PredicateExpander.h revision 341825 
1238582Smm//===--------------------- PredicateExpander.h ----------------------------===//
2238582Smm//
3238582Smm//                     The LLVM Compiler Infrastructure
4238582Smm//
5238582Smm// This file is distributed under the University of Illinois Open Source
6238582Smm// License. See LICENSE.TXT for details.
7238582Smm//
8238582Smm//===----------------------------------------------------------------------===//
9238582Smm/// \file
10238582Smm/// Functionalities used by the Tablegen backends to expand machine predicates.
11238582Smm///
12238582Smm/// See file llvm/Target/TargetInstrPredicate.td for a full list and description
13238582Smm/// of all the supported MCInstPredicate classes.
14238582Smm//
15238582Smm//===----------------------------------------------------------------------===//
16238582Smm
17238582Smm#ifndef LLVM_UTILS_TABLEGEN_PREDICATEEXPANDER_H
18238582Smm#define LLVM_UTILS_TABLEGEN_PREDICATEEXPANDER_H
19238582Smm
20238582Smm#include "llvm/ADT/StringRef.h"
21238582Smm#include "llvm/Support/FormattedStream.h"
22238582Smm#include "llvm/TableGen/Record.h"
23256004Spfg
24238582Smmnamespace llvm {
25238582Smm
26238582Smmclass formatted_raw_ostream;
27238582Smm
28238582Smmclass PredicateExpander {
29238582Smm  bool EmitCallsByRef;
30256004Spfg  bool NegatePredicate;
31256004Spfg  bool ExpandForMC;
32256004Spfg  unsigned IndentLevel;
33256004Spfg
34256004Spfg  PredicateExpander(const PredicateExpander &) = delete;
35  PredicateExpander &operator=(const PredicateExpander &) = delete;
36
37public:
38  PredicateExpander()
39      : EmitCallsByRef(true), NegatePredicate(false), ExpandForMC(false),
40        IndentLevel(1U) {}
41  bool isByRef() const { return EmitCallsByRef; }
42  bool shouldNegate() const { return NegatePredicate; }
43  bool shouldExpandForMC() const { return ExpandForMC; }
44  unsigned getIndentLevel() const { return IndentLevel; }
45
46  void setByRef(bool Value) { EmitCallsByRef = Value; }
47  void flipNegatePredicate() { NegatePredicate = !NegatePredicate; }
48  void setNegatePredicate(bool Value) { NegatePredicate = Value; }
49  void setExpandForMC(bool Value) { ExpandForMC = Value; }
50  void increaseIndentLevel() { ++IndentLevel; }
51  void decreaseIndentLevel() { --IndentLevel; }
52  void setIndentLevel(unsigned Level) { IndentLevel = Level; }
53
54  using RecVec = std::vector<Record *>;
55  void expandTrue(formatted_raw_ostream &OS);
56  void expandFalse(formatted_raw_ostream &OS);
57  void expandCheckImmOperand(formatted_raw_ostream &OS, int OpIndex,
58                             int ImmVal);
59  void expandCheckImmOperand(formatted_raw_ostream &OS, int OpIndex,
60                             StringRef ImmVal);
61  void expandCheckRegOperand(formatted_raw_ostream &OS, int OpIndex,
62                             const Record *Reg);
63  void expandCheckSameRegOperand(formatted_raw_ostream &OS, int First,
64                                 int Second);
65  void expandCheckNumOperands(formatted_raw_ostream &OS, int NumOps);
66  void expandCheckOpcode(formatted_raw_ostream &OS, const Record *Inst);
67
68  void expandCheckPseudo(formatted_raw_ostream &OS, const RecVec &Opcodes);
69  void expandCheckOpcode(formatted_raw_ostream &OS, const RecVec &Opcodes);
70  void expandPredicateSequence(formatted_raw_ostream &OS,
71                               const RecVec &Sequence, bool IsCheckAll);
72  void expandTIIFunctionCall(formatted_raw_ostream &OS, StringRef TargetName,
73                             StringRef MethodName);
74  void expandCheckIsRegOperand(formatted_raw_ostream &OS, int OpIndex);
75  void expandCheckIsImmOperand(formatted_raw_ostream &OS, int OpIndex);
76  void expandCheckInvalidRegOperand(formatted_raw_ostream &OS, int OpIndex);
77  void expandCheckFunctionPredicate(formatted_raw_ostream &OS,
78                                    StringRef MCInstFn,
79                                    StringRef MachineInstrFn);
80  void expandCheckNonPortable(formatted_raw_ostream &OS, StringRef CodeBlock);
81  void expandPredicate(formatted_raw_ostream &OS, const Record *Rec);
82};
83
84} // namespace llvm
85
86#endif
87