utils/TableGen/CodeGenRegisters.h

   1 //===- CodeGenRegisters.h - Register and RegisterClass Info -----*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines structures to encapsulate information gleaned from the
  11 // target register and register class definitions.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef CODEGEN_REGISTERS_H
  16 #define CODEGEN_REGISTERS_H
  17
  18 #include "llvm/CodeGen/ValueTypes.h"
  19 #include <string>
  20 #include <vector>
  21 #include <cstdlib>
  22
  23 namespace llvm {
  24   class Record;
  25
  26   /// CodeGenRegister - Represents a register definition.
  27   struct CodeGenRegister {
  28     Record *TheDef;
  29     const std::string &getName() const;
  30     unsigned DeclaredSpillSize, DeclaredSpillAlignment;
  31     CodeGenRegister(Record *R);
  32   };
  33
  34
  35   struct CodeGenRegisterClass {
  36     Record *TheDef;
  37     std::string Namespace;
  38     std::vector<Record*> Elements;
  39     std::vector<MVT::SimpleValueType> VTs;
  40     unsigned SpillSize;
  41     unsigned SpillAlignment;
  42     int CopyCost;
  43     std::vector<Record*> SubRegClasses;
  44     std::string MethodProtos, MethodBodies;
  45
  46     const std::string &getName() const;
  47     const std::vector<MVT::SimpleValueType> &getValueTypes() const {return VTs;}
  48     unsigned getNumValueTypes() const { return VTs.size(); }
  49
  50     MVT::SimpleValueType getValueTypeNum(unsigned VTNum) const {
  51       if (VTNum < VTs.size())
  52         return VTs[VTNum];
  53       assert(0 && "VTNum greater than number of ValueTypes in RegClass!");
  54       abort();
  55     }
  56
  57     CodeGenRegisterClass(Record *R);
  58   };
  59 }
  60
  61 #endif