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| //===--------------------- PredicateExpander.h ----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
/// Functionalities used by the Tablegen backends to expand machine predicates.
///
/// See file llvm/Target/TargetInstrPredicate.td for a full list and description
/// of all the supported MCInstPredicate classes.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_UTILS_TABLEGEN_PREDICATEEXPANDER_H
#define LLVM_UTILS_TABLEGEN_PREDICATEEXPANDER_H
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TableGen/Record.h"
namespace llvm {
class raw_ostream;
class PredicateExpander {
bool EmitCallsByRef;
bool NegatePredicate;
bool ExpandForMC;
unsigned IndentLevel;
StringRef TargetName;
PredicateExpander(const PredicateExpander &) = delete;
PredicateExpander &operator=(const PredicateExpander &) = delete;
public:
PredicateExpander(StringRef Target)
: EmitCallsByRef(true), NegatePredicate(false), ExpandForMC(false),
IndentLevel(1U), TargetName(Target) {}
bool isByRef() const { return EmitCallsByRef; }
bool shouldNegate() const { return NegatePredicate; }
bool shouldExpandForMC() const { return ExpandForMC; }
unsigned getIndentLevel() const { return IndentLevel; }
StringRef getTargetName() const { return TargetName; }
void setByRef(bool Value) { EmitCallsByRef = Value; }
void flipNegatePredicate() { NegatePredicate = !NegatePredicate; }
void setNegatePredicate(bool Value) { NegatePredicate = Value; }
void setExpandForMC(bool Value) { ExpandForMC = Value; }
void setIndentLevel(unsigned Level) { IndentLevel = Level; }
void increaseIndentLevel() { ++IndentLevel; }
void decreaseIndentLevel() { --IndentLevel; }
using RecVec = std::vector<Record *>;
void expandTrue(raw_ostream &OS);
void expandFalse(raw_ostream &OS);
void expandCheckImmOperand(raw_ostream &OS, int OpIndex, int ImmVal,
StringRef FunctionMapper);
void expandCheckImmOperand(raw_ostream &OS, int OpIndex, StringRef ImmVal,
StringRef FunctionMapperer);
void expandCheckImmOperandSimple(raw_ostream &OS, int OpIndex,
StringRef FunctionMapper);
void expandCheckRegOperand(raw_ostream &OS, int OpIndex, const Record *Reg,
StringRef FunctionMapper);
void expandCheckRegOperandSimple(raw_ostream &OS, int OpIndex,
StringRef FunctionMapper);
void expandCheckSameRegOperand(raw_ostream &OS, int First, int Second);
void expandCheckNumOperands(raw_ostream &OS, int NumOps);
void expandCheckOpcode(raw_ostream &OS, const Record *Inst);
void expandCheckPseudo(raw_ostream &OS, const RecVec &Opcodes);
void expandCheckOpcode(raw_ostream &OS, const RecVec &Opcodes);
void expandPredicateSequence(raw_ostream &OS, const RecVec &Sequence,
bool IsCheckAll);
void expandTIIFunctionCall(raw_ostream &OS, StringRef MethodName);
void expandCheckIsRegOperand(raw_ostream &OS, int OpIndex);
void expandCheckIsImmOperand(raw_ostream &OS, int OpIndex);
void expandCheckInvalidRegOperand(raw_ostream &OS, int OpIndex);
void expandCheckFunctionPredicate(raw_ostream &OS, StringRef MCInstFn,
StringRef MachineInstrFn);
void expandCheckNonPortable(raw_ostream &OS, StringRef CodeBlock);
void expandPredicate(raw_ostream &OS, const Record *Rec);
void expandReturnStatement(raw_ostream &OS, const Record *Rec);
void expandOpcodeSwitchCase(raw_ostream &OS, const Record *Rec);
void expandOpcodeSwitchStatement(raw_ostream &OS, const RecVec &Cases,
const Record *Default);
void expandStatement(raw_ostream &OS, const Record *Rec);
};
// Forward declarations.
class STIPredicateFunction;
class OpcodeGroup;
class STIPredicateExpander : public PredicateExpander {
StringRef ClassPrefix;
bool ExpandDefinition;
STIPredicateExpander(const PredicateExpander &) = delete;
STIPredicateExpander &operator=(const PredicateExpander &) = delete;
void expandHeader(raw_ostream &OS, const STIPredicateFunction &Fn);
void expandPrologue(raw_ostream &OS, const STIPredicateFunction &Fn);
void expandOpcodeGroup(raw_ostream &OS, const OpcodeGroup &Group,
bool ShouldUpdateOpcodeMask);
void expandBody(raw_ostream &OS, const STIPredicateFunction &Fn);
void expandEpilogue(raw_ostream &OS, const STIPredicateFunction &Fn);
public:
STIPredicateExpander(StringRef Target)
: PredicateExpander(Target), ClassPrefix(), ExpandDefinition(false) {}
bool shouldExpandDefinition() const { return ExpandDefinition; }
StringRef getClassPrefix() const { return ClassPrefix; }
void setClassPrefix(StringRef S) { ClassPrefix = S; }
void setExpandDefinition(bool Value) { ExpandDefinition = Value; }
void expandSTIPredicate(raw_ostream &OS, const STIPredicateFunction &Fn);
};
} // namespace llvm
#endif
|