mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-22 09:29:31 +00:00
8749b61178
especially in the case of addresses computed from loop induction variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61075 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
//==-- llvm/Target/TargetSubtarget.h - Target Information --------*- C++ -*-==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file describes the subtarget options of a Target machine.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TARGET_TARGETSUBTARGET_H
|
|
#define LLVM_TARGET_TARGETSUBTARGET_H
|
|
|
|
namespace llvm {
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// TargetSubtarget - Generic base class for all target subtargets. All
|
|
/// Target-specific options that control code generation and printing should
|
|
/// be exposed through a TargetSubtarget-derived class.
|
|
///
|
|
class TargetSubtarget {
|
|
TargetSubtarget(const TargetSubtarget&); // DO NOT IMPLEMENT
|
|
void operator=(const TargetSubtarget&); // DO NOT IMPLEMENT
|
|
protected: // Can only create subclasses...
|
|
TargetSubtarget();
|
|
public:
|
|
virtual ~TargetSubtarget();
|
|
|
|
/// getSpecialAddressLatency - For targets where it is beneficial to
|
|
/// backschedule instructions that compute addresses, return a value
|
|
/// indicating the number of scheduling cycles of backscheduling that
|
|
/// should be attempted.
|
|
virtual unsigned getSpecialAddressLatency() const { return 0; }
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|