-//===-- llvm/CodeGen/MachineFunction.h ---------------------------*- C++ -*--=//
+//===-- llvm/CodeGen/MachineFunction.h --------------------------*- C++ -*-===//
//
-// Collect native machine code information for a method. This allows
-// target-specific information about the generated code to be stored with each
-// method.
+// 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/Annotation.h"
-#include "Support/NonCopyable.h"
-#include "Support/HashExtras.h"
-#include <Support/hash_set>
-class Value;
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "Support/Annotation.h"
+#include "Support/ilist"
+
+namespace llvm {
+
class Function;
-class Constant;
-class Type;
class TargetMachine;
-class Pass;
-
-Pass *createMachineCodeConstructionPass(TargetMachine &Target);
-Pass *createMachineCodeDestructionPass();
+class SSARegMap;
+class MachineFunctionInfo;
+class MachineFrameInfo;
+class MachineConstantPool;
class MachineFunction : private Annotation {
- hash_set<const Constant*> constantsForConstPool;
- hash_map<const Value*, int> offsets;
- const Function* method;
- unsigned staticStackSize;
- unsigned automaticVarsSize;
- unsigned regSpillsSize;
- unsigned maxOptionalArgsSize;
- unsigned maxOptionalNumArgs;
- unsigned currentTmpValuesSize;
- unsigned maxTmpValuesSize;
- bool compiledAsLeaf;
- bool spillsAreaFrozen;
- bool automaticVarsAreaFrozen;
-
+ 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:
- /*ctor*/ MachineFunction(const Function* function,
- const TargetMachine& target);
-
- // The next two methods are used to construct and to retrieve
- // the MachineFunction object for the given method.
+ 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.
//
- static MachineFunction& construct(const Function *method,
- const TargetMachine &target);
+ static MachineFunction& construct(const Function *F, const TargetMachine &TM);
static void destruct(const Function *F);
- static MachineFunction& get(const Function* function);
-
- //
- // Accessors for global information about generated code for a method.
- //
- inline bool isCompiledAsLeafMethod() const { return compiledAsLeaf; }
- inline unsigned getStaticStackSize() const { return staticStackSize; }
- inline unsigned getAutomaticVarsSize() const { return automaticVarsSize; }
- inline unsigned getRegSpillsSize() const { return regSpillsSize; }
- inline unsigned getMaxOptionalArgsSize() const { return maxOptionalArgsSize;}
- inline unsigned getMaxOptionalNumArgs() const { return maxOptionalNumArgs;}
- inline const hash_set<const Constant*>&
- getConstantPoolValues() const {return constantsForConstPool;}
-
+ 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
//
- // Modifiers used during code generation
- //
- void initializeFrameLayout (const TargetMachine& target);
-
- void addToConstantPool (const Constant* constVal)
- { constantsForConstPool.insert(constVal); }
-
- inline void markAsLeafMethod() { compiledAsLeaf = true; }
-
- int computeOffsetforLocalVar (const TargetMachine& target,
- const Value* local,
- unsigned int& getPaddedSize,
- unsigned int sizeToUse = 0);
- int allocateLocalVar (const TargetMachine& target,
- const Value* local,
- unsigned int sizeToUse = 0);
-
- int allocateSpilledValue (const TargetMachine& target,
- const Type* type);
-
- int pushTempValue (const TargetMachine& target,
- unsigned int size);
-
- void popAllTempValues (const TargetMachine& target);
-
- void freezeSpillsArea () { spillsAreaFrozen = true; }
- void freezeAutomaticVarsArea () { automaticVarsAreaFrozen=true; }
-
- int getOffset (const Value* val) const;
-
- // int getOffsetFromFP (const Value* val) const;
-
- void dump () const;
-
-private:
- inline void incrementAutomaticVarsSize(int incr) {
- automaticVarsSize+= incr;
- staticStackSize += incr;
- }
- inline void incrementRegSpillsSize(int incr) {
- regSpillsSize+= incr;
- staticStackSize += incr;
- }
- inline void incrementTmpAreaSize(int incr) {
- currentTmpValuesSize += incr;
- if (maxTmpValuesSize < currentTmpValuesSize)
- {
- staticStackSize += currentTmpValuesSize - maxTmpValuesSize;
- maxTmpValuesSize = currentTmpValuesSize;
- }
- }
- inline void resetTmpAreaSize() {
- currentTmpValuesSize = 0;
- }
- int allocateOptionalArg (const TargetMachine& target,
- const Type* type);
+ 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(); }
};
+} // End llvm namespace
+
#endif
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