X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FValue.h;h=f8eceb7ec05aac2f43a6fcae08acd175107ede89;hb=87944916a4764dabc2f89cbec0a6c7e439c28530;hp=8af91e85edfb3a22f459ccb7e676666c0dd4e941;hpb=20f8d5d093400bc7f33f25facd0b99b1e2d8c8c9;p=oota-llvm.git diff --git a/include/llvm/Value.h b/include/llvm/Value.h index 8af91e85edf..f8eceb7ec05 100644 --- a/include/llvm/Value.h +++ b/include/llvm/Value.h @@ -1,146 +1,105 @@ //===-- llvm/Value.h - Definition of the Value class -------------*- C++ -*--=// // // This file defines the very important Value class. This is subclassed by a -// bunch of other important classes, like Def, Method, Module, Type, etc... +// bunch of other important classes, like Instruction, Function, Type, etc... +// +// This file also defines the Use<> template for users of value. // //===----------------------------------------------------------------------===// #ifndef LLVM_VALUE_H #define LLVM_VALUE_H -#include #include "llvm/Annotation.h" #include "llvm/AbstractTypeUser.h" +#include "Support/Casting.h" +#include +#include class User; class Type; -class ConstPoolVal; -class MethodArgument; +class Constant; +class Argument; class Instruction; class BasicBlock; -class Method; +class GlobalValue; +class Function; class GlobalVariable; -class Module; class SymbolTable; -template - class ValueHolder; //===----------------------------------------------------------------------===// // Value Class //===----------------------------------------------------------------------===// +/// Value - The base class of all values computed by a program that may be used +/// as operands to other values. +/// class Value : public Annotable, // Values are annotable public AbstractTypeUser { // Values use potentially abstract types public: enum ValueTy { TypeVal, // This is an instance of Type - ConstantVal, // This is an instance of ConstPoolVal - MethodArgumentVal, // This is an instance of MethodArgument + ConstantVal, // This is an instance of Constant + ArgumentVal, // This is an instance of Argument InstructionVal, // This is an instance of Instruction BasicBlockVal, // This is an instance of BasicBlock - MethodVal, // This is an instance of Method - GlobalVal, // This is an instance of GlobalVariable - ModuleVal, // This is an instance of Module + FunctionVal, // This is an instance of Function + GlobalVariableVal, // This is an instance of GlobalVariable }; private: - vector Uses; - string Name; + std::vector Uses; + std::string Name; PATypeHandle Ty; ValueTy VTy; + void operator=(const Value &); // Do not implement Value(const Value &); // Do not implement -protected: - inline void setType(const Type *ty) { Ty = ty; } public: - Value(const Type *Ty, ValueTy vty, const string &name = ""); + Value(const Type *Ty, ValueTy vty, const std::string &name = ""); virtual ~Value(); - // Support for debugging + /// dump - Support for debugging, callable in GDB: V->dump() + // void dump() const; + + /// print - Implement operator<< on Value... + /// + virtual void print(std::ostream &O) const = 0; - // All values can potentially be typed + /// All values are typed, get the type of this value. + /// inline const Type *getType() const { return Ty; } // All values can potentially be named... - inline bool hasName() const { return Name != ""; } - inline const string &getName() const { return Name; } + inline bool hasName() const { return Name != ""; } + inline const std::string &getName() const { return Name; } - virtual void setName(const string &name, SymbolTable * = 0) { + virtual void setName(const std::string &name, SymbolTable * = 0) { Name = name; } - // Methods for determining the subtype of this Value. The getValueType() - // method returns the type of the value directly. The cast*() methods are - // equivalent to using dynamic_cast<>... if the cast is successful, this is - // returned, otherwise you get a null pointer, allowing expressions like: - // - // if (Instruction *I = Val->castInstruction()) { ... } - // - // This section also defines a family of isType, isConstant, - // isMethodArgument, etc functions... - // - // The family of functions Val->castAsserting() is used in the same - // way as the Val->cast() instructions, but they assert the expected - // type instead of checking it at runtime. - // + /// getValueType - Return the immediate subclass of this Value. + /// inline ValueTy getValueType() const { return VTy; } - // Use a macro to define the functions, otherwise these definitions are just - // really long and ugly. -#define CAST_FN(NAME, CLASS) \ - inline bool is##NAME() const { return VTy == NAME##Val; } \ - inline const CLASS *cast##NAME() const { /*const version */ \ - return is##NAME() ? (const CLASS*)this : 0; \ - } \ - inline CLASS *cast##NAME() { /* nonconst version */ \ - return is##NAME() ? (CLASS*)this : 0; \ - } \ - inline const CLASS *cast##NAME##Asserting() const { /*const version */ \ - assert(is##NAME() && "Expected Value Type: " #NAME); \ - return (const CLASS*)this; \ - } \ - inline CLASS *cast##NAME##Asserting() { /* nonconst version */ \ - assert(is##NAME() && "Expected Value Type: " #NAME); \ - return (CLASS*)this; \ - } \ - - CAST_FN(Constant , ConstPoolVal ) - CAST_FN(MethodArgument, MethodArgument) - CAST_FN(Instruction , Instruction ) - CAST_FN(BasicBlock , BasicBlock ) - CAST_FN(Method , Method ) - CAST_FN(Global , GlobalVariable) - CAST_FN(Module , Module ) -#undef CAST_FN - - // Type value is special, because there is no nonconst version of functions! - inline bool isType() const { return VTy == TypeVal; } - inline const Type *castType() const { - return (VTy == TypeVal) ? (const Type*)this : 0; - } - inline const Type *castTypeAsserting() const { - assert(isType() && "Expected Value Type: Type"); - return (const Type*)this; - } - - // replaceAllUsesWith - Go through the uses list for this definition and make - // each use point to "D" instead of "this". After this completes, 'this's - // use list should be empty. - // - void replaceAllUsesWith(Value *D); - - // refineAbstractType - This function is implemented because we use - // potentially abstract types, and these types may be resolved to more - // concrete types after we are constructed. - // + /// replaceAllUsesWith - Go through the uses list for this definition and make + /// each use point to "V" instead of "this". After this completes, 'this's + /// use list is guaranteed to be empty. + /// + void replaceAllUsesWith(Value *V); + + /// refineAbstractType - This function is implemented because we use + /// potentially abstract types, and these types may be resolved to more + /// concrete types after we are constructed. + /// virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy); //---------------------------------------------------------------------- // Methods for handling the vector of uses of this Value. // - typedef vector::iterator use_iterator; - typedef vector::const_iterator use_const_iterator; + typedef std::vector::iterator use_iterator; + typedef std::vector::const_iterator use_const_iterator; inline unsigned use_size() const { return Uses.size(); } inline bool use_empty() const { return Uses.empty(); } @@ -148,6 +107,8 @@ public: inline use_const_iterator use_begin() const { return Uses.begin(); } inline use_iterator use_end() { return Uses.end(); } inline use_const_iterator use_end() const { return Uses.end(); } + inline User *use_back() { return Uses.back(); } + inline const User *use_back() const { return Uses.back(); } inline void use_push_back(User *I) { Uses.push_back(I); } User *use_remove(use_iterator &I); @@ -156,6 +117,24 @@ public: void killUse(User *I); }; +inline std::ostream &operator<<(std::ostream &OS, const Value *V) { + if (V == 0) + OS << " value!\n"; + else + V->print(OS); + return OS; +} + +inline std::ostream &operator<<(std::ostream &OS, const Value &V) { + V.print(OS); + return OS; +} + + +//===----------------------------------------------------------------------===// +// UseTy Class +//===----------------------------------------------------------------------===// + // UseTy and it's friendly typedefs (Use) are here to make keeping the "use" // list of a definition node up-to-date really easy. // @@ -188,6 +167,9 @@ public: inline ValueSubclass *operator->() { return Val; } inline const ValueSubclass *operator->() const { return Val; } + inline ValueSubclass *get() { return Val; } + inline const ValueSubclass *get() const { return Val; } + inline UseTy &operator=(const UseTy &user) { if (Val) Val->killUse(U); Val = user.Val; @@ -196,13 +178,49 @@ public: } }; -typedef UseTy Use; +typedef UseTy Use; // Provide Use as a common UseTy type -//---------------------------------------------------------------------- -// Debugging support for class Value and its subclasses. -// +template struct simplify_type > { + typedef typename simplify_type::SimpleType SimpleType; + + static SimpleType getSimplifiedValue(const UseTy &Val) { + return (SimpleType)Val.get(); + } +}; +template struct simplify_type > { + typedef typename simplify_type::SimpleType SimpleType; + + static SimpleType getSimplifiedValue(const UseTy &Val) { + return (SimpleType)Val.get(); + } +}; -void DebugValue(const Value *V); -void DebugValue(const Value &V); +// isa - Provide some specializations of isa so that we don't have to include +// the subtype header files to test to see if the value is a subclass... +// +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::TypeVal; +} +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::ConstantVal; +} +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::ArgumentVal; +} +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::InstructionVal; +} +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::BasicBlockVal; +} +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::FunctionVal; +} +template <> inline bool isa_impl(const Value &Val) { + return Val.getValueType() == Value::GlobalVariableVal; +} +template <> inline bool isa_impl(const Value &Val) { + return isa(Val) || isa(Val); +} #endif