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https://github.com/c64scene-ar/llvm-6502.git
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09bc029865
structure that represents a mapping without any dependencies on SubRegIndex numbering. This brings us closer to being able to remove the explicit SubRegIndex numbering, and it is now possible to specify any mapping without inventing *_INVALID register classes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104563 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
//===- CodeGenRegisters.h - Register and RegisterClass Info -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines structures to encapsulate information gleaned from the
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// target register and register class definitions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CODEGEN_REGISTERS_H
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#define CODEGEN_REGISTERS_H
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#include "llvm/CodeGen/ValueTypes.h"
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#include "llvm/ADT/DenseMap.h"
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#include <string>
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#include <vector>
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#include <cstdlib>
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namespace llvm {
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class Record;
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/// CodeGenRegister - Represents a register definition.
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struct CodeGenRegister {
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Record *TheDef;
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const std::string &getName() const;
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unsigned DeclaredSpillSize, DeclaredSpillAlignment;
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CodeGenRegister(Record *R);
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};
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struct CodeGenRegisterClass {
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Record *TheDef;
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std::string Namespace;
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std::vector<Record*> Elements;
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std::vector<MVT::SimpleValueType> VTs;
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unsigned SpillSize;
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unsigned SpillAlignment;
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int CopyCost;
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// Map SubRegIndex -> RegisterClass
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DenseMap<Record*,Record*> SubRegClasses;
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std::string MethodProtos, MethodBodies;
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const std::string &getName() const;
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const std::vector<MVT::SimpleValueType> &getValueTypes() const {return VTs;}
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unsigned getNumValueTypes() const { return VTs.size(); }
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MVT::SimpleValueType getValueTypeNum(unsigned VTNum) const {
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if (VTNum < VTs.size())
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return VTs[VTNum];
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assert(0 && "VTNum greater than number of ValueTypes in RegClass!");
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abort();
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}
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CodeGenRegisterClass(Record *R);
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};
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}
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#endif
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