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 <string>
  19 #include <vector>
  20 #include "llvm/CodeGen/ValueTypes.h"
  21
  22 namespace llvm {
  23   class Record;
  24
  25   /// CodeGenRegister - Represents a register definition.
  26   struct CodeGenRegister {
  27     Record *TheDef;
  28     const std::string &getName() const;
  29     unsigned DeclaredSpillSize, DeclaredSpillAlignment;
  30     CodeGenRegister(Record *R);
  31   };
  32
  33
  34   struct CodeGenRegisterClass {
  35     Record *TheDef;
  36     std::string Namespace;
  37     std::vector<Record*> Elements;
  38     std::vector<MVT::ValueType> VTs;
  39     unsigned SpillSize;
  40     unsigned SpillAlignment;
  41     int CopyCost;
  42     std::vector<Record*> SubRegClasses;
  43     std::string MethodProtos, MethodBodies;
  44
  45     const std::string &getName() const;
  46     const std::vector<MVT::ValueType> &getValueTypes() const { return VTs; }
  47     unsigned getNumValueTypes() const { return VTs.size(); }
  48
  49     MVT::ValueType getValueTypeNum(unsigned VTNum) const {
  50       if (VTNum < VTs.size())
  51         return VTs[VTNum];
  52       assert(0 && "VTNum greater than number of ValueTypes in RegClass!");
  53       abort();
  54     }
  55
  56     CodeGenRegisterClass(Record *R);
  57   };
  58 }
  59
  60 #endif