1 //===- CodeGenTarget.h - Target Class Wrapper -------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines wrappers for the Target class and related global
11 // functionality. This makes it easier to access the data and provides a single
12 // place that needs to check it for validity. All of these classes throw
13 // exceptions on error conditions.
15 //===----------------------------------------------------------------------===//
17 #ifndef CODEGEN_TARGET_H
18 #define CODEGEN_TARGET_H
20 #include "CodeGenRegisters.h"
21 #include "CodeGenInstruction.h"
29 class CodeGenRegister;
31 /// getValueType - Return the MVT::ValueType that the specified TableGen record
33 MVT::ValueType getValueType(Record *Rec);
35 std::ostream &operator<<(std::ostream &OS, MVT::ValueType T);
36 std::string getName(MVT::ValueType T);
37 std::string getEnumName(MVT::ValueType T);
40 /// CodeGenTarget - This class corresponds to the Target class in the .td files.
44 std::vector<Record*> CalleeSavedRegisters;
45 MVT::ValueType PointerType;
47 mutable std::map<std::string, CodeGenInstruction> Instructions;
48 mutable std::vector<CodeGenRegister> Registers;
49 void ReadInstructions() const;
50 void ReadRegisters() const;
54 Record *getTargetRecord() const { return TargetRec; }
55 const std::string &getName() const;
57 const std::vector<Record*> &getCalleeSavedRegisters() const {
58 return CalleeSavedRegisters;
61 MVT::ValueType getPointerType() const { return PointerType; }
63 /// getInstructionSet - Return the InstructionSet object.
65 Record *getInstructionSet() const;
67 /// getAsmWriter - Return the AssemblyWriter definition for this target.
69 Record *getAsmWriter() const;
71 const std::vector<CodeGenRegister> &getRegisters() {
72 if (Registers.empty()) ReadRegisters();
76 /// getInstructions - Return all of the instructions defined for this target.
78 const std::map<std::string, CodeGenInstruction> &getInstructions() const {
79 if (Instructions.empty()) ReadInstructions();
83 typedef std::map<std::string,
84 CodeGenInstruction>::const_iterator inst_iterator;
85 inst_iterator inst_begin() const { return getInstructions().begin(); }
86 inst_iterator inst_end() const { return Instructions.end(); }
88 /// getPHIInstruction - Return the designated PHI instruction.
90 const CodeGenInstruction &getPHIInstruction() const;
93 } // End llvm namespace