llvm-6502/lib/CodeGen/PseudoSourceValue.cpp
2008-07-14 17:45:47 +00:00

68 lines
2.0 KiB
C++

//===-- llvm/CodeGen/PseudoSourceValue.cpp ----------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the PseudoSourceValue class.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ManagedStatic.h"
#include <map>
namespace llvm {
static ManagedStatic<PseudoSourceValue[4]> PSVs;
const PseudoSourceValue *PseudoSourceValue::getStack()
{ return &(*PSVs)[0]; }
const PseudoSourceValue *PseudoSourceValue::getGOT()
{ return &(*PSVs)[1]; }
const PseudoSourceValue *PseudoSourceValue::getJumpTable()
{ return &(*PSVs)[2]; }
const PseudoSourceValue *PseudoSourceValue::getConstantPool()
{ return &(*PSVs)[3]; }
static const char *const PSVNames[] = {
"Stack",
"GOT",
"JumpTable",
"ConstantPool"
};
PseudoSourceValue::PseudoSourceValue() :
Value(PointerType::getUnqual(Type::Int8Ty), PseudoSourceValueVal) {}
void PseudoSourceValue::print(std::ostream &OS) const {
OS << PSVNames[this - *PSVs];
}
/// FixedStackPseudoSourceValue - A specialized PseudoSourceValue
/// for holding FixedStack values, which must include a frame
/// index.
class VISIBILITY_HIDDEN FixedStackPseudoSourceValue
: public PseudoSourceValue {
const int FI;
public:
explicit FixedStackPseudoSourceValue(int fi) : FI(fi) {}
virtual void print(std::ostream &OS) const {
OS << "FixedStack" << FI;
}
};
static ManagedStatic<std::map<int, const PseudoSourceValue *> > FSValues;
const PseudoSourceValue *PseudoSourceValue::getFixedStack(int FI) {
const PseudoSourceValue *&V = (*FSValues)[FI];
if (!V)
V = new FixedStackPseudoSourceValue(FI);
return V;
}
}