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//=====-- SPUSubtarget.h - Define Subtarget for the Cell SPU -----*- C++ -*--=//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by a team from the Computer Systems Research
// Department at The Aerospace Corporation and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the Cell SPU-specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#ifndef POWERPCSUBTARGET_H
#define POWERPCSUBTARGET_H
#include "llvm/Target/TargetInstrItineraries.h"
#include "llvm/Target/TargetSubtarget.h"
#include <string>
namespace llvm {
class Module;
class GlobalValue;
class TargetMachine;
namespace SPU {
enum {
DEFAULT_PROC
};
}
class SPUSubtarget : public TargetSubtarget {
protected:
const TargetMachine &TM;
/// 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 module.
///
SPUSubtarget(const TargetMachine &TM, const Module &M,
const std::string &FS);
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
/// 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-v128:128:128"
"-s:128:128";
}
};
} // End llvm namespace
#endif
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