-//===- CodeGenWrappers.h - Code Generation Class Wrappers -------*- C++ -*-===//
-//
+//===- CodeGenTarget.h - Target Class Wrapper -------------------*- C++ -*-===//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
-// These classes wrap target description classes used by the various code
-// generation TableGen backends. This makes it easier to access the data and
-// provides a single place that needs to check it for validity. All of these
-// classes throw exceptions on error conditions.
+// This file defines wrappers for the Target class and related global
+// functionality. This makes it easier to access the data and provides a single
+// place that needs to check it for validity. All of these classes throw
+// exceptions on error conditions.
//
//===----------------------------------------------------------------------===//
-#ifndef CODEGENWRAPPERS_H
-#define CODEGENWRAPPERS_H
+#ifndef CODEGEN_TARGET_H
+#define CODEGEN_TARGET_H
-#include "llvm/CodeGen/ValueTypes.h"
+#include "CodeGenRegisters.h"
+#include "CodeGenInstruction.h"
#include <iosfwd>
-#include <string>
-#include <vector>
+#include <map>
+
+namespace llvm {
+
class Record;
class RecordKeeper;
+struct CodeGenRegister;
/// getValueType - Return the MVT::ValueType that the specified TableGen record
/// corresponds to.
std::vector<Record*> CalleeSavedRegisters;
MVT::ValueType PointerType;
+ mutable std::map<std::string, CodeGenInstruction> Instructions;
+ mutable std::vector<CodeGenRegister> Registers;
+ mutable std::vector<CodeGenRegisterClass> RegisterClasses;
+ mutable std::vector<MVT::ValueType> LegalValueTypes;
+ void ReadRegisters() const;
+ void ReadRegisterClasses() const;
+ void ReadInstructions() const;
+ void ReadLegalValueTypes() const;
public:
CodeGenTarget();
MVT::ValueType getPointerType() const { return PointerType; }
- // getInstructionSet - Return the InstructionSet object...
+ /// getInstructionSet - Return the InstructionSet object.
+ ///
Record *getInstructionSet() const;
- // getInstructionSet - Return the CodeGenInstructionSet object for this
- // target, lazily reading it from the record keeper as needed.
- // CodeGenInstructionSet *getInstructionSet -
+ /// getAsmWriter - Return the AssemblyWriter definition for this target.
+ ///
+ Record *getAsmWriter() const;
+
+ const std::vector<CodeGenRegister> &getRegisters() const {
+ if (Registers.empty()) ReadRegisters();
+ return Registers;
+ }
+
+ const std::vector<CodeGenRegisterClass> &getRegisterClasses() const {
+ if (RegisterClasses.empty()) ReadRegisterClasses();
+ return RegisterClasses;
+ }
+
+ const std::vector<MVT::ValueType> &getLegalValueTypes() const {
+ if (LegalValueTypes.empty()) ReadLegalValueTypes();
+ return LegalValueTypes;
+ }
+
+ /// isLegalValueType - Return true if the specified value type is natively
+ /// supported by the target (i.e. there are registers that directly hold it).
+ bool isLegalValueType(MVT::ValueType VT) const {
+ const std::vector<MVT::ValueType> &LegalVTs = getLegalValueTypes();
+ for (unsigned i = 0, e = LegalVTs.size(); i != e; ++i)
+ if (LegalVTs[i] == VT) return true;
+ return false;
+ }
+
+ /// getInstructions - Return all of the instructions defined for this target.
+ ///
+ const std::map<std::string, CodeGenInstruction> &getInstructions() const {
+ if (Instructions.empty()) ReadInstructions();
+ return Instructions;
+ }
+
+ CodeGenInstruction &getInstruction(const std::string &Name) const {
+ const std::map<std::string, CodeGenInstruction> &Insts = getInstructions();
+ assert(Insts.count(Name) && "Not an instruction!");
+ return const_cast<CodeGenInstruction&>(Insts.find(Name)->second);
+ }
+
+ typedef std::map<std::string,
+ CodeGenInstruction>::const_iterator inst_iterator;
+ inst_iterator inst_begin() const { return getInstructions().begin(); }
+ inst_iterator inst_end() const { return Instructions.end(); }
+
+ /// getInstructionsByEnumValue - Return all of the instructions defined by the
+ /// target, ordered by their enum value.
+ void getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
+ &NumberedInstructions);
+
+
+ /// getPHIInstruction - Return the designated PHI instruction.
+ ///
+ const CodeGenInstruction &getPHIInstruction() const;
+
+ /// isLittleEndianEncoding - are instruction bit patterns defined as [0..n]?
+ ///
+ bool isLittleEndianEncoding() const;
};
+} // End llvm namespace
+
#endif