mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-11 08:07:22 +00:00
59ee62d241
and MCSubtargetInfo. - Added methods to update subtarget features (used when targets automatically detect subtarget features or switch modes). - Teach X86Subtarget to update MCSubtargetInfo features bits since the MCSubtargetInfo layer can be shared with other modules. - These fixes .code 16 / .code 32 support since mode switch is updated in MCSubtargetInfo so MC code emitter can do the right thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134884 91177308-0d34-0410-b5e6-96231b3b80d8
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
//==-- llvm/MC/MCSubtargetInfo.h - Subtarget 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_MC_MCSUBTARGET_H
|
|
#define LLVM_MC_MCSUBTARGET_H
|
|
|
|
#include "llvm/MC/SubtargetFeature.h"
|
|
#include "llvm/MC/MCInstrItineraries.h"
|
|
#include <string>
|
|
|
|
namespace llvm {
|
|
|
|
class StringRef;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// MCSubtargetInfo - Generic base class for all target subtargets.
|
|
///
|
|
class MCSubtargetInfo {
|
|
std::string TargetTriple; // Target triple
|
|
const SubtargetFeatureKV *ProcFeatures; // Processor feature list
|
|
const SubtargetFeatureKV *ProcDesc; // Processor descriptions
|
|
const SubtargetInfoKV *ProcItins; // Scheduling itineraries
|
|
const InstrStage *Stages; // Instruction stages
|
|
const unsigned *OperandCycles; // Operand cycles
|
|
const unsigned *ForwardingPathes; // Forwarding pathes
|
|
unsigned NumFeatures; // Number of processor features
|
|
unsigned NumProcs; // Number of processors
|
|
uint64_t FeatureBits; // Feature bits for current CPU + FS
|
|
|
|
public:
|
|
void InitMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS,
|
|
const SubtargetFeatureKV *PF,
|
|
const SubtargetFeatureKV *PD,
|
|
const SubtargetInfoKV *PI, const InstrStage *IS,
|
|
const unsigned *OC, const unsigned *FP,
|
|
unsigned NF, unsigned NP);
|
|
|
|
/// getTargetTriple - Return the target triple string.
|
|
StringRef getTargetTriple() const {
|
|
return TargetTriple;
|
|
}
|
|
|
|
/// getFeatureBits - Return the feature bits.
|
|
///
|
|
uint64_t getFeatureBits() const {
|
|
return FeatureBits;
|
|
}
|
|
|
|
/// ReInitMCSubtargetInfo - Change CPU (and optionally supplemented with
|
|
/// feature string), recompute and return feature bits.
|
|
uint64_t ReInitMCSubtargetInfo(StringRef CPU, StringRef FS);
|
|
|
|
/// ToggleFeature - Toggle a feature and returns the re-computed feature
|
|
/// bits. This version does not change the implied bits.
|
|
uint64_t ToggleFeature(uint64_t FB);
|
|
|
|
/// ToggleFeature - Toggle a feature and returns the re-computed feature
|
|
/// bits. This version will also change all implied bits.
|
|
uint64_t ToggleFeature(StringRef FS);
|
|
|
|
/// getInstrItineraryForCPU - Get scheduling itinerary of a CPU.
|
|
///
|
|
InstrItineraryData getInstrItineraryForCPU(StringRef CPU) const;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|