TargetSubtargetInfo.h revision 8749b61178228ba1fb2668034d79da1b247173d7
1fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman//==-- llvm/Target/TargetSubtarget.h - Target Information --------*- C++ -*-==// 2fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// 3fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// The LLVM Compiler Infrastructure 4fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 7fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// 8fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman//===----------------------------------------------------------------------===// 9fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// 10fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// This file describes the subtarget options of a Target machine. 11fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman// 12fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman//===----------------------------------------------------------------------===// 13fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman 14fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman#ifndef LLVM_TARGET_TARGETSUBTARGET_H 15fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman#define LLVM_TARGET_TARGETSUBTARGET_H 16fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman 17fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begemannamespace llvm { 18fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman 19fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman//===----------------------------------------------------------------------===// 20fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman/// 21fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman/// TargetSubtarget - Generic base class for all target subtargets. All 22fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman/// Target-specific options that control code generation and printing should 23fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman/// be exposed through a TargetSubtarget-derived class. 24fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman/// 25fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begemanclass TargetSubtarget { 26fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman TargetSubtarget(const TargetSubtarget&); // DO NOT IMPLEMENT 27fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman void operator=(const TargetSubtarget&); // DO NOT IMPLEMENT 28fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begemanprotected: // Can only create subclasses... 290e219eb9b8a2f6cb1128066584b06c6bd1b51238Nate Begeman TargetSubtarget(); 30fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begemanpublic: 31fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman virtual ~TargetSubtarget(); 328749b61178228ba1fb2668034d79da1b247173d7Dan Gohman 338749b61178228ba1fb2668034d79da1b247173d7Dan Gohman /// getSpecialAddressLatency - For targets where it is beneficial to 348749b61178228ba1fb2668034d79da1b247173d7Dan Gohman /// backschedule instructions that compute addresses, return a value 358749b61178228ba1fb2668034d79da1b247173d7Dan Gohman /// indicating the number of scheduling cycles of backscheduling that 368749b61178228ba1fb2668034d79da1b247173d7Dan Gohman /// should be attempted. 378749b61178228ba1fb2668034d79da1b247173d7Dan Gohman virtual unsigned getSpecialAddressLatency() const { return 0; } 38fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman}; 39fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman 40fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman} // End llvm namespace 41fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman 42fb5792f416089d8d8d0c6ee62c1f41a55d2cf75dNate Begeman#endif 43