFixedArityOperands;
905 EmitNodeMatcherCommon(const std::string &opcodeName,
906 const MVT::SimpleValueType *vts, unsigned numvts,
907 const unsigned *operands, unsigned numops,
908 bool hasChain, bool hasInFlag, bool hasOutFlag,
910 int numfixedarityoperands, bool isMorphNodeTo)
911 : Matcher(isMorphNodeTo ? MorphNodeTo : EmitNode), OpcodeName(opcodeName),
912 VTs(vts, vts+numvts), Operands(operands, operands+numops),
913 HasChain(hasChain), HasInFlag(hasInFlag), HasOutFlag(hasOutFlag),
914 HasMemRefs(hasmemrefs), NumFixedArityOperands(numfixedarityoperands) {}
916 const std::string &getOpcodeName() const { return OpcodeName; }
918 unsigned getNumVTs() const { return VTs.size(); }
919 MVT::SimpleValueType getVT(unsigned i) const {
920 assert(i < VTs.size());
924 unsigned getNumOperands() const { return Operands.size(); }
925 unsigned getOperand(unsigned i) const {
926 assert(i < Operands.size());
930 const SmallVectorImpl<MVT::SimpleValueType> &getVTList() const { return VTs; }
931 const SmallVectorImpl<unsigned> &getOperandList() const { return Operands; }
934 bool hasChain() const { return HasChain; }
935 bool hasInFlag() const { return HasInFlag; }
936 bool hasOutFlag() const { return HasOutFlag; }
937 bool hasMemRefs() const { return HasMemRefs; }
938 int getNumFixedArityOperands() const { return NumFixedArityOperands; }
940 static inline bool classof(const Matcher *N) {
941 return N->getKind() == EmitNode || N->getKind() == MorphNodeTo;
945 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
946 virtual bool isEqualImpl(const Matcher *M) const;
947 virtual unsigned getHashImpl() const;
950 /// EmitNodeMatcher - This signals a successful match and generates a node.
951 class EmitNodeMatcher : public EmitNodeMatcherCommon {
952 unsigned FirstResultSlot;
954 EmitNodeMatcher(const std::string &opcodeName,
955 const MVT::SimpleValueType *vts, unsigned numvts,
956 const unsigned *operands, unsigned numops,
957 bool hasChain, bool hasInFlag, bool hasOutFlag,
959 int numfixedarityoperands, unsigned firstresultslot)
960 : EmitNodeMatcherCommon(opcodeName, vts, numvts, operands, numops, hasChain,
961 hasInFlag, hasOutFlag, hasmemrefs,
962 numfixedarityoperands, false),
963 FirstResultSlot(firstresultslot) {}
965 unsigned getFirstResultSlot() const { return FirstResultSlot; }
967 static inline bool classof(const Matcher *N) {
968 return N->getKind() == EmitNode;
973 class MorphNodeToMatcher : public EmitNodeMatcherCommon {
974 const PatternToMatch &Pattern;
976 MorphNodeToMatcher(const std::string &opcodeName,
977 const MVT::SimpleValueType *vts, unsigned numvts,
978 const unsigned *operands, unsigned numops,
979 bool hasChain, bool hasInFlag, bool hasOutFlag,
981 int numfixedarityoperands, const PatternToMatch &pattern)
982 : EmitNodeMatcherCommon(opcodeName, vts, numvts, operands, numops, hasChain,
983 hasInFlag, hasOutFlag, hasmemrefs,
984 numfixedarityoperands, true),
988 const PatternToMatch &getPattern() const { return Pattern; }
990 static inline bool classof(const Matcher *N) {
991 return N->getKind() == MorphNodeTo;
995 /// MarkFlagResultsMatcher - This node indicates which non-root nodes in the
996 /// pattern produce flags. This allows CompleteMatchMatcher to update them
997 /// with the output flag of the resultant code.
998 class MarkFlagResultsMatcher : public Matcher {
999 SmallVector<unsigned, 3> FlagResultNodes;
1001 MarkFlagResultsMatcher(const unsigned *nodes, unsigned NumNodes)
1002 : Matcher(MarkFlagResults), FlagResultNodes(nodes, nodes+NumNodes) {}
1004 unsigned getNumNodes() const { return FlagResultNodes.size(); }
1006 unsigned getNode(unsigned i) const {
1007 assert(i < FlagResultNodes.size());
1008 return FlagResultNodes[i];
1011 static inline bool classof(const Matcher *N) {
1012 return N->getKind() == MarkFlagResults;
1016 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
1017 virtual bool isEqualImpl(const Matcher *M) const {
1018 return cast<MarkFlagResultsMatcher>(M)->FlagResultNodes == FlagResultNodes;
1020 virtual unsigned getHashImpl() const;
1023 /// CompleteMatchMatcher - Complete a match by replacing the results of the
1024 /// pattern with the newly generated nodes. This also prints a comment
1025 /// indicating the source and dest patterns.
1026 class CompleteMatchMatcher : public Matcher {
1027 SmallVector<unsigned, 2> Results;
1028 const PatternToMatch &Pattern;
1030 CompleteMatchMatcher(const unsigned *results, unsigned numresults,
1031 const PatternToMatch &pattern)
1032 : Matcher(CompleteMatch), Results(results, results+numresults),
1035 unsigned getNumResults() const { return Results.size(); }
1036 unsigned getResult(unsigned R) const { return Results[R]; }
1037 const PatternToMatch &getPattern() const { return Pattern; }
1039 static inline bool classof(const Matcher *N) {
1040 return N->getKind() == CompleteMatch;
1044 virtual void printImpl(raw_ostream &OS, unsigned indent) const;
1045 virtual bool isEqualImpl(const Matcher *M) const {
1046 return cast<CompleteMatchMatcher>(M)->Results == Results &&
1047 &cast<CompleteMatchMatcher>(M)->Pattern == &Pattern;
1049 virtual unsigned getHashImpl() const;
1052 } // end namespace llvm