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//===-- SPUSubtarget.h - Define Subtarget for the Cell SPU ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the Cell SPU-specific subclass of TargetSubtargetInfo.
//
//===----------------------------------------------------------------------===//
#ifndef CELLSUBTARGET_H
#define CELLSUBTARGET_H
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/MC/MCInstrItineraries.h"
#include <string>
#define GET_SUBTARGETINFO_HEADER
#include "SPUGenSubtargetInfo.inc"
namespace llvm {
class GlobalValue;
class StringRef;
namespace SPU {
enum {
PROC_NONE,
DEFAULT_PROC
};
}
class SPUSubtarget : public SPUGenSubtargetInfo {
protected:
/// stackAlignment - The minimum alignment known to hold of the stack frame
/// on entry to the function and which must be maintained by every function.
unsigned StackAlignment;
/// Selected instruction itineraries (one entry per itinerary class.)
InstrItineraryData InstrItins;
/// Which SPU processor (this isn't really used, but it's there to keep
/// the C compiler happy)
unsigned ProcDirective;
/// Use (assume) large memory -- effectively disables the LQA/STQA
/// instructions that assume 259K local store.
bool UseLargeMem;
public:
/// This constructor initializes the data members to match that
/// of the specified triple.
///
SPUSubtarget(const std::string &TT, const std::string &CPU,
const std::string &FS);
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
/// SetJITMode - This is called to inform the subtarget info that we are
/// producing code for the JIT.
void SetJITMode();
/// getStackAlignment - Returns the minimum alignment known to hold of the
/// stack frame on entry to the function and which must be maintained by
/// every function for this subtarget.
unsigned getStackAlignment() const { return StackAlignment; }
/// getInstrItins - Return the instruction itineraies based on subtarget
/// selection.
const InstrItineraryData &getInstrItineraryData() const {
return InstrItins;
}
/// Use large memory addressing predicate
bool usingLargeMem() const {
return UseLargeMem;
}
/// getTargetDataString - Return the pointer size and type alignment
/// properties of this subtarget.
const char *getTargetDataString() const {
return "E-p:32:32:128-f64:64:128-f32:32:128-i64:32:128-i32:32:128"
"-i16:16:128-i8:8:128-i1:8:128-a:0:128-v64:64:128-v128:128:128"
"-s:128:128-n32:64";
}
bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
TargetSubtargetInfo::AntiDepBreakMode& Mode,
RegClassVector& CriticalPathRCs) const;
};
} // End llvm namespace
#endif
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