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//===-- llvm/CodeGen/MachineFunction.h --------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Collect native machine code for a function. This class contains a list of
// MachineBasicBlock instances that make up the current compiled function.
//
// This class also contains pointers to various classes which hold
// target-specific information about the generated code.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEFUNCTION_H
#define LLVM_CODEGEN_MACHINEFUNCTION_H
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "Support/Annotation.h"
#include "Support/ilist"
class Function;
class TargetMachine;
class FunctionPass;
class SSARegMap;
class MachineFunctionInfo;
class MachineFrameInfo;
class MachineConstantPool;
FunctionPass *createMachineCodeConstructionPass(TargetMachine &TM);
FunctionPass *createMachineCodeDestructionPass();
FunctionPass *createMachineFunctionPrinterPass();
class MachineFunction : private Annotation {
const Function *Fn;
const TargetMachine &Target;
// List of machine basic blocks in function
iplist<MachineBasicBlock> BasicBlocks;
// Keeping track of mapping from SSA values to registers
SSARegMap *SSARegMapping;
// Used to keep track of frame and constant area information for sparc be
MachineFunctionInfo *MFInfo;
// Keep track of objects allocated on the stack.
MachineFrameInfo *FrameInfo;
// Keep track of constants which are spilled to memory
MachineConstantPool *ConstantPool;
public:
MachineFunction(const Function *Fn, const TargetMachine &TM);
~MachineFunction();
/// getFunction - Return the LLVM function that this machine code represents
///
const Function *getFunction() const { return Fn; }
/// getTarget - Return the target machine this machine code is compiled with
///
const TargetMachine &getTarget() const { return Target; }
/// SSARegMap Interface... Keep track of information about each SSA virtual
/// register, such as which register class it belongs to.
///
SSARegMap *getSSARegMap() const { return SSARegMapping; }
void clearSSARegMap();
/// getFrameInfo - Return the frame info object for the current function.
/// This object contains information about objects allocated on the stack
/// frame of the current function in an abstract way.
///
MachineFrameInfo *getFrameInfo() const { return FrameInfo; }
/// getConstantPool - Return the constant pool object for the current
/// function.
MachineConstantPool *getConstantPool() const { return ConstantPool; }
/// MachineFunctionInfo - Keep track of various per-function pieces of
/// information for the sparc backend.
///
MachineFunctionInfo *getInfo() const { return MFInfo; }
/// print - Print out the MachineFunction in a format suitable for debugging
/// to the specified stream.
///
void print(std::ostream &OS) const;
/// dump - Print the current MachineFunction to cerr, useful for debugger use.
///
void dump() const;
// The next three methods are used to construct, destruct, and retrieve the
// MachineFunction object for the given method.
//
// construct() -- Allocates and initializes for a given method and target
// get() -- Returns a handle to the object.
// This should not be called before "construct()"
// for a given Method.
// destruct() -- Destroy the MachineFunction object
//
static MachineFunction& construct(const Function *F, const TargetMachine &TM);
static void destruct(const Function *F);
static MachineFunction& get(const Function *F);
// Provide accessors for the MachineBasicBlock list...
typedef iplist<MachineBasicBlock> BasicBlockListType;
typedef BasicBlockListType::iterator iterator;
typedef BasicBlockListType::const_iterator const_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
// Provide accessors for basic blocks...
const BasicBlockListType &getBasicBlockList() const { return BasicBlocks; }
BasicBlockListType &getBasicBlockList() { return BasicBlocks; }
//===--------------------------------------------------------------------===//
// BasicBlock iterator forwarding functions
//
iterator begin() { return BasicBlocks.begin(); }
const_iterator begin() const { return BasicBlocks.begin(); }
iterator end () { return BasicBlocks.end(); }
const_iterator end () const { return BasicBlocks.end(); }
reverse_iterator rbegin() { return BasicBlocks.rbegin(); }
const_reverse_iterator rbegin() const { return BasicBlocks.rbegin(); }
reverse_iterator rend () { return BasicBlocks.rend(); }
const_reverse_iterator rend () const { return BasicBlocks.rend(); }
unsigned size() const { return BasicBlocks.size(); }
bool empty() const { return BasicBlocks.empty(); }
const MachineBasicBlock &front() const { return BasicBlocks.front(); }
MachineBasicBlock &front() { return BasicBlocks.front(); }
const MachineBasicBlock & back() const { return BasicBlocks.back(); }
MachineBasicBlock & back() { return BasicBlocks.back(); }
};
#endif
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