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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
124 lines
5.2 KiB
C++
124 lines
5.2 KiB
C++
//===--------------------- PredicateExpander.h ----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// Functionalities used by the Tablegen backends to expand machine predicates.
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///
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/// See file llvm/Target/TargetInstrPredicate.td for a full list and description
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/// of all the supported MCInstPredicate classes.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_UTILS_TABLEGEN_PREDICATEEXPANDER_H
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#define LLVM_UTILS_TABLEGEN_PREDICATEEXPANDER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/TableGen/Record.h"
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namespace llvm {
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class raw_ostream;
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class PredicateExpander {
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bool EmitCallsByRef;
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bool NegatePredicate;
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bool ExpandForMC;
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unsigned IndentLevel;
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StringRef TargetName;
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PredicateExpander(const PredicateExpander &) = delete;
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PredicateExpander &operator=(const PredicateExpander &) = delete;
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public:
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PredicateExpander(StringRef Target)
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: EmitCallsByRef(true), NegatePredicate(false), ExpandForMC(false),
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IndentLevel(1U), TargetName(Target) {}
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bool isByRef() const { return EmitCallsByRef; }
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bool shouldNegate() const { return NegatePredicate; }
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bool shouldExpandForMC() const { return ExpandForMC; }
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unsigned getIndentLevel() const { return IndentLevel; }
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StringRef getTargetName() const { return TargetName; }
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void setByRef(bool Value) { EmitCallsByRef = Value; }
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void flipNegatePredicate() { NegatePredicate = !NegatePredicate; }
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void setNegatePredicate(bool Value) { NegatePredicate = Value; }
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void setExpandForMC(bool Value) { ExpandForMC = Value; }
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void setIndentLevel(unsigned Level) { IndentLevel = Level; }
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void increaseIndentLevel() { ++IndentLevel; }
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void decreaseIndentLevel() { --IndentLevel; }
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using RecVec = std::vector<Record *>;
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void expandTrue(raw_ostream &OS);
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void expandFalse(raw_ostream &OS);
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void expandCheckImmOperand(raw_ostream &OS, int OpIndex, int ImmVal,
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StringRef FunctionMapper);
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void expandCheckImmOperand(raw_ostream &OS, int OpIndex, StringRef ImmVal,
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StringRef FunctionMapperer);
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void expandCheckImmOperandSimple(raw_ostream &OS, int OpIndex,
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StringRef FunctionMapper);
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void expandCheckRegOperand(raw_ostream &OS, int OpIndex, const Record *Reg,
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StringRef FunctionMapper);
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void expandCheckRegOperandSimple(raw_ostream &OS, int OpIndex,
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StringRef FunctionMapper);
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void expandCheckSameRegOperand(raw_ostream &OS, int First, int Second);
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void expandCheckNumOperands(raw_ostream &OS, int NumOps);
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void expandCheckOpcode(raw_ostream &OS, const Record *Inst);
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void expandCheckPseudo(raw_ostream &OS, const RecVec &Opcodes);
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void expandCheckOpcode(raw_ostream &OS, const RecVec &Opcodes);
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void expandPredicateSequence(raw_ostream &OS, const RecVec &Sequence,
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bool IsCheckAll);
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void expandTIIFunctionCall(raw_ostream &OS, StringRef MethodName);
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void expandCheckIsRegOperand(raw_ostream &OS, int OpIndex);
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void expandCheckIsImmOperand(raw_ostream &OS, int OpIndex);
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void expandCheckInvalidRegOperand(raw_ostream &OS, int OpIndex);
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void expandCheckFunctionPredicate(raw_ostream &OS, StringRef MCInstFn,
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StringRef MachineInstrFn);
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void expandCheckNonPortable(raw_ostream &OS, StringRef CodeBlock);
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void expandPredicate(raw_ostream &OS, const Record *Rec);
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void expandReturnStatement(raw_ostream &OS, const Record *Rec);
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void expandOpcodeSwitchCase(raw_ostream &OS, const Record *Rec);
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void expandOpcodeSwitchStatement(raw_ostream &OS, const RecVec &Cases,
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const Record *Default);
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void expandStatement(raw_ostream &OS, const Record *Rec);
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};
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// Forward declarations.
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class STIPredicateFunction;
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class OpcodeGroup;
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class STIPredicateExpander : public PredicateExpander {
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StringRef ClassPrefix;
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bool ExpandDefinition;
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STIPredicateExpander(const PredicateExpander &) = delete;
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STIPredicateExpander &operator=(const PredicateExpander &) = delete;
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void expandHeader(raw_ostream &OS, const STIPredicateFunction &Fn);
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void expandPrologue(raw_ostream &OS, const STIPredicateFunction &Fn);
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void expandOpcodeGroup(raw_ostream &OS, const OpcodeGroup &Group,
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bool ShouldUpdateOpcodeMask);
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void expandBody(raw_ostream &OS, const STIPredicateFunction &Fn);
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void expandEpilogue(raw_ostream &OS, const STIPredicateFunction &Fn);
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public:
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STIPredicateExpander(StringRef Target)
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: PredicateExpander(Target), ClassPrefix(), ExpandDefinition(false) {}
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bool shouldExpandDefinition() const { return ExpandDefinition; }
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StringRef getClassPrefix() const { return ClassPrefix; }
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void setClassPrefix(StringRef S) { ClassPrefix = S; }
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void setExpandDefinition(bool Value) { ExpandDefinition = Value; }
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void expandSTIPredicate(raw_ostream &OS, const STIPredicateFunction &Fn);
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};
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} // namespace llvm
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#endif
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