#include "llvm/AbstractTypeUser.h"
#include "llvm/Use.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/Support/Casting.h"
-#include <iosfwd>
#include <string>
namespace llvm {
/// print - Implement operator<< on Value.
///
- void print(std::ostream &O, AssemblyAnnotationWriter *AAW = 0) const;
void print(raw_ostream &O, AssemblyAnnotationWriter *AAW = 0) const;
/// All values are typed, get the type of this value.
// All values can potentially be named...
inline bool hasName() const { return Name != 0; }
ValueName *getValueName() const { return Name; }
-
- /// getNameStart - Return a pointer to a null terminated string for this name.
- /// Note that names can have null characters within the string as well as at
- /// their end. This always returns a non-null pointer.
- const char *getNameStart() const;
- /// getNameEnd - Return a pointer to the end of the name.
- const char *getNameEnd() const { return getNameStart() + getNameLen(); }
-
- /// isName - Return true if this value has the name specified by the provided
- /// nul terminated string.
- bool isName(const char *N) const;
- /// getNameLen - Return the length of the string, correctly handling nul
- /// characters embedded into them.
- unsigned getNameLen() const;
-
- /// getName()/getNameStr() - Return the name of the specified value,
- /// *constructing a string* to hold it. Because these are guaranteed to
- /// construct a string, they are very expensive and should be avoided.
- std::string getName() const { return getNameStr(); }
+ /// getName() - Return a constant reference to the value's name. This is cheap
+ /// and guaranteed to return the same reference as long as the value is not
+ /// modified.
+ ///
+ /// This is currently guaranteed to return a StringRef for which data() points
+ /// to a valid null terminated string. The use of StringRef.data() is
+ /// deprecated here, however, and clients should not rely on it. If such
+ /// behavior is needed, clients should use expensive getNameStr(), or switch
+ /// to an interface that does not depend on null termination.
+ StringRef getName() const;
+
+ /// getNameStr() - Return the name of the specified value, *constructing a
+ /// string* to hold it. This is guaranteed to construct a string and is very
+ /// expensive, clients should use getName() unless necessary.
std::string getNameStr() const;
-
- void setName(const std::string &name);
- void setName(const char *Name, unsigned NameLen);
- void setName(const char *Name); // Takes a null-terminated string.
+ /// setName() - Change the name of the value, choosing a new unique name if
+ /// the provided name is taken.
+ ///
+ /// \arg Name - The new name; or "" if the value's name should be removed.
+ void setName(const Twine &Name);
/// takeName - transfer the name from V to this value, setting V's name to
// Only use when in type resolution situations!
void uncheckedReplaceAllUsesWith(Value *V);
- /// clearOptionalData - Clear any optional optimization data from this Value.
- /// Transformation passes must call this method whenever changing the IR
- /// in a way that would affect the values produced by this Value, unless
- /// it takes special care to ensure correctness in some other way.
- void clearOptionalData() { SubclassOptionalData = 0; }
-
//----------------------------------------------------------------------
// Methods for handling the chain of uses of this Value.
//
ConstantPointerNullVal, // This is an instance of ConstantPointerNull
MDNodeVal, // This is an instance of MDNode
MDStringVal, // This is an instance of MDString
+ NamedMDNodeVal, // This is an instance of NamedMDNode
InlineAsmVal, // This is an instance of InlineAsm
PseudoSourceValueVal, // This is an instance of PseudoSourceValue
InstructionVal, // This is an instance of Instruction
// Markers:
ConstantFirstVal = FunctionVal,
- ConstantLastVal = MDNodeVal
+ ConstantLastVal = ConstantPointerNullVal
};
/// getValueID - Return an ID for the concrete type of this object. This is
return SubclassID;
}
+ /// getRawSubclassOptionalData - Return the raw optional flags value
+ /// contained in this value. This should only be used when testing two
+ /// Values for equivalence.
+ unsigned getRawSubclassOptionalData() const {
+ return SubclassOptionalData;
+ }
+
+ /// hasSameSubclassOptionalData - Test whether the optional flags contained
+ /// in this value are equal to the optional flags in the given value.
+ bool hasSameSubclassOptionalData(const Value *V) const {
+ return SubclassOptionalData == V->SubclassOptionalData;
+ }
+
+ /// intersectOptionalDataWith - Clear any optional flags in this value
+ /// that are not also set in the given value.
+ void intersectOptionalDataWith(const Value *V) {
+ SubclassOptionalData &= V->SubclassOptionalData;
+ }
+
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Value *) {
return true; // Values are always values.
}
};
-inline std::ostream &operator<<(std::ostream &OS, const Value &V) {
- V.print(OS);
- return OS;
-}
inline raw_ostream &operator<<(raw_ostream &OS, const Value &V) {
V.print(OS);
return OS;